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Related Experiment Video

Updated: Jan 8, 2026

Cutoff Value of Phase Angle by Bioelectrical Impedance Analysis at Admission as a Prognostic Factor in Patients with Acute Heart Failure

Cutoff Value of Phase Angle by Bioelectrical Impedance Analysis at Admission as a Prognostic Factor in Patients with Acute Heart Failure

Published on: June 10, 2025

Association Between the Phase Angle and Function Recovery in Patients With Hip Fractures.

Hironori Unno¹, Takahiro Hasegawa¹, Shinya Takigawa¹

¹Orthopaedics, Iga City General Hospital, Iga, JPN.

|December 15, 2025

Summary

This summary is machine-generated.

The preoperative phase angle, measured by bioelectrical impedance analysis, can predict functional recovery after hip fracture surgery. This metric helps identify undernutrition and sarcopenia impacts on patient outcomes.

Keywords:

bia fim hip fracture nutrition phase angle sarcopenia

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Area of Science:

Geriatric Medicine
Nutritional Science
Orthopedic Surgery

Background:

Hip fractures are common in elderly patients, often accompanied by malnutrition.
Nutritional status significantly impacts clinical care and recovery outcomes for these patients.

Purpose of the Study:

To determine if the preoperative phase angle predicts postoperative functional recovery in hip fracture patients.
To assess the influence of undernutrition on clinical outcomes following hip fracture.

Main Methods:

100 hip fracture patients had serum albumin, skeletal muscle index (SMI) via CT, and phase angle via bioelectrical impedance analysis (BIA) measured on admission.
Functional Independence Measure (FIM) scores and ΔFIM were recorded to assess functional status.
Correlations between phase angle, albumin, SMI, and FIM scores were analyzed.

Main Results:

The phase angle showed positive correlations with serum albumin and SMI.
Both phase angle and serum albumin correlated with postoperative FIM scores and improvement (ΔFIM).
Multiple regression analysis identified the phase angle as the sole significant predictor for FIM score and ΔFIM.

Conclusions:

The preoperative phase angle is a valuable predictor of functional recovery after hip fracture.
Phase angle assessment can identify the negative impacts of undernutrition and sarcopenia on patient outcomes.