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Title: Percutaneous coronary intervention in asians- are there differences in clinical outcome?
Authors: Koh, A.S 
Khin, L.W
Choi, L.M
Sim, L.L
Chua, T.S 
Koh, T.H 
Tan, J.W 
Chia, S
Keywords: acetylsalicylic acid
antithrombocytic agent
cause of death
controlled study
coronary artery disease
ethnic difference
follow up
heart death
heart infarction
heart muscle revascularization
major clinical study
outcome assessment
percutaneous coronary intervention
priority journal
prospective study
tertiary health care
Issue Date: 2011
Citation: Koh, A.S, Khin, L.W, Choi, L.M, Sim, L.L, Chua, T.S, Koh, T.H, Tan, J.W, Chia, S (2011). Percutaneous coronary intervention in asians- are there differences in clinical outcome?. BMC Cardiovascular Disorders 11 : 22. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: Background: Ethnic differences in clinical outcome after percutaneous coronary intervention (PCI) have been reported. Data within different Asian subpopulations is scarce. We aim to explore the differences in clinical profile and outcome between Chinese, Malay and Indian Asian patients who undergo PCI for coronary artery disease (CAD).Methods: A prospective registry of consecutive patients undergoing PCI from January 2002 to December 2007 at a tertiary care center was analyzed. Primary endpoint was major adverse cardiovascular events (MACE) of myocardial infarction (MI), repeat revascularization and all-cause death at six months.Results: 7889 patients underwent PCI; 7544 (96%) patients completed follow-up and were included in the analysis (79% males with mean age of 59 years ± 11). There were 5130 (68%) Chinese, 1056 (14%) Malays and 1001 (13.3%) Indian patients. The remaining 357 (4.7%) patients from other minority ethnic groups were excluded from the analysis. The primary end-point occurred in 684 (9.1%) patients at six months. Indians had the highest rates of six month MACE compared to Chinese and Malays (Indians 12% vs. Chinese 8.2% vs. Malays 10.7%; OR 1.55 95%CI 1.24-1.93, p < 0.001). This was contributed by increased rates of MI (Indians 1.9% vs. Chinese 0.9% vs. Malays 1.3%; OR 4.49 95%CI 1.91-10.56 p = 0.001), repeat revascularization (Indians 6.5% vs. Chinese 4.1% vs. Malays 5.1%; OR 1.64 95%CI 1.22-2.21 p = 0.0012) and death (Indians 11.4% vs. Chinese 7.6% vs. Malays 9.9%; OR 1.65 95%CI 1.23-2.20 p = 0.001) amongst Indian patients.Conclusion: These data indicate that ethnic variations in clinical outcome exist following PCI. In particular, Indian patients have higher six month event rates compared to Chinese and Malays. Future studies are warranted to elucidate the underlying mechanisms behind these variations. © 2011 Koh et al; licensee BioMed Central Ltd.
Source Title: BMC Cardiovascular Disorders
ISSN: 14712261
DOI: 10.1186/1471-2261-11-22
Rights: Attribution 4.0 International
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