Abdominal aortic aneurysm and diastasis recti.

Midline abdominal incisional hernias are common following open repair of abdominal aortic aneurysms. These may be caused by the weakness of connective tissue. This study sought to determine the prevalence of diastasis recti among unoperated Caucasian males with abdominal aortic aneurysm compared to a control group with atherosclerotic lower extremity peripheral arterial disease. Forty-two consecutive white males referred for evaluation of abdominal aortic aneurysm (n = 18) or peripheral arterial disease (n = 24) were examined by a single examiner at the Mayo Clinic. Both groups were similar in terms of age and smoking history, 2 major risk factors for both abdominal aortic aneurysm and peripheral arterial disease. Abdominal aortic aneurysm patients ranged in age from 59 to 89 (mean, 73.2) years. Seventeen of 18 (94.4%) had a history of smoking. Peripheral arterial disease patients ranged in age from 52 to 93 (mean, 70.8) years. Twenty-one of 24 (87.5%) had a history of smoking. Diastasis recti were present in 12 of 18 (66.7%) subjects with abdominal aortic aneurysm versus 4 of 24 (16.7%) subjects with peripheral arterial disease (P = .001, 2-tailed Fisher exact test). Diastasis recti are significantly more common in males with abdominal aortic aneurysm than peripheral arterial disease and may provide an important clue to screen for abdominal aortic aneurysm in those at risk.