Pediatric polysomnography-A review of indications, technical aspects, and interpretation.

Polysomnography is an elaborate diagnostic test composed of numerous data-collecting sensors working concomitantly to aid in the evaluation of varied sleep disorders in all age groups. Polysomnography is the study of choice for the assessment of pediatric sleep-disordered breathing, including obstructive sleep apnea syndrome, central apnea, and hypoventilation disorders, and is used to help determine treatment efficacy. Beyond the purview of snoring and breathing pauses, polysomnography can elucidate the etiology of hypersomnolence, when associated with a multiple sleep latency test, and abnormal movements or events, whether nocturnal seizure or complex parasomnia, when a thorough patient history cannot provide clear answers. This review will highlight the multitudinous indications for pediatric polysomnography and detail its technical aspects by describing the multiple neurophysiologic and respiratory parametric sources. Knowledge of these technical aspects will provide the practitioner with a thoughtful means to understand the limitations and interpretation of polysomnography.