Introduction

Laparoscopic-assisted ovariohysterectomy (LaOVH) can be successfully performed in dogs. For transection of the ovarian pedicles, different vessel-sealing devices (VSD) are used. In 2012 a novel VSD (Caiman®) was introduced into the market. This device includes a rotating and articulating tip, for better handling within the body cavities as well as to prevent slippage of tissue. Furthermore, it offers a longer and more homogeneous sealing area.

Objectives

Randomized, prospective clinical trial including twelve consecutive, client-owned, healthy, intact female dogs of different breeds admitted for elective LaOVH. To report and compare the duration of surgery, the number of seals per ovarian pedicle, and intraoperative complications with two different VSOs (LigaSure™ vs. Caiman®).

Methods

Dogs were randomly assigned to one of two treatment groups. One group was operated using the LigaSure™ (n=6), the other one was operated using the Caiman® (n=6). Length of time for each surgical step, seals needed for transection of each ovary and bleeding events during transection of the ovarian pedicles were compared.

Results

Transection of the ovarian pedicles using the Caiman® VSD required significantly less seals per ovary. However, overall surgical time was not significantly reduced. Intraoperative hemorrhage occurred in both groups but was more common in the LigaSure™ group. Emergency conversion was not required in any case.

Conclusions

The Caiman® VSD can be safely used for LaOVH in dogs, allowing for less seals for transection of the ovarian pedicles due to a longer working length of the tip when compared to the LigaSure™.