Outcomes after endovascular abdominal aortic aneurysm repair are equivalent between genders despite anatomic differences in women

Dubois L, Novick TV, Harris JR, et al (London Health Sciences Centre and Western Univ, Ontario, Canada) J Vasc Surg 57:382-389.e1, 2013^§

Abstract

Objective

Prior work confirms gender-specific anatomic differences in patients undergoing endovascular aneurysm repair, but the clinical implications remain ill defined. The purpose of this study was to compare gender-specific early outcomes after endovascular aneurysm repair using a large international registry.

Methods

Over the 2-year period ending in 2011, 1,262 patients (131 women, 10.4%; 1,131 men, 89.6%) with infrarenal aneurysms treated with the Endurant stent graft were prospectively enrolled in the ENGAGE registry and followed clinically and radiographically.

Results

Women were older (75.5 ± 7.0 vs 72.8 ± 8.1; P = .0003) and had smaller aneurysms (57.8 ± 9.5 vs 60.6 ± 11.9 mm; P = .01). Women’s infrarenal aortic necks were of narrower diameter (21.8 ± 3.4 vs 24.0 ± 3.5 mm; P < .0001), shorter length (24.3 ± 11.8 vs 27.3 ± 12.4 mm; P = .009), and greater angulation (37.7 ± 26.2° vs 29.4 ± 23.3°; P = .0002). More women had an infrarenal neck angle > 60° (19.2% vs 9.1%; P = .001). Technical success was achieved in equal numbers of women and men (97.7% vs 99.2%; P = .10). On completion angiography, the incidence of any endoleak (21.5% vs 15.4%; P = .08) and type I endoleak (1.5% vs 1.1%; P = .60) did not differ between genders. At the 1-month follow-up, there were no differences between women and men with respect to endograft occlusion (2.5% vs 1.9%; P = .70), and differences observed in any endoleak (17.2% vs 11.4%; P = .08) and type I endoleaks (3.3% vs 1.2%; P = .08) did not reach statistical significance. Freedom from major adverse events was similar for women and men at 30 days (98.5% vs 95.8%; P = .23) and 1 year (85% vs 89.8%; P = .40). Survival at 30 days (100% vs 98.6%) and 1 year (92.5% vs 91.6%; P = .99) was similar for women and men.

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