Effect of therapeutic suggestions during general anaesthesia on postoperative pain and opioid use: multicentre randomised controlled trial
| Autor: | Nina Zech, Manuela Moeller, Alexandra Zagler, Thomas Saller, Hartmuth Nowak, Lisa Grause, Sven Asmussen, Katrin Lutz, Ernil Hansen, Tim Rahmel, Corinna Mittler, Katharina Gyarmati, Michael Tryba, Johannes Loeser, Michael Adamzik, Guenther Oprea, Karin Schork |
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| Rok vydání: | 2020 |
| Předmět: |
Adult
Male Adolescent medicine.medical_treatment Anesthesia General law.invention Intraoperative Period Young Adult 03 medical and health sciences 0302 clinical medicine Randomized controlled trial law Germany medicine Humans Pain Management Single-Blind Method General anaesthesia 030212 general & internal medicine Suggestion Adverse effect Music Therapy Aged Pain Measurement Pain Postoperative Intention-to-treat analysis Patient-controlled analgesia business.industry Analgesia Patient-Controlled General Medicine Middle Aged Analgesics Opioid Clinical trial Treatment Outcome Opioid Anesthesia Number needed to treat Female business 030217 neurology & neurosurgery medicine.drug |
| Zdroj: | BMJ. :m4284 |
| ISSN: | 1756-1833 |
| DOI: | 10.1136/bmj.m4284 |
| Popis: | Objective To investigate the effect of therapeutic suggestions played to patients through earphones during surgery on postoperative pain and opioid use. Design Blinded randomised controlled study. Setting Five tertiary care hospitals in Germany. Participants 385 of 400 patients consecutively recruited from January to December 2018 who were to undergo surgery for 1-3 hours under general anaesthesia. In the per protocol analysis 191 patients were included in the intervention group and 194 patients in the control group. Intervention The intervention comprised an audiotape of background music and positive suggestions based on hypnotherapeutic principles, which was played repeatedly for 20 minutes followed by 10 minutes of silence to patients through earphones during general anaesthesia. Patients in the control group were assigned to a blank tape. Main outcome measures The main outcome was dose of opioid administered by patient controlled analgesia or nurse controlled analgesia within the first postoperative 24 hours, based on regular evaluation of pain intensity on a numerical rating scale (range 0-10, with higher scores representing more severe pain). Results Compared with the control group, the intervention group required a significantly (P=0.002) lower opioid dose within 24 hours after surgery, with a median of 4.0 mg (interquartile range 0-8) morphine equivalents versus 5.3 (2-12), and an effect size (Cohen’s d) of 0.36 (95% confidence interval 0.16 to 0.56). The number of patients who needed opioids postoperatively was significantly (P=0.001) reduced in the intervention group: 121 of 191 (63%, 95% confidence interval 45% to 70%) patients in the intervention group versus 155 of 194 (80%, 74% to 85%) in the control group. The number needed to treat to avoid postoperative opioids was 6. Pain scores were consistently and significantly lower in the intervention group within 24 hours after surgery, with an average reduction of 25%. No adverse events were reported. Conclusions Therapeutic suggestions played through earphones during general anaesthesia could provide a safe, feasible, inexpensive, and non-drug technique to reduce postoperative pain and opioid use, with the potential for more general use. Based on the finding of intraoperative perception by a considerable number of patients, surgeons and anaesthetists should be careful about background noise and conversations during surgery. Trial registration German Clinical Trial Register DRKS00013800. |
| Databáze: | OpenAIRE |
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