Abstract | UNLABELLED:
Nisoldipine is a second generation dihydropyridine calcium antagonist having characteristics of strong coronary artery dilating effect and less negative inotropic action. The purpose of this study was to evaluate the effect of nisoldipine on the cardiac function (systolic and diastolic) and the exercise tolerance, in patients with hypertrophic cardiomyopathy (HCM). SUBJECTS: Twenty-three patients with HCM were studied. METHODS: We measured the following indices using M-mode and pulsed wave Doppler echocardiography before and after nisoldipine therapy; left ventricular fractional shortening (LVFS), isometric relaxation time (IRT), deceleration half-time (DHT) of early diastolic mitral (E) flow, late diastolic mitral (A) flow and A/E ratio. Symptom-limited treadmill exercise test was performed. Exercise tolerance (EX) time was measured. Nisoldipine of 10 mg/day was orally administered. Same tests were repeated on day 14 and after 6 months. RESULTS: 1) Short-term effects; LVFS did not change (55.9 +/- 5.9%-->57.0 +/- 7.4%, NS) after 2 weeks. However, LV diastolic function significantly improved (IRT; 92.1 +/- 7.7 ms-->85.2 +/- 11.6 ms, p < 0.05, DHT; 70.7 +/- 16.2 ms-->63.3 +/- 3.7 ms, p < 0.05). EX time increased (8.9 +/- 2.6 min-->10.0 +/- 3.3 min, p < 0.05), 2) Long-term effects; LV diastolic function had a tendency toward improvement, but is statistically not significant (IRT; 91.1 +/- 7.6-->83.8 +/- 11.6 ms, DHT; 73.1 +/- 23.4-->61.0 +/- 11.4 ms, A/E; 1.26 +/- 0.29-->1.11 +/- 0.36) after 6 months. EX time was significantly increased (9.4 +/- 1.7--> 10.1 +/- 1.7 min, p < 0.05). CONCLUSIONS:
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Authors | T Tokushima, T Utsunomiya, T Ogawa, K Kidoh, Y Ohtsubo, T Ryu, K Yoshida, T Ogata, S Tsuji, S Matsuo |
Journal | Basic research in cardiology
(Basic Res Cardiol)
1996 Jul-Aug
Vol. 91
Issue 4
Pg. 329-36
ISSN: 0300-8428 [Print] Germany |
PMID | 8874782
(Publication Type: Journal Article)
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Chemical References |
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Topics |
- Adult
- Aged
- Cardiomyopathy, Hypertrophic
(drug therapy, physiopathology)
- Clinical Trials as Topic
- Diastole
(physiology)
- Echocardiography, Doppler
(methods)
- Exercise Tolerance
(drug effects, physiology)
- Female
- Heart
(drug effects, physiology)
- Hemodynamics
(drug effects, physiology)
- Humans
- Male
- Middle Aged
- Nisoldipine
(pharmacology)
- Systole
(physiology)
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