The Effect of a Music Intervention on Postictal Agitation in Electroconvulsive Therapy Patients

The primary outcome measure is the presence or absence of postictal agitation (PIA). All patients will be screened for PIA using the RASS (Richmond Agitation-Sedation Scale), a 10-point scale, indicating alertness and responsiveness, taking less than 20 seconds to perform. The scale ranges from -5 (deep sedation) to +4 (extreme agitation), with positive scores indicating agitation (higher score is more agitation so worse outcome) relevant for diagnosing PIA. Screening for PIA will be conducted after the first six ECT treatments by a nurse or medical student who will monitor the patient for 30 minutes in the recovery room. PIA is defined as agitation leading to a score of +1 or greater on the RASS during this period. Patients scoring less than +1 will be recorded as having no PIA for that session. Nurses and medical students will receive training on using the RASS scale, documented in the training log and side delegation file.

All patients will be screened for PIA using the RASS (Richmond Agitation-Sedation Scale), a 10-point scale, indicating alertness and responsiveness, taking less than 20 seconds to perform. The scale ranges from -5 (deep sedation) to +4 (extreme agitation), with positive scores indicating agitation (higher score is more agitation so worse outcome) relevant for diagnosing PIA. Patients will screen positive for PIA if the RASS is at least +1. Mild PIA is characterized by a RASS score of +1, while moderate and severe PIA are indicated by scores of ≥ +2. A RASS score of at least +2 is associated with a greater risk of danger to the patient and/or staff.

All patients will be screened for PIA using the RASS (Richmond Agitation-Sedation Scale), a 10-point scale, indicating alertness and responsiveness, taking less than 20 seconds to perform. The scale ranges from -5 (deep sedation) to +4 (extreme agitation), with positive scores indicating agitation (higher score is more agitation so worse outcome) relevant for diagnosing PIA. The duration of PIA will be measured as the time from the highest observed RASS score to a RASS score of zero. A longer duration is longer agitation so a worse outcome. PIA duration is a predictor of retrograde amnesia following ECT, with shorter durations being desirable.

Patients will be screened for pretreatment anxiety using the VAS-A, a validated self-rating measurement ranging from 0 (not at all anxious) to 10 (extremely anxious).

Before each intervention/ECT session, patients will be asked if and how long they listened to music the day before treatment.

Recovery duration will be measured as the total time spent in the recovery room after ECT. The time that the patient is deemed medically ready to be discharged (but has not yet left) will also be noted.

Peri-treatment medication requirement includes all medication used from 24 hours before ECT until leaving the recovery room, with dosage corrected for body weight (mg/kg) for medications such as antipsychotics, benzodiazepines, mood stabilizers, and opioids.

Cognitive impairment will be assessed using the MoCA (Montreal Cognitive Assessment), a scale ranging from 0-30. Lower scores mean more cognitive impairment, so worse outocmes. Anything below 26 is a sign of cognitive impairment. The MoCA will be administered within 7 days before the first ECT treatment (baseline) and during follow-up at 2 and 90 days after the patient's completion of the full ECT course.

Depression severity will be measured before the start of the ECT course and weekly during the course using the HDRS (Hamilton Depression Rating Scale, range 0-52) or the MADRS (Montgomery-Åsberg Depression Rating Scale, range 0-60). For both scales, higher ratings mean more depression so a worse outcome. To avoid overburdening the severly depressed patients in this study with additional questionnaires, both scales will be used in accordance with standard care procedures at the participating centers. The HDRS and MADRS scales are correlated and can be converted between each other, which will be done during the analysis phase of the study.