Can music improve surgery outcomes? New evidence says yes |

Hospitals are steadily exploring gentler ways to support patients through surgery, especially methods that can work alongside standard anaesthesia without adding extra risks. One approach gaining attention is the use of calming music in the operating theatre. Researchers are studying how certain sounds may influence the body’s stress response even when a person is fully unconscious. Modern anaesthetic drugs are highly effective, yet they can affect recovery time, blood pressure stability and overall comfort. Understanding whether music can ease these demands has become increasingly relevant as science looks for simple and practical tools that make surgical experiences smoother for patients and clinicians alike.

The study on laparoscopic cholecystectomy under total intravenous anaesthesia published in Music and Medicine offers a detailed look at how music may shape the body’s internal behaviour while a patient is sedated. The research found that non lyrical, slow instrumental music, particularly flute and piano pieces with a gentle tempo, was linked to lower propofol use and steadier vital signs. This suggests that the brain continues to register and react to sound even without conscious awareness. Soft rhythms and predictable melodies may communicate a sense of safety to the nervous system, lowering the stress response that typically accompanies surgery. As a result, the body may require less chemical support to remain stable, making music a subtle but meaningful partner to modern anaesthetic care and these steady, low-frequency tones seem to influence autonomic balance, easing sympathetic activation and encouraging parasympathetic calm. Clinicians note that such acoustic patterns can naturally moderate heart rate variability, intraoperative stress load and overall haemodynamic stability in ways patients rarely notice but clearly benefit from.

A key feature of the study was that patients were allowed to choose between two calming instrumental tracks. Many selected a flute piece combining Raga Yaman and Raga Kirwani, both known for their smooth, comforting flow. These choices were not random. Music with a steady beat and warm tone naturally encourages the nervous system to slow down. This matters during surgery because the body reacts to even minor changes in the environment, often showing these reactions through rising blood pressure or increased heart rate. When the music provides a gentle anchor, the autonomic system becomes less jumpy and more balanced.Effects of familiar or preferred music include:

Even under anaesthesia, deeper brain regions continue processing rhythm and melody. These regions help regulate emotional and physical responses, so when they detect a soothing pattern, the body releases fewer stress chemicals and shows fewer abrupt fluctuations. This creates a calmer internal environment, which in turn reduces the need for frequent anaesthetic adjustments. The patient is supported by two layers of care at once: the medical precision of intravenous drugs and the quiet influence of steady, reassuring sound.

One of the standout findings from the research was the difference in propofol consumption. Patients listening to music needed significantly less of the drug to maintain the same depth of anaesthesia as those in the control group. Propofol dosage often increases when the body shows signs of physiological stress, such as spikes in blood pressure or unexpected movements. When those reactions are softened by music, the anaesthetist can maintain appropriate sedation with fewer adjustments.Music acting as a supportive substitute for sedative effects:

The music group also displayed steadier blood pressure readings, particularly between the thirty and forty five minute mark during surgery. This period often involves strong physiological reactions due to surgical stimulation. Yet those who listened to calming music remained more stable, indicating that their internal stress pathways were less reactive. This stability extended to analgesic needs as well.Since certain harmonic structures are known to encourage the release of natural pain relieving chemicals in the brain, the reduced need for fentanyl fits well with the overall pattern. These combined effects highlight that music is not acting as a sedative itself. Instead, it helps the body stay closer to equilibrium, making anaesthetic drugs more efficient and enhancing overall intraoperative balance.

Cortisol, a central stress hormone, provided another important measure of how the body responded to surgery. While levels rose in both groups, the increase was noticeably smaller in patients who listened to music. A lower cortisol rise suggests that the overall stress burden of surgery was reduced, even though all patients experienced the same procedure and anaesthetic technique. This softer hormonal response helps explain why the music group showed a slightly calmer early recovery profile.Awakening from anaesthesia often reflects the internal condition of the body. Patients with lower stress levels tend to regain awareness more smoothly, without excessive agitation or confusion. The study found that those who had music playing during surgery scored more gently on the awakening scale, indicating a more settled return to consciousness. The sound they heard before and during the procedure may have provided a sense of continuity, making the shift between sedation and wakefulness less abrupt.Overall benefits of music in surgery:

Although patient satisfaction scores were similar across the two groups, the physiological changes speak for themselves. Reduced cortisol, lower drug consumption and improved haemodynamic behaviour collectively suggest that calming music creates a more supportive internal environment. The effect is quiet but consistent, showing how simple sensory input can influence the body’s journey through surgery.Disclaimer: This article is for informational purposes only and should not be considered medical advice. Please consult a healthcare professional before making any changes to your diet, medication, or lifestyle.Also Read | Your gut health may be under attack from pesticides and pollutants in food, water and home products