edoc

Relation of dyspnea in patients unable to perform exercise stress testing to outcome and myocardial ischemia

Bernheim, Alain M. and Kittipovanonth, Maytinee and Scott, Christopher G. and McCully, Robert B. and Tsang, Teresa S. and Pellikka, Patricia A.. (2009) Relation of dyspnea in patients unable to perform exercise stress testing to outcome and myocardial ischemia. The American journal of cardiology : official journal of the American College of Cardiology, Vol. 104. pp. 265-269.

Full text not available from this repository.

Official URL: http://edoc.unibas.ch/dok/A6006236

Downloads: Statistics Overview

Abstract

Limited information exists regarding the significance of dyspnea in patients who are unable to exercise and the contribution of myocardial ischemia to this symptom. To assess this, we evaluated results of dobutamine stress echocardiography (DSE) and long-term outcome of patients with dyspnea referred for DSE. We studied 6,376 consecutive patients who were unable to perform an exercise test and were referred for DSE. Patients were classified according to presenting symptoms and followed for 5.5 +/- 2.8 years. End points were cardiac ischemic events (myocardial infarction or revascularization), hospitalization for heart failure (HF), and death. Dobutamine stress echocardiogram was positive for ischemia in 19% of patients with dyspnea versus 24% (p = 0.002) of those with typical angina and 17% (p = 0.2) of asymptomatic patients. In multivariate analysis, risk of death was increased in dyspneic patients versus asymptomatic patients (hazard ratio [HR] 1.14, p = 0.02) and patients with chest pain (HR 1.20, p >0.001). Hospitalization for HF occurred more often in patients with dyspnea (HR 1.26, p = 0.05 vs asymptomatic; HR 1.24, p = 0.06 vs chest pain), especially in the subset without previous HF (HR 1.45, p = 0.006 vs chest pain). Risk of cardiac ischemic events in patients with dyspnea was similar versus asymptomatic patients (HR 0.92, p = 0.39) and decreased versus patients with chest pain (HR 0.70, p >0.001). In conclusion, in patients referred for DSE, dyspnea was associated with a poor outcome. This increased hazard seems not to be linked to myocardial ischemia, but instead to HF and death.
Faculties and Departments:03 Faculty of Medicine > Bereich Medizinische Fächer (Klinik) > Allgemeine innere Medizin USB > Ambulante innere Medizin (Hess C)
03 Faculty of Medicine > Departement Klinische Forschung > Bereich Medizinische Fächer (Klinik) > Allgemeine innere Medizin USB > Ambulante innere Medizin (Hess C)
UniBasel Contributors:Bernheim, Alan M.
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Elsevier Science
ISSN:0002-9149
Note:Publication type according to Uni Basel Research Database: Journal article
Related URLs:
Identification Number:
Last Modified:04 Jan 2013 08:38
Deposited On:04 Jan 2013 08:36

Repository Staff Only: item control page