Early and late surgical outcomes of acute type a aortic dissection in patients aged 75 years and older

Background. With the general increase in human lifespan, aortic surgeons are faced with an increasing prevalence of acute type A aortic dissection in the elderly. In this study, we reviewed early and late surgical outcomes of acute type A dissection (operation within 48 hours after onset) in patients aged 75 years and older. Methods. Between 1990 and 1999, 109 patients underwent emergency operation for acute type A dissection at Omiya Medical Center. Twenty-three patients were aged 75 years and older (elderly group, mean age, 79.1 ± 4.7 years) and 86 were younger than 75 years old (younger group, mean age, 58.7 ± 10.8 years). Early and late outcomes of both groups were compared. Results. The hospital mortality rates were 13.0% (3 of 23) in the elderly group and 10.5% (9 of 86) in the younger group (p = 0.71). In the elderly, actuarial survival rate (including the operative mortality rate) at 1, 3, and 5 years was 78% ± 9% for each point. In the younger group, the rates were 88% ± 4% at 1 year, 83% ± 4% at 3 years, and 81% ± 5% at 5 years (p = 0.57). Actuarial event-free rates were 84% ± 8% at 1 year, 77% ± 11% at 3 years, and 77% ± 11% at 5 years in the elderly group. In the younger group, the rates were 96% ± 2% at 1 year, 88% ± 4% at 3 years, and 81% ± 7% at 5 years (p = 0.27). Conclusions. No significant differences in the hospital mortality, actuarial survival, or event-free rates were observed between the two groups. Operation for type A acute aortic dissection in patients aged 75 years or older can be performed with acceptable risk of death, and long-term results are satisfactory.