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16.03.2019 | Original Contributions | Ausgabe 6/2019 Open Access

Obesity Surgery 6/2019

Anaesthetic Factors Affecting Outcome After Bariatric Surgery, a Retrospective Levelled Regression Analysis

Obesity Surgery > Ausgabe 6/2019
Jan P. Mulier, Bruno Dillemans
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Deep neuromuscular block (NMB) and opioid-free anaesthesia (OFA) improve surgical workspace and reduce post-operative opioid consumption, but its impact on perioperative outcomes is unknown. This observational study compared complications and healthcare resource utilization after bariatric surgery, with or without continuous deep NMB or OFA.


We included all 9246 patients who underwent laparoscopic bariatric surgery at our institution from January 2009 to February 2017. Continuous clinical deep NMB was defined as receiving a continuous infusion of rocuronium with a dose of > 1 mg/kg IBW for each hour or sugammadex > 2 mg/kg total body weight at the time of reversal. We analysed the effect of continuous clinical deep NMB and OFA and covariates on 1 month post-operative complications using the Clavien-Dindo (CD) classification (grades II–V) and healthcare utilization (hospital length of stay [LOS], rates of reoperations within 1 week, high-dependency care unit admissions, and readmissions within 1 month). Covariates included experience of the attending anaesthesiologist, patient age, sex, body mass index, American Society of Anesthesiologists physical status score, obstructive sleep apnoea syndrome, diabetes, hypertension, surgery type, surgical team experience, and neostigmine use.


OFA, continuous deep NMB, surgical and anaesthesia team experience, younger age, and surgery type were associated with fewer complications. OFA was associated with lower healthcare resource utilization. Reduced LOS was also associated with younger age, surgical team experience, and surgery type, but not continuous deep NMB.


Continuous deep NMB and OFA were associated with fewer complications after bariatric surgery.

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