A new exercise test was used to assess the effects of coronary angioplasty in 22 patients. Twenty five angioplasty procedures were performed and the exercise maximal ST segment/heart rate slope was measured before and after operation on 23 occasions; in two patients treated for unstable angina the slope was measured only after the two procedures. Successful angioplasty (23 of the 25 procedures)...

Today, the majority of coronary stents are balloon-expandable and are deployed using a balloon-tipped catheter. To improve deliverability, the membrane of the angioplasty balloon is typically folded about the catheter in a pleated configuration. As such, the deployment of the angioplasty balloon is governed by the material properties of the balloon membrane, its folded configuration and its att...

BACKGROUND Previous studies have shown the feasibility of peripheral arterial ultrasound angioplasty. METHODS AND RESULTS In this report, we describe the use of percutaneous therapeutic ultrasound for coronary angioplasty. In vitro, 11 postmortem, atherosclerotically occluded coronary arteries were obtained to assess catheter-delivered ultrasound for arterial recanalization as well as for ass...

UNLABELLED A high number (30%-50%) of reversible defects have been detected early after coronary balloon angioplasty. Inadequate luminal enlargement despite a good angiographic appearance has been suggested as a possible mechanism of these perfusion abnormalities, and some reports have shown better coronary flow reserve after coronary stent implantation than after balloon dilatation. The primar...

OBJECTIVES There are controversial opinions about the expediency of performance of the surgical angioplasty of the left main coronary artery (LMCA) and/or proximal segment of the right coronary artery (RCA) in rare cases of isolated lesion or with limited involving of distal coronary branches. One of the many fears restraining a wider performance of this operation is the uncertainty in longevit...

The histopathological appearances of seven coronary arteries obtained from four patients after repeated percutaneous transluminal coronary angioplasty were analysed. A complex picture was found; typically there were ruptured atherosclerotic plaques, plaque dissection, and a fibrous tissue response. The histopathological appearance of older and more recent fibrous lesions was different. Older le...

To determine the relative economic impact of alternative methods of coronary revascularization, in-hospital patient accounts were reviewed in 149 patients undergoing elective coronary angioplasty (n = 50), coronary atherectomy (n = 72) or intracoronary stent placement (n = 27) over an 18-month period. Clinical and angiographic features were similar in the 3 groups, except that prior restenosis ...

Curtis JP, Krumholz HM. Delay in presentation and reperfusion therapy in ST-elevation myocardial infarction. Am J Med 2008;121:316–323. 44. Magid DJ, Calonge BN, Rumsfeld JS, Canto JG, Frederick PD, Every NR, Barron HV, for the National Registry of Myocardial Infarction 2 3 Investigators. Relation between hospital primary angioplasty volume and mortality for patients with acute MI treated with ...