0251: Prognostic value of exercise-induced left ventricular systolic dysfunction in hypertensive Algerian patients without coronary artery disease - 12/02/16
Résumé |
Introduction and objectives |
We sought to assess the prognostic value of exercise-induced left ventricular systolic dysfunction in hypertensive Algerian patients with normal resting echocardiography and absence of coronary artery disease.
Methods |
From our database of patients (military hospitals of Algeria) referred for treadmill exercise echocardiography, we identified 91 hypertensive patients with preserved resting left ventricular ejection fraction (>50%), no evidence of structural heart disease, and absence of coronary artery disease on angiography. Overall, 38 patients developed exercise-induced left ventricular systolic dysfunction (defined as a decrease in left ventricular ejection fraction below 50% at peak exercise) and 53 exhibited a normal left ventricular ejection fraction response to exercise. The mean follow-up was 6.1 (3.7) years. End points were all-cause mortality, cardiac death, heart failure, and the composite event of cardiac death or heart failure.
Results |
Patients who developed exercise-induced left ventricular systolic dysfunction were at higher risk of death from any cause (hazard ratio=3.4; 95% confidence interval, 1.1-10.3), cardiac death (hazard ratio=5.6; 95% CI, 1.1-29.4), heart failure (hazard ratio=8.9; 95% confidence interval, 1.8-44.2), and the composite end point (hazard ratio=5.7; 95% confidence interval, 1.7-19.0). In the multivariate analysis, exercise-induced left ventricular systolic dysfunction remained an independent predictor of both heart failure (hazard ratio=6.9; 95% CI, 1.3-37.4) and the composite event of cardiac death or heart failure (hazard ratio=4.5; 95% confidence interval, 1.2-16.0).
Conclusions |
In hypertensive Algerian patients patients with preserved resting left ventricular ejection fraction and absence of coronary artery disease, exercise-induced left ventricular systolic dysfunction is a strong predictor of cardiac events and may represent early hypertensive heart disease.
Le texte complet de cet article est disponible en PDF.Vol 8 - N° 1
P. 80 - janvier 2016 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
L’accès au texte intégral de cet article nécessite un abonnement.
Déjà abonné à cette revue ?