Postoperative early major and minor complications in laparoscopic vertical sleeve gastrectomy (LVSG) versus laparoscopic Roux-en-Y Gastric Bypass (LRYGB) procedures: A meta-analysis and systematic review
The aim of this meta–analysis and systematic review was to compare the “early postoperative complication rate i.e. within 30–days” reported from randomized control trials (RCTs) comparing these two procedures. This meta–analysis and systematic review of RCTs suggests that fewer early major and minor complications are associated with LVSG compared with LRYGB procedure. However, this does not translate into higher readmission rate, reoperation rate, or 30–day mortality for either procedure.

RCTs comparing the early complication rates following LVSG and LRYGB between 2000 and 2015 were selected from PubMed, Medline, Embase, Science Citation Index, Current Contents, and the Cochrane database.
The outcome variables analyzed included 30-day mortality, major and minor complications and interventions required for their management, length of hospital stay, readmission rates, operating time, and conversions from laparoscopic to open procedures.

Six RCTs involving a total of 695 patients (LVSG n = 347, LRYGB n = 348) reported on early major complications.
A statistically significant reduction in relative odds of early major complications favoring the LVSG procedure was noted (p = 0.05).
Five RCTs representing 633 patients (LVSG n = 317, LRYGB n = 316) reported early minor complications.
A non-statically significant reduction in relative odds of 29 % favoring the LVSG procedure was observed for early minor complications (p = 0.4).
However, other outcomes directly related to complications which included reoperation rates, readmission rate, and 30-day mortality rate showed comparable effect size for both surgical procedures.