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I think it's when the patient needs more than one organ transplanting (within the same operation); lots of patients have a joint heart/lung transplant at the same time, since it's easier than just transplanting the heart.
The liver starts to fail only when more than half of it is damaged
One is not "better" than the other - they will both perform exactly the same as a non transplanted heart or lungs. Neither will make the patient bionic or superhuman. A patient with heart failure would rather have a heart transplant than a lung transplant, and vice versa. It's whatever it "better" (more useful) for the patient, but neither hearts or lung transplants are "better" overall.
A human being cannot live more than a few minutes without a functioning liver. During a liver transplant operation, a machine substitutes the function of the liver
A transplant surgeon basically transplants donated organs into someone's body that needs them. There are 4 types of transplants currently: Kidney Liver Pancreas Heart (done by cardiothoracic surgeons, not transplant surgeons in most cases)
No, neither is entitled to a liver transplant by way of their status. It's by the generosity of the donor who died that one be available, and if the liver has been donated by typical means, then it's left up to a bureaucracy to decide the recipient on behalf of the donor.
No, this is wrong. The left is taller, because the right is bulged by the diaphragm due to the presence of liver.
Other than a liver transplant the is hardly an ideal solution, there is no cure for Hemophilia A or B as of yet.
Its bigger because the right lung has more lobs then the left lung.
Each lung has more than one "lobe" or section. The right lung has three, and the left lung has only two to leave room for the heart where the upper left lobe would be.
The liver is responsible for some vital tasks like detoxification and producing certain chemicals needed for digestion. Hugh Laurie in House once said "You can't live without a liver. Hence the name." This is true. You need your liver to survive, and unlike the kidneys, the functions of the liver can not be maintained via machines. Liver transplants can be done, but transplant lists have hundreds and hundreds of people in need of a liver, many in critical condition. The point is you can't depend on a liver transplant to fix your liver problems. It's easier to take care of it than have to face the ramifications of not taking care of it. You don't necessarily have to take special steps to take care of your liver, though it wouldn't do much harm if you did. All you need to do is avoid gratuitous drinking, too much fats, etc. Basically all you need to do is have a balanced diet and healthy lifestyle.
The average time for an organ transplant operation is around 8 hours, but this timing can vary quite significantly depending upon how "easy" the surgery is. For example, first transplants are easier to do than retransplants, single transplants are easier than multiple-organ transplants. The number of transplant surgeons available and how experienced they are will also have a bearing on surgery times. Most transplants will fall within the range of 6 - 14 hours, although it is feasible that a large multiple-organ transplant could take longer.