- 行业: Health care
- Number of terms: 3413
- Number of blossaries: 0
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WebMD is an online provider of health information and services for both consumers and healthcare professionals.
When the aortic valve is diseased, it can become either stenotic (too narrow) or insufficient (leaky). In such cases, the aortic valve may need to be replaced with either a prosthetic or human valve.
Industry:Health care
An abnormality where the ends of the fingers and toes enlarge and the nails curve; often it is related to an inadequate oxygen-rich blood supply. However, it can be hereditary and completely normal. Often seen with congenital heart defects, but also seen in other conditions such as severe lung disease.
Industry:Health care
The amount of blood pumped out of a ventricle during each heartbeat. The ejection fraction evaluates how well the heart is pumping.
Industry:Health care
The radial artery is a blood vessel that carries oxygen-rich blood in the forearm. You can feel the pulse of the radial artery by feeling the inside of the wrist underneath the base of the thumb.
Industry:Health care
A medication that prevents blood from clotting; used for people at risk for stroke or blood clots.
Industry:Health care
This rare procedure is used to clean out clogged heart arteries. A DCA catheter has a hollow cylinder on the tip with an open window on one side and a balloon on the other. When the catheter is inserted into the narrowed artery, the balloon is inflated, pushing the window against the fatty matter clogging the vessel. A blade (cutter) within the cylinder rotates and shaves off any fat, which protruded into the window. The shavings are caught in a chamber within the catheter and removed. This process is repeated as needed to allow better blood flow.
Industry:Health care
A small recorder (monitor) is attached to electrodes on your chest. It is worn continuously for a period of time. If symptoms are felt, an event button can be depressed, and the heart's rhythm is recorded and saved in the recorder. The rhythm can be saved and transmitted over the phone line.
Industry:Health care
Structures that maintain the proper direction of blood flow in the heart. There are four valves in the heart: the tricuspid and the mitral valve, which lie between the atria and ventricles and the pulmonic and aortic valves which lie between the ventricles and the blood vessels leaving the heart.
Industry:Health care
Nuclear imaging is a method of producing images by detecting radiation from different parts of the body after the administration of a radioactive tracer material.
Industry:Health care
A machine that can help the pumping function of the heart. It is usually inserted through an artery in the groin area and threaded backwards into the descending thoracic aorta in the chest. In this location the balloon inflates and deflates in synchrony with the heart in order to aid the blood pumping function of the heart in people with cardiac disease.
Industry:Health care
