Document Detail


Reversible diastolic dysfunction after successful coronary artery bypass surgery. Assessment by transesophageal Doppler echocardiography.
MedLine Citation:
PMID:  7956385     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
To assess the potential effects of coronary artery bypass surgery on left ventricular diastolic filling, 12 patients, aged 65 +/- 11 years, were studied by serial transesophageal Doppler echocardiograms. Doppler measures of mitral inflow velocity were made before, immediately after, 4 h after, and 20 h after cardiopulmonary bypass (CPB). Left atrial pressure was directly measured and controlled at 10 +/- 2 mm Hg for each study period. Mitral maximal early inflow velocity (E)/maximal atrial velocity (A) ratios and atrial filling fractions were calculated as indexes of diastolic function from maximal E and A velocities and their time velocity integrals, respectively. Data sets were available for serial comparison in 11 patients and were also compared with an age-matched control group of normal values. The results of E/A ratios were as follows: control group--1.4 +/- 0.2; before CPB--1.7 +/- 0.6; immediately after CPB--1.0 +/- 0.2 (p < 0.05 vs control group, before CPB, and 20 h after CPB values); 4 h after CPB--0.8 +/- 0.2 (p < 0.05 vs control group, before CPB, and 20 h after CPB values); and 20 h after CPB--1.3 +/- 0.4. Atrial filling fractions were as follows: control group--0.29 +/- 0.05; before CPB--0.25 +/- 0.06; immediately after CPB--0.43 +/- 0.07 (p < 0.05 vs control group, before CPB, and 20 h after CPB values); 4 h after CPB, 0.46 +/- 0.07 (p < 0.05 vs control group, before CPB, and 20 h after CPB values); and 20 h after CPB--0.35 +/- 0.06. Alterations in Doppler indexes of left ventricular filling occurred immediately after CPB and persisted 4 h after CPB. These indexes returned to baseline values by 20 h after CPB. This suggests reversible diastolic dysfunction in patients after coronary artery bypass surgery.
Authors:
J Gorcsan; P Diana; J Lee; W E Katz; B G Hattler
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Chest     Volume:  106     ISSN:  0012-3692     ISO Abbreviation:  Chest     Publication Date:  1994 Nov 
Date Detail:
Created Date:  1994-12-09     Completed Date:  1994-12-09     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0231335     Medline TA:  Chest     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1364-9     Citation Subset:  AIM; IM    
Affiliation:
Division of Cardiology, University of Pittsburgh Medical Center 15261.
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Aged, 80 and over
Coronary Artery Bypass*
Diastole
Echocardiography, Transesophageal* / instrumentation,  methods,  statistics & numerical data
Female
Hemodynamics
Humans
Male
Middle Aged
Postoperative Complications / physiopathology,  ultrasonography*
Posture / physiology
Surgical Procedures, Elective
Time Factors
Ventricular Dysfunction, Left / physiopathology,  ultrasonography*

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


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