[The effect of lowered pressure on the diastolic ventricular function after antihypertensive treatment]

Area of Science:

• Cardiology
• Pharmacology

Background:

• Hypertension is associated with increased left ventricular (LV) mass and impaired diastolic function.
• Antihypertensive medications are crucial for managing cardiovascular risk in hypertensive patients.

Purpose of the Study:

• To investigate the effects of captopril, nifedipine, and atenolol on LV mass and diastolic function in hypertensive patients.
• To explore potential direct myocardial effects of these agents independent of blood pressure reduction.

Main Methods:

• A study involving 30 hypertensive patients with elevated LV mass and diastolic dysfunction.
• Treatment with 2-3 types of antihypertensive agents (captopril, nifedipine, atenolol) for a mean of 98 days.
• Assessment of LV mass index (LVMI) and Doppler transmitral filling parameters.

Main Results:

• A significant average decrease in LVMI (21 g/M2) was observed, though not directly correlated with blood pressure reduction.
• Marked improvements in Doppler transmitral filling indices, including reductions in PVA, Ai, A/E, and Ai/T-VTi (P < 0.01).
• Significant elevations in the ratios of E/A, Ei/Ai, and Ei/T-VTi (P < 0.01) indicated improved diastolic function.

Conclusions:

• Antihypertensive therapy with captopril, nifedipine, and atenolol effectively reduces LV mass and improves diastolic function in hypertensive patients.
• These agents may exert direct beneficial effects on the myocardium, contributing to improved cardiac function beyond blood pressure control.
• Reduction in both blood pressure and LV mass is key to ameliorating diastolic dysfunction in hypertension.