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. 2010;140(9-10):133-8.
doi: 10.4414/smw.2010.12955.

Reduced incidence of acute myocardial infarction in the first year after implementation of a public smoking ban in Graubuenden, Switzerland

L D Trachsel  1 , M U Kuhn, W H Reinhart, T Schulzki, P O Bonetti
Affiliations
Free article

Reduced incidence of acute myocardial infarction in the first year after implementation of a public smoking ban in Graubuenden, Switzerland

L D Trachsel et al. Swiss Med Wkly. 2010.
Free article

Abstract

Objective: On March 1st, 2008 a smoking ban in public buildings became effective in the Canton of Graubuenden, Switzerland. The aim of our study was to investigate, whether implementation of this new regulation was followed by a decrease in the incidence of acute myocardial infarction (AMI).

Patients and methods: The Kantonsspital Graubuenden serves as a tertiary care hospital, possessing the only cardiac catheterization laboratory in the Canton of Graubuenden. Based on an excellent functioning network including all hospitals in the Canton of Graubuenden, virtually all patients experiencing an AMI in the Canton of Graubuenden are transferred to our hospital for either acute or early coronary angiography. Data of all patients with AMI undergoing coronary angiography at our hospital between March 1st, 2008 and February 28th, 2009 were collected prospectively. The data were then compared with those of the two corresponding 12-month periods preceding implementation of the public smoking ban.

Results: In the two years before adoption of smoke-free legislation, the number of patients with AMI was 229 and 242, respectively (p = ns). In the 12 months after implementation of the public smoking ban, the number of AMI patients dropped to 183 (p <0.05 vs. each of the previous 12-month periods), representing an overall 22% reduction in the AMI incidence within the first year after enactment of the new regulation. This reduction was driven by a significant decrease in the AMI incidence in men, nonsmokers, and individuals with established coronary artery disease, including those with prior AMI or prior percutaneous coronary intervention.

Conclusions: Similar to other countries in Europe and various regions of the USA and Canada, implementation of a public smoking ban was followed by a significant early decline in the incidence of AMI in the Canton of Graubuenden, Switzerland.

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