Episode 7 Operation Ouch!


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Episode 7

Dr Chris and Dr Xand find out what happens when you eat with the help of a miniature Xand doll, and Dr Chris is at work fighting infectious diseases.


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Transcript


LineFromTo

-I'm Dr Chris.

-And I'm Dr Xand.

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-We are identical twins.

-Twins!

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'Do you know your body does loads of amazing things every day

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'without you even realising it?'

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Welcome to my poo factory.

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'We're going to show you how.'

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Smell my armpits!

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'We've got gobsmacking experiments...'

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Wow!

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'..mind-bending body tricks...'

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-THEY LAUGH

-'..and real medical mysteries...'

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It's tickling the tip of my nose.

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'So, are you ready to see what you're made of?'

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-Coming...

-Up...

-Today...

-On...

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-Operation...

-Ouch!

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'Find out what happens inside your body when you eat.

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'I'm on call with a rapid response team...'

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I'm not moving you off this sofa until you're pain-free.

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'..and Xand goes too far in mind-benders...'

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Bar, far.

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That's crazy.

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'..but first...'

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Accident and Emergency is the hospital department of surprises.

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And there's nothing more surprising than this case.

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'Waiting in Alder Hey Accident and Emergency with her mum

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'is five-year-old Erin with a pinkie that's not too perky.'

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It feels a little bit painful

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and I can't get them all together.

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Oh, dear! What happened there, then?

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Erin was playing with her friends, Lily, Harry and George.

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Sounds fun.

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They were climbing.

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-Ooh, climbing a mountain?

-No, Xand.

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-Climbing the walls?

-No, Xand. They were climbing the stairs.

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Uh-oh! Everyone knows not to play on the stairs.

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The boys were trying to stop the girls from getting past,

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but in the scuffle, Erin's little finger got pulled back.

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Ouch! SIREN WAILS

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-I can't even bend it.

-That's no good.

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Best get that funny finger checked out with an X-ray.

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Nice and still for me like a statue.

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Excellent, OK.

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Whilst waiting for her X-ray results,

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Erin's doing what all poorly people do.

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MUSIC: Gangnam Style by Psy

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Yes, she's dancing.

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Well, she's a better dancer than you, Chris.

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She certainly is.

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That's enough now, Erin.

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Time to hand over to Nurse Practitioner

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Julia Maxted to check out

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that painful pinkie.

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So, first of all, your shoulder and your elbow, are they all OK?

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-You can move those around?

-Yeah.

-You bet she can.

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MUSIC: Gangnam Style by Psy

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-It's sore there, OK.

-ERIN INHALES SHARPLY

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-That's... There.

-Is that the worst bit?

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OK, do you know what we need to do now?

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-What?

-Have a little look at your X-ray.

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That doesn't look good.

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So, what's happened is it's broken and then it's gone a bit crooked.

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That's why it's sticking out.

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What we need to do is to try and pull it back into a better position

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so that it's not sticking out

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so that then it'll heal in the right position.

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And so what I think we'll probably do is get you

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some special laughing gas.

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Laughing gas will help relieve the pain Erin's in, especially

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when straightening that finger.

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I want to get the giggles.

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Find out later if Erin does get the giggles and that finger gets fixed.

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'Ready to see some amazing experiments?'

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Yes! A triumph.

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We're going to show you how your incredible body works.

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Just don't try anything you see here at home.

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Today, we're looking at how we power our bodies.

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Now, this experiment is to show you what happens inside your body

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every time you eat.

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Now, Xand, what I need you to do is take that tube

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and when I give you the instruction "blow", I want you to blow into it.

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On blow, I go.

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That's right, you go on blow.

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HE COUGHS

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-Xand, why did you do that?

-You said blow.

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Now we have to set it all up again.

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For this experiment, we're using

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lycopodium powder to represent food.

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OK, Xand, blowtorch on.

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-Are you ready, Xand?

-Ready.

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Blow.

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-Wow!

-Whoa!

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'So what's going on?'

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The lycopodium powder has mixed with the air breathed out by Xand,

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been ignited by the flame causing a chemical reaction,

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which releases lots of energy.

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Now, although there's no fire inside you,

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chemically, this is what happens in your body when you eat.

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Your food is fuel, just like the lycopodium powder,

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it mixes with the oxygen and releases energy,

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which is what allows you to do all sorts of things,

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whether it's just breathing or running around.

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But how much energy do you need

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and is there such a thing as too much? Well, we're going to find out.

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Your body is a bit like an engine,

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so it needs fuel for all the things it has to do.

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To show you what I mean, I've rigged up a simple engine system

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-and I'm going to need Xand's body.

-What?

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Well, no problem at all, Chris.

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My body is ready at the service of science. For many years, I've...

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Actually, Xand, I don't need that body.

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What? But you just said...

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I've got mini Xand to help me.

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What? You've clamped his legs?

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Is that a wire in the back of his head?

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What is going on?

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Mini Xand is hooked up to an engine system,

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which represents what your body does with the food and drink

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that you consume.

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-I can do what he's doing.

-Stop it.

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When you eat and drink, your body uses it to create energy.

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So, with this engine,

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this hose full of water represents your food and drink.

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And when I squirt it onto the wheel, the wheel will turn,

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creating energy, which is sent to the light bulb on mini Xand's head,

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-which represents his energy levels.

-OK. So, what now?

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Well, we're going to see what happens

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when different amounts of the fuel are pumped through to mini Xand.

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First, this is what happens to mini Xand

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when he eats just the right amount of energy.

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It's a bit like if you eat a decent breakfast, lunch and dinner.

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You can see we have a nice balance,

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mini Xand's light is on and everything is working perfectly.

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Your body takes the fuel and turns it into the right

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amount of energy you need for an average day.

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But what about if mini Xand has had a really busy day

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and he forgot to eat lunch.

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That does happen.

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Good question, Xand. Well, let's find out.

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Now I'm putting less water on the wheel and it's not spinning,

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so the light bulb isn't coming on.

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-This is not good.

-Exactly.

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That's what happens if you don't eat enough.

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Your poor body has no energy to do what it needs to.

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And as a result, you feel tired

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and it can mean your body won't be able to perform

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all its functions properly.

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That could make him ill.

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I think you need to give him some more fuel right now, Chris.

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Yes, but I think we also need to see what happens

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if you eat or drink too much,

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like that extra chocolate biscuit

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I saw you eating earlier, Xand. Let's have a look.

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So, now there's plenty of energy to power mini Xand and his light bulb.

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'But we're putting so much fuel in,

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'it's getting fuller than it should be.'

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Exactly, and that's what happens when you eat more than you need to.

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Your body has to find something to do with all that excess fuel.

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Something tells me mini Xand is about to change.

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Well, the excess fuel creates unused energy,

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which gets turned into fat cells.

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Mini Xand is becoming overweight.

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Oh, no! Poor mini Xand.

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So, we've seen how when you drink and eat food,

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your body combines it with oxygen to create energy

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and that energy fuels the things you do every day.

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But it's important to get the balance right

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between what goes in and what you use.

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Too little and you can become underweight.

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Too much and you can become overweight.

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But unlike mini Xand, no-one becomes too thin or too fat overnight.

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It takes a long time to happen, so as long as you keep things

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balanced most of the time, your body will be happy.

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And of course, if you hadn't clamped mini Xand's legs,

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he'd have been able to do some exercise and he'd have been fine.

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-What are you doing?

-I'm taking mini Xand for a run.

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But first, I'm going to buy him some decent gym gear -

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a jazzy sports top, some good shorts, some sweat bands,

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a pair of decent trainers...

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MUSIC: Jump by Kris Kross

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Xand, I thought you were kidding.

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We're on call with the UK emergency services

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showing you what it's really like on the front line saving lives.

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On call with me is paramedic Jan Vann.

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Today, I'm heading out to show you what it's like to be

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first on the scene of a medical emergency.

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-Can I drive?

-No.

-Can I make the sirens work?

-No.

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-Can I turn the lights on?

-No.

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What can I do?

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You can carry the bags.

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Yes, official bag carrier.

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Jan alone can do ten to 15 emergency call-outs in a day,

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and a new case is just in.

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We've been called to see a lady

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with what's called post-partum bleeding.

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She had a baby a week ago and now she's bleeding.

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Now, that can be very dangerous and can actually be life-threatening.

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'Jan and I rush to the scene and get inside as quickly as possible.'

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Hello.

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'We find the patient, Jade, in a lot of pain.

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'Jan starts treating her while I go to the car

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'to fetch some gas and air.'

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Its medical name is Entonox,

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a mixture of nitrous oxide and oxygen.

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Sometimes people use it

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when they're giving birth,

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but it's a really good way

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of quickly getting someone

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who's in severe pain a little bit more comfortable.

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'I'm quickly back in and Jade is breathing in the soothing gas

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'within seconds.'

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Take as much as you need. Slow, big breaths in.

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'At the moment, it's about bringing Jade's pain levels

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'down to a tolerable level,

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'so she's also given a strong painkiller directly into her vein.'

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All right, we'll see if that helps, cos I want you comfortable

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before we move you.

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I'm not moving you off this sofa until you're pain-free, all right?

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'Jan is monitoring closely exactly how much pain Jade is in.'

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What pain score was you initially

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-if you're a five now?

-Ten.

-You were ten, initially.

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-I'd say it's about a three. I can control it.

-That's brilliant.

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When we arrived, she said her pain was ten out of ten.

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Now it's more like three out of ten,

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so it makes it much easier to get her to the ambulance,

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get her to hospital, which is where she needs to be.

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'Extra help is here.'

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This lady is completely different to when I arrived.

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Aren't you? This is Jade.

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'And Jan's finally happy that Jade's pain is down to a level

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'where she can be comfortably moved into the waiting ambulance.'

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How are you feeling now, Jade?

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It's still there, but I can cope with it.

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-Thanks, Jan, you've been a diamond.

-Not a problem.

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-Thanks, guys. All the best then, Jade.

-Thanks.

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-You take care, darling.

-Cheers.

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In a really short space of time,

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Jan managed to make a massive difference to the amount of pain

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that Jade was in.

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She was very anxious when we arrived

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and Jan managed to calm her down,

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a very difficult thing to do with someone in that much pain.

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By the time she got in the ambulance,

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she was looking much better.

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Jade was treated at the hospital and went home the same day.

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Still to come...

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check out our latest mind-bending trick...

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-Have we bent your mind?

-Yeah.

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..learn why some people can roll their tongues...

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Show me.

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And join Chris at work, fighting infectious diseases.

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And I'm about to show you how we do it.

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Let's head back to the emergency department to catch up

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with Erin and her broken finger.

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You can still eat them when they're broken.

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Why would she come to hospital for that?

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Not chocolate fingers, Xand. Erin's broken her actual finger. Remember?

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Oh, yeah. Well, let's see her get fixed.

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Back in Liverpool, five-year-old Erin is in hospital

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with a broken finger.

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It feels a little bit painful.

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Erin was playing with her friends, Lily, Harry and George.

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The boys were trying to stop the girls

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from getting past them on the stairs.

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In the scuffle, Erin's little finger got pulled right back.

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Erin's had her X-rays and now she's on laughing gas.

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-SHE LAUGHS

-And it looks like it's working.

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So, Nurse Julia can get to grips with that finger.

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With a couple of gentle tugs, the finger is pulled back into position.

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Thanks to the gas and air, Erin can't feel a thing.

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Do you know what? Your finger is now back alongside the other one.

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They're both together now.

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They are, aren't they?

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With that wonky finger now straight,

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Erin has a second X-ray to check it's all A-OK.

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Nurse Julia is back to deliver the results.

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The orthopaedic doctor is quite happy with that.

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That is good news.

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With her finger fixed, Erin has to return to fracture clinic

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in a couple of weeks with one final check.

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-Nice one, Erin. BOTH:

-Bye.

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-Now we're going to mess with your mind...

-It's weird.

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..scramble your senses and baffle your brain...

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-BOTH:

-In Mindbenders.

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What are you doing?

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For today's mind-bending trick, Xand needs warm facial muscles.

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You ready, Xand? It's quite a complicated vocal procedure.

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The more complicated, the better for me.

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-Now, can you say the word far?

-Far.

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Can you say the word bar?

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-Bar.

-I think you're ready.

-Doesn't seem that complicated.

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This lot are about to get their minds bent.

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We're showing them a video of Xand repeating a word.

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Bar, bar, bar, bar.

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OK, what sound is Dr Xand making?

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-Bar.

-Sheep.

-Bar, like a sheep, right?

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Like a sheep, OK, yeah. All right, let's watch the next video.

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Far, far, far, far, far.

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-Now what sound is Dr Xand making in that video?

-ALL:

-Far.

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-Does anyone think he's still saying bar?

-No.

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No, he's definitely saying far.

0:14:160:14:18

'Are you ready to play at home?'

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-OK, everyone look at the left.

-Look at this one.

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Whilst looking at the left-hand Xand, what word can you hear?

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Far, far, far, far, far, far.

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OK, now who's hearing far?

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You're all hearing far. OK, now everyone look at the right.

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-Bar, bar...

-'Looking at the right-hand Xand,

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'what word can you hear now?'

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Bar, bar, bar, bar.

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Now who thinks it's bar?

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'What if we told you that only one word was being said?'

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-Bar, bar...

-'In reality Xand is only ever saying the word bar.'

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Bar, bar, bar...

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'The Xand on the left is miming the word far.

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'So depending on which Xand you look at, you hear different words...

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'..even though the only word he is saying is bar.'

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-I don't get it.

-Have we bent your mind?

-Yeah.

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'What do you think is going on?'

0:15:120:15:14

-Sammy.

-Is it because that when your brain looks at one of them,

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-it, like, maybe changes it.

-Sammy's nailed it.

-Yeah.

0:15:170:15:20

That's really good. You're lip-reading, basically.

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So, even when you're hearing a sound,

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you trust your eyes more than your ears.

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What this trick demonstrates

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is the dominance of vision over all your other senses.

0:15:290:15:33

-So, even though the sound you're hearing the whole time is...

-Bar.

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-..when your eyes see Xand's mouth make the shape...

-Far.

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..that's what you hear, but the sound hasn't changed at all.

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And what's amazing about this is, it's a video of me

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and I know what sound I was making and I'm still fooled.

0:15:490:15:52

-Mind fent.

-I think you mean bent.

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That's what I said.

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Wow!

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We're at a theme park to solve your medical mysteries.

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Xand is preparing the Ouch-mobile for his first patient.

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And Chris is out in the park to answer your burning questions.

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Wow, I'm impressed.

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At the clinic, Xand is open for business.

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Could I have the next patient, please?

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First in is eight-year-old Eliot

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who's had treatment for a curious condition.

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Eliot, what's brought you to the Ouch-mobile today?

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Well, I have yellow and rough hands

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and I did have a pink tongue

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and big red lips.

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What's the diagnosis, Doc?

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Sounds to me like a case of...

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Dr Xand, it's called

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Kawasaki disease.

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It is called Kawasaki disease,

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-isn't it?

-Yeah.

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-And it is a real "itis", isn't it?

-Yeah.

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So, Kawasaki disease is a very rare disease.

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Only about eight in a 100,000 people get it.

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Kawasaki is serious, but Eliot's recovering well after treatment.

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So, if you look at the palm of Eliot's hand,

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it looks like it's a bit grubby,

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but that's not actually cos

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-your hands are dirty. They're clean.

-Yeah.

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What Eliot's got is a thing called desquamation.

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And that means the cells

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on the surface of his skin are dying

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more than in other people's hands,

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and those cells have a chemical

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called keratin. And the keratin,

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as the cell dies, goes yellow.

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How long does it last?

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Normally, it lasts a few weeks, maybe a few months.

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It's quite common for people to have symptoms

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that go on longer than the illness.

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But in the long term, we'd expect you to make a full recovery.

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-Yeah.

-Well, thank you very much

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-for bringing Kawasaki disease to the Ouch-mobile.

-Thank you.

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Away from the clinic, Chris is Ouch & About in the park.

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Why is it that some people can curl

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their tongue and others can't?

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-So, of you two, who can curl their tongue?

-Both of us.

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You both can, show me.

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We're not exactly sure of how it works,

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but it seems to be genetic.

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So, you're born able to do it or not able to do it.

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People who can't do it can never ever learn to do it.

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If you look at your parents, one of them will be able to,

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-that's where you...

-Yeah, Dad can, but Mum can't.

-Really?

-Yeah.

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-OK, so you both inherited it from your dad.

-BOTH:

-Thank you, Dr Chris.

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It's a pleasure.

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Can I have the next patient, please?

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Back at the Ouch-mobile,

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ten-year-old Izzy's chompers need checking.

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So, Izzy, why have you come to the Ouch-mobile?

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I've got an out-of-place tooth.

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-What's the diagnosis, Doc?

-Sounds to me like a case of...

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Tooth-tastic.

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How long have you had the tooth out of place for?

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-About two years.

-Can we have a better look at it?

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Can you open the eyelid on the Ouch-cam?

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Now, it's an adult tooth, right?

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Uh-huh.

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Now, does it bother you having the tooth be wonky?

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-Not really.

-Do you have any questions about the tooth?

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Why is it wonky in the first place?

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There are all kinds of reasons

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why it might be wonky.

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But one of the reasons is

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that your mouth is too crowded.

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And if your teeth get crowded,

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then some of them get pushed out of the way

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to make room for the others.

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Will it go back naturally or with braces?

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It might go back naturally.

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We don't know with your mouth yet,

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cos you've still got a lot of baby teeth

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and only a small number of adult teeth.

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I think it's most likely that you'd need braces

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to get it back in exactly the correct position.

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-Yeah.

-Well, Izzy, thank you very much

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-for bringing your amazing wonky teeth to the Ouch-mobile.

-OK.

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Job done for today, clinic closed.

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-Chris, I'm ready!

-Ready for what?

-To come to work with you today.

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Look, I've got everything I need.

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I've got Mr Grumbles, obviously. He wanted to come too.

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I've got a new pencil case in case we have to go to any meetings.

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-I've got some snacks, cheese straws, Mr Grumbles' favourite.

-Xand, Xand,

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-You and Mr Grumbles are not coming to work with me today.

-What?

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What are we going to do, then?

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-You're going to go to YOUR work.

-What? I'm late!

0:20:160:20:18

Well, Mr Grumbles and Xand may not be coming with me to work today,

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but you are. Time for Investigation Ouch.

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I'm wearing a special suit, but can you guess what it's used for?

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# Space man... #

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Oh, I know! You're going into space.

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No, try again, Xand.

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MUSIC: The Chain by Fleetwood Mac

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OK, I've got it, you're about to drive a Formula One car.

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No, Xand, wrong again.

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How is he doing that with the music?

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Anyway, Xand is wrong.

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This is...

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It's used so that doctors

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and nurses can treat patients with

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serious infections without getting ill themselves.

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I knew that, really.

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Now, you might have seen suits like this on the news

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because of the recent outbreak of a very serious virus

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called Ebola in West Africa.

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These things make the news because they're rare,

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but they're also very serious.

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So, what can we do to stop them in their tracks?

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Well, it's something I'm closely involved in.

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So, this is the lab that I work in when I'm not on Operation Ouch!

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Oh! I've always wanted to see Chris' lab.

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This is my boss, Greg.

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Hi, Greg.

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Hi, Chris. Who's that?

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That is Operation Ouch!

0:21:350:21:37

Hi, Operation Ouch!

0:21:370:21:39

Hi, Greg. Come on, Chris, you've got work to do.

0:21:390:21:42

Now, I study a virus called HIV,

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but scientists like me study all viruses

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using really similar techniques to work out how

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to treat and prevent diseases. And I'm about to show you how we do it.

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An infectious disease like a virus is similar to a burglar

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who's found exactly the right spanner

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to break into your cells' security system and infect them.

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Ha-ha, got you.

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-Scientists like me...

-Oi!

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..want to find out which part of the virus spanner unlocks the cell.

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Then we can stop the spanner working

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and create medicine to make people better.

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ALARM RINGS

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To show you how we do it,

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I've created my own infectious disease demonstration.

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I'm going to start with a real virus, but there's something else.

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Now, to understand how viruses work,

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we need to make mutants.

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To make a mutant, I take my original virus and change one thing

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about it by changing the shape of the spanner.

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Today, I'm making two different mutants -

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mutant one and mutant two.

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They are both the same as the original virus.

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Except I've made a different change in each one

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in their spanner to see if that change stops that spanner working.

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I then add each of these samples to healthy human cells to see

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which one is able to infect them.

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OK, so now the moment of truth.

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First, I'm going to show you what uninfected cells look like.

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So, these are healthy cells

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with no virus on them.

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They're nice and stuck down to the plate,

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and there are lots and lots of them.

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Now cells that have been infected with the original virus.

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Can you see? All the cells are clumped up

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and they're floating around, there are fewer of them.

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Then I turn on a special light and the cells glow green,

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which tells me they've been infected by the virus.

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We know this virus is working really well.

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It has exactly the right spanner to get inside these cells

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and infect them and make them sick.

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Time to see what's happened with mutant one.

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Can you see that?

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The cells are floating around.

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And just like the original virus,

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they're all green.

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So, this mutant, the first mutant, still has a working spanner.

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It can get inside those cells and infect them and make them sick.

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Now let's check mutant two.

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They look really healthy and there are lots of them,

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and when we put on the special light,

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none of these cells are green.

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So, the spanner of mutant number two virus is no longer working.

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It's not able to get inside the cells, infect them,

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turn them green and make them go sick.

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So that's great. We've now discovered which bit of the spanner

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is the important bit for getting inside cells.

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Curing a disease doesn't just happen in a day.

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I've given you a demonstration of how we go about it.

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But sometimes it takes a long time to find a right mutation,

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and there are lots of diseases that we still don't understand how

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they infect human cells.

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We don't understand how their spanners work, if you like.

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But research like this has led to some major breakthroughs

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that saved a lot of lives.

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So now you know what fantastic work Chris does

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when he's not on Operation Ouch! Good work, bro.

0:24:430:24:46

-Let's head back to Accident and Emergency...

-Go on.

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-..for another curious case.

-Go on.

0:24:530:24:56

Well, in Accident and Emergency,

0:24:590:25:01

-seven-year-old Jago is in with his mum.

-Go on.

0:25:010:25:04

I cut my head.

0:25:040:25:05

Right, how did that happen?

0:25:050:25:07

I had my feet on my chair and I fell back.

0:25:070:25:10

Go on.

0:25:100:25:11

I leaned back and because it took a long time to fall I tried to

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lean forwards, but it was heavier than me, so it tilts backwards.

0:25:160:25:21

OK, well, lets find out more.

0:25:210:25:23

Jago and his pal Zander were waiting patiently to play a game of

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squash, but they soon got bored and started climbing on their seats.

0:25:290:25:34

Oh, I bet they were pretending to be mountain goats, Chris.

0:25:340:25:37

Hm, dangerous.

0:25:370:25:40

Or clowning around in the circus.

0:25:400:25:42

Even more dangerous.

0:25:420:25:44

Or maybe they were on a space walk.

0:25:440:25:46

No, Xand. Jago's seat tipped backwards

0:25:480:25:50

-and he bashed his head on the wall.

-Ouch!

0:25:500:25:53

And then I started screaming. Ahh!

0:25:530:25:56

Quite dramatic.

0:25:560:25:58

Examining Jago's bashed bonce is

0:25:580:26:00

Dr Helen Stewart.

0:26:000:26:02

First, Dr Stewart does some tests to make sure that Jago's brain

0:26:040:26:07

is functioning correctly.

0:26:070:26:09

Good reflexes, Jago.

0:26:090:26:11

Brain's good, but what about that noggin?

0:26:110:26:14

-Ow!

-Sorry that's your hair. I'm just...

-That's my hair.

0:26:140:26:17

After some of Jago's hair is removed,

0:26:170:26:19

the doc can finally see the wound.

0:26:190:26:22

That's actually...quite big.

0:26:220:26:25

He's got a cut that's about 1.5cm in length,

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but the edges are quite straight and come together quite nicely.

0:26:290:26:32

So, it's quite deep, so I thought it might need a stitch,

0:26:320:26:35

but actually, we'll probably be able to glue the wound shut.

0:26:350:26:39

There's a red bloody bit there.

0:26:390:26:41

-Nice hair, Jago.

-It's like werewolf hair.

0:26:410:26:43

-CHRIS AND XAND:

-Werewolf hair?

-THEY HOWL

0:26:430:26:47

Stop it.

0:26:470:26:49

Fixing Jago's head is

0:26:490:26:51

Sister Anna Cowlishaw.

0:26:510:26:53

A quick clean and then we'll stick it back together with glue.

0:26:530:26:56

Quick snap for the family album.

0:26:560:26:58

Look away if you're squeamish.

0:26:580:27:00

The edges of Jago's wound are held together and a few spots of

0:27:000:27:04

special skin glue are applied.

0:27:040:27:06

-Has it closed?

-You're done.

0:27:060:27:08

Let's have a look. Great job, Sister Anna.

0:27:080:27:12

Jago can go home now and his head will be better in about five days.

0:27:120:27:15

And what has Jago learned?

0:27:150:27:17

Not to climb on the back of a chair.

0:27:170:27:20

Sounds like a really good lesson, yeah.

0:27:200:27:22

-You said it, Mum.

-BOTH: Bye.

0:27:220:27:24

Bye.

0:27:240:27:26

Next time on Operation Ouch!

0:27:290:27:31

Find out what you got up to inside your mum...

0:27:310:27:34

This little boy is breathing entirely through his belly button.

0:27:340:27:39

It's sweet grabbing time in Mindbenders...

0:27:390:27:41

Oh, what did you do?

0:27:410:27:43

And learn how your body gets fixed after a burn.

0:27:430:27:46

My little finger, it was actually welded onto this bit here.

0:27:460:27:50

We'll see you next time for more...

0:27:510:27:53

Operation Ouch!

0:27:530:27:54

Did you go anywhere nice on your holidays?

0:27:560:27:59

-Uh-huh.

-What have you been up to today, then?

0:27:590:28:01

-MUMBLES:

-Going on the rides.

0:28:010:28:04

Just speak a bit more clearly, I can't understand a word

0:28:040:28:07

-you're saying, Izzy.

-On the rollercoasters.

0:28:070:28:09

The doctors find out what happens when you eat with the help of a miniature Xand doll, test your ears and eyes in a baffling mind-bending trick, and join Dr Chris at work fighting infectious diseases. Meanwhile there's an unusual 'itis' in the ouch-mobile, and over in accident and emergency one patient has cut their head and another has a very wonky finger.