title: One-year clinical outcomes in invasive treatment strategies for acute ST-elevation myocardial infarction complicated by cardiogenic shock in elderly patients.
abstract: OBJECTIVE
  To investigate the clinical outcomes of an invasive strategy for elderly (aged ≥ 75 years) patients with acute ST-segment elevation myocardial infarction (STEMI) complicated by cardiogenic shock (CS).
  
  
  METHODS
  Data on 366 of 409 elderly CS patients from a total of 6,132 acute STEMI cases enrolled in the Korea Acute Myocardial Infarction Registry between January 2008 and June 2011, were collected and analyzed. In-hospital deaths and the 1-month and 1-year survival rates free from major adverse cardiac events (MACE; defined as all cause death, myocardial infarction, and target vessel revascularization) were reported for the patients who had undergone invasive (n = 310) and conservative (n = 56) treatment strategies.
  
  
  RESULTS
  The baseline clinical characteristics were not significantly different between the two groups. There were fewer in-hospital deaths in the invasive treatment strategy group (23.5% vs. 46.4%, P < 0.001). In addition, the 1-year MACE-free survival rate after invasive treatment was significantly lower compared with the conservative treatment (51% vs. 66%, P = 0.001).
  
  
  CONCLUSIONS
  In elderly patients with acute STEMI complicated by CS, the outcomes of invasive strategy are similar to those in younger patients at the 1-year follow-up.
authors.affiliation: Division of Cardiology, Hyosung General Hospital, 162-90 Sandang dong, Chungju 360-802, South Korea.
authors.forename: Yeon Pyo
authors.initials: YP
authors.lastname: Yoo
authors.forename: Ki-Woon
authors.initials: KW
authors.lastname: Kang
authors.forename: Hyeon Soo
authors.initials: HS
authors.lastname: Yoon
authors.forename: Jin Cheol
authors.initials: JC
authors.lastname: Myung
authors.forename: Yu Jeong
authors.initials: YJ
authors.lastname: Choi
authors.forename: Won Ho
authors.initials: WH
authors.lastname: Kim
authors.forename: Sang Hyun
authors.initials: SH
authors.lastname: Park
authors.forename: Kyung Tae
authors.initials: KT
authors.lastname: Jung
authors.forename: Myung Ho
authors.initials: MH
authors.lastname: Jeong
keywords: Acute myocardial infarction; Cardiogenic shock; Elderly patients