Fotobiomodulação na ferida cirúrgica após cirurgia bariátrica

Abstract

Bariatric surgery is a successful means for weight loss in morbid obesity, it is an extensive surgery, which may lead to surgical complications. Low level laser therapy (LLLT) has been increasingly applied due to its effectiveness in decreasing inflammatory response, accelerating tissue repair and analgesic response. The study aim was to investigate LLLT effects in post-operative of bariatric surgery and determine the lasertherapy outcome in this surgical procedure through action in inflammation, wound healing through clinical observation and analgesia. Randomized clinical trial, placebo-controlled, in which 85 patients underwent gastric bypass (RYGB) by open means. Patients were divided into 2 groups: Laser group- 43 patients received the CW diode with 808 nm wavelength, fluence-10J/cm², output power- 100mW, time- 20seconds/pt and total energy 2J/pt. The LLLT was applied at 10 points on surgical bed perimeter in three sessions. Placebo group had 42 patients were receiving the disabled Laser equipment. The temperature through digital thermometer along the scar and 20 cm away from it were measured. Pain was assessed by visual analogue scale (VAS) in POI, 1st and 2nd PO and the surgical wound were analyzed, through digital photography in the POI /1stPO , 7thPO and 30thPO to inspect the surgical scar and for complications like seroma. Laser group (LLLT) demonstrated temperature decrease along wound region, signalizing inflammatory process reduction. As for wound repairing better scar lesion and pain assessment improvement was observed. Three sessions of LLLT showed better anti-inflammatory and anti edematous action, facilitating the analgesic effects.