coronary artery perforation is a rare, but potentially serious, complication of percutaneous coronary intervention and is associated with a high incidence of death, q-wave myocardial infarction, and emergency coronary bypass surgery. management is different but requires prompt recognition and treatment. we describe a case of coronary perforation only after guidewire removal and also review the ...

introduction: coronary angiography and angioplasty procedures lead to significant radiation exposure of patients. in the current study, the average radiation dose to patients during angiography in the angiography department of shahid-madani hospital was determined. materials and methods: an image intensifier based angiography unit (philips bh 3000) was used for angiography procedures. the accur...

OBJECTIVE To assess the outcome of a policy of emergency coronary angiography with or without rescue angioplasty in patients with acute myocardial infarction and ECG evidence of failed reperfusion after thrombolysis. DESIGN A cohort study. SETTING Regional cardiothoracic unit. PATIENTS 197 patients with acute myocardial infarction fulfilling a simple ECG criterion of failed reperfusion. ...

BACKGROUND The major cause of acute coronary syndrome (ACS) is vessel thrombosis related to plaque rupture. Optical coherence tomography (OCT) is a feasible and effective technique to visualise a thrombus in vivo. AIM To present the relationship between cardiac enzymes leakage before coronary angioplasty and thrombus visualised by OCT. METHODS A population of 48 consecutive patients (mean a...

band, increasing from less than 1,000 per year in 1979–1981 to more than 300,000 per year in 1991. This was similar to the annual number of bypass operations . The number of annual catheterizations has now grown to approximately 1.4 million, with one of three patients who undergo diagnostic cardiac catheterization being referred for coronary angioplasty, compared with one of four being referred...

OBJECTIVES This study compared the relative risks and benefits of coronary angioplasty and coronary artery bypass graft surgery in patients > 70 years old. BACKGROUND Few objective, comparative data exist to guide the clinician in the decision to use bypass surgery or angioplasty in elderly patients. METHODS The study was a case-control, retrospective analysis of 195 consecutive patients wh...

We review the role of endothelin (ET) A-receptors (R) on the coronary circulation. ET-1 maintains the normal coronary artery tone. ET-1 plasma levels are increased during and after coronary angioplasty and this increase is related to myocardial ischaemia rather than to mechanical artery injury. ETAR antagonists inhibit coronary artery vasoconstriction induced by ET release after coronary angiop...

OBJECTIVES We hypothesized that percutaneous transluminal coronary angioplasty performed on coronary stenoses that have demonstrated rapid angiographic progression would be associated with a high risk of restenosis. BACKGROUND High rates of restenosis have been documented after percutaneous transluminal coronary angioplasty of unstable lesions and of lesions that recur rapidly after a success...

Background. Several studies suggest that repeated percutaneous transluminal coronary angioplasty procedures at the same site are associated with a progressively increasing risk of further restenosis and that short time intervals between successive procedures are predictive of future restenoses. Methods and Results. We assessed by quantitative coronary angiography the angiographic probability of...

BACKGROUND Coronary-stent placement is a new technique in which a balloon-expandable, stainless-steel, slotted tube is implanted at the site of a coronary stenosis. The purpose of this study was to compare the effects of stent placement and standard balloon angioplasty on angiographically detected restenosis and clinical outcomes. METHODS We randomly assigned 410 patients with symptomatic cor...