This is a plain English summary of an original research article
Recorded music played before, during or after surgery in adults reduces self-reported post-operative pain and anxiety, compared with usual care. The average effect is equivalent to a reduction in anxiety of 21 percentage points and a 10 percentage point reduction in pain within a few days of surgery.
It is thought that placebo and distraction effects probably play a role, but in this review music still improved pain when used for patients under a general anaesthetic.
Nearly two-thirds of patients experience severe pain after surgery. Anxiety can amplify perceptions of pain and lead to slower recovery. This systematic review included over 90 small-scale trials with a small effect, and it was not possible to blind conscious patients to which intervention they had received. However, despite the caveats, the direction of effect was consistent, and the intervention comes with minimal risks for the patient.
Evaluation of the positive and negative impacts on patients and clinicians could help better clarify the selection, timing and delivery of music. For example, what genre to select and would it be best delivered through headphones and throughout surgery?
Why was this study needed?
The NHS carries out about 11 million surgical procedures annually. These include therapeutic and diagnostic procedures. Acute pain following surgery can affect patients’ quality of life, increase the use of pain-relieving drugs with their side effects, and lengthen hospital stays.
There has been a long-standing interest in music’s potential to improve patient wellbeing around the time of surgery. Hospital teams may play music for the patient, or a music therapist may carry out a defined intervention. Surgical teams sometimes play their own favourite tracks during operations.
This review assessed the impacts of music interventions on postoperative pain and anxiety following general or regional anaesthetic. An earlier systematic review in 2015 was the first to pool data across a range of surgeries for both pain and anxiety, but the focus was on less invasive procedures done under local anaesthesia.
What did this study do?
This systematic review included 92 randomised controlled trials in which music was offered by researchers or music therapists either live or recorded. The 7,385 adults undergoing surgery had an average age of 52 years. Only a quarter of studies included more than 110 patients. Musical styles ranged from relaxing classical music to heavy rock and were often chosen by the patient. Around a fifth of studies used a non-active control intervention, such as headphones without music or with alternative noises.
Most studies evaluating anxiety outcomes used an index of a visual scale and the studies evaluating pain outcomes used a visual scale or numerical rating scale.
The review was well conducted but limited by poor or unclear quality of the underlying trials. Taking measures to ensure people did not know whether they were getting the trial intervention (the music) was not common, and this may have inflated the results. The trials were also substantially different in their patient populations, surgical procedures and types of music intervention making it difficult to pick the target group who might benefit most.
What did it find?
- Overall, patients receiving a music intervention experienced less pain and anxiety up to seven days following surgery compared with usual care or placebo-type interventions (standardised mean difference [SMD] for anxiety ‑0.69, 95% confidence interval [CI] -0.88 to -0.50, 47 trials, 3,928 patients; SMD for pain ‑0.50, 95% confidence interval [CI] -0.66 to -0.34, 42 trials, 3,272 patients).
- Music was effective for decreasing anxiety when used before, during or after surgery. There was a larger difference in post-operative anxiety between intervention and control groups when music was played before surgery (SMD ‑1.10, 95% CI ‑1.53 to ‑0.66; 13 trials) than after surgery (SMD ‑0.66, 95% CI ‑1.07 to ‑0.25; 10 trials).
- Music remained effective for pain when used during general anaesthesia (SMD ‑0.41, 95% CI ‑0.64 to ‑0.18; 5 trials).
- When analysing the higher quality trials, patients receiving a music intervention still had less pain and anxiety than people in the control groups (SMD for anxiety ‑0.61, 95% confidence interval [CI] -0.94 to -0.29, 16 trials, 1,788 patients; SMD for pain ‑0.34, 95% confidence interval [CI] -0.55 to -0.13, 15 trials, 1,454 patients).
What does current guidance say on this issue?
There is no current UK guidance for surgeons or anaesthetists on music and surgery. The Faculty of Pain Medicine’s Core Standards for Pain Management Services (2015) does not mention music.
The British Anaesthetic and Recovery Nurses Association includes in its Standards of Practice (2012) that the nurse will ensure that the patient is reasonably pain-free by means of analgesia, distraction therapy and comfort measures. The environment should be planned to reduce anxiety including the use of music.
What are the implications?
NICE is developing a guideline on perioperative care in adults and will cover support for patients before, during and after operations, including pain management services.
More practical evaluations of how to integrate music into usual practice might answer residual concerns and help refine the intervention.
At first glance, music seems a cheap and safe intervention which might suit a larger evaluation.
Citation and Funding
Kühlmann AYR, de Rooij A, Kroese LF, et al. Meta-analysis evaluating music interventions for anxiety and pain in surgery. Br J Surg. 2018;105(7):773-83.
This project was funded by Stichting Coolsingel and Stichting Swart-van Essen in The Netherlands.
FPM. Core standards for pain management services in the UK. London: Faculty of Pain Medicine of the Royal College of Anaesthetists; 2015.
NHS website. Having an operation (surgery). London: Department of Health and Social Care; updated 2018.
NICE. Guideline scope: perioperative care in adults (final). London: National Institute for Health and Care Excellence; 2018
Weldon S, Korkiakangas T, Bezemer J, Kneebone R. Music and communication in the operating theatre. J Adv Nurs. 2015;71(12):2763-74.
Produced by the University of Southampton and Bazian on behalf of NIHR through the NIHR Dissemination Centre