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Pediatric applications of serial auditory brainstem and middle-latency evoked response recordings
Insights
Serial auditory evoked response testing, including auditory brainstem (ABR) and auditory middle-latency (AMR) responses, effectively monitored auditory system status in children. These bedside assessments aided clinical management across various pediatric conditions.
Area of Science:
- Pediatric Audiology
- Neurophysiology
- Clinical Neurosciences
Background:
- Auditory evoked responses are crucial for assessing auditory pathway function in pediatric populations.
- Serial monitoring is essential for tracking changes in auditory status, especially in critically ill children.
- Bedside auditory evoked response recordings facilitate timely assessment in diverse hospital settings.
Purpose of the Study:
- To evaluate the utility of serial auditory brainstem response (ABR) and auditory middle-latency response (AMR) recordings in pediatric patients.
- To demonstrate the application of these electrophysiological measures in managing diverse clinical conditions.
- To illustrate how auditory evoked responses contribute to medical, surgical, and audiological decision-making.
Main Methods:
- Conducted serial auditory brainstem response (ABR) and auditory middle-latency response (AMR) recordings.
- Performed 40 ABR and 32 AMR assessments bedside in various hospital environments (PICU, NICU, OR).
- Included 12 children (2 weeks to 10 years) with conditions like severe head injury, hydrocephalus, and hyperbilirubinemia.
Main Results:
- Auditory evoked responses successfully monitored peripheral and central auditory system status.
- ABR abnormalities resolved with medical/surgical therapy in some cases (e.g., hydrocephalus).
- Spontaneous reversal of ABR abnormalities was observed in certain conditions (e.g., hyperbilirubinemia).
Conclusions:
- Serial auditory evoked response measures are valuable tools for monitoring auditory function in children.
- These electrophysiological assessments provide critical data for guiding clinical management in pediatric patients.
- The findings highlight the diverse applications and prognostic value of ABR and AMR in pediatric care.
Abstract:
Serial auditory brainstem (ABR) and middle-latency (AMR) response recordings were made for 12 children (8 male, 4 female) ranging in age from 2 weeks to 10 years. A total of 40 ABR and 32 AMR assessments were carried out at bedside in varied hospital environments, including a pediatric intensive care unit (ICU), a neonatal ICU and an operating room. Clinical entities were distributed as follows: acute, severe head injury (5), hydrocephalus (2), meningomyelocele (2), hyperbilirubinemia (1), ototoxic drug overdose (1), severe developmental delay (1). Auditory evoked responses were applied in monitoring peripheral and central auditory system status, and contributed to medical, surgical and audiologic management. Abnormalities of the ABR were reversed in some children, such as those with hydrocephalus, with medical or surgical therapy. In other cases, such as a hyperbilirubinemic child, a marked ABR abnormality apparently reversed spontaneously. We present five cases to illustrate diverse applications of serial auditory evoked response measures in children.