Benefits of Opioid Free Anesthesia on Morphine Consumption in Gastric Bypass

Opioid free anesthesia is a recent anesthesia technique with the aim to avoid peroperative use of morphinics to allow a diminution of secondary morphinics effects in the postoperative period. There is no robust data on the real benefits of such procedures. Obese patients are particular at risk of secondary effects of opioids. The aim of our study is to compare opioid free anesthesia to multimodal anesthesia on postoperative morphine consumption after a laparoscopic gastric bypass.