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It has long been established that advanced age is not only associated with greater myocardial infarction frequency but also greater mortality and morbidity. The treatment of acute myocardial infarction (AMI) in 80 year old patients remains problematic with conflicting results; in these patients, the risks of conservative treatment are high and the risks and benefits of thrombolytic therapy are still controversial. The purpose of this study was to evaluate whether primary angioplasty can offer an important alternative method to improve short- and long-term outcomes in octogenarian or older patients who experience AMI. Between May 1986 and March 2000, 171 consecutive 80 year old patients hospitalized for AMI were not randomized to be registered and divided into a medical therapy group (group 1: an historical control group, n=11) and a primary angioplasty group (group 2, n=60). In-hospital mortality was markedly increased with advanced Killip scores (Killip 3 or 4) in both groups. Twenty-four hours after admission, group 1 patients had a significantly higher incidence of progression to higher Killip scores than did group 2 patients (P=0.006). The 30-day overall mortality of group 2 patients was significantly lower than in group 1 patients (30.0% vs 54.1%, P=0.003). Patients without cardiogenic shock treated by primary angioplasty had a significantly lower incidence of overall mortality at 30 days than patients without cardiogenic shock treated conservatively [3.1% vs 24.3%, P=0.016 (Killip 1 and 2); 18.2% vs 52.6%, P=0.044 (Killip 3)]. However, the mortality rate of cardiogenic shock was extremely high and did not differ significantly between groups I and 2 (86.1% vs 88.2%, P=0.99). The 3-year cumulative survival rate was significantly higher in group 2 than in group 1 patients (P=0.0009). In conclusion, primary angioplasty is feasible and effective, and can improve short-and long-term mortalities in octogenarian or older patients with AMI but without cardiogenic shock.

japanese heart journal

Comparison of Primary Angioplasty and Conservative Treatment on Short- and Long-term Outcome in Octogenarian or Older Patients with Acute Myocardial Infarction.