PMID- 9422837 OWN - NLM STAT- MEDLINE DCOM- 19980203 LR - 20200225 IS - 0160-9289 (Print) IS - 1932-8737 (Electronic) IS - 0160-9289 (Linking) VI - 20 IP - 12 DP - 1997 Dec TI - Hemodynamic action of captopril in coronary patients with heart failure tolerant to nitroglycerin. PG - 999-1004 AB - BACKGROUND: At present there is little dispute that clinical tolerance of organic nitrates occurs during long-term treatment of patients with stable angina pectoris and congestive heart failure. HYPOTHESIS: Captopril exerts a favorable hemodynamic effect in coronary patients with heart failure who are clinically tolerant to nitroglycerin. METHODS: Development of nitrate tolerance was observed during intravenous nitroglycerin treatment (10 mg/h) in 16 of 19 patients (7 women, 12 men; mean age 56 +/- 8 years) with coronary heart disease [stenosis > or = 75%, New York Heart Association (NYHA) classes II-III). The criterion applied was a loss of efficacy of at least 50% with regard to mean pulmonary capillary wedge pressure compared with the maximum effect of nitrate. The effect of captopril (50 mg p.o.) was determined in a blank test. Captopril (50 mg p.o.) was administered again at the stage of clinically manifest nitrate tolerance. RESULTS: Compared with the effect of captopril alone, significantly more pronounced reductions in mean pulmonary capillary wedge pressure (33% compared with 27%) and in mean pulmonary arterial pressure (36% compared with 17%) and significantly greater increases in cardiac index (14% compared with 7%) and stroke work index (34% compared with 18%) (p < 0.05 in each case; Wilcoxon test for linked random samples) were measured. Maintaining nitroglycerin infusion, the effect of captopril (at least 90% of the maximum effect) lasted for 123 +/- 24 min. The baseline values (at least 75% decline in the effect of captopril) were only reached after 369 +/- 34 min. CONCLUSION: The results document a favorable hemodynamic effect of captopril in nitrate tolerance which is significantly better than that of captopril alone. FAU - Stork, T AU - Stork T AD - Karl Olga Krankenhaus, Department of Cardiology and Intensive Care, Stuttgart, Germany. FAU - Eichstadt, H AU - Eichstadt H FAU - Mockel, M AU - Mockel M FAU - Gareis, R AU - Gareis R FAU - Bodemann, T AU - Bodemann T FAU - Muller, R AU - Muller R LA - eng PT - Comparative Study PT - Journal Article PL - United States TA - Clin Cardiol JT - Clinical cardiology JID - 7903272 RN - 0 (Angiotensin-Converting Enzyme Inhibitors) RN - 0 (Vasodilator Agents) RN - 9G64RSX1XD (Captopril) RN - G59M7S0WS3 (Nitroglycerin) SB - IM MH - Aged MH - Angiotensin-Converting Enzyme Inhibitors/administration & dosage/adverse effects/*therapeutic use MH - Captopril/administration & dosage/adverse effects/*therapeutic use MH - Coronary Disease/complications/drug therapy/*physiopathology MH - Drug Administration Routes MH - Drug Therapy, Combination MH - Female MH - Heart Failure/complications/drug therapy/*physiopathology MH - Hemodynamics/drug effects MH - Humans MH - Male MH - Middle Aged MH - Nitroglycerin/administration & dosage/adverse effects/*therapeutic use MH - Reproducibility of Results MH - Safety MH - Treatment Outcome MH - Vasodilator Agents/administration & dosage/adverse effects/*therapeutic use PMC - PMC6655751 EDAT- 1998/01/10 00:00 MHDA- 1998/01/10 00:01 PMCR- 2009/02/03 CRDT- 1998/01/10 00:00 PHST- 1998/01/10 00:00 [pubmed] PHST- 1998/01/10 00:01 [medline] PHST- 1998/01/10 00:00 [entrez] PHST- 2009/02/03 00:00 [pmc-release] AID - CLC4960201205 [pii] AID - 10.1002/clc.4960201205 [doi] PST - ppublish SO - Clin Cardiol. 1997 Dec;20(12):999-1004. doi: 10.1002/clc.4960201205.