Incidence of serious adverse events during nocturnal polysomnography

The purpose of the study was to verify whether minimal concern is warranted in regard to serious adverse effects in the sleep laboratory.

A prospective multicenter study

Three scoring teams for 17 sleep laboratories.

Reports of adverse events occurring during polysomnography or identified upon scoring a study were collected over an 18-month time period. Incidence of mortality and adverse events were evaluated using a binomial distribution based on the Bernoulli process.

Of 16,084 studies, the mortality rate during or 2 weeks after an adverse event, as noted, was 0.006%, and the overall rate of adverse events was 0.35%.

Adverse event rates are low; however, procedures for handling medical emergencies or adverse events during or after polysomnography are prudent, and those studies performed for research should include preparedness for the possibility of adverse events.