[Target-controlled intravenous anesthesia during laparoscopic surgery for obesity]

Area of Science:

• Anesthesiology
• Bariatric Surgery
• Pharmacokinetics

Background:

• Targeted controlled infusion (TCI) offers precise anesthetic titration for improved patient outcomes.
• Accurate anesthetic delivery is crucial for induction and predicting emergence in specific patient populations.

Purpose of the Study:

• To assess the feasibility of using TCI for anesthetic management in morbidly obese patients undergoing laparoscopic bariatric surgery.

Main Methods:

• A prospective study included 30 morbidly obese patients (mean BMI 49.31 kg/m²).
• Anesthetic protocol combined propofol (hypnotic) and remifentanil (opioid) using TCI with Schnider and Minto models.
• Hemodynamic parameters and recovery times were monitored throughout the procedure.

Main Results:

• TCI induction facilitated good laryngoscopy conditions, with no hypertensive peaks or desaturation.
• Hemodynamic stability was achieved in 79% of patients during induction.
• Recovery was faster in patients with BMI < 49 kg/m² (11 min) compared to those with BMI > 49 kg/m² (23 min), with distinct target concentrations observed.

Conclusions:

• TCI is a feasible and safe anesthetic technique for morbidly obese patients undergoing laparoscopic surgery.
• Anesthetic management and recovery profiles differ based on BMI, necessitating tailored TCI protocols.
• Further research is needed to optimize TCI parameters for extremely obese patients to ensure consistent recovery outcomes.