• Takayoshi Yamaki, Kazuhiko Nakazato, Mikihiro Kijima, Yukio Maruyama, and Yasuchika Takeishi.
• Departments of Cardiology and Hematology,Fukushima Medical University,Fukushima,Japan.
• Disaster Med Public Health Prep. 2014 Jun 1; 8 (3): 212-9.

ObjectiveThe incidence of cardiovascular disease (CVD) reportedly increases following a huge disaster. On March 11, 2011, the Great East Japan Earthquake hit a large area of eastern Japan. In Fukushima prefecture, many people suffered from the consequences of the earthquake, the subsequent tsunami, and especially the Fukushima Daiichi Nuclear Power Plant accident. We assessed whether the incidence of acute myocardial infarction (AMI) increased after the earthquake.MethodsWe enrolled AMI patients admitted to 36 hospitals in Fukushima prefecture between March 11, 2009, and March 10, 2013 (n = 3068). We compared the incidence of AMI after the earthquake for more than 3 months and 1 year with that in the control years.ResultsThe incidence of Fukushima's annual AMI patients (per 100 000 persons) in 2011 was similar to that of previous years (n = 38.9 [2011] vs 37.2 [2009] and 38.5 [2010], P = .581). However, a significantly higher incidence of AMI was found in the Iwaki district after the disaster that corresponded to the 1-year period of observation (n = 38.7 [2011] vs 27.3 [2009] and 32.8 [2010], P = .045).ConclusionThe Great East Japan Earthquake affected the incidence of AMI only in limited areas of Fukushima prefecture.

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