title: Incidence and mortality of acute myocardial infarction. A population-based study including patients with out-of-hospital cardiac arrest.
abstract: The in-hospital mortality rate of acute myocardial infarction (AMI) is improving. In Japan, little information exists concerning the incidence and mortality of AMI. Therefore, our population-based analysis examined the incidence and mortality rate in AMI cases in individuals that lived in the Matsumoto region in 2002. We studied 169 AMI patients who were admitted within 14 days after a non-out-of-hospital cardiac arrest (non-OHCA group) and 63 patients with an AMI-related out-of-hospital cardiac arrest (OHCA group). The in-hospital mortality rate of the non-OHCA group was 9.5% (reperfusion therapy [+] 3.4%, [-] 22.7%, P < 0.0001). The rate of return of spontaneous circulation and the survival rate were 21% and 1.6%, respectively, in the OHCA group. The incidence of AMI in the non-OHCA and OHCA groups combined was 55.2 to 63.1 events/100,000 people annually and the mean age of AMI patients was 70 ± 13 years. The population-based mortality rate of AMI was 34% to 42%. The mortality rate of AMI remains high, and most deaths occur outside of the hospital. Prehospital care may lower the mortality rate of AMI.
authors.affiliation: Department of Cardiovascular Medicine, Shinshu University School of Medicine, Asahi 3-1-1, Matsumoto, Nagano, Japan.
authors.forename: Shin-ichi
authors.initials: S
authors.lastname: Aso
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Imamura
authors.forename: Yukio
authors.initials: Y
authors.lastname: Sekiguchi
authors.forename: Tomomi
authors.initials: T
authors.lastname: Iwashita
authors.forename: Ryosuke
authors.initials: R
authors.lastname: Hirano
authors.forename: Uichi
authors.initials: U
authors.lastname: Ikeda
authors.forename: Kazufumi
authors.initials: K
authors.lastname: Okamoto
mesh_terms: D000368:Aged; D005260:Female; D017052:Hospital Mortality / Q000639:trends; D006801:Humans; D015994:Incidence; D007564:Japan / Q000453:epidemiology; D008297:Male; D009203:Myocardial Infarction / Q000150:complications / Q000453:epidemiology*; D058687:Out-of-Hospital Cardiac Arrest / Q000453:epidemiology* / Q000209:etiology; D011159:Population Surveillance; D012189:Retrospective Studies; D015996:Survival Rate / Q000639:trends