Preoperative Sleep Quality and Postoperative Outcomes in Breast Surgery

Summary

Sleep quality is a key physiological factor influencing immune function, inflammatory response, and pain perception. This prospective observational study aims to evaluate whether preoperative sleep quality predicts postoperative inflammation, pain severity, and analgesic consumption in patients undergoing elective breast cancer surgery. Preoperative sleep quality will be assessed using the Pittsburgh Sleep Quality Index (PSQI). Systemic inflammatory response will be evaluated using the Systemic Immune-Inflammation Index (SII), calculated from routine hematological parameters. Postoperative pain will be assessed using the Visual Analog Scale (VAS), and analgesic consumption will be recorded within the first 24 hours. The study aims to determine whether poor sleep quality is associated with increased inflammatory response, higher pain scores, and greater analgesic requirement.

Eligibility

Inclusion Criteria:

* Female patients aged 18 to 70 years
* Scheduled for elective breast cancer surgery
* American Society of Anesthesiologists (ASA) physical status I to III
* Able to understand and complete the Pittsburgh Sleep Quality Index (PSQI)
* Willing to participate in the study
* Provided written informed consent

Exclusion Criteria:

* Active infection
* History of chronic inflammatory disease or autoimmune disease
* Use of steroids or immunosuppressive drugs within the past 6 months
* Known diagnosis of obstructive sleep apnea syndrome
* Severe cognitive impairment preventing completion of the questionnaire
* Planned emergency surgery
* Refusal to participate or failure to provide informed consent

Conditions4

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