The aim of the present study is to prospectively assess whether deep NMB (zero response to train of four and a post tetanic count of no more than 10 responses using a nerve stimulator monitoring) till the end of surgery, followed by sugammadex (bridion®) reversal is superior to the present practice of gradual NMB reduction at the end of surgery followed by neostigmine (Prostigmin®, Vagostigmin®)reversal, in patients undergoing laparoscopic sleeve gastrectomy. The investigators hypothesize that providing deep NMB throughout the procedure creates better conditions for surgery, while reversal of deep muscle relaxation with sugammadex (bridion®) will enable quick and full reversal of relaxation and fewer postoperative respiratory events as compared to neostigmine (Prostigmin®, Vagostigmin®) reversal. Surgical conditions will be assessed by the surgeons, blinded to the treatment given to the patients, on a 1-4 Likert scale in 5 minutes intervals from abdominal insufflation with gas till the end of surgery (estimated time of 120 minutes). Participants will be followed for respiratory adverse events from admission to the post anesthesia care unit to discharge to the surgical department (continuous measurement of hemoglobin oxygen saturation and respiratory rate for an expected average of 3 hours) and from admission to the surgical department till the time of home discharge (measurement of hemoglobin oxygen saturation and respiratory rate every 6 hours for an expected average of 5 days).