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  • Title: Early reintervention after open and endovascular abdominal aortic aneurysm repair is associated with high mortality.
    Author: Deery SE, O'Donnell TFX, Bodewes TCF, Dalebout BA, Pothof AB, Shean KE, Darling JD, Schermerhorn ML.
    Journal: J Vasc Surg; 2018 Feb; 67(2):433-440.e1. PubMed ID: 28943011.
    Abstract:
    OBJECTIVE: Although reinterventions are generally considered more common after endovascular aneurysm repair (EVAR) than after open surgical repair (OSR), less is known about reintervention in the early postoperative period. Furthermore, there are few data regarding the impact of early reintervention on 30-day mortality. We sought to evaluate the rates and types of reintervention after abdominal aortic aneurysm (AAA) repair and the impact of reintervention on postoperative mortality. METHODS: The American College of Surgeons National Surgical Quality Improvement Program (NSQIP) was queried from 2012 to 2014 for all intact, infrarenal AAA repairs. The 30-day reintervention was classified by Current Procedural Terminology (CPT) codes. Univariate analysis comparing patients with and without reintervention was performed with the Fisher exact test and Mann-Whitney U test. Logistic regression was used to identify predictors of reintervention and to assess the association between 30-day reintervention and mortality. RESULTS: We identified 5877 patients (OSR, 658 [11%]; EVAR, 5219 [89%]), of whom 261 underwent reintervention (OSR, 7.1%; EVAR, 4.1%; P < .01). Patients who underwent reintervention had larger aortic diameter (median, 5.7 cm vs 5.5 cm; P < .01), were more often symptomatic at presentation (16% vs 9.1%; P < .01), and were more likely to have renal insufficiency (7.7% vs 3.6%; P < .01) and history of prior abdominal operations (32% vs 26%; P = .04). Patients who underwent reintervention had higher 30-day mortality (OSR, 28% vs 2.8% [P < .001]; EVAR, 12% vs 1.0% [P < .001]) and major complications. Factors significantly associated with reintervention included open repair, diameter, symptom status, hypertension, and renal insufficiency. After adjusting for demographics, comorbidities, and type of repair, reintervention was independently associated with 30-day mortality after EVAR and OSR (odds ratio, 13; 95% confidence interval, 8-22; P < .001). CONCLUSIONS: Compared with EVAR, patients undergoing open infrarenal AAA repair were significantly more likely to undergo 30-day reintervention, which could be related to higher open anatomic complexity and lower experience of the surgeon with open repair. Reintervention after both EVAR and OSR was associated with a >10-fold increase in postoperative mortality, emphasizing the need to minimize the complications associated with reintervention.
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