COMPARATIVE STUDY
JOURNAL ARTICLE

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

K Kawahito, H Adachi, A Yamaguchi, T Ino
Annals of Thoracic Surgery 2000, 70 (5): 1455-9
11093469

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.

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