Document Detail


Early revascularization and long-term survival in cardiogenic shock complicating acute myocardial infarction.
MedLine Citation:
PMID:  16757723     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
CONTEXT: Cardiogenic shock remains the major cause of death for patients hospitalized with acute myocardial infarction (MI). Although survival in patients with cardiogenic shock complicating acute MI has been shown to be significantly higher at 1 year in those receiving early revascularization vs initial medical stabilization, data demonstrating long-term survival are lacking.
OBJECTIVE: To determine if early revascularization affects long-term survival of patients with cardiogenic shock complicating acute MI.
DESIGN, SETTING, AND PATIENTS: The Should We Emergently Revascularize Occluded Coronaries for Cardiogenic Shock (SHOCK) trial, an international randomized clinical trial enrolling 302 patients from April 1993 through November 1998 with acute myocardial infarction complicated by cardiogenic shock (mean [SD] age at randomization, 66 [11] years); long-term follow-up of vital status, conducted annually until 2005, ranged from 1 to 11 years (median for survivors, 6 years).
MAIN OUTCOME MEASURES: All-cause mortality during long-term follow-up.
RESULTS: The group difference in survival of 13 absolute percentage points at 1 year favoring those assigned to early revascularization remained stable at 3 and 6 years (13.1% and 13.2%, respectively; hazard ratio [HR], 0.74; 95% confidence interval [CI], 0.57-0.97; log-rank P = .03). At 6 years, overall survival rates were 32.8% and 19.6% in the early revascularization and initial medical stabilization groups, respectively. Among the 143 hospital survivors, a group difference in survival also was observed (HR, 0.59; 95% CI, 0.36-0.95; P = .03). The 6-year survival rates for the hospital survivors were 62.4% vs 44.4% for the early revascularization and initial medical stabilization groups, respectively, with annualized death rates of 8.3% vs 14.3% and, for the 1-year survivors, 8.0% vs 10.7%. There was no significant interaction between any subgroup and treatment effect.
CONCLUSIONS: In this randomized trial, almost two thirds of hospital survivors with cardiogenic shock who were treated with early revascularization were alive 6 years later. A strategy of early revascularization resulted in a 13.2% absolute and a 67% relative improvement in 6-year survival compared with initial medical stabilization. Early revascularization should be used for patients with acute MI complicated by cardiogenic shock due to left ventricular failure.
TRIAL REGISTRATION: clinicaltrials.gov Identifier: NCT00000552.
Authors:
Judith S Hochman; Lynn A Sleeper; John G Webb; Vladimir Dzavik; Christopher E Buller; Philip Aylward; Jacques Col; Harvey D White;
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Publication Detail:
Type:  Journal Article; Multicenter Study; Randomized Controlled Trial; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  JAMA : the journal of the American Medical Association     Volume:  295     ISSN:  1538-3598     ISO Abbreviation:  JAMA     Publication Date:  2006 Jun 
Date Detail:
Created Date:  2006-06-07     Completed Date:  2006-06-12     Revised Date:  2011-05-05    
Medline Journal Info:
Nlm Unique ID:  7501160     Medline TA:  JAMA     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2511-5     Citation Subset:  AIM; IM    
Affiliation:
Cardiovascular Clinical Research Center, New York University School of Medicine, New York 10016, USA. judith.hochman@med.nyu.edu
Data Bank Information
Bank Name/Acc. No.:
ClinicalTrials.gov/NCT00000552
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MeSH Terms
Descriptor/Qualifier:
Aged
Angioplasty, Balloon, Coronary
Coronary Artery Bypass
Female
Follow-Up Studies
Humans
Male
Middle Aged
Myocardial Infarction
Myocardial Revascularization*
Shock, Cardiogenic / mortality,  therapy*
Survival Analysis
Survivors
Thrombolytic Therapy
Grant Support
ID/Acronym/Agency:
R01 HL050020-05/HL/NHLBI NIH HHS; R01 HL50020/HL/NHLBI NIH HHS; R01-HL49970/HL/NHLBI NIH HHS
Comments/Corrections
Comment In:
ACP J Club. 2006 Nov-Dec;145(3):59   [PMID:  17080971 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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