Document Detail


Right ventricular infarction.
MedLine Citation:
PMID:  2189611     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Right ventricular infarction commonly occurs in association with acute inferior left ventricular infarction, but is uncommon when infarction involves other areas of the left ventricle. Evidence of right ventricular infarction often can be detected by physical examination, electrocardiography, echocardiography, or radionuclide ventriculography. However, hemodynamically significant infarction (i.e., hypotension or shock) is much less frequent, occurring in approximately 10% of patients with other evidence of right ventricular infarction. Right ventricular infarction increases ventricular stiffness, thereby impeding diastolic filling. This results in hemodynamic changes similar to those found in constrictive pericarditis: elevated systemic venous pressure, a Y descent greater than the X descent, and an inspiratory increase in venous pressure. The increase in venous pressure generally equals or even exceeds left atrial pressure. When hypotension or shock occurs, expansion of vascular volume is generally employed as initial therapy. In nonresponders, dobutamine or similar inotropic agents may be helpful. The prognosis during the acute phases is guarded, but, in survivors, prognosis is favorable and generally related to the extent of left ventricular involvement.
Authors:
J F Williams
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.; Review    
Journal Detail:
Title:  Clinical cardiology     Volume:  13     ISSN:  0160-9289     ISO Abbreviation:  Clin Cardiol     Publication Date:  1990 May 
Date Detail:
Created Date:  1990-07-11     Completed Date:  1990-07-11     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  7903272     Medline TA:  Clin Cardiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  309-15     Citation Subset:  IM    
Affiliation:
Krannert Institute of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis 46202.
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MeSH Terms
Descriptor/Qualifier:
Cardiotonic Agents / therapeutic use
Dobutamine / therapeutic use
Heart Ventricles / physiopathology
Hemodynamics
Humans
Myocardial Infarction / diagnosis*,  drug therapy,  physiopathology
Prognosis
Grant Support
ID/Acronym/Agency:
HL-06308/HL/NHLBI NIH HHS; HL-07182/HL/NHLBI NIH HHS
Chemical
Reg. No./Substance:
0/Cardiotonic Agents; 34368-04-2/Dobutamine

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


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