RESUMO
PURPOSE: To analyze intraocular pressure (IOP) and central corneal thickness (CCT) in newborns during the first 12 h of life. METHODS: Forty-three newborns born by vaginal delivery (VD) and 30 newborns born by cesarean section (CS) were evaluated. IOP and CCT were measured using Tono-Pen and handheld pachymeter, respectively, at both the 5th minute after delivery and at the 12th h of life. RESULTS: The mean IOP for the VD group was significantly higher than that of the CS group at both the 5th minute and 12th h (p =0.042 and p =0.018, respectively). In both groups, the IOP decreased by the 12th h, but the decrease was only significant for the CS group (p =0.020). The decrease in CCT over the 12 h was significant for both groups (p <0.001). In the VD and CS groups, the IOP values of the males were significantly higher than those of the females at the fifth minute only (p =0.024 and p =0.043, respectively). No other values were significantly different between the genders. CONCLUSIONS: Newborn IOP is affected by the mode of delivery and gender. A higher IOP was found in vaginally delivered newborns than in CS newborns for at least 12 h postpartum. CCT showed a significant decline within 12 h. Male newborns have significantly higher IOP values in the first minutes of life.
Assuntos
Cesárea/efeitos adversos , Córnea/anatomia & histologia , Parto Obstétrico/efeitos adversos , Pressão Intraocular/fisiologia , Fatores Sexuais , Cesárea/métodos , Parto Obstétrico/métodos , Feminino , Humanos , Recém-Nascido , Masculino , Gravidez , Estudos Prospectivos , Fatores de Tempo , Tonometria Ocular/métodosRESUMO
ABSTRACT Purpose: To analyze intraocular pressure (IOP) and central corneal thickness (CCT) in newborns during the first 12 h of life. Methods: Forty-three newborns born by vaginal delivery (VD) and 30 newborns born by cesarean section (CS) were evaluated. IOP and CCT were measured using Tono-Pen and handheld pachymeter, respectively, at both the 5th minute after delivery and at the 12th h of life. Results: The mean IOP for the VD group was significantly higher than that of the CS group at both the 5th minute and 12th h (p =0.042 and p =0.018, respectively). In both groups, the IOP decreased by the 12th h, but the decrease was only significant for the CS group (p =0.020). The decrease in CCT over the 12 h was significant for both groups (p <0.001). In the VD and CS groups, the IOP values of the males were significantly higher than those of the females at the fifth minute only (p =0.024 and p =0.043, respectively). No other values were significantly different between the genders. Conclusions: Newborn IOP is affected by the mode of delivery and gender. A higher IOP was found in vaginally delivered newborns than in CS newborns for at least 12 h postpartum. CCT showed a significant decline within 12 h. Male newborns have significantly higher IOP values in the first minutes of life.
RESUMO Objetivos: Analisar a pressão intraocular (IOP) e a espessura corneana central (CCT) em recém-nascidos durante as primeiras 12 horas de vida. Método: Quarenta e três recém-nascidos nascidos por parto vaginal (VD) e 30 recém-nascidos nascidos após cesariana (CS) foram avaliados. IOP e CCT foram medidos com Tono-Pen e Handheld Pachymeter no quinto minuto após o parto e na décima segunda hora de vida. Resultados: A média de IOP para o grupo VD foi significativamente maior do que o grupo CS tanto no quinto minuto quanto na décima segunda hora (p=0,042, p=0,018, respectivamente). Em ambos os grupos, a IOP diminuiu na décima segunda hora, mas a redução foi significativa apenas para o grupo CS (p=0,020). A diminuição da CCT nas doze horas foi significativa para ambos os grupos (p<0,001). Nos grupos VD e CS os valores de IOP dos homens foram significativamente maiores do que das mulheres apenas no quinto minuto (p=0,024 e p=0,043, respectivamente). Outros valores não foram significativamente diferentes entre os sexos. Conclusões: A IOP em recém-nascidos é afetada pela via de parto e pelo sexo. A IOP é maior em recém-nascidos de parto normal durante pelo menos 12 horas. A CCT mostra queda significativa no prazo de 12 horas. Recém-nascidos do sexo masculino têm valores de IOP significativamente mais elevados nos primeiros minutos de vida.