[Assessment of retrocochlear hearing pathway activity in infants with central nervous system impairment occurring as an effect of perinatal asphyxia].

Introduction: The most often changes in the central nervous system (CNS) occurring as an effect of perinatal asphyxia are found to be hypoxic-ischemic encephalopathy (HIE) in term newborns, peri- (PVH) or intraventricular hemorrhages (IVH) and periventricular leukomalacia (PVL) in preterm neonates. Chronic hypoxia is considered to affect the brainstem in infants, especially nuclei of the hearing pathway are vulnerable to low oxygen level. The aim of the study was to carry out the objective assessment of the retrocochlear hearing pathway activity using ABR in infants with CNS impairment occurring as an effect of perinatal asphyxia, imaged during trans-fontanel ultrasonography.

[Assessment of cochlea activity in a group of newborns with central nervous system impairment as an effect of perinatal asphyxia using click-evoked otoacoustic emissions (CEOAEs)].

During adaptation of newborn to extra-uterine environment dramatic changes in functioning in the inner organs and the entire human body is observed. Complicated or premature birth as well as complicated course of a perinatal period may cause reversible or irreversible damage of various tissues, organs or systems, and, consequently, their dysfunction. The most often changes in the central nervous system (CNS) in newborns occurring as an effect of perinatal asphyxia are found to be ischemic-hypoxic encephalopathy (IHE), periventricular leucomalacia (PVL) and intraventricular hemorrhages (IVH).