Use of neuraxial anesthesia for hybrid lower extremity revascularization is associated with reduced perioperative morbidity.

OBJECTIVE: Recent advances in endovascular technology have allowed complex peripheral arterial disease (PAD) to be treated with less invasive hybrid procedures under neuraxial anesthesia. This study investigates the perioperative outcomes of hybrid lower extremity revascularization (LER) performed under neuraxial anesthesia (NAA) vs general anesthesia (GA). We hypothesize that the use of NAA is associated with improved outcomes.

METHODS: The 2005-2017 American College of Surgeons National Surgical Quality Improvement Program dataset was used to identify patients who underwent hybrid LER for PAD. Based on the primary anesthetic technique, patients were divided into two groups: GA and NAA, which included spinal or epidural anesthesia. Baseline characteristics of the two groups were compared. A group of patients treated under GA were matched (2:1) to patients in the NAA group based on gender, age, race, functional status, transfer status, chronic obstructive pulmonary disease, wound infection, American Society of Anesthesiologists classification, emergent surgery, preoperative sepsis, indication, and type of hybrid procedure. Patient characteristics and 30-day outcomes were compared.

RESULTS: Of 9430 patients who underwent hybrid LER, only 452 (4.8%) received NAA. Patients who received NAA were older (mean age, 68 ± 8.4 vs 72.3 ± 9.2; P = .004) and were more likely to be white (70.9% vs 85.6%; P < .0001), have dependent functional status (7.6% vs 13.1%; P < .0001), chronic obstructive pulmonary disease (24.3% vs 17.5%; P = .001), and a diagnosis of wound infection (15% vs 23.5%; P < .0001). After propensity matching, 904 patients in the GA group were compared with 452 patients in the NAA group with no difference in baseline characteristics. NAA was associated with reduced rate of more than 48 hours' ventilator requirement (2.4% vs 0.2%; P = .0014), bleeding requiring transfusion (17.5% vs 8%; P < .0001), and overall morbidity (29.3% vs 19%; P < .0001), as well as shorter length of hospital stay (6.8 ± 9.3 vs 5.3 ± 6.1 days; P = .0026) and total operating time (237.8 ± 109 vs 202.4 ± 113 minutes; P < .0001) compared with GA.

CONCLUSIONS: NAA is an infrequently used anesthesia technique during hybrid LER and is primarily used for older patients with chronic obstructive pulmonary disease. NAA is associated with decreased perioperative morbidity and length of hospital stay compared with GA and may be considered in this sicker patient population.