Document Detail


Impact of heart transplantation on the safety and feasibility of the dobutamine stress test.
MedLine Citation:
PMID:  11295577     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: Dobutamine myocardial perfusion imaging is a useful method for evaluation of coronary artery disease. However, this technique does not allow for ischemia monitoring, which may have an impact on the safety of the test in heart transplant recipients due to cardiac sensory denervation. The aim of this study was to assess the impact of heart transplantation on the feasibility and complications of the dobutamine stress test. METHODS: We studied 225 heart transplant recipients (mean age 57 +/- 7 years) and a control group of 225 patients without previous transplant matched for age and gender by dobutamine (up to 40 microg/kg per minute) stress myocardial perfusion imaging. RESULTS: During the test, transplant recipients had a lower prevalence of premature ventricular contractions (23% vs. 37%, p < 0.001) and ventricular tachycardia (0.04% vs 7.5%, p < 0.0001) compared with control patients. By multivariate analysis, heart transplantation was a powerful independent variable associated with a reduced risk of ventricular arrhythmias (chi(2) = 20.8, p < 0.0001) and minor side effects (nausea, dizziness, anxiety, flushing, chills) (chi(2) = 20, p < 0.0001) during dobutamine stress. The target heart rate was reached in 82% of transplant recipients and in 77% of the control group. Overall feasibility (achievement of the target heart rate and/or an ischemic end-point) was 87% in the transplant and 86% in the control group. CONCLUSIONS: Dobutamine stress myocardial perfusion imaging is a safe and feasible method for evaluation of coronary artery disease in heart transplant recipients. The prevalence of arrhythmias and minor complications using the dobutamine stress test is lower in heart transplant recipients compared with control patients. The independent association between heart transplantation and reduced risk of arrhythmias and minor side effects of the dobutamine stress test indicates that cardiac sensory and autonomic nerve function plays a major role in the induction of these complications during the test.
Authors:
A Elhendy; R T van Domburg; P Vantrimpont; F B Sozzi; J J Bax; D Poldermans; J R Roelandt; L P Maat; A H Balk
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of heart and lung transplantation : the official publication of the International Society for Heart Transplantation     Volume:  20     ISSN:  1053-2498     ISO Abbreviation:  J. Heart Lung Transplant.     Publication Date:  2001 Apr 
Date Detail:
Created Date:  2001-04-11     Completed Date:  2001-07-05     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  9102703     Medline TA:  J Heart Lung Transplant     Country:  United States    
Other Details:
Languages:  eng     Pagination:  399-406     Citation Subset:  IM    
Affiliation:
Department of Cardiovascular Disease and Internal Medicine, Mayo Clinic, Rochester, Minnesota, USA. elhendy.abdou@mayo.edu
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MeSH Terms
Descriptor/Qualifier:
Cardiotonic Agents / diagnostic use*
Chi-Square Distribution
Coronary Disease / etiology,  physiopathology,  radionuclide imaging*
Dobutamine / diagnostic use*
Electrocardiography
Exercise Test / adverse effects*
Female
Heart Transplantation* / physiology,  ultrasonography
Humans
Logistic Models
Male
Middle Aged
Multivariate Analysis
Myocardial Ischemia / etiology
Postoperative Complications / physiopathology,  radionuclide imaging*
Predictive Value of Tests
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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