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Published on: August 1, 2019
A Randomized Controlled Trial Evaluating the Use of a Multimedia Video to Improve Consent in Patients Undergoing
Avelyn Wong1, Taylor Hodge2, Helen C McNamara1
1Endosurgery Department, Mercy Hospital for Women (Wong, Hodge, McNamara, Readman, Karmakar, and Ellett), Heidelberg VIC, Australia; Royal Women's Hospital (Wong and McNamara), Parkville VIC Australia.
Study Objective:
To evaluate whether a supplementary multimedia video improves surgery-related knowledge in patients undergoing total laparoscopic hysterectomy for benign indications. Secondary outcomes included anxiety and satisfaction levels.
Design:
Randomized controlled trial.
Setting:
A tertiary teaching hospital in Melbourne, Australia.
Patients:
Patients on the surgical waitlist for a total laparoscopic hysterectomy (TLH) for a benign indication, aged 18 years or above, and English speaking.
Interventions:
An 11-minute multimedia educational video regarding TLH.
Measurements:
Patient comprehension of the surgery was measured by knowledge scores in a 14-point TLH knowledge questionnaire. This knowledge questionnaire was administered at 3 separate time points: baseline (T1) upon study entry, post-intervention (T2), and 4 weeks post-intervention (T3). The primary outcome was knowledge scores at T2 following randomization and intervention.
Main Results:
43 patients were randomized from July 2022 to December 2023: 21 patients in the control arm and 22 patients in the video arm. There were no significant differences in baseline patient characteristics between groups. At baseline (T1), the median score on the TLH knowledge questionnaire was equal for both groups at 5.0. Following the intervention at T2, the video group scored significantly higher than the control group (median score of 10.0 vs. 8.0, p <.001). At 4 weeks (T3), knowledge scores declined in both groups but remained significantly above baseline in the video group. Anxiety levels assessed using the 6-item Spielberger State-Trait Anxiety Inventory were not significantly different between groups.
Conclusion:
Our study demonstrates that the use of a supplementary multimedia video improves informed consent for patients planned to undergo a total laparoscopic hysterectomy reflected in increased knowledge of the procedure, without increasing patient anxiety levels.
Clinical Trial Registration:
The trial was prospectively registered with the Australian New Zealand Clinical trial registry ACTRN12621001496808 at ANZCTR.org.au https://www.anzctr.org.au/Trial/Registration/TrialReview.aspx?id=382805.
