Background: The prevalence and the outcomes of patients with chronic Chagas heart disease with obstructive coronary artery disease (CCHD-CAD) and chronic heart failure (CHF) with precordial chest pain are unsettled. Accordingly, the aim of this study was to determine the prevalence and clinical course of patients with CHF secondary to CCHD-CAD.
Methods: Patients with positive serology for Chagas disease and systolic CHF were included; those with precordial chest pain and at least two risk factors for CAD underwent coronary arteriogram.
Results: In total 262 patients were included in the investigation; 234 (89%) had CHF secondary to CCHD alone, and 28 (11%) with CHF secondary to CCHD-CAD, as observed at coronary arteriogram. The survival probability of patients with CHF secondary to CCHD alone at 12, 24, 36, 48 and 72 mo was 79%, 64%, 54%, 44% and 33%, respectively, whereas survival probability for patients with CHF secondary to CCHD-CAD at 12, 24, 36, 48 and 72 mo was 96%, 80%, 71%, 66% and 57%, respectively (p=0.04).
Conclusions: In patients with CCHD with CHF, the prevalence of CAD of 11% is not neglectable in those with precordial chest pain. The outcome for patients with precordial chest pain with CHF secondary to CCHD-CAD is better than that observed in patients with CHF secondary to CCHD alone.
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