Handgrip Strength and Phase Angle Predict Outcome After Bariatric Surgery.

Area of Science:

• Bariatric Surgery
• Body Composition Analysis
• Metabolic Surgery Outcomes

Background:

• Postoperative weight loss after bariatric surgery exhibits significant interindividual variability.
• Preoperative and postoperative body composition are crucial predictors of bariatric surgery success.
• Investigating preoperative markers can optimize patient selection and outcomes.

Purpose of the Study:

• To evaluate preoperative handgrip strength and phase angle (PhA) as predictors of sustained postoperative weight loss.
• To assess the influence of body composition on postoperative outcomes following bariatric surgery.
• To identify key indicators for predicting bariatric surgery success.

Main Methods:

• A prospective cohort study involving 198 patients undergoing bariatric surgery (sleeve gastrectomy and gastric bypass).
• Bioelectrical impedance analysis and 36-month postoperative follow-up data were collected.
• Analysis focused on correlating preoperative handgrip strength and PhA with weight loss and body composition.

Main Results:

• Preoperative handgrip strength significantly correlated with postoperative body composition up to 24 months.
• Preoperative PhA, gender, size, and body weight significantly influenced postoperative weight loss.
• A preoperative PhA cutoff of 6.0° predicted less than 50% excess weight loss.

Conclusions:

• Preoperative handgrip strength is a reliable predictor of postoperative body composition.
• Preoperative phase angle (PhA) effectively predicts postoperative weight loss after bariatric surgery.
• Further research is needed to explore the role of these parameters in patient preconditioning.