Impact of smoking status on long-term mortality in patients with acute myocardial infarction

Kunihiro Kinjo, Hiroshi Sato, Yasuhiko Sakata, Daisaku Nakatani, Hiroya Mizuno, Masahiko Shimizu, Tatsuya Sasaki, Yoshiyuki Kijima, Masami Nishino, Masaaki Uematsu, Jun Tanouchi, Shinsuke Nanto, Kinya Otsu, Masatsugu Hori

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)

Abstract

Background: Cessation of smoking after a cardiovascular event has been shown in Western countries to have a beneficial effect on clinical events during long-term follow-up. However, knowledge of the effect of smoking status after acute myocardial infarction (AMI) on the long-term mortality based on a large-scale sample is still limited in Japan. Methods and Results: In the present study 2,579 AMI patients were enrolled in the Osaka Acute Coronary Insufficiency Study (OACIS) between April 1998 and March 2003. Smoking status was assessed at baseline and 3 months after hospital discharge by mailed questionnaire. Patients were divided into nonsmokers (n=823), former smokers (those who had stopped smoking before AMI onset, n=332), quitters (those who stopped smoking after AMI onset, n=1,056), and persistent smokers (those who smoked before and after AMI, n=368). Quitters had lower long-term mortality rates than persistent smokers (3.0% vs 5.2%; log rank, p=0.032). Multivariate Cox regression analysis revealed that smoking cessation was independently associated with a reduction in risk of long-term mortality (hazard ratio, 0.39; 95% confidence interval, 0.20-0.77). Conclusions: Patients who continue to smoke after AMI are at greater risk for death than patients who quit smoking. Cessation of smoking benefits the long-term prognosis in patients with AMI.

Original languageEnglish
Pages (from-to)7-12
Number of pages6
JournalCirculation Journal
Volume69
Issue number1
DOIs
Publication statusPublished - 2005 Jan

Keywords

  • Mortality
  • Myocardial infarction
  • Quitting
  • Smoking

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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