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    Laparoscopic castration of cryptorchid horses: 20 cases.

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    Introduction: Laparoscopic surgery provides a direct means of assessing intraabdominal testes in horses and offers significant advantages over a laparotomy approach under a general anaesthetic.. Objectives: The purpose of this study was to describe our experience with laparoscopic cryptorchid castration in standing horses. Methods: 22 horses aged 1,5 years in mean, of different breeds and weight were admitted for laparoscopic cryptorchidectomy between May 2006 and April 2008. The retained testicle was the left in 7 horses, the right in 9, in 6 cases both testes were retained. Horses were restrained in a set of stocks and sedated with detomidine HCl in infusion. After surgical preparation of the paralumbar fossa region ipselateral to the retained testis, abdominal insufflation was initiated and maintained using a CO2 pump. After cannula and laparoscope placement the retained testis was identified and grasped. A ligature of 0 polydioxanone suture was napplied to encircle the mesorchium, mesoductus, deferens, and the caudal epididymal ligament. After cutting the spermatic cord, the testis was removed via a flank incision. When present, the descended testis was removed using a standard open standing technique. Results: No surgical or postoperative complications were observed. The median surgical time of procedures was 63 minutes. Discussion and conclusions: Laparoscopy allowed excellent visualization of the structures of the vaginal ring and facilitated removal of the abdominally located testis. The internal and external inguinal rings were not invaded, thus the chance of serious complications that may result during open cryptorchidectomy procedures was minimized. The standing laparoscopic approach to remove the retained testis is easily performed

    Laparoscopic closure of nephrosplenic space to prevent recurrent colics in horses

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    Introduction: Entrapment of the ascending (large) colon within the nephrosplenic space, also called left dorsal displacement of the large colon (LDDLC) occurs commonly in horses. Depending on the severity of the colic, differing approaches to correction of LDDLC have been recommended and include medical treatment, rolling the horse under general anesthesia or surgical correction. The reported recurrence rate for nephrosplenic entrapment is up to 8.1%. To prevent recurrence, colopexy, partial colon resection, surgical closure of the nephrosplenic space under general anesthesia or in standing horses including by laparoscopy have been described. Objectives: To report our experience with, and outcome after, laparoscopic closure of the nephrosplenic space in horses with recurrent LDDLC. Number of recurrent events and interval between events were evaluated before and after surgery. Methods: Between May and December 2008, 10 horses (3 geldings, 2 stallions, 5 mares), aged 4 to 18 years, admitted because of recurrent LDDLC were treated after resolution of the displacement, by laparoscopic closure of the nephrosplenic space. Horses, were restrained standing in stocks, sedated with detomidine (0,02 mg/kg IV in 1 It 0.9% NaCl infusion). Several portal sites in the left paralumbar fossa were infiltrated with 2% mepivacaine. Closure of the nephrosplenic space was accomplished by apposing the dorsomedial splenic capsule to the dorsal portion of the nephrosplenic ligament with 0 polyglyconate in a continuous pattern. Follow-up information was obtained by telephone interview of owners. Results: Mean time for laparoscopic surgery was 55 minutes and closure of nephrosplenic space was successful without intraoperative or postoperative complications. LDDLC recurrence did not occur in any horse. Discussion and conclusions: Our results suggest that laparoscopic closure of the nephrosplenic space will prevent recurrence of LDDLC. All 10 horses had good cosmetic outcome and there were no recognized signs of pain associated with this kind of surgery
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