auditory brainstem responses (abr) in hyperbilirubinemic newborns

Authors

m mohammadi from the department of pediatric neurology, children s medical center, tehran, i.r. iran.

mr ashrafi assistant professor

r shabanian general practitioner

abstract

to evaluate the changes of abr values in hyperbilirubinemic newborns, 85 cases with severe jaundice (total bilirubin levels over 16 mg/dl and direct bilirubin less than 2 mg/dl) were selected from those admitted to children&apos;s medical center by simple sampling method. these infants had no other problem except jaundice. abr was taken before treatment in all cases and in some (10 cases) after exchange transfusion or phototherapy as treatment modalities. 41 neonates (48%) had abnormal abr values, such as increased hearing threshold, prolonged latencies of waves i, iii & v (p- value<0.05), prolonged interpeak latencies of i-v & iii-v (p-value<0.05), absence of waves and abnormal wave morphology. these findings could be indicative of both peripheral (8th nerve) and brainstem disturbances. after treatment abrs showed improvement in some aspects, such as latencies of waves i, iii & v (p value<0.05), but not in interpeak latencies (i-iii, iii -v & i-v) and hearing thresholds. in accordance with previous studies, there was no association between serum total bilirubin concentration and abr test results. this could be interpreted as low significance of serum total bilirubin as a criterion for early prediction of bilirubin induced encephalopathy.

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

AUDITORY BRAINSTEM RESPONSES (ABR) IN HYPERBILIRUBINEMIC NEWBORNS

To evaluate the changes of ABR values in hyperbilirubinemic newborns, 85 cases with severe jaundice (total bilirubin levels over 16 mg/dL and direct bilirubin less than 2 mg/dL) were selected from those admitted to Children's Medical Center by simple sampling method. These infants had no other problem except jaundice. ABR was taken before treatment in all cases and in some (10 cases) after...

full text

Abnormal Auditory Brainstem Response (ABR) Findings in a Near-Normal Hearing Child with Noonan Syndrome

Introduction: Noonan syndrome (NS) is a heterogeneous genetic disease that affects many parts of the body. It was named after Dr. Jacqueline Anne Noonan, a paediatric cardiologist.Case Report: We report audiological tests and auditory brainstem response (ABR) findings in a 5-year old Malay boy with NS. Despite showing the marked signs of NS, the child could only produce a few meaningful words. ...

full text

Brainstem auditory evoked responses in brainstem infarction.

Brainstem auditory evoked responses (BAERs) were recorded in 40 patients with clinically definite brainstem infarction, and results were compared to localizations from physical signs and CT scans. The BAER was abnormal in 92% of patients with evidence on physical examination of dysfunction of lateral structures in the pons or midbrain. Normal BAERs were seen with medially-situated or medullary ...

full text

contra-lateral auditory brainstem responses in dyslexia

how to cite this article: akbari m, joghataei mt, poorbakhat a, jenabi ms. contra-lateral auditory brainstem responses in dyslexia. iran j child neurol. autumn 2016; 10(4): 10-15.   abstract objective dyslexia is a neurological dysfunction (also known as a learning disability) that characterized by disability in reading in spite of normal intelligence. bothe genetic and environmental risk facto...

full text

Auditory Brainstem Responses (ABR) changes in children treated with high doses cisplatin.

INTRODUCTION Cisplatin can cause cochlear damage by oxidative stress in hair cells, but there are few studies regarding toxicity in the central auditory pathways. OBJECTIVE To study cisplatin neurotoxicity in the central auditory pathways in children treated with high doses cisplatin for solid malignant tumors. METHODS Thirteen children (Group S) aged 3-19 years who had been treated with ci...

full text

Effect of Umbilical Cord Ferritin Level on Auditory Brainstem Response Threshold in Newborns

Introduction: Iron plays an important role in myelination. Ferritin is a reliable indicator of the tissue iron store and umbilical cord ferritin level reflects the in utero iron stores. Objective is to study the effect of the umbilical cord ferritin level on the ABR recording in the newborn.   Materials and Methods: The study was conducted in a ...

full text

My Resources

Save resource for easier access later


Journal title:
medical journal of islamic republic of iran

جلد ۱۶، شماره ۲، صفحات ۶۳-۶۶

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023