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Title: Predictive factors of recurrent angina after acute coronary syndrome: the global registry acute coronary events from China (Sino-GRACE).
Author: Zhao FH, Chen YD, Song XT, Pan WQ, Jin ZN, Yuan F, Li YB, Ren F, Lü SZ, Sino-GRACE investigators.
Journal: Chin Med J (Engl); 2008 Jan 05; 121(1):12-6. PubMed ID: 18208658.
Abstract:
BACKGROUND: Many patients with acute coronary syndrome (ACS) develop recurrent angina (RA) during hospitalization. The aim of this non-randomized, prospective study was to investigate the predictive factors of RA in unselected patients with ACS enrolled in the global registry acute coronary events (GRACE) during hospitalization in China. METHODS: Between March 2001 and October 2004, enrolled were 1433 patients with ACS, including ST segment elevation myocardial infarction (662, 46.2%), non-ST segment elevation myocardial infarction (239, 16.7%) and unstable angina (532, 37.1%). The demographic distribution, medical history and clinical data were collected to investigate the predictive factors of RA by Logistic regression. RESULTS: During hospitalization 275 (19.2%) patients were documented with RA including unstable angina (53.2%), non-ST segment elevation myocardial infarction (27.5%), ST segment elevation myocardial infarction (19.3%). A comorbidity of dyslipidemia, prior angina, percutaneous coronary intervention (PCI) within 6 months was more common in patients with RA, P < 0.05. In the patients with RA, a significantly higher proportion of patients with acute pulmonary edema was observed, 23 (8.4%) versus 43 (3.7%), P = 0.001. Acute renal failure was present in 8 (2.9%) of patients with RA versus 19 (1.6%) of patients without RA, P = 0.165. Hemorrhagic events were present in 6 (2.2%) of patients with RA versus 8 (0.7%) of patients without RA, ventricular tachycardia/ventricular fibrillation events in 12 patients (4.3%) versus 22 patients (1.9%), congestive heart failure in 69 patients (25.0%) versus 94 patients (8.1%), myocardial re-infarction in 28 patients (10.1%) versus 15 patients (1.3%), P < 0.05, respectively. A lower proportion of patients with RA underwent in-hospital PCI, 687 (59.3%) versus 114 (41.5%), P = 0.000. A higher proportion of patients with RA received heparin, 260 (94.5%) versus 1035 (89.4%), P = 0.006; and beta-blockers 176 (64.0%) versus 864 (74.5%), P = 0.000. Multivarible regression analysis showed that RA was associated with prior angina (OR 2.086, 95% CI 1.466 - 2.967), in-hospital PCI (OR 0.579, 95% CI 0.431 - 0.778), in-hospital congestive heart failure (OR 2.410, 95% CI 1.634 - 3.555), myocardial re-infarction (OR 7.695, 95% CI 3.701 - 15.999), beta-blocker (OR 0.626, 95% CI 0.458 - 0.855), and heparin (OR 3.411, 95% CI 1.604 - 7.382). CONCLUSIONS: In-hospital congestive heart failure, myocardial re-infarction, prior angina history and use of heparin are stronger independent predictors of RA; beta-blockers and PCI are also important predictive factors for RA.

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