Effects of pneumoperitoneum induced at various pressures on cardiorespiratory function and working space during laparoscopy in cats

Abstract

Values of cardiopulmonary variables were largely unchanged by induction of pneumoperitoneum in healthy cats up to an IAP of 8 mm Hg, and no clinically important increases in working space were evident at an IAP of 15 versus 8 mm Hg. These findings provide little justification for use of IAPs > 8 mm Hg in healthy cats undergoing laparoscopic procedures; however, whether the situation is similar in diseased or elderly cats remains to be determined.

Cardiopulmonary Effects of Laparoscopic Ovariectomy of Variable Duration in Cats

“…We did not compare different intraperitoneal pressures and at the time of this study there were no standard recommendations for insufflation pressure in cats. 1,21,24 The tachycardia detected at T1 in both LAP groups could be from procedural stimulation. The single-incision port used allowed for ovariectomy using only 1 incision; however, it also caused stretching of the incision.…”

“…Further studies in cats with different abdominal insufflation pressures and associated changes in hemodynamics are indicated to better answer this question. We did not compare different intraperitoneal pressures and at the time of this study there were no standard recommendations for insufflation pressure in cats …”

Video-assisted ovariohysterectomy in domestic cats (Felis catus, Linnaeus, 1758) using two access portals

“…The decrease in body temperature during laparoscopic surgery has been previously discussed and is related to the pneumoperitoneum 23 . This occurs either because of cooling by the gas due to its expansion as it leaves the cylinder 25 or because of anesthesia 26 , which depresses the thermostatic mechanisms of the hypothalamus and metabolism 25 .…”

“…Changes such as bradyarrhythmias, which are due to peritoneal stretching and vagal stimulation, may occur after the initiation of the pneumoperitoneum 23 ; if this occurs, the insufflation should be stopped immediately but may be restarted after the patient is stabilized. This event was not observed in any cat in this study.…”

In vitro evaluation of a simulated pneumoperitoneum environment using carbon dioxide on canine transitional cell carcinoma

“…Advantages of laparoscopic surgery include decreased postoperative pain, possible reduction in surgical site infections, shorter hospitalization, and faster return to normal activity . To create a working space for laparoscopy, a pneumoperitoneum is commonly created with insufflation of an inert gas . Carbon dioxide (CO 2 ) is the most frequently used insufflation gas because it is colorless, odorless, nonflammable and does not support combustion when electrosurgery is used .…”