Document Detail


The effects of pretreatment with nitroglycerin on ischemic left ventricular dysfunction during coronary angioplasty.
MedLine Citation:
PMID:  1906735     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
To evaluate the degree to which nitroglycerin reduces myocardial ischemia and dysfunction induced by transient coronary occlusion, 19 patients were studied during coronary angioplasty of the left anterior descending coronary artery. After a control occlusion of 60 seconds, 0.2 mg nitroglycerin was administered intravenously and the occlusion was repeated for 60 seconds. Before and during the occlusion period, pulmonary capillary wedge pressure was measured, the intracoronary ECG was recorded, and ventricular volumes, ejection fraction, and regional systolic shortening were obtained by digital subtraction angiography. Nitroglycerin caused a significant fall in pulmonary capillary wedge pressure before (10 vs. 7 mmHg) and at 60 seconds occlusion (18 vs. 14 mmHg), but did not significantly delay the rise in wedge pressure (37 vs. 44 seconds). End-systolic left ventricular volume at 60 seconds of occlusion was reduced by nitroglycerin (77 vs. 68 ml), whereas regional shortening of the ischemic segments remained unchanged (22 vs. 23%). Nitroglycerin did not delay the onset of ischemic ST-segment elevation (14 vs. 14 seconds) and had no effect on the changes of ST elevation in the intracoronary ECG (1.9 vs. 1.9 mV). These findings suggest that intravenous nitroglycerin reduces filling pressure and slightly improves left ventricular global function during acute coronary occlusion. Nitroglycerin, however, has little effect on ischemia-induced regional dysfunction and on ST-segment elevation in the intracoronary ECG.
Authors:
I Amende; G Herrmann; R Simon; W P Hood; P Wenzlaff; P R Lichtlen
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Cardiovascular drugs and therapy / sponsored by the International Society of Cardiovascular Pharmacotherapy     Volume:  5     ISSN:  0920-3206     ISO Abbreviation:  Cardiovasc Drugs Ther     Publication Date:  1991 Apr 
Date Detail:
Created Date:  1991-08-29     Completed Date:  1991-08-29     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  8712220     Medline TA:  Cardiovasc Drugs Ther     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  497-501     Citation Subset:  IM    
Affiliation:
Department of Cardiology, Medical University Hannover, FRG.
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Angioplasty, Transluminal, Percutaneous Coronary*
Electrocardiography / drug effects
Female
Hemodynamics / drug effects
Humans
Injections, Intravenous
Male
Middle Aged
Nitroglycerin / pharmacology*
Premedication
Ventricular Function, Left / drug effects*
Chemical
Reg. No./Substance:
55-63-0/Nitroglycerin

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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