This observational study aims to investigate the impact of body composition on the absorption, distribution, and metabolism of anesthetic drugs, as well as on the incidence of complications in overweight and obese patients. The primary research question is whether specific body composition parameters in this population influence drug pharmacokinetics and complication rates. By integrating pharmacokinetic parameters, adverse drug reactions (ADRs), and clinical complications, the study will analyze variations in sufentanil kinetics under different body composition conditions. Under the guidance of research personnel, participants will undergo non-invasive body composition assessment using the nBody S10 analyzer. Key metrics collected will include, but are not limited to, mineral content, muscle mass, lean body mass (LBM), total body weight, and body fat percentage (BFP).
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Plasma Drug Concentration
Timeframe: Perioperative
Perioperative Complication Rate
Timeframe: Up to 30 days postoperative
Fat percentage (%)
Timeframe: Baseline and Postoperative Day 1
Weight
Timeframe: Baseline and Postoperative Day 1
Waist circumference
Timeframe: Baseline and Postoperative Day 1