title: Open evaluation of labetalol in the treatment of angina pectoris occurring in hypertensive patients.
abstract: 1 In nine hypertensive subjects with angina pectoris, labetalol diminished the incidence of chest pain occurring spontaneously or induced by exercise. 2 Labetalol lowered BP in all subjects. 3 Exercise tolerance at maximum levels was increased by labetalol. 4 Improved cardiac function by labetalol may be related to decreased afterload on the left ventricle, and diminished oxygen utilization by the myocardium.
authors.forename: E M
authors.initials: EM
authors.lastname: Besterman
authors.forename: M
authors.initials: M
authors.lastname: Spencer