Why is blood not spilling out if the surgeon is operating on for example stomach.
In: Biology
What others have said about cautery and ligating. But I’ll add two others for different kinds of surgery; in orthopedic surgeries they will have the med student or junior resident use all their strength to wrap your arm or leg in essentially a giant rubber band, pushing all the blood back into the body. Once this is on a tourniquet will be placed to prevent blood from coming back into the limb for the duration of the surgery. This is especially useful for joint replacements because having blood in a joint can lead to destruction of whatever bone is left over.
Then when you come into the ER or have a minor surgery like a cyst removed or abscess drained, we’ll inject the skin and surrounding tissue with a mix of lidocaine and epinephrine. This simultaneously numbs the area so you don’t have to be sedated or go under anesthesia, and constricts small blood vessels so we have a clean, relatively bloodless field to work with.
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