RCT: Prophylactic closed incision negative pressure wound therapy reduces (difference close to statistical significance; P=0.06) the risk of surgical site infection in obese women undergoing cesarean section. 7 May, 2021 | 08:24h | UTC Closed incision negative pressure wound therapy versus standard dressings in obese women undergoing caesarean section: multicentre parallel group randomised controlled trial – The BMJ