Changes in external respiratory during cesarean section in dogs under various methods of general anesthesia

Abstract

The aim of this study was to investigate the effect of popular non-inhaled and inhaled general anesthetics on the respiratory function of dogs during operative delivery. Experimental studies have been performed on pregnant bitches that have been subjected to caesarean section. The selection of animals was carried out according to pre-selected criteria, the age of the animals participating in the experiment was from 2 to 6 years, the average body weight was 22 ± 4.6 kg. Animals were divided into 3 groups. Dogs in the first group received intravenous anesthetic propofol at a dose of 4-6 mg/kg for induction and maintenance of general anesthesia. he dogs of the second group used an inhaled halogen-containing anesthetic isoflurane 0.5–2.0 vol% for the administration and maintenance of anesthesia. For the induction and maintenance of general anesthesia in animals of the third group, a more modern inhalation anesthetic sevoflurane 1.0–2.0 vol% was used. Each group included 20 animals. Analyzing the results obtained on the study of the functions of external respiration of dogs during caesarean section under general anesthesia, it can be argued that the most significant changes in the studied parameters occurred at the initial stages of anesthesia with propofol, which are associated with an increase in the concentration of this anesthetic in the blood and a more pronounced depression of the respiratory center compared to with inhalation anesthetics.