Clinical Application of Phase Angle and BIVA Z-Score Analyses in Patients Admitted to an Emergency Department with Acute Heart Failure
June 30th, 2023
In this protocol, we explain how to obtain and interpret phase angle values and bioelectrical impedance vectorial analysis (BIVA) Z-score obtained by bioelectrical impedance in patients with acute heart failure admitted to the Emergency Department and their clinical applicability as a predictive marker for the prognosis of a 90-day event.
The scope of this research is to demonstrate the clinical applicability of the phase angle by bioelectrical impedance analysis and C-corp analysis within the emergency department, and how phase angle can be a predictive marker for death or readmission at 90 days after discharge. Recent research has been focused on studying the role of face angle congestion and reduced body cell mass by biological appearance, bacteria analysis as predictors of poor prognosis in patients with acute heart failure. We have found that the detection of subclinical congestion by bioelectrical impedance bacteria analysis has been predicting outcomes such as mortality, readmissions, and unplanned emergency department visits.
Having a quick, accurate and reliable method to assess congestion status and estimate body cell mass at the bedside can aid physicians in making medical decisions to improve a patient's prognosis. Bioelectrical impedance spectral analysis C score can be used to assess congestion and detect changes in nutritional and nutritional status in patients with acute and current heart failure during hospitalization. It can compliment other diagnostic tests and serve as a monitoring tool.
Begin by removing the shoe and sock from the patient's right foot. Also remove all metal objects in contact with the patient's skin, such as bracelets, watches, rings, and chains. Position the patient's supine or semi fowler position with their legs and arms spread at approximately 45 degrees.
To measure BIA, clean the surfaces using a 70%alcohol pad and allow them to dry completely before placing the electrodes. Download the BIVA tolerance software by Piccoli. Open the reference population sheet.
Copy the appropriate reference population based on the patient's characteristics and paste it in the first yellow row. Click on the Z-score sheet. Insert the reference population and enter the medical record number of each patient into the subject ID field.
Next, input a number between one and 10 in the group code field. Insert the resistance value obtained with BIA and adjust it by height and meters into the resistance divided by height, subject field, and the reactance value into the reactance divided by height subject field. Then input one in the drawing option field to generate a plot.
Navigate to the spreadsheet program menu. Select the add-ins tab and click the calculate button. Click on the Z graph sheet within the spreadsheet program.
Navigate to the add-ins tab. Click the new graph button. Then proceed with conducting BIVA Z-score and phase angle analyses.
View the full transcript and gain access to thousands of scientific videos
Overview
This protocol outlines the use of bioelectrical impedance analysis (BIA) to assess phase angle values and Z-scores in patients with acute heart failure. It highlights the clinical relevance of these measurements as predictive markers for 90-day outcomes.
Key Study Components
Area of Science
- Bioelectrical impedance analysis
- Acute heart failure
- Clinical prognostics
Background
- Phase angle and body cell mass are important indicators of patient health.
- Subclinical congestion can be detected using bioelectrical impedance.
- Recent studies link phase angle to mortality and readmission rates.
- Accurate bedside assessments can enhance clinical decision-making.
Purpose of Study
- To evaluate the clinical applicability of phase angle in acute heart failure.
- To determine its predictive value for 90-day mortality and readmissions.
- To establish a reliable method for assessing patient status in emergency settings.
Methods Used
- Patients are prepared by removing footwear and metal objects.
- Electrodes are placed after cleaning the skin with alcohol.
- BIVA software is utilized to analyze impedance data.
- Resistance and reactance values are entered to calculate Z-scores.
Main Results
- Phase angle measurements correlate with patient outcomes.
- Bioelectrical impedance can predict readmissions and mortality.
- Quick assessments can guide treatment decisions effectively.
- Findings support the integration of BIA in clinical practice.
Conclusions
- Phase angle is a valuable prognostic tool in acute heart failure.
- Bioelectrical impedance analysis enhances patient monitoring.
- Further research is needed to standardize its use in emergency departments.
