PMID- 8859934 OWN - NLM STAT- MEDLINE DCOM- 19970410 LR - 20190724 IS - 0160-2446 (Print) IS - 0160-2446 (Linking) VI - 27 IP - 5 DP - 1996 May TI - Effect of mibefradil on left ventricular diastolic function in patients with congestive heart failure. PG - 652-6 AB - Calcium antagonists have antihypertensive and antianginal properties. In heart failure, however, their use can be hazardous, as systolic function can deteriorate. This may not be true of the new calcium antagonist mibefradil, which has a new chemical structure. Calcium antagonists may also be beneficial for diastolic left ventricular function in coronary artery disease. To investigate the possible effects of mibefradil on diastolic left ventricular function, we performed the present study as a multicenter, double-blind,placebo-controlled, multiple-dose safety trial. Fifteen patients with New York Heart Association (NYHA) class II or III for dyspnea and depressed ejection fraction (<40%) due to a previous myocardial infarction were investigated. The measured nuclear angiographic parameters included ejection fraction (EF), peak ejection rate (PER), and peak filling rate (PFR). Systolic and diastolic blood pressure (SBP, DBP) and heart rate (HR) were also obtained. Group I (5 patients) received placebo medication; group IIA (6 patients) received mibefradil 6.25, 12.5, or 25 mg/day; and group IIB (4 patients) received mibefradil 50 or 100 mg/day. Measurements were made before and after the first dose and after 1 week of treatment before and after the final dose. Mibefradil clearly decreased HR (repeated-measures analysis of variance p < 0.05). No statistically significant effects of mibefradil were noted on SBP or DBP or on systolic and diastolic left ventricular function. In our study conditions, mibefradil caused no worsening of systolic function and preserved diastolic function in short-term treatment of patients with decreased EF and heart failure. FAU - Muntinga, H J AU - Muntinga HJ AD - Department of Cardiology, Martini Hospital, Groningen, The Netherlands. FAU - van der Vring, J A AU - van der Vring JA FAU - Niemeyer, M G AU - Niemeyer MG FAU - van den Berg, F AU - van den Berg F FAU - Knol, H R AU - Knol HR FAU - Bernink, P J AU - Bernink PJ FAU - van der Wall, E E AU - van der Wall EE FAU - Blanksma, P K AU - Blanksma PK FAU - Lie, K I AU - Lie KI LA - eng PT - Clinical Trial PT - Journal Article PT - Randomized Controlled Trial PL - United States TA - J Cardiovasc Pharmacol JT - Journal of cardiovascular pharmacology JID - 7902492 RN - 0 (Benzimidazoles) RN - 0 (Calcium Channel Blockers) RN - 0 (Tetrahydronaphthalenes) RN - 27B90X776A (Mibefradil) SB - IM MH - Adult MH - Aged MH - Benzimidazoles/*pharmacology MH - Calcium Channel Blockers/*pharmacology MH - Diastole/*drug effects MH - Double-Blind Method MH - Female MH - Heart Failure/*physiopathology MH - Humans MH - Male MH - Mibefradil MH - Middle Aged MH - Tetrahydronaphthalenes/*pharmacology MH - Ventricular Function, Left/*drug effects EDAT- 1996/05/01 00:00 MHDA- 1996/05/01 00:01 CRDT- 1996/05/01 00:00 PHST- 1996/05/01 00:00 [pubmed] PHST- 1996/05/01 00:01 [medline] PHST- 1996/05/01 00:00 [entrez] AID - 10.1097/00005344-199605000-00006 [doi] PST - ppublish SO - J Cardiovasc Pharmacol. 1996 May;27(5):652-6. doi: 10.1097/00005344-199605000-00006.