This study is an observational clinical investigation designed to evaluate perioperative lung aeration in adult patients undergoing elective laparoscopic cholecystectomy under general anesthesia. The primary objective is to assess lung status using lung ultrasound in patients aged 18 to 65 years. A total of 80 volunteer participants will be enrolled. Lung aeration will be evaluated using lung ultrasound scoring before and after surgery. Patient demographic characteristics, medical history, intraoperative airway pressure values, and perioperative lung ultrasound scores will be recorded for analysis. This study is conducted solely for research purposes and does not involve any drug intervention. All patients will receive standard perioperative care as determined by their attending anesthesiologist and surgical team, with no deviation from routine clinical practice. Participation is voluntary, and patients may withdraw from the study at any time without affecting their medical care.
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Change in Lung Ultrasound Score (LUS)
Timeframe: Baseline (T0), 30 minutes after pneumoperitoneum (T1), and 30 minutes after desufflation (T2)