This prospective observational study aims to evaluate the relationship between preoperative immune-nutritional status and postoperative sleep quality in women undergoing total abdominal hysterectomy under general anesthesia. Immune-nutritional scores, including the Prognostic Nutritional Index (PNI) and Hemoglobin-Albumin-Lymphocyte-Platelet (HALP) score, will be calculated using routine preoperative blood parameters. Postoperative sleep quality will be assessed using the Richards-Campbell Sleep Questionnaire (RCSQ). Secondary outcomes include postoperative pain scores and patient satisfaction. The study will enroll 60 patients and seeks to determine whether preoperative physiological markers can predict subjective recovery parameters such as sleep and comfort, potentially contributing to personalized perioperative care.

Inclusion Criteria:

• Female patients aged 18-70
• ASA physical status I-III
• Undergoing elective total abdominal hysterectomy under general anesthesia
• Available complete blood count and biochemistry results within 24 hours preoperatively
• Planned to stay at least one night postoperatively
• Sufficient cognitive ability to understand and complete questionnaires
• Provided written informed consent

Exclusion Criteria:

• History of neurological or psychiatric illness
• Diagnosed sleep disorders
• Current use of sedative or hypnotic medications
• Undergoing additional surgical procedures during operation
• Requiring postoperative intensive care
• Operated under spinal or epidural anesthesia

Female participants only. The study population includes women aged 18 to 70 undergoing elective total abdominal hysterectomy under general anesthesia.

The study population consists of female patients aged 18 to 70 years undergoing elective total abdominal hysterectomy under general anesthesia at Haseki Training and Research Hospital. Participants must have available preoperative laboratory data and be able to complete postoperative questionnaires.