Predictive Associations of Music, Anxiety, and Sedative Exposure on Mechanical Ventilation Weaning Trials.

This was a secondary analysis, not the parent trial's planned test of music, so the outcomes and measures were not designed specifically for weaning. Weaning trials were only recorded after enrollment, so patients already weaning before enrollment could not be fully accounted for. Exact start and stop times were available only for the first trial on the first day, so later weaning patterns were incompletely captured. Patients chose how much music to listen to, so the dose of the intervention varied and may not represent a controlled music treatment. Anxiety was assessed only once per day, and some ratings were missed when patients were too sleepy or sedated. Illness severity was based only on APACHE III scores from the first 24 hours, so it did not reflect changes during ICU stay. The parent study required patients to be awake and alert enough to participate, so results may not apply to more sedated or unstable ICU patients. Patients came from 12 ICUs with different weaning practices and sedation methods, which may have influenced results.

Do not conclude that patient-directed music helps ventilator weaning. Music patients also received usual ICU nursing care and sedative exposure varied, and assignment to music or noise-canceling headphones was not a significant predictor of time to initial weaning trial or duration of weaning trials.