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Ann Acad Med Singapore. 2010 Mar;39(3):168-72.

The impact of gender on the outcomes of invasive versus conservative management of patients with non-ST-segment elevation myocardial infarction.

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  • 1The Cardiac Department, National University Heart Centre and Yong Loo Lin School of Medicine, National University of Singapore, Singapore.

Abstract

INTRODUCTION:

Studies have suggested that women who present with non-ST-segment elevation myocardial infarction (NSTEMI) may differ in their clinical response to early invasive strategy compared to male patients. We examined the impact of gender difference in NSTEMI patients on outcomes following invasive versus conservative treatment.

MATERIALS AND METHODS:

Patients enrolled in our national myocardial infarction (MI) registry between January 2000 and September 2005 with diagnosis of NSTEMI were retrospectively analysed. The study endpoint was the occurrence of major adverse cardiac events (MACE) in the patients at 1 year.

RESULTS:

A total of 1353 patients (62.2% male) with NSTEMI were studied. The mean age of men was 62 +/- 14 versus 72 +/- 12 years in women in the cohort (P <0.001). The prevalence of hypertension and diabetes mellitus were significantly higher in women. Men were more likely to undergo revascularisation than women (OR, 2.97; 95% CI, 2.18-3.89, P <0.001). Among those who were revascularised, there was no gender difference in survival or recurrent MI rates during hospitalisation and at 1 year. Compared to medical therapy, percutaneous coronary intervention (PCI) was associated with a significant reduction in MACE in both women (OR, 0.44; 95% CI, 0.20-0.95) and men (OR, 0.40; 95% CI, 4.79-12.75). The most important predictor of MACE for females was diabetes mellitus (HR, 1.98; 95% CI, 1.17-3.33).

CONCLUSIONS:

There is a gender-based difference in the rate of revascularisation among patients with NSTEMI. Women benefit from an invasive approach as much as men, despite their advanced age, with similar rates of mortality and recurrent MI at 1-year follow-up.

PMID:
20372750
[PubMed - indexed for MEDLINE]
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