Abstract
Medically complex patients who need abdominal aortic aneurysm (AAA) repair are at increased risk of mortality. We study the effects of interhospital transfer to high-volume hospitals (HVHs) on postoperative complications and mortality after complications in these patients. Data for 491,779 patients undergoing intact AAA surgery were extracted using Medicare files. Patient demographics, comorbidities, hospital volume, repair type, and patient transfer status were collected. Primary outcomes were postoperative complications and failure to rescue within 30 days after surgery. Data were analyzed using multivariable and propensity analysis. From 2000 to 2011, the percentage of patients transferred to another hospital for surgery before starting treatment more than doubled from .7% to 1.9% for endovascular aneurysm repair (EVAR; P < .001) and from 1.2% to 3.7% for open repair (P < .001). At baseline, transferred patients had more congestive heart failure (18.7% vs 11.2%; P < .001), coronary (17.4% vs 15.0%; P < .001), pulmonary (38.3% vs 33.6%; P < .001), and renal failure (8.1% vs 4.6%; P < .001) comorbidities. Transferred patients incurred more complications after EVAR (25.1% vs 12.8%; P < .001) or open repair (42.3% vs 35.5%; P < ...Continue Reading
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