Veterinary anaesthesia and analgesia · 2015
The sedative effects of intramuscular low-dose medetomidine in combination with butorphanol or methadone in dogs.
Сравнительное исследованиеСтатьяРандомизированное исследованиеНазвание и аннотация: Перевод в очереди
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Puighibet Zoë, Costa-Farré Cristina, Santos Laura, Canfrán Susana, Gómez de Segura Ignacio A
Аннотация
OBJECTIVE: To compare the sedative effects of an intramuscular (IM) low dose of medetomidine in combination with butorphanol or methadone in dogs.
STUDY DESIGN: Prospective, blinded, randomized clinical trial.
ANIMALS: Forty-eight healthy adult dogs that required sedation for diagnostic or surgical elective procedures.
METHODS: Dogs were sedated IM with medetomidine (2.5 μg kg(-1)) and either butorphanol (0.4 mg kg(-1)) or methadone (0.4 mg kg(-1)). The degree of sedation was assessed every 10 minutes, for 30 minutes, using a numeric descriptive scale. Data on heart rate (HR), respiratory rate, capillary refill time, temperature and response to a toe pinch were recorded. The response to venous catheterization at minute 30 was also evaluated.
RESULTS: Both combinations produced moderate to deep sedation with a maximal effect at 20-30 minutes without significant differences in the degree of sedation between the treatments at any studied time-point. HR decreased from minute 10 to minute 30 with both opioid combinations (p<0.05); this reduction did not differ between groups (p>0.05). No differences between groups were detected in any of the other variables.
CONCLUSIONS AND CLINICAL RELEVANCE: Combinations of a low dose of medetomidine with butorphanol or methadone, respectively, provide similar degrees of sedation.
STUDY DESIGN: Prospective, blinded, randomized clinical trial.
ANIMALS: Forty-eight healthy adult dogs that required sedation for diagnostic or surgical elective procedures.
METHODS: Dogs were sedated IM with medetomidine (2.5 μg kg(-1)) and either butorphanol (0.4 mg kg(-1)) or methadone (0.4 mg kg(-1)). The degree of sedation was assessed every 10 minutes, for 30 minutes, using a numeric descriptive scale. Data on heart rate (HR), respiratory rate, capillary refill time, temperature and response to a toe pinch were recorded. The response to venous catheterization at minute 30 was also evaluated.
RESULTS: Both combinations produced moderate to deep sedation with a maximal effect at 20-30 minutes without significant differences in the degree of sedation between the treatments at any studied time-point. HR decreased from minute 10 to minute 30 with both opioid combinations (p<0.05); this reduction did not differ between groups (p>0.05). No differences between groups were detected in any of the other variables.
CONCLUSIONS AND CLINICAL RELEVANCE: Combinations of a low dose of medetomidine with butorphanol or methadone, respectively, provide similar degrees of sedation.