Advantages and disadvantages of off-pump bypass surgery, from the Harvard Heart Letter
The heart-lung machine, first used in 1953, adds oxygen to blood and circulates it around the body. This lets doctors stop the heart, making it safer and easier to bypass cholesterol-clogged coronary arteries or fix other cardiac problems. While the machine helped save and improve countless lives, some experts blamed the heart-lung machine (also known as the pump) for the foggy thinking and memory loss that sometimes follows bypass surgery. In an effort to avoid this problem, surgeons developed ways to operate on the heart while it continued to beat, avoiding the pump.
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