Document Detail

Acute antianginal hemodynamic effects of nicardipine in coronary artery disease.
MedLine Citation:
PMID:  2301244     Owner:  NLM     Status:  MEDLINE    
To define the short-term effects of intravenous nicardipine on exercise- and pacing-induced myocardial ischemia, 15 men with coronary artery disease were studied. Nicardipine was administered as a 2 mg bolus followed by an infusion, titrated to maintain a 10 to 20 mm Hg decrease in systolic arterial pressure. At rest, nicardipine significantly decreased systemic and coronary vascular resistances and left ventricular end-diastolic pressure but increased coronary blood flow, heart rate, and myocardial oxygen consumption. With bicycle exercise performed to evoke myocardial ischemia, nicardipine prolonged exercise duration, time to of 1 mm ST segment depression, and increased cardiac work to onset of angina in most patients. These changes in cardiac performance were not associated with alteration in the product of systolic pressure and heart rate or with increased left ventricular end-diastolic pressure. During increased heart rate induced by atrial pacing to cause ischemia, the heart rate threshold for myocardial ischemia was not changed by nicardipine. This occurred despite decreased myocardial oxygen consumption, unchanged coronary blood flow, and otherwise similar hemodynamic changes as those observed during exercise. However, left ventricular end-diastolic pressure remained lower and stroke volume increased more after nicardipine with pacing stress when compared with observations before nicardipine with the same heart rate stress. These findings support beneficial antiischemic actions of nicardipine with possible prevention of ischemia-related left ventricular dysfunction.
C R Lambert; C J Pepine
Related Documents :
3568284 - Mechanism of attenuated pressure-flow autoregulation in right coronary circulation of d...
1031974 - Transmural gradients in myocardial gas tensions in regionally ischemic canine left vent...
24570714 - Acute coronary syndrome in a 100-year-old woman treated successfully with primary percu...
15179104 - Impact of a correct breathing stereotype on pulmonary minute ventilation, blood gases a...
19683994 - Reconstruction of the architecture of ventricular myocardial fibers in ex vivo human he...
25020354 - P628relationship between endothelin-1, intercellular adhesion molecules-1 and lipoprote...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  American heart journal     Volume:  119     ISSN:  0002-8703     ISO Abbreviation:  Am. Heart J.     Publication Date:  1990 Feb 
Date Detail:
Created Date:  1990-03-13     Completed Date:  1990-03-13     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0370465     Medline TA:  Am Heart J     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  457-62     Citation Subset:  AIM; IM    
Department of Cardiology, Gainesville Administration Medical Center, FL 32602.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Angina Pectoris / etiology,  prevention & control*
Cardiac Pacing, Artificial
Coronary Disease / complications,  drug therapy*,  physiopathology
Hemodynamics / drug effects*
Middle Aged
Nicardipine / therapeutic use*
Time Factors
Reg. No./Substance:

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

Previous Document:  Nicardipine versus placebo for the treatment of postoperative hypertension.
Next Document:  Nicardipine and propranolol in the treatment of hypertension: similar antihypertensive but dissimila...