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Operative Complexity and Prior Endovascular Intervention Negatively Impact Morbidity after Aortobifemoral Bypass in the Modern Era.

Abstract：

BACKGROUND:Endovascular therapy is first-line treatment for aortoiliac occlusive disease. This shift has altered case volume, patient selection, and risk profile for aortobifemoral bypass (ABF). Given this, we sought to investigate factors influencing morbidity and mortality after ABF in the endovascular era. METHODS:Data for patients undergoing primary ABF from 2000 to 2017 were queried. Primary endpoints included major complication (unplanned return to the operating room, life-or-limb-threatening complications, and 30-day readmission or death) and long-term survival. Logistic regression and Cox proportional hazard models determined predictors of primary endpoints. Kaplan-Meier analysis estimated patency, freedom from reintervention, and long-term survival. RESULTS:During these 17 years, 256 patients underwent primary ABF. Mean age was 67.9 ± 10.6 years and 51.2% were women. Most had claudication (69.5%); 28.9% had critical ischemia. Sixty-five (25.4%) patients had prior aortoiliac endovascular intervention, 106 (41.4%) required aortic cuff endarterectomy, 111 (43.3%) femoral outflow adjunct, 9 (3.5%) simultaneous lower extremity bypass, and 230 (89.8%) had Trans-Atlantic Inter-Society Consensus D lesions. Concomitant renovisceral revascularization was needed in 42 (16.4%) patients. Thirty-day mortality was 2.7%. Major complication occurred in 92 patients (35.9%). Predictors included prior endovascular intervention (odds ratio [OR], 2.2; 95% confidence interval [CI]: 1.2-4.1; P = 0.01), malignancy (OR, 2.6; 95% CI: 1.3-5.3; P = 0.01), intraoperative complication (OR, 3.3; 95% CI: 1.3-9.2; P = 0.03), operative blood loss, (OR, 1.0 per 100 ml; 95% CI: 1.0-1.0; P = 0.03), and cuff endarterectomy (OR, 1.8; 95% CI: 1.0-3.1; P = 0.04). Median follow-up was 5.3 years (interquartile range: 7.2 years). Survival at 1, 3, and 5 years was 94%, 90%, and 82% respectively. Primary patency and freedom from reintervention at 5 years were 76% and 79%, respectively. Predictors of late mortality included malignancy (hazard ratio [HR], 2.3; 95% CI: 1.3-3.9; P < 0.01), chronic obstructive pulmonary disease (HR, 1.8; 95% CI: 1.1-3.1; P = 0.02), congestive heart failure (HR, 2.3; 95% CI: 1.2-4.3; P = 0.01), Rutherford's class (HR, 1.5; 95% CI: 1.1-2.1; P = 0.01), operative blood loss (HR 1.0 per 100 ml; 95% CI: 1.0-1.0; P = 0.04) and chronic kidney disease (HR, 2.3; 95% CI: 1.2-4.2; P = 0.01). CONCLUSIONS:Although late outcomes after ABF in the contemporary era remain acceptable, major complications are frequent. Operative complexity and prior endovascular revascularization predict complications. Long-term survival is driven by degree of limb ischemia and comorbidities. These should be considered in selection for ABF, potentially modifying approach to improve outcomes.

journal_name

Ann Vasc Surg

journal_title

Annals of vascular surgery

authors

DeCarlo C,Boitano LT,Schwartz SI,Lancaster RT,Conrad MF,Eagleton MJ,Brewster DC,Clouse WD

doi

10.1016/j.avsg.2019.03.040

subject

Has Abstract

pub_date

2020-01-01 00:00:00

pages

21-29

eissn

0890-5096

issn

1615-5947

pii

S0890-5096(19)30410-8

journal_volume

pub_type

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Operative Complexity and Prior Endovascular Intervention Negatively Impact Morbidity after Aortobifemoral Bypass in the Modern Era.