angioplasty /an·gio·plas·ty/ (an´je-o-plas″te) an angiographic procedure for elimination of areas of narrowing in the blood vessels.
percutaneous transluminal coronary angioplasty (PTCA),
angioplasty [an´je-o-plas″te]
balloon angioplasty inflation and deflation of a balloon catheter inside an artery, stretching the intima and leaving a ragged interior surface, triggering a healing response and breaking up of plaque. 
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Balloon angioplasty, the expanded balloon pressing against a stenotic site in an artery.
percutaneous transluminal angioplasty a type of balloon angioplasty in which the catheter is inserted through the skin and through the lumen of the vessel to the site of the narrowing.
percutaneous transluminal coronary angioplasty (PTCA) percutaneous transluminal angioplasty to enlarge the lumen of a sclerotic coronary artery.
| percutaneous transluminal coronary angioplasty n. Abbr. PTCA A procedure for enlarging a narrowed arterial lumen by peripheral introduction of a balloon-tip catheter followed by dilation of the lumen as the inflated catheter tip is withdrawn. |
percutaneous transluminal coronary angioplasty (PTCA),
a technique in the treatment of atherosclerotic coronary heart disease and angina pectoris in which some plaques in the arteries of the heart are flattened against the arterial walls, resulting in improved circulation. The procedure involves threading a catheter through the vessel to the atherosclerotic plaque, inflating and deflating a small balloon at the tip of the catheter several times, and then removing the catheter. The procedure is performed under radiographic or ultrasonic visualization. When it is successful, the plaques remain compressed and the symptoms of heart disease, including the pain of angina, are decreased. The alternative to this treatment is coronary bypass surgery, which is more expensive and dangerous and requires longer hospitalization and rehabilitation.
angioplasty [an´je-o-plas″te]
an angiographic procedure for elimination of areas of narrowing in blood vessels.
balloon angioplasty angioplasty in which a balloon catheter is inflated inside an artery, stretching the intima and leaving a ragged interior surface after deflation, which triggers a healing response and breaking up of plaque.
percutaneous transluminal angioplasty a type of balloon angioplasty in which the catheter is inserted through the skin and through the lumen of the vessel to the site of the narrowing.
percutaneous transluminal coronary angioplasty (PTCA) percutaneous transluminal angioplasty to enlarge the lumen of a sclerotic coronary artery (see accompanying illustration). This provides an alternative to cardiac bypass surgery for selected patients with ischemic heart disease. See also heart.
Percutaneous transluminal coronary angioplasty (PTCA). A, Balloon-tipped catheter positioned in blocked artery. B, Balloon is centered. C, Balloon expands to (D) compress blockage. E, Artery diameter opened. From Polaski and Tatro, 1996.
percutaneous transluminal coronary angioplasty
PCTA Interventional cardiology A procedure in which an angioplasty balloon is inserted percutaneously into the arteries advanced to a stenosis, and inflated, reopening the lumen Indications
Single and multivessel CAD, stable angina on exertion, unstable angina, acute MI–'primary' PCTA, stenosed renal arteries, arteries with fibromuscular hyperplasia, post-thrombolytic therapy Success rate 90%; re-stenosis in 30%;
success is lower with stenoses that are chronic, long, eccentric, angulated, calcified, at branching, or with intraluminal thrombi, unstable angina, ↑ age, ♀. See Balloon angioplasty, Coronary artery bypass surgery, Excimer laser therapy.
Cf Balloon valvoplasty.
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