Effects of Biofeedback-based Music Program Using a Smart Device Application on Perioperative Sleep Quality

Effects of Biofeedback-based Music Program Using a Smart Device Application on Perioperative Sleep Quality in Patients Undergoing Breast Cancer Surgery: an Open-labeled Randomized Controlled Study

The purpose of this study is to investigate whether the effects of biofeedback-based music programs using a smart device application can improve perioperative sleep quality in patients undergoing breast cancer surgery.

In a biofeedback-based music group, the patient performs an active respiratory intervention session, which induces a slow breathing pattern. If breathing has been slow enough, the automatic mode is activated to provide music based on the patient's own breathing pattern. The investigators will provide biofeedback-based music, which incorporates the patient's respiratory information, while no intervention will be performed in the control group.

Inclusion Criteria:

• Patients undergoing elective breast cancer surgery

Exclusion Criteria:

• Patients' refusal
• Day surgery or urgent surgery
• BMI ≥35
• Neurocognitive impairment, hearing disorder (ex : (dementia, impaired cognitive dysfunction, cerebral infarction, transient cerebral ischemic attack))
• Patients with psychiatric diseases, psychological drug intake
• Pre-existing conditions associated with sleep disorders or drug intake related to sleep