Influência das condições obstétricas ao nascimento sobre padrões de vitalidade e bioquímica neonatal na espécie canina / Canine neonatal vitality and biochemistry profile under distinct obstetric conditions
AUTOR(ES)
Cristina de Fátima Lúcio
DATA DE PUBLICAÇÃO
2008
RESUMO
Studies accomplishing canine neonatology are scarce in Veterinary Medicine comparing to Human Neonatology due to the particularity of this refered period. The aims of the present study were to establish standard laboratorial values of the canine neonate, identify metabolic changes of bitches and neonates born under different obstetric conditionsl, verify the consequences of dystocia treated medically by oxytocin administration on maternal and neonatal variables and to measure maternal and neonatal cortisol levels on distinc stress situations during parturition. Twenty nine canine females were allocated into 3 groups according to the obstetric conditions: eutocia (group 1; n=10), manipulative obstetric assistance or cesarean section (group 2; n=10) and maternal dystocia treated with oxytocin (group 3; n=9). Fifty one neonates were submitted to a clinical evaluation by Apgar scoring and body temperature measurement immediately after birth, at 5 and 60 minutes postnatal; and hemogasometric evaluation, blood glucose and cortisol assay immediately after birth and 60 minutes postnatal. Maternal noninvasive arterial blood pressure, blood glucose and cardiac monitoring were peformed during the first stage of labor, intra-partum, immediately after the last puppy was born and 1 hour later. Neonates from distinct groups showed mixed acidosis in addition to hypoxemia at birth. Neonates remained under metabolic acidosis even after 1 hour of birth due to a detrimental effect on hypoxia. Comparing the results among groups, puppies from group 2 showed significantly lower Apgar score at birth. However, 1 hour later all neonates showed full recovery. Dams subjected to oxytocin infusion showed an increase in blood pressure, hence switching to a normotension status and also presented higher glucose level during parturition. Manipulative obstetric assistance or cesarean section arised neonatal cortisol levels at birth. However, all neonates exhibited significantly lower cortisol concentration after 1 hour of birth. Bitches of group 3 showed significantly higher cortisol level immediatly after whelping. In conclusion, dystocia treated medically by oxytocin infusion resulted in more intense metabolic alterations compared to neonates born under eutocia; oxytocin administration promotes blood pressure enhance, glucose alterations and increase in maternal stress; manipulative obstetric assistance or cesarean section increased neonatal cortisol release at birth.
ASSUNTO(S)
acid-base balance ocitocina cortisol oxytocin neonato canino dystocic parturition canine neonate equilíbrio ácido-base cortisol parto distócico
Documentos Relacionados
- Assistência clínica materna e neonatal às diferentes condições obstétricas em bovinos da raça Holandesa
- Essências florais: medidas da sua influência na vitalidade em seres vivos
- Análise histomorfométrica do útero na espécie canina do nascimento aos seis meses de idade
- Hipertensão arterial na gestação e condições neonatais ao nascimento
- Processos patológicos em linfonodos na espécie canina: revisão de literatura