Temporal Trends in Hospitalization for Acute Myocardial Infarction Between 2004 and 2011 in Kumamoto, Japan

Abstract

Background: The Kumamoto Acute Coronary Events Study explored trends for acute myocardial infarction (AMI). Methods and Results: The number of people of advanced age in Kumamoto Prefecture has gradually increased. In 2004–2011, 8,131 AMI patients were registered. Although the age-adjusted AMI incidence in men decreased from 93.1 in 2004 to 70.7 in 2011 (P=0.0294), the age-adjusted in-hospital cardiac death rate was maintained at ∼7%; however, the all-cause mortality and noncardiac death rate increased and appeared to be related. Conclusions: A steady trend of decreasing AMI incidence was observed. Urgent measures should be established against non-cardiac mortality in this era of an aging population.