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Effect of verapamil in elderly patients with left ventricular diastolic dysfunction as a cause of congestive heart
M J Hung1, W J Cherng, L T Kuo
1Department of Medicine, Chang Gung Memorial Hospital, Keelung, Taiwan.
Insights
Verapamil improved congestive heart failure (CHF) and exercise tolerance in elderly patients with diastolic dysfunction. This treatment enhanced left ventricular (LV) diastolic function, offering a potential therapeutic benefit.
Area of Science:
- Cardiology
- Geriatrics
- Pharmacology
Background:
- Elderly patients with preserved left ventricular (LV) systolic function often experience diastolic dysfunction, leading to congestive heart failure (CHF).
- Assessing and improving LV diastolic function is crucial for managing CHF in this population.
Purpose of the Study:
- To evaluate the effect of verapamil on left ventricular (LV) diastolic function in elderly patients with CHF.
- To determine if verapamil improves clinical symptoms and exercise capacity in patients with diastolic dysfunction.
Main Methods:
- A randomized, placebo-controlled crossover study involving 15 elderly patients with CHF (NYHA class II-III) and normal LV systolic function.
- Verapamil (120 mg daily) or placebo was administered for three months, with a one-week washout period.
- Assessments included congestive heart failure (CHF) score, treadmill exercise test, and Doppler echocardiography.
Main Results:
- Verapamil significantly improved CHF scores and increased exercise time compared to placebo.
- Doppler echocardiography revealed significant improvements in LV diastolic function with verapamil, including increased mitral A wave duration/pulmonary venous atrial systolic reversal duration and decreased isovolumic relaxation time.
- Verapamil did not alter blood pressure, heart rate, LV ejection fraction, LV mass, or cardiac output.
Conclusions:
- Three months of verapamil treatment can effectively improve congestive heart failure (CHF) symptoms, enhance exercise tolerance, and improve left ventricular (LV) diastolic function in elderly patients.
- Verapamil is a potential therapeutic option for elderly patients with diastolic dysfunction contributing to CHF.
Abstract:
Fifteen elderly patients with normal left ventricular (LV) systolic function and New York Heart Association functional class II-III were studied. The effect of verapamil on LV diastolic function was assessed by congestive heart failure (CHF) score, treadmill exercise test, and Doppler echocardiography at baseline, and after each three-month treatment period (placebo or verapamil 120 mg once daily), separated by a one-week washout period before crossover. Blood pressure, heart rate, LV ejection fraction, LV mass, and cardiac output were unaltered by placebo or verapamil. Verapamil treatment significantly improved CHF score at 3 months (3.5 +/- 0.5, p<0.05) compared with baseline (5.6 +/- 0.5) or placebo (5.5 +/- 0.5). The exercise time was similar at baseline (7.4 +/- 1.2 min) and after placebo (7.4 +/- 1.3 min) treatment but significantly (p<0.05) increased after verapamil (8.3 +/- 1.2 min) treatment. The ratio of mitral A wave duration/pulmonary venous atrial systolic reversal duration increased after verapamil (1.11 +/- 0.08) treatment compared with placebo (0.91 +/- 0.07, p<0.05) and baseline (0.89 +/- 0.08) which had similar durations. The isovolumic relaxation time was significantly (p<0.05) decreased from 84 +/- 12 ms at baseline and 86 +/- 13 ms with placebo to 73 +/- 9 ms with verapamil. The results of this study suggest that in elderly patients with Doppler evidence of diastolic dysfunction as the cause of CHF, three months treatment with verapamil can improve CHF, increase exercise tolerance and improve LV diastolic function.
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