An electrogram was recorded from the angioplasty catheter guide wire when coronary blood flow was interrupted in 20 patients undergoing percutaneous transluminal coronary angioplasty. Monophasic action potentials were recorded from the right ventricular septum together with the routine electrocardiogram. The patients were studied during angioplasty for lesions in the left anterior descending (1...

of the angioplasty segment between the concentric and eccentric lesion subgroups was not significant (analysis of variance) at any time after PTCA. The degree of vasoconstriction observed in the angioplasty segment of both the concentric and eccentric lesion subgroups were significantly greater than that of the control segment at 15 and 30 minutes after PTCA (p CO.01 and <0.005, respectively). ...

Aortocoronary bypass surgery has been an option for treating coronary artery occlusive disease since the late 1960s; in that sense, it has been “standing by” for three decades as a backup for failed cardiologic treatments. In the late 1970s, balloon angioplasty was introduced for treating coronary artery disease. This procedure is performed in a radiology suite (the catheterization laboratory),...

In a prospective evaluation of the safety of short-term observation after elective percutaneous transluminal coronary angioplasty (PTCA) in 1,900 consecutive patients, 1 of 1,680 patients triaged to discharge after 4 hours of observation reached the primary end point of acute recurrent ischemia, 7 patients underwent repeat PTCA during 4 hours of observation, and 66 of 187 patients selected for ...

background: the incidence of restenosis in patients suffering from coronary artery disease after undergoing angioplasty is of paramount importance. accordingly, this study aimed to investigate factors affecting the time of the first incidence of restenosis in patients undergone angioplasty in the city of zanjan, iran.   methods: this retrospective cohort study was conducted on 421 patients who ...

In recent years, lasers are being utilized in cardiovascular surgery. Since the 1980's we have investigated angioplasty using an Argon laser for patients with obstructive arterial diseases. This technique aims to open the obstructive arterial lumen. Based on the excellent results of experimental studies, the technique has been clinically applied. Laser angioplasty was carried out in 84 patients...

  Introduction: Percutaneous transluminal coronary angioplasty (PTCA) is an effective method for revascularizing of stenotic coronary vessels. Lack of response to this treatment, either in symptomatic or asymptomatic patients, is usually due to incomplete revascularization, restenosis, and/or irreversibility of myocardial perfusion. Introduction of a noninvasive metho...

OBJECTIVES This study sought to compare acute lumen changes and late lumen narrowing during and after excimer laser-assisted balloon angioplasty, measured by quantitative coronary angiography, with the immediate and long-term outcome of balloon angioplasty alone. BACKGROUND Although excimer laser coronary angioplasty is used as an adjunct or alternative to balloon angioplasty, limited compara...

OBJECTIVES The aim of the study was to investigate whether omega-3 fatty acids (n-3 FA) reduce the occurrence of restenosis after percutaneous transluminal coronary angioplasty. BACKGROUND Meta-analyses have shown significant reduction of restenosis after coronary angioplasty upon supplementation with n-3 FA. METHODS In a prospective, placebo-controlled, double-blind study, 500 patients wer...

a 74-year-old male patient was admitted to our emergency department with post-mi angina. on account of the anginal complaint that continued for three days, a coronary artery angiography was undertaken. a percutaneous transluminal coronary angioplasty was performed, followed by the implantation of a coronary stent, and coronary perfusion (timi-3) was achieved in the left anterior descending arte...