[Analysis of the composition and spatial disposition of atherosclerotic plaques localized in epicardial coronary artery bifurcations in adults].

Purpose: To analyze macro and microscopic features of atherosclerotic plaques located in bifurcation of coronary arteries, defining their spatial disposition in those sites.

Methods: We studied 38 bifurcations of coronary arteries of patients whose cause of death was related to coronary artery disease. Histologic sections of 0.

[Efficacy and tolerance of a new calcium-channel blocking agent (nitrendipine) in the treatment of arterial hypertension].

Purpose: Assess the efficacy and tolerability of nitrendipine, 20 mg/day, in mild to moderate essential hypertension (diastolic blood pressure 95 to 114 mmHg).

Material And Methods: Twenty patients in an open comparative trial (drug x placebo) during six weeks. Blood pressure and heart rate were measured in orthostatic and supine position and after hand-grip maneuver every two weeks.

[Mitral valvuloplasty with balloon catheterization in pregnant patients. Report of 3 cases].

The authors report on three pregnant patients with mitral stenosis with heart failure in functional class IV (NYHA) unresponsive to clinical treatment. They were submitted to mitral valvuloplasty, with significant clinical improvement, and were, hence, asymptomatic. Despite the small number of cases, it may be concluded that the procedure is simple and safe, which can be attested by the successful results.