A few days ago
flipsandtumbles

Biology homework help!?

What is special about the dialysis tubing that makes it useful in surgical operations???

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A few days ago
Anonymous

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Dialysis tubing is made of cellulose (cellophane) and is used effectively for surgical operations by allowing certain molecules to pass through and certain not to.
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A few days ago
777
The aorta is a big pipe (artery) which carries blood from your heart to your legs. It runs deep in your tummy down to the level of your navel. There it branches into the two arteries which run down to your legs. Sometimes the aorta forms a blow-out like a balloon (an aneurysm). This is dangerous because the aneurysm can leak or burst, causing fatal internal bleeding. Sometimes pieces of the lining of the aneurysm break off and block the leg arteries. The aneurysm needs to be replaced by a new artery.

You will have a general anaesthetic and be completely asleep during the operation. A cut is made in the skin of the tummy, usually to the left of the navel, from the ribs down to the groin. A new pipe (artery) , made of a tube of very strong plastic fabric, is used to replace the diseased part of the aorta and is stitched in place inside the aneurysm. It is called a graft. The cut in your tummy is then stitched up. Sometimes the two arteries which run to your legs have aneurysms as well. A new pipe made from the same material as described before, is shaped like a pair of trousers is then used to make the repair. The turnups of the trousers are stitched to the leg arteries. An extra cut in each groin is needed for this type of operation. If one or more arteries are blocked, they may be operated on at the same time. The new pipes last for 20 years and more. The operation takes about three to four hours.

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