Effects of four anaesthetic protocols on the neurological and cardiorespiratory variables of puppies born by caesarean section

Abstract

Twenty-four bitches which had been in labour for less than 12 hours were randomly divided into four groups of six. They all received 0.5 mg/kg of chlorpromazine intravenously as premedication, followed 15 minutes later by either 8 mg/kg of thiopentone intravenously (group 1), 2 mg/kg of ketamine and 0.5 mg/kg of midazolam intravenously (group 2), 5 mg/kg of propofol intravenously (group 3), or 2.5 mg/kg of 2 per cent lidocaine with adrenaline and 0.625 mg/kg of 0.5 per cent bupivacaine with adrenaline epidurally (group 4). Except for group 4, the bitches were intubated and anaesthesia was maintained with enflurane. The puppies' heart and respiratory rates and their pain, sucking, anogenital, magnum and flexion reflexes were measured as they were removed from the uterus. The puppies' respiratory rate was higher after epidural anaesthesia. In general the puppies' neurological reflexes were most depressed after midazolam/ketamine, followed by thiopentone, propofol and epidural anaesthesia.

Estudo clínico e cardiorrespiratório em cadelas gestantes com parto normal ou submetidas à cesariana sob anestesia inalatória com sevofluorano

“…Estes resultados assemelham-se aos de Funkquist et al (1997) e Luna et al (2004), e referem-se tanto ao número de animais natimortos quanto àqueles mortos nas primeiras 24 horas decorridas do nascimento. Entre os 33 filhotes nascidos de parto normal e 32 nascidos de cesariana, ocorreu um caso de natimorto em cada grupo.…”

“…Funkquist et al (1997), ao estudarem dados referentes ao nascimento de 3.908 filhotes, obtiveram 71% de sobrevivência em cães nascidos de cesariana, sendo 26% natimortos e 3% dos filhotes morrendo nos primeiros minutos de vida em decorrência de traumatismos produzidos pela inabilidade materna. Luna et al (2004) encontraram taxa de sobrevivência neonatal de 96% em cães nascidos de cesariana sob quatro diferentes protocolos anestésicos.…”

Comparison of bupivacaine, xylazine and buprenorphine with ketamine combination for spinal analgesia in buffalo calves

“…The followed by group A followed by group B. Reduction sedative effects of epidural administration of xylazine in HR after epidural/spinal administration of are due to the systemic effect of the drug after bupivacaine has been reported in dogs [23], goats [24], absorption through longitudinal epidural veins and and buffalo [25], the decrease in HR was significantly possibly the lymphatics [14]. Comparable degree of more in group B than other groups.…”

Estado neurológico e cardiorrespiratório de filhotes de cães nascidos de parto normal ou de cesariana sob anestesia geral inalatória com sevofluorano

“…Em estudo em que 24 cadelas foram submetidas à cesariana sob quatro diferentes protocolos anestésicos, a depressão dos reflexos neurológicos foi menor após anestesia epidural, seguida pelo propofol/enflurano, tiopental sódico/ enflurano e midazolam/cetamina/enflurano (LUNA et al, 2004).…”