Alteration of left ventricular diastolic filling in hypertensive patients: effects of nitrendipine and atenolol

Area of Science:

• Cardiology
• Pharmacology
• Hypertension Research

Background:

• Essential hypertension is often associated with left ventricular filling abnormalities.
• Diastolic dysfunction can precede or accompany systolic dysfunction in hypertensive patients.
• Understanding the effects of antihypertensive medications on diastolic function is crucial.

Purpose of the Study:

• To evaluate the chronic effects of nitrendipine on left ventricular diastolic filling in patients with essential hypertension.
• To compare diastolic function in hypertensive patients with normal volunteers and asymptomatic aged individuals.
• To assess the impact of adding atenolol to nitrendipine therapy on diastolic parameters.

Main Methods:

• Radionuclide left ventricular angiography was used to analyze diastolic filling parameters.
• Measurements included ejection fraction, peak filling rate, time to peak filling rate, and early diastolic filling fraction.
• Patients with essential hypertension were treated with nitrendipine for six weeks, with some receiving additional atenolol.

Main Results:

• Hypertensive patients exhibited impaired early diastolic filling compared to controls before treatment.
• Nitrendipine therapy significantly improved diastolic filling parameters, including peak filling rate and early diastolic filling fraction.
• Combination therapy with atenolol further enhanced the positive effects on diastolic indexes.

Conclusions:

• Short-term nitrendipine therapy effectively improves early diastolic dysfunction in essential hypertension.
• The addition of a beta-blocking agent (atenolol) can further augment these beneficial effects on diastolic function.
• These findings highlight the potential of combined therapy for managing hypertensive cardiac complications.