Abstract
The potential of Atipamezole (ATI) to reverse Ketamine/Xylazine (KET/XYL) anesthesia in the Olive baboon (Papio anubis) was studied. Anesthesia was induced with 10 mg/kg KET and 0.5 mg/kg XYL intramuscularly. Mean arousal time (MAT), heart rate (HR), systolic arterial blood pressure (SAP), rectal temperature, respiratory rate (RR), and hemoglobin oxygen saturation (SpO(2)) were monitored. Baboons were treated with: KET/XYL only, KET/XYL followed by 100 microg/kg ATI or by 200 microg/kg ATI administered 25 minutes after KET/XYL. Atipamezole rapidly reversed depressed HR and SAP (10 +/- 5.2 minutes), RR (5 +/- 2 minutes) and SpO(2) (3 +/- 6 minutes) and significantly decreased MAT (13 +/- 2.2 minutes) vs. KET/XYL alone (35 +/- 5 minutes). Emesis was absent and salivation was observed after administration of 200 microg/kg ATI only. Atipamezole at 100 microg/kg is sufficient for rapid and smooth reversal of KET/XYL anesthesia in the Olive baboon with minimal side effects.
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