Monothermal air caloric test in children

Area of Science:

• Otolaryngology
• Pediatric Neurology
• Vestibular System Diagnostics

Background:

• Accurate assessment of labyrinthine function is crucial for diagnosing pediatric vestibular disorders.
• Bithermal air caloric testing (BAT) is the gold standard, but monothermal tests (MCAT, MWAT) are simpler alternatives.
• Limited data exists on the comparative efficacy of monothermal versus bithermal caloric tests in children.

Purpose of the Study:

• To compare the efficacy of bithermal air caloric testing (BAT) with monothermal cold air caloric testing (MCAT) and monothermal warm air caloric testing (MWAT) in identifying labyrinthine function anomalies in children.
• To establish normative confidence intervals for MCAT and MWAT in healthy children.
• To evaluate the diagnostic performance of MWAT in specific pediatric vestibular conditions.

Main Methods:

• Normative data for MCAT and MWAT were established in 40 healthy children (aged 6-14 years).
• BAT, MCAT, and MWAT results were compared in 46 children (aged 6-14 years) with diagnosed labyrinthine diseases.
• Sensitivity and specificity of MWAT were calculated against BAT using different probability thresholds.

Main Results:

• MCAT alone is not recommended for evaluating labyrinthine function in pediatric patients with vertigo.
• MWAT demonstrated good sensitivity (78-83%) and specificity (90-92.5%) compared to BAT.
• MWAT's diagnostic accuracy varied with the underlying cause of vertigo, impacting false negative rates.
• MWAT showed potential utility for diagnosing vertigo in vestibular neuritis or endogenous diseases.

Conclusions:

• MWAT cannot fully replace BAT for comprehensive labyrinthine function assessment in children.
• BAT remains the preferred method for evaluating pediatric vestibular disorders.
• MWAT may serve as a useful adjunct or alternative in specific clinical scenarios, such as suspected vestibular neuritis or endogenous conditions.