Sound in Surgery

Research has shown that even when undergoing surgery under general anaesthetic, people can process sound to some extent. Playing a particular sound system, incorporating binaural beats, has improved patient outcomes including reducing anxiety, pain severity, pain medication requirement and length of hospital stay. This system involves playing two slightly different notes, one to each ear, at the same time; the brain creates the sensation of a third, causing the brain hemispheres to work together and encouraging a relaxed state of mind.

The Sound in Surgery study is being conducted at Avon Orthopaedic Centre by Prof Jeremy Horwood (PI) and Alison Jeffery to examine the acceptability and feasibility of playing the binaural beats based sound system to patients during total hip replacement surgery, to inform the design of a full randomised controlled trial. This work involves conducting focus groups with patients listed for total hip replacement surgery, investigating patients’ views and experiences of using music for pain relief and its use during surgery. In addition, a feasibility trial involving 40 patients is being carried out: 20 patients will be played the binaural beats sound system during surgery and 20 will be played a blank audiofile. Both groups receive the usual general anaesthetic and pain relief medication. The study is funded by North Bristol NHS Trust Small Grants Scheme.

For further information please contact Jeremy Horwood