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Updated: Apr 15, 2026

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
Nonhemodynamic parameters from implantable devices for heart failure risk stratification
1Division of Cardiology, Penn State Hershey Medical Center, Mail Code H047, 500 University Drive, Hershey, PA 17033, USA.
Implantable cardioverter defibrillators (ICDs) monitor vital signs for patient prognoses. Integrating additional data like thoracic impedance can enhance the prognostic value of these devices.
Area of Science:
- Biomedical Engineering
- Cardiology
- Medical Device Technology
Background:
- Implantable devices offer continuous patient monitoring capabilities.
- Implantable cardioverter defibrillators (ICDs) primarily manage heart rhythm disorders.
- Current ICDs collect data on heart rate, arrhythmias, and activity levels.
Purpose of the Study:
- To explore the prognostic information obtainable from implantable devices.
- To investigate the potential of additional parameters for refining prognostic insights.
- To assess the benefits of combining multiple data streams from ICDs.
Main Methods:
- Review of existing literature on implantable device monitoring.
- Analysis of data parameters typically collected by ICDs.
- Conceptual exploration of integrating novel data points.
Main Results:
- ICDs effectively monitor heart rate, arrhythmias, and activity, providing prognostic data.
- Thoracic impedance, heart sounds, and respiratory patterns are identified as valuable additional parameters.
- Combining diverse data streams shows promise for improved prognostic interpretation.
Conclusions:
- Implantable devices, particularly ICDs, are valuable tools for prognostic monitoring.
- Incorporating parameters beyond basic rhythm monitoring can significantly enhance prognostic accuracy.
- A multi-parameter approach to data analysis from implantable devices offers a superior method for patient prognostication.
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