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[Risk factors related to mortality in old patients with coronary heart disease after revascularization].

OBJECTIVE
To evaluate the risk factors related to mortality in old patients with coronary heart disease after revascularization.


METHODS
A total of 675 patients (498 males) with age >or= 70 years old who received revascularization during July 2003 to June 2004 and followed up > 30 days after discharge were included in this study. Clinical characteristics, death and major adverse cardiac and cerebral events (MACCE) during follow up were recorded.


RESULTS
The patients were followed up for a mean period of (754 +/- 355) days. 27 patients (4.0%) died and MACCE developed in 50 patients (7.4%) during follow up. Female and patients with anemia took a significantly higher risk of mortality (RR = 2.750, 95% CI 1.116 - 6.779, P = 0.028, RR = 0.385 95% CI 0.164 - 0.904, P = 0.028, respectively); Creatinine level is positively related to mortality rate. When comparing patients with Cr > 115 micromol/L and Cr > 177 micromol/L with patients with Cr < 115 micromol/L, the hazard rate was 2.963 and 10.785, respectively (95% CI 1.114 - 9.952, P = 0.035 and 95% CI 2.659 - 78.097, P = 0.000) after adjustment for other risk factors.


CONCLUSION
Preexisting anaemia (male Hb < 120 g/L, female Hb < 110 g/L), renal insufficiency (Cr > 115 micromol/L) and female gender were found to be independent risk factors for mortality in old patients with coronary heart disease post revascularization.