The recently developed minimally invasive techniques of ovariohysterectomy (OVH) have been studied in dogs in order to optimize their benefits and decrease risks to the patients. The purpose of this study was to compare surgical time, complications and technical difficulties of transvaginal total-NOTES, singleport laparoscopic-assisted and conventional OVH in bitches. Twelve bitches were submitted to total-NOTES (NOTES group), while 13 underwent single-port laparoscopic-assisted (SPLA group) and 15 were submitted to conventional OVH (OPEN group). Intra-operative period was divided into 7 stages: (1) access to abdominal cavity; (2) pneumoperitoneum; approach to the right (3) and left (4) ovarian pedicle and uterine body (5); (6) abdominal or vaginal synthesis, performed in 6 out of 12 patients of NOTES; (7) inoperative time. Overall and stages operative times, intra and postoperative complications and technical difficulties were compared among groups. Mean overall surgical time in NOTES (25.7±6.8 minutes) and SPLA (23.1±4.0 minutes) groups were shorter than in the OPEN group (34.0±6.4 minutes) (P<0.05). The intraoperative stage that required the longest time was the approach to the uterine body in the NOTES group and abdominal and cutaneous sutures in the OPEN group. There was no difference regarding the rates of complications. Major complications included postoperative bleeding requiring reoperation in a bitch in the OPEN group, while minor complications included mild vaginal discharge in four patients in the NOTES group and seroma in three bitches in the SPLA group. In conclusion, total-NOTES and SPLA OVH were less time-consuming then conventional OVH in bitches. All techniques presented complications, which were properly managed.Keywords: canine, spay, laparoscopy, operative time, transvaginal approach Palavras-chave: caninos, castração, laparoscopia, tempo operatório, abordagem transvaginal RESUMO O emprego de novas técnicas minimamente invasivas de ovário-histerectomia (OHE) vem sendo estudado em cães com o intuito de otimizar seus benefícios e reduzir os riscos aos pacientes. O presente estudo objetivou comparar o tempo cirúrgico, as complicações e dificuldades técnicas entre as abordagens por total-NOTES transvaginal, videoassistida com único portal e por celiotomia para ovário-histerectomia (OVH) em cadelas. Foram operados 12 animais por total-NOTES (grupo NOTES), 13 pela técnica videoassistida (grupo SPLA) e 15 pela técnica convencional (grupo OPEN

Pleuroperitoneal hernias are the most uncommon type of diaphragmatic hernias in dogs and cats. The treatment of choice is surgery and may involve the use of prosthetic implant through celiotomy. In the current report, laparoscopic repair of a congenital pleuroperitoneal hernia using polypropylene mesh in a dog is described. The surgery was feasible. Appropriate reduction of the hernia was carried out and no complications were noted.

In the current experimental study, two different instruments were compared for prophylactic hemostasis during a 3-port technique of laparoscopic ovariohysterectomy (OVH) in bitches. Moreover, the need for port enlargement for specimen retrieval using 5mm or 10mm trocartes, technical difficulties and complications were assessed. Ultrasonic energy and a vascular sealing system were tested. Duration of surgery, patient weight and diameter of the uterine arteries and veins were compared among the groups. Fifteen dogs randomly divided into three groups (GI, GII, GIII) were submitted to ovariohysterectomy with hemostasis from the use of ultrasonic scalpel or vascular sealing equipment. In GI and GII the LigaSure ™ impedance-controlled bipolar vessel-sealing device was used, differing in the size of trocartes used between groups, and in GIII Autosonix ™ was used. Patients' weight, duration of surgery, technical difficulties and complications were compared among the groups. Statistical analysis showed no difference between the data analyzed among the groups. In conclusion, both methods of hemostasis were effective for 3-port total laparoscopic ovariohysterectomy in bitches. However, 5mm trocartes were not adequate for retrieval of the uterus and ovaries without need for enlargement of the port incision.Keywords: laparoscopy, canines, coagulation systems, spay, surgery RESUMO No presente experimento, foram comparados dois diferentes equipamentos, um com emprego de energia ultrassônica, e outro utilizando sistema de selamento vascular, como única forma de hemostasia em ovário-histerectomias laparoscópicas com três portais em cadelas. Ademais, a necessidade de ampliação da incisão do portal de 5mm ou de 10mm para a remoção dos espécimes ressecados, dificuldades técnicas e complicações foram avaliadas. Quinze cadelas aleatoriamente distribuídas em três grupos (GI, GII, GIII) foram submetidas à ovário-histerectomia com hemostasia a partir da utilização de bisturi

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