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Effects of adverse perinatal events on hearing. 1994

M S Razi, and V K Das
Centre for Audiology, Education of the Deaf and Speech Pathology, University of Manchester, UK.

The hearing sensitivity for frequencies 8 kHz through to 18 kHz was compared between children with adverse perinatal factors (study group) and children without adverse perinatal factors (control group). Children in both groups had hearing at levels of 20 dB HL or better in the frequency range between 250 Hz to 8 kHz with normal middle ear pressure. High frequency hearing tests showed that the mean high frequency hearing threshold levels were worse in the study group. Statistical analysis showed significant differences in hearing levels at and above 12 kHz frequencies between the study and control groups. The hearing levels were found to be more significantly affected in females as compared to males, indicating that the high frequency hearing of females was more vulnerable to damage. The results indicate that adverse perinatal events are associated with raised high frequency thresholds in both sexes, especially in females.

UI MeSH Term Description Entries
D007230 Infant, Low Birth Weight An infant having a birth weight of 2500 gm. (5.5 lb.) or less but INFANT, VERY LOW BIRTH WEIGHT is available for infants having a birth weight of 1500 grams (3.3 lb.) or less. Low Birth Weight,Low-Birth-Weight Infant,Birth Weight, Low,Birth Weights, Low,Infant, Low-Birth-Weight,Infants, Low-Birth-Weight,Low Birth Weight Infant,Low Birth Weights,Low-Birth-Weight Infants
D007231 Infant, Newborn An infant during the first 28 days after birth. Neonate,Newborns,Infants, Newborn,Neonates,Newborn,Newborn Infant,Newborn Infants
D007232 Infant, Newborn, Diseases Diseases of newborn infants present at birth (congenital) or developing within the first month of birth. It does not include hereditary diseases not manifesting at birth or within the first 30 days of life nor does it include inborn errors of metabolism. Both HEREDITARY DISEASES and METABOLISM, INBORN ERRORS are available as general concepts. Neonatal Diseases,Disease, Neonatal,Diseases, Neonatal,Neonatal Disease
D007234 Infant, Premature A human infant born before 37 weeks of GESTATION. Neonatal Prematurity,Premature Infants,Preterm Infants,Infant, Preterm,Infants, Premature,Infants, Preterm,Premature Infant,Prematurity, Neonatal,Preterm Infant
D007235 Infant, Premature, Diseases Diseases that occur in PREMATURE INFANTS.
D008297 Male Males
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children
D005260 Female Females
D006316 Hearing Loss, High-Frequency Hearing loss in frequencies above 1000 hertz. Hearing Loss, High Frequency,High-Frequency Hearing Loss
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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