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. 2023 Jun 23:78:100234.
doi: 10.1016/j.clinsp.2023.100234. eCollection 2023.

A longitudinal study of the peripheral and central auditory pathways in individuals with acute lymphoid leukemia

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A longitudinal study of the peripheral and central auditory pathways in individuals with acute lymphoid leukemia

Jéssica Sales Vosgrau et al. Clinics (Sao Paulo). .

Abstract

Objective: To characterize the peripheral and central auditory pathways in individuals with Acute Lymphoid Leukemia (ALL) and compare assessment results before and during chemotherapy.

Method: The study included 17 subjects with ALL, divided into two age groups: 3 to 6 (11 individuals) and 7 to 16 years old (6 individuals). Each subject was evaluated twice (before and 3 to 6 months after chemotherapy treatment) with the following procedures: medical history survey, otoscopy, Pure-Tone Threshold (PTA) and speech audiometry, acoustic immittance measures, Brainstem Auditory Evoked Potentials (BAEP) and Long-Latency Auditory Evoked Potentials (LLAEP).

Results: PTA was normal. Tympanometry was abnormal in the second assessment in 2 individuals aged 3 to 6 years. One subject in each age group had absent ipsilateral acoustic reflexes. In high-frequency audiometry, 1 individual had abnormal results. BAEP was abnormal in 5 (first assessment) and 7 individuals (second assessment) aged 3 to 6 years and 2 (first assessment) and 1 individual (second assessment) aged 7 to 16 years. As for LLAEP, P1 latency was increased in 5 (first assessment) and 7 individuals (second assessment) aged 3 to 6 years.

Conclusion: No hearing loss was identified in the behavioral audiological assessment. BAEP was more affected in the 3-to-6-year-old group, with greater impairment in the lower brainstem in the first and second assessments. In LLAEP, P1 was the most impaired component in children aged 3 to 6 years, and P2 and N2 were so for those 7 to 16 years old, especially in the second assessment.

Keywords: Auditory evoked potentials; Auditory perception; Hearing; Leukemia-lymphoblastic precursor cell lymphoma; Pharmacological treatment.

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Conflict of interest statement

Declaration of Competing Interest The authors declare no conflicts of interest.

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