Document Detail


Assessment of early left ventricular remodeling in orthotopic heart transplant recipients with cine magnetic resonance imaging: potential mechanisms.
MedLine Citation:
PMID:  9171268     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We performed short axis cine magnetic resonance imaging studies in 11 patients 2 months after they underwent orthotopic heart transplantation (OHT), and in 10 control subjects, to measure left ventricular (LV) volumes, mass, and end-systolic wall stress to assess ventricular remodeling after OHT. Although there were no significant differences in ventricular volumes and ejection fractions between heart transplant recipients and control subjects, heart transplant recipients had significantly higher LV mass (198 +/- 61 vs 132 +/- 27 gm, p = 0.001). As a consequence of myocardial hypertrophy, end-systolic wall stress was significantly reduced in heart transplant recipients compared with control subjects (34 +/- 16 vs 57 +/- 10 kdyne/cm2, p = 0.001). Moreover, heart transplant recipients had significantly reduced end-systolic wall stress/volume ratio when compared with control subjects (0.89 +/- 0.3 vs 1.26 +/- 0.3 kdyne/cm2/ml, p < 0.01), indicating an already reduced LV contractility 2 months after heart transplantation. Univariate regression analysis revealed a significant correlation between LV mass and averaged cyclosporine levels, but no correlation between LV mass and blood pressure, cold ischemic time, acute rejection, age, body mass, blood pressure, plasma catecholamine levels, or plasma renin activity. Magnetic resonance imaging demonstrates early LV remodeling after OHT with reduced myocardial contractility. Cyclosporine may be contributing to these changes.
Authors:
S Globits; T De Marco; J Schwitter; H Sakuma; M O'Sullivan; C Rifkin; F Keith; K Chatterjee; W W Parmley; C B Higgins
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of heart and lung transplantation : the official publication of the International Society for Heart Transplantation     Volume:  16     ISSN:  1053-2498     ISO Abbreviation:  J. Heart Lung Transplant.     Publication Date:  1997 May 
Date Detail:
Created Date:  1997-07-17     Completed Date:  1997-07-17     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9102703     Medline TA:  J Heart Lung Transplant     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  504-10     Citation Subset:  IM    
Affiliation:
Department of Radiology, University of California, San Francisco, USA.
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Case-Control Studies
Cyclosporins / adverse effects
Female
Heart Transplantation / adverse effects*
Humans
Hypertrophy, Left Ventricular / diagnosis*,  etiology*,  physiopathology
Immunosuppressive Agents / adverse effects
Magnetic Resonance Imaging, Cine*
Male
Middle Aged
Myocardial Contraction
Regression Analysis
Stroke Volume
Time Factors
Chemical
Reg. No./Substance:
0/Cyclosporins; 0/Immunosuppressive Agents

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


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