Single port laparoscopic (SILSTM) ovaryhisterectomy vídeo-assisted in female dogs

Over the last few years, minimally invasive surgery is gaining more followers, by showing unparalleled advantages in front of conventional surgery. This fact has been stimulating the development of new instruments, potentially applicable on Veterinary Medicine. The current study aimed to evaluate the feasibility of a single portal technique (SILSTM) to ovariohysterectomy video assisted in bitches, comparing it to a video assisted technique by single-port using an endoscopy with work channel, and with celiotomy, assessing the learning curve, inflammatory and behavioral response, surgical complications and blood loss from animals subjected to these techniques. Thirty female dogs were evaluated, divided into 3 groups with 10 animals each (n=10): ovariohysterectomy by celiotomy (GI), laparoscopic ovariohysterectomy video assisted through a single-port using an endoscope with working channel (GII), and laparoscopic ovariohysterectomy using the SILSTM device (GIII). Mean surgical time, number of complications during and after surgery, pain level after surgery, and serum levels of C-reactive proteins (CRP) an Interleucin-6 (IL-6), were evaluated. Mean surgical times plus/minus standard deviations (SD) in minutes were 30.20±6.41, 60.30±19.15, and 119.42±32.78 for GI, GII and GIII, respectively. On GII, were noted three complications that didn’t need to be converted to celiotomy and one that needs, while GIII presented three complications that needed to be converted to celiotomy. Regarding blood loss, medians plus/minus SD in grams were 16.00±6.04, 2.61±3.18, and 3.79±1.78 for GI, GII and GIII, respectively. Twenty-four hours after the end of the procedures, 90% of animal from GI needed analgesic rescue, while in GII and GIII the values were 0% and 14.3%, respectively. Both video assisted techniques showed themselves secure and effectives, even with complications occurring. IL-6 and CRP levels showed a peak respectively on 12 and 24 hours after the procedures, and these increases seemed to be related with surgical time and not with injuries caused. The higher pain scores observed on GI animals showed that pain on ovariohysterectomy procedures is directly related with visceral manipulation and pulling the ovarian pedicle. (AU)