Abstract
Despite all of the advantages of laparoscopic surgery, there remain certain concerns. An increased intra-abdominal pressure (IAP) exerted by CO2 pneumoperitoneum has adverse effects on all organs and systems especially on the circularity system and cardiac function. To understand effect of IAP study was undertaken on twelve female mongrel dogs brought for laparoscopic ovariohysterectomy. All dogs were sedated with butorphanol, induced with propofol and maintenance of anesthesia was done with isoflurane. All dogs underwent a detailed systemic investigation protocol including echocardiographic examination. Physiological parameters such as rectal temperature decreased significantly throughout anaesthetic period and come to normal after complete recovery. Heart rate, pulse rate and respiratory rate was decreased significantly after induction of anaesthesia and increased after insufflation of CO2. Echocardiographic parameters like EF and CO were decreased significantly after induction of anaesthesia by 9% and 33% respectively and after insufflation of CO2 by 8% and 5% respectively. However, all other parameters (FS and SV) showed no significant changes. In conclusion, effects of CO2 pneumoperitoneum and anaesthesia on cardiac function are mild and of transient duration in healthy dogs.
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