956 results found
Health topics
… balloon pump (IABP) is a mechanical device that helps the heart pump blood. It is a long, thin tube called a catheter … The balloon inflates and deflates in the same rhythm as the heart. It helps the heart pump blood to the body. An IABP is usually for …
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… syndrome? Wolff-Parkinson-White (WPW) syndrome is a heart rhythm problem that causes a very fast heart rate. WPW is one type of supraventricular tachycardia … links the upper chambers (atria) and lower chambers (ventricles) of the heart. In normal hearts, the only …
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… Overview Premature ventricular contractions (PVCs) are heartbeats that occur earlier than they should. These early beats briefly interrupt the heart's rhythm. A PVC may feel like a skipped heartbeat or a … can happen in the upper chambers (atria) or lower chambers (ventricles) of the heart. With PVCs, the ventricles beat …
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… valve. The aortic valve allows blood to flow from the heart's lower left chamber (ventricle) into the aorta and to … prevents the valve from opening properly, forcing the heart to work harder to pump blood through the valve. This … pressure to build up in the left ventricle and thickens the heart muscle. Your heart can make up for aortic valve …
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… , this valve doesn't close as it should. With each heartbeat, some of the blood leaks back (regurgitates) … left ventricle. The body doesn't get enough blood, so the heart has to work harder to make up for it. You can have … Causes of long-term aortic valve regurgitation include heart problems you're born with, calcium buildup on the …
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… tachycardia? Ventricular tachycardia is a type of fast heart rhythm that starts in the lower part of the heart (ventricles). The heart might beat more than 100 beats per …
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… is severe and in danger of doing irreparable damage to your heart. The risk of surgery is justified if the regurgitation … is severe enough to threaten the health of your heart or your life. Your doctor will check many things to … you have any. Your ejection fraction (how much blood your heart is pumping out to your body). The size of your left …
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… fih-bruh-LAY-shun") is a common type of irregular heartbeat (arrhythmia). Normally, the heart beats in a strong, steady rhythm. In atrial … lower chambers of the heart. (These chambers are called the ventricles.) The ventricles may beat fast and without a …
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… Information Overview For the body to function properly, the heart needs to pump blood at a sufficient rate to maintain … output is the term that describes the amount of blood your heart pumps each minute. Doctors think about cardiac output … of the following equation: Cardiac output = stroke volume × heart rate Your stroke volume is the amount of blood your …
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… the result of ventricular tachycardia (a type of rapid heart rate) or other dangerous arrhythmias , which can be … arrhythmias and successfully restore a normal heartbeat. Because of the possible increased risk of sudden … cardiomyopathy. In DL Mann et al., eds., Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine , 10th …
