Acta Veterinaria et Zootechnica Sinica ›› 2021, Vol. 52 ›› Issue (4): 1115-1125.doi: 10.11843/j.issn.0366-6964.2021.04.027

• CLINICAL VETERINARY MEDICINE • Previous Articles     Next Articles

Influence of Intravenous-inhalation Anesthesia of Alfaxalone Combined with Isoflurane on Anesthetic Effects in Dogs

DAI Chaoying, LIN Qiangfeng, WU Mengyi, HU Chongwei*   

  1. College of Animal Sciences (College of Bee Science), Fujian Agriculture and Forest University, Fuzhou 350000, China
  • Received:2020-08-04 Online:2021-04-23 Published:2021-04-25

Abstract: In this study, we compared the anesthetic effect of intravenous-inhalation anesthesia(IVIA) of different doses of alfaxalone combined with isoflurane in dogs. Eighteen experimental dogs were randomly numbered and divided into three groups: L (No.1-6), M (No.7-12) and H (No.13-18). Alfaxalone 3, 6, 9 mg·(kg·h)-1 intravenous constant rate infusion (CRI) combined with 0.5% isoflurane inhalation was used, for maintenance anesthesia, respectively. The physiological indexes, analgesia, sedation and muscle relaxant effect of dogs were observed and recorded at 1 h (T0) before induction anesthesia, 15 min, 30 min, 45 min, and 60 min during maintenance anesthesia, and 15 min (75 min) after the anesthesia. After 45 days, the 18 dogs were grouped according to their original numbers: CⅠ (No.1-6), CⅡ (No.7-12) and CⅢ (No.13-18) for inhalation maintenance anesthesia (2% isoflurane), all data is also recorded. Propofol was used for induction anesthesia in both rounds. There was no statistically significant difference in physiological indexes between group L and group CⅠ(P>0.05),however, group L had mild pain reaction;Compared with group M, the temperature and blood oxygen of animals in group CⅡ decreased significantly(P>0.05) and pulse, heart rate, respiratory rate and diastolic blood pressure in group CⅡ significantly decreased (P<0.01). There was no pain response in both groups (M and CⅡ group) during anesthesia. Compared with group H, There were statistical differences in pulse and heart rate in group CⅢ (P<0.05), no pain reaction was observed in both groups (H and CⅢ group) during anesthesia. Both intravenous-inhalation anesthesia and simple inhalation anesthesia can get better anesthesia effect, of which alfaxalone dose of 6 mg/(kg·h)-1 of IVIA can improve the experimental dogs heart rate and pulse, it has little effect on cardiovascular and temperature, at the same time without pain reaction, good depth of anesthesia and wake up fast, compared with the conventional respiratory simple inhalation anesthesia, this anesthetic scheme can improve the overall anesthesia quality of dogs.

Key words: intravenous-inhalation anesthesia, alfaxalone, isoflurane, anesthestic effect of anesthesi, dogs

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