Next Article in Journal
Dietary Gamma-Aminobutyric Acid (GABA) Induces Satiation by Enhancing the Postprandial Activation of Vagal Afferent Nerves
Next Article in Special Issue
The Relationship of Energy Malnutrition, Skeletal Muscle and Physical Functional Performance in Patients with Stable Chronic Obstructive Pulmonary Disease
Previous Article in Journal
Dietary Nitrate Intake Is Associated with Decreased Incidence of Open-Angle Glaucoma: The Rotterdam Study
Previous Article in Special Issue
Development and Validation of Global Leadership Initiative on Malnutrition for Prognostic Prediction in Patients Who Underwent Cardiac Surgery
Article

Preoperative Phase Angle as a Risk Indicator in Cardiac Surgery—A Prospective Observational Study

1
Division of Cardiac Thoracic Vascular Anaesthesia and Intensive Care Medicine, Medical University of Vienna, A-1090 Vienna, Austria
2
Department of Surgery, Medical University of Vienna, A-1090 Vienna, Austria
3
Department of Cardiac Surgery, Medical University of Vienna, A-1090 Vienna, Austria
*
Author to whom correspondence should be addressed.
Academic Editor: Misha D. P. Luyer
Nutrients 2022, 14(12), 2491; https://doi.org/10.3390/nu14122491
Received: 25 May 2022 / Revised: 14 June 2022 / Accepted: 14 June 2022 / Published: 16 June 2022
(This article belongs to the Special Issue Nutrition and Metabolic Risk Factors in Patients)
Background: The phase angle (PhA) can be used for prognostic assessments in critically ill patients. This study describes the perioperative course of PhA and associated risk indicators in a cohort of elective cardiac surgical patients. Methods: The PhA was measured in 168 patients once daily until postoperative day (POD) seven. Patients were split into two groups depending on their median preoperative PhA and analyzed for several clinical outcomes; logistic regression models were used. Results: The PhA decreased from preoperative (6.1° ± 1.9°) to a nadir on POD 2 (3.5° ± 2.5°, mean difference −2.6° (95% CI, −3.0°; −2.1°; p < 0.0001)). Patients with lower preoperative PhA were older (71.0 ± 9.1 vs. 60.9 ± 12.0 years; p < 0.0001) and frailer (3.1 ± 1.3 vs. 2.3 ± 1.1; p < 0.0001), needed more fluids (8388 ± 3168 vs. 7417 ± 2459 mL, p = 0.0287), and stayed longer in the ICU (3.7 ± 4.5 vs. 2.6 ± 3.8 days, p = 0.0182). Preoperative PhA was independently influenced by frailty (OR 0.77; 95% CI 0.61; 0.98; p = 0.0344) and cardiac function (OR 1.85; 95%CI 1.07; 3.19; p = 0.028), whereas the postoperative PhA decline was independently influenced by higher fluid balances (OR 0.86; 95% CI 0.75; 0.99; p = 0.0371) and longer cardiopulmonary bypass times (OR 0.99; 95% CI 0.98; 0.99; p = 0.0344). Conclusion: Perioperative PhA measurement is an easy-to-use bedside method that may critically influence risk evaluation for the outcome of cardiac surgery patients. View Full-Text
Keywords: bioelectrical impedance analysis; cardiac surgery; phase angle bioelectrical impedance analysis; cardiac surgery; phase angle
Show Figures

Graphical abstract

MDPI and ACS Style

Ryz, S.; Nixdorf, L.; Puchinger, J.; Lassnigg, A.; Wiedemann, D.; Bernardi, M.H. Preoperative Phase Angle as a Risk Indicator in Cardiac Surgery—A Prospective Observational Study. Nutrients 2022, 14, 2491. https://doi.org/10.3390/nu14122491

AMA Style

Ryz S, Nixdorf L, Puchinger J, Lassnigg A, Wiedemann D, Bernardi MH. Preoperative Phase Angle as a Risk Indicator in Cardiac Surgery—A Prospective Observational Study. Nutrients. 2022; 14(12):2491. https://doi.org/10.3390/nu14122491

Chicago/Turabian Style

Ryz, Sylvia, Larissa Nixdorf, Jürgen Puchinger, Andrea Lassnigg, Dominik Wiedemann, and Martin H. Bernardi. 2022. "Preoperative Phase Angle as a Risk Indicator in Cardiac Surgery—A Prospective Observational Study" Nutrients 14, no. 12: 2491. https://doi.org/10.3390/nu14122491

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop