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1 January 2000 IMMOBILIZATION OF CALIFORNIA SEA LIONS USING MEDETOMIDINE PLUS KETAMINE WITH AND WITHOUT ISOFLURANE AND REVERSAL WITH ATIPAMEZOLE
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Abstract

The use of medetomidine and ketamine, alone and in combination with isoflurane, with atipamezole reversal was evaluated for immobilizing 51 California sea lions (Zalophus californianus) for a variety of medical procedures at a rehabilitation center in northern California (USA) between May 1997 and August 1998. Animals were given 140 μg/kg medetomidine with 2.5 mg/kg ketamine intramuscularly. Mean (±SD) time to maximal effect was 8 ± 5 min. At the end of the procedure, animals were given 200 μg/kg atipamezole intramuscularly. Immobilization and recovery times were, respectively, 25 ± 12 and 9 ± 7 min for 35 animals maintained with medetomidine and ketamine alone and 58 ± 30 and 9 ± 9 min for 16 animals intubated and maintained with isoflurane. No mortalities occurred as a result of the immobilizations. Disadvantages of the medetomidine and ketamine combination included a moderate variation in time to maximal effect and plane of sedation, a large injection volume and high cost. However, this combination offers safe and reversible immobilization that can be easily administered by the intramuscular route and that produces a plane of anesthesia that is sufficient to carry out most routine diagnostic procedures.

Haulena, Gulland, Calkins, and Spraker: IMMOBILIZATION OF CALIFORNIA SEA LIONS USING MEDETOMIDINE PLUS KETAMINE WITH AND WITHOUT ISOFLURANE AND REVERSAL WITH ATIPAMEZOLE
Martin Haulena, Frances M. D. Gulland, Donald G. Calkins and Terry R. Spraker "IMMOBILIZATION OF CALIFORNIA SEA LIONS USING MEDETOMIDINE PLUS KETAMINE WITH AND WITHOUT ISOFLURANE AND REVERSAL WITH ATIPAMEZOLE," Journal of Wildlife Diseases 36(1), (1 January 2000). https://doi.org/10.7589/0090-3558-36.1.124
Received: 12 December 1998; Accepted: ; Published: 1 January 2000
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