Once a day indapamide therapy in hypertension. Effects on the heart and peripheral arterial circulation.

Abstract

Indapamide, a sulphonamide derivative, was prescribed for 8 wk at low dose (2.5 mg once a day) to 14 hypertensive patients in order to investigate its effects on systolic and diastolic blood pressure (SBP, DBP), cardiac function and peripheral arterial resistance (PAR). During treatment decreases in both SBP and DBP were observed without any change in HR [heart rate] in the supine and standing positions and on exercise. As a result cardiac work was significantly reduced. Slight changes in pre-ejection period (PEP) and left ventricular ejection time (LVET) along with a more significant decrease in rate of rise of left ventricular pressure (DBP to PEP ratio) were observed during treatment. An increase in RBF and a decrease in PAR were also detected in the peripheral circulation. Indapamide apparently antagonizes the cardiovascular effects of catecholamines.