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What are the catheters made of?

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What are the catheters made of?

(a) Polyethylene fluoride

(b) Polyethylene terephthalate

(c) Polyethylene

(d) Polyethylene chloride

The question was posed to me in a national level competition.

This intriguing question comes from Angioplasty topic in portion Diagnostic Investigation in Neurology and Cardiology of Clinical Science

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Correct option is (b) Polyethylene terephthalate

Explanation: PET is strong and a sturdy structure. It is a thermoplastic and can inflate to decent levels. A very thin coating of PET is needed to form the balloon. The balloon needs to be able to bear a good amount of pressure while being inflated and should be though to allow the plaque to be pushed aside when being inflated. PET has all these properties and so is a good choice.

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