Improving Risk Assessment with Cardiac Testing in Peripheral Arterial Disease
The American Journal of Medicine , Volume 120 - Issue 6 p. 531- 538
Purpose: The study's objective was to evaluate the prognostic value of left ventricular ejection fraction and stress-induced ischemia during dobutamine stress echocardiography, in addition to ankle-brachial index measurements and clinical risk factors in patients with suspected or known peripheral arterial disease. Methods: In 852 patients with suspected or known peripheral arterial disease (mean age 63 years, 70% male), the ankle-brachial index was measured, left ventricular ejection fraction was assessed, and all patients underwent additional stress testing. Endpoints were all-cause mortality and hard cardiac events (cardiac death or nonfatal myocardial infarction). Results: During a mean follow-up of 7.6 ± 4.4 years, death occurred in 288 patients (34%), and hard cardiac events occurred in 216 patients (25%). Mean left ventricular ejection fraction was 50% ± 17%, and stress-induced ischemia was observed in 352 patients (41%). In multivariate analysis with adjustment for clinical risk factors and ankle-brachial index, each 5% decrease in left ventricular ejection fraction was associated with increased all-cause mortality (hazard ratio [HR] 1.05, 95% confidence interval [CI], 1.02-1.09) and hard events (HR 1.14, 95% CI, 1.08-1.21). Stress-induced ischemia also independently predicted all-cause mortality (HR 2.01, 95% CI, 1.38-2.79) and hard events (HR 2.06, 95% CI, 1.39-3.08). Left ventricular ejection fraction and stress-induced ischemia provided incremental prognostic information over clinical data and ankle-brachial index values (P <.001). Conclusions: Left ventricular ejection fraction and stress-induced ischemia independently predict long-term outcome and improve prognostic risk assessment, in addition to ankle-brachial index and clinical risk factors in patients with suspected or known peripheral arterial disease.
|Ankle-brachial index, Coronary artery disease, Dobutamine stress echocardiography, Left ventricular dysfunction, Peripheral arterial disease, Prognosis|
|The American Journal of Medicine|
|Organisation||Erasmus MC: University Medical Center Rotterdam|
Feringa, H.H.H, Elhendy, A, Karagiannis, S.E, Noordzij, P.G, Dunkelgrun, M, Schouten, O, … Poldermans, D. (2007). Improving Risk Assessment with Cardiac Testing in Peripheral Arterial Disease. The American Journal of Medicine, 120(6), 531–538. doi:10.1016/j.amjmed.2006.06.041