ABSTRACT
Transient evoked otoacoustic emission (TEOAE) is an accepted test for screening of the cochlea function in newborns. In this study 300 newborns was tested using TEOAE, as well as analysing such parameters as birth weight, Apgar scale, bilirubinaemia. The study indicated the tendency of TEOAE to decrease in newborns with low birth weight and low Apgar scores. Hyperbilirubinaemia seems to have an influence on cochlea function monitored by TEOAE, especially if there were simultaneously low Apgar scores. A similar tendency, although slightly stronger, was observed in the preterm newborn group. TEOAE seems to be a good method of recording the negative influence on the cochlea activity such factors as low birth weight and asphyxia. Hyperbilirubinaemia with asphyxia acts upon the cochlea similarly. All these tendencies were observed more strongly in the preterm newborn group. It is concluded that TEOAE analysis demonstrated its utility as a screening test assessing the hearing state in newborns, additionally the associations of cochlea activity was found with a few parameters of delivery disorders.
Subject(s)
Cochlea/physiopathology , Hearing Loss, Sensorineural , Neonatal Screening , Catchment Area, Health , Female , Hearing Loss, Sensorineural/diagnosis , Hearing Loss, Sensorineural/epidemiology , Hearing Loss, Sensorineural/physiopathology , Humans , Infant, Newborn , Obstetric Labor Complications , Otoacoustic Emissions, Spontaneous/physiology , Poland/epidemiology , Pregnancy , Risk FactorsABSTRACT
Based on spiral computer tomography data three dimensional reconstruction of temporal bone have been made. Anatomical details of the middle ear on obtained images as above have been shown. Reviewed own material and literature the technical assumption and potential possibilities of the three dimensional middle ear reconstruction were presented. Emphasised that three dimensional CT is a valuable source of supplementary information on ossicular chain continuity.
Subject(s)
Ear Ossicles/diagnostic imaging , Ear Ossicles/surgery , Ossicular Replacement , Tomography, X-Ray Computed , Ear Ossicles/pathology , Humans , Temporal Bone/surgeryABSTRACT
OBJECTIVES: Transient evoked otoacoustic emission (TEOAE) is accepted as a good and universal test for screening of the cochlea function in newborns. This method is particularly useful in the newborn group with risk-factors of hearing losses. Early identification of the cochlear pathology gives possibility of supplying with hearing aid instrument and rehabilitation. MATERIAL AND METHODS: In this study 300 newborns was tested with TEOAE, besides such parameters as birth mass, Apgar scale, bilirubinemy were analysed. Then the same results of the newborns with hypotrophy consisted of 40 subjects were analysed. RESULTS: The study did not indicate any tendency of changing TEOAE in particular parts within the cochlea in newborns with hypotrophy. Hypotrophy does not seem to influence the cochlea function monitored by TEOAE half-octave band analysis.
