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Deana C, Gunst J, De Rosa S, Umbrello M, Danielis M, Biasucci DG, Piani T, Cotoia A, Molfino A, Vetrugno L. Bioimpedance-assessed muscle wasting and its relation to nutritional intake during the first week of ICU: a pre-planned secondary analysis of Nutriti Study. Ann Intensive Care 2024; 14:29. [PMID: 38367198 PMCID: PMC10874356 DOI: 10.1186/s13613-024-01262-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Accepted: 02/12/2024] [Indexed: 02/19/2024] Open
Abstract
BACKGROUND Muscle mass evaluation in ICU is crucial since its loss is related with long term complications, including physical impairment. However, quantifying muscle wasting with available bedside tools (ultrasound and bioimpedance analysis) must be more primarily understood. Bioimpedance analysis (BIA) provides estimates of muscle mass and phase angle (PA). The primary aim of this study was to evaluate muscle mass changes with bioimpedance analysis during the first 7 days after ICU admission. Secondary aims searched for correlations between muscular loss and caloric and protein debt. METHODS Patients with an expected ICU-stay ≥ 72 h and the need for artificial nutritional support were evaluated for study inclusion. BIA evaluation of muscle mass and phase angle were performed at ICU admission and after 7 days. Considering the difference between ideal caloric and protein targets, with adequate nutritional macronutrients delivered, we calculated the caloric and protein debt. We analyzed the potential correlation between caloric and protein debt and changes in muscle mass and phase angle. RESULTS 72 patients from September 1st to October 30th, 2019 and from August 1st to October 30th, 2021 were included in the final statistical analysis. Median age was 68 [59-77] years, mainly men (72%) admitted due to respiratory failure (25%), and requiring invasive mechanical ventilation for 7 [4-10] days. Median ICU stay was 8 [6-12] days. Bioimpedance data at ICU admission and after 7 days showed that MM and PA resulted significantly reduced after 7 days of critically illness, 34.3 kg vs 30.6 kg (p < 0.0001) and 4.90° vs 4.35° (p = 0.0004) respectively. Mean muscle loss was 3.84 ± 6.7 kg, accounting for 8.4% [1-14] MM reduction. Correlation between caloric debt (r = 0.14, p = 0.13) and protein debt (r = 0.18, p = 0.13) with change in MM was absent. Similarly, no correlation was found between caloric debt (r = -0.057, p = 0.631) and protein debt (r = -0.095, p = 0.424) with changes in PA. CONCLUSIONS bioimpedance analysis demonstrated that muscle mass and phase angle were significantly lower after 7 days in ICU. The total amount of calories and proteins does not correlate with changes in muscle mass and phase angle.
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Affiliation(s)
- Cristian Deana
- Anesthesia and Intensive Care 1, Department of Anesthesia and Intensive Care, Health Integrated Agency of Friuli Centrale, Piazzale S. M. Della Misericordia 15, 33100, Udine, Italy.
| | - Jan Gunst
- Laboratory of Intensive-Care Medicine, Department of Cellular and Molecular Medicine, Louvain, Belgium
- Department of Intensive Care Medicine, University Hospitals Leuven, Louvain, Belgium
| | - Silvia De Rosa
- Centre for Medical Sciences - CISMed, University of Trento, Trento, Italy
- Anesthesia and Intensive Care, Santa Chiara Regional Hospital, APSS Trento, Trento, Italy
| | - Michele Umbrello
- Department of Intensive Care and Anaesthesia, ASST Ovest Milanese, Legnano Hospital, Milan, Italy
| | - Matteo Danielis
- Laboratory of Studies and Evidence Based Nursing, Department of Cardiac, Vascular Sciences and Public Health, University of Padua, ThoracicPadua, Italy
| | - Daniele Guerino Biasucci
- Department of Clinical Science and Translational Medicine, 'Tor Vergata' University of Rome, Rome, Italy
| | - Tommaso Piani
- Health Professions Staff, Health Integrated Agency of Friuli Centrale, Udine, Italy
| | - Antonella Cotoia
- Department of Medical and Surgical Sciences, Anesthesia and Intensive Care Unit, Policlinico Riuniti Foggia, University of Foggia, Foggia, Italy
| | - Alessio Molfino
- Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Luigi Vetrugno
- Department of Medical, Oral and Biotechnological Sciences, University of Chieti-Pescara, Chieti, Italy
- Department of Anesthesiology, Critical Care Medicine and Emergency, SS. Annunziata Hospital, Chieti, Italy
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2
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Cleymaet R, D’Hondt M, Scheinok T, Malbrain L, De Laet I, Schoonheydt K, Dits H, Van Regenmortel N, Mekeirele M, Cordemans C, Minini A, Severgnini P, Dabrowski W, Wong A, Malbrain MLNG. Comparison of Bioelectrical Impedance Analysis (BIA)-Derived Parameters in Healthy Volunteers and Critically Ill Patients. Life (Basel) 2023; 14:27. [PMID: 38255643 PMCID: PMC10821189 DOI: 10.3390/life14010027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 11/21/2023] [Accepted: 12/20/2023] [Indexed: 01/24/2024] Open
Abstract
OBJECTIVE To compare bioelectrical impedance analysis (BIA)-derived parameters in healthy volunteers and critically ill patients and to assess its prognostic value in an ICU patient cohort. DESIGN Retrospective, observational data analysis. SETTING Single centre, tertiary-level ICU (Ziekenhuis Netwerk Antwerpen, ZNA Stuivenberg Hospital). PATIENTS 101 patients and 101 healthy subjects, participants of International Fluid Academy Days. MEASUREMENTS AND MAIN RESULTS Compared to healthy volunteers, both male and female ICU patients had significantly higher values for total body water (TBW), extracellular water (ECW), extracellular fluid (ECF), plasma, and interstitial fluid volumes. The phase angle was significantly lower and the malnutrition index was significantly higher in ICU patients, regardless of gender. Non-survivors in the ICU had significantly higher extracellular water content (ECW, 50.7 ± 5.1 vs. 48.9 ± 4.3%, p = 0.047) and accordingly significantly lower intracellular water (ICW, 49.2 ± 5.1 vs. 51.1 ± 4.3%, p = 0.047). The malnutrition index was also significantly higher in non-survivors compared to survivors (0.94 ± 0.17 vs. 0.87 ± 0.16, p = 0.048), as was the capillary leak index (ECW/ICW). CONCLUSIONS Compared to healthy volunteers, this study observed a higher malnutrition index and TBW in ICU patients with an accumulation of fluids in the extracellular compartment. ICU non-survivors showed similar results, indicating that ICU patients and a fortiori non-survivors are generally overhydrated, with increased TBW and ECW, and more undernourished, as indicated by a higher malnutrition index.
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Affiliation(s)
- Robbert Cleymaet
- Department of Oromaxillofacial and Plastic Surgery, Ghent University Hospital, 9000 Ghent, Belgium
| | - Marvin D’Hondt
- Department of Oromaxillofacial and Plastic Surgery, Ghent University Hospital, 9000 Ghent, Belgium
| | - Thomas Scheinok
- Department of Neurology, University Hospital Brussels (UZB), 1090 Jette, Belgium
| | - Luca Malbrain
- University School of Medicine, Katholieke Universiteit Leuven (KUL), 3000 Leuven, Belgium
| | - Inneke De Laet
- Department of Intensive Care Medicine, Ziekenhuis Netwerk Antwerpen, ZNA Stuivenberg, 2000 Antwerp, Belgium
| | - Karen Schoonheydt
- Department of Intensive Care Medicine, Ziekenhuis Netwerk Antwerpen, ZNA Stuivenberg, 2000 Antwerp, Belgium
| | - Hilde Dits
- Department of Intensive Care Medicine, Ziekenhuis Netwerk Antwerpen, ZNA Stuivenberg, 2000 Antwerp, Belgium
| | - Niels Van Regenmortel
- Department of Intensive Care Medicine, Ziekenhuis Netwerk Antwerpen, ZNA Stuivenberg, 2000 Antwerp, Belgium
| | - Michael Mekeirele
- Department of Intensive Care Medicine, University Hospital Brussels (UZB), 1090 Jette, Belgium
- Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel (VUB), 1090 Jette, Belgium
| | - Colin Cordemans
- Department of Intensive Care, AZ Sint-Maria Hospital, 1500 Halle, Belgium;
| | - Andrea Minini
- Department of Intensive Care Medicine, University Hospital Brussels (UZB), 1090 Jette, Belgium
- School of Anaesthesia and Intensive Care, Dipartimento di Biotecnologie e Scienze della Vita, Insubria University, 21100 Varese, Italy;
| | - Paolo Severgnini
- School of Anaesthesia and Intensive Care, Dipartimento di Biotecnologie e Scienze della Vita, Insubria University, 21100 Varese, Italy;
- Department of Anestesia e Rianimazione Cardiologica, ASST dei Sette Laghi, Ospedale di Circolo e Fondazione Macchi, 21100 Varese, Italy
| | - Wojciech Dabrowski
- First Department of Anaesthesiology and Intensive Therapy, Medical University Lublin, 20-954 Lublin, Poland
| | - Adrian Wong
- Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel (VUB), 1090 Jette, Belgium
- Department of Intensive Care Medicine and Anaesthesia, King’s College Hospital, Denmark Hill, London SE5 9RS, UK
| | - Manu L. N. G. Malbrain
- First Department of Anaesthesiology and Intensive Therapy, Medical University Lublin, 20-954 Lublin, Poland
- International Fluid Academy, 3360 Lovenjoel, Belgium
- Medaman, Medical Data Management, 2440 Geel, Belgium
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Emran S, Jokinen N, Laitinen K, Lappalainen R, Myllymaa S. Novel 3D printed probe for bioimpedance spectroscopic measurement of oral mucosa: design and testing with ex vivo porcine oral tissues. MEASUREMENT SCIENCE AND TECHNOLOGY 2023; 34:095704. [DOI: 10.1088/1361-6501/acd658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Abstract
Three-dimensional (3D) printing has a high potential in various biomedical applications. We hypothesize that 3D printing could be a viable option to construct novel bioimpedance spectroscopic (BIS) sensors suitable for electrochemical characterization of oral mucosal tissues. Previous BIS studies have relied on hand-made probes possessing significant limitations related to their single patient disposable use, large inter-probe differences, and weak reproducibility of measurement. There is also uncertainty related to the effect of varying loading pressure between the probe and biological tissue. Here, we introduce three differently sized rectangular shaped 3D printed probes and test those using a four-terminal measurement principle on various porcine oral tissue samples. We find that constructing a fully 3D printed probe is a challenging task, prone to issues relating to short-circuiting or electrochemical corrosion. However, our final prototype version, constructed with silver-coated copper electrodes, showed favorable characteristics in BIS experiments. All three differently sized probes were able to differentiate between different tissue types with excellent reproducibility. The effect of loading pressure was found to be almost negligible when using small- and medium-sized probes. However, further studies are needed to measure tissues with uneven surfaces, such as palatinum, and to avoid manual or (electro)chemical surface-finishing steps.
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Benes J, Kasperek J, Smekalova O, Tegl V, Kletecka J, Zatloukal J. Individualizing Fluid Management in Patients with Acute Respiratory Distress Syndrome and with Reduced Lung Tissue Due to Surgery—A Narrative Review. J Pers Med 2023; 13:jpm13030486. [PMID: 36983668 PMCID: PMC10056120 DOI: 10.3390/jpm13030486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 02/28/2023] [Accepted: 03/03/2023] [Indexed: 03/11/2023] Open
Abstract
Fluids are the cornerstone of therapy in all critically ill patients. During the last decades, we have made many steps to get fluid therapy personalized and based on individual needs. In patients with lung involvement—acute respiratory distress syndrome—finding the right amount of fluids after lung surgery may be extremely important because lung tissue is one of the most vulnerable to fluid accumulation. In the current narrative review, we focus on the actual perspectives of fluid therapy with the aim of showing the possibilities to tailor the treatment to a patient’s individual needs using fluid responsiveness parameters and other therapeutic modalities.
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Affiliation(s)
- Jan Benes
- Department of Anesthesiology and Intensive Care Medicine, Faculty of Medicine in Plzen, Charles University, 32300 Plzen, Czech Republic
- Department of Anesthesiology and Intensive Care Medicine, University Hospital in Plzen, 32300 Plzeň, Czech Republic
- Biomedical Centre, Faculty of Medicine in Plzen, Charles University, 32300 Plzen, Czech Republic
- Correspondence:
| | - Jiri Kasperek
- Department of Anesthesiology and Intensive Care Medicine, Faculty of Medicine in Plzen, Charles University, 32300 Plzen, Czech Republic
- Fachkrankenhaus Coswig GmbH, Zentrum für Pneumologie, Allergologie, Beatmungsmedizin, Thoraxchirurgie, 01640 Coswig, Germany
| | - Olga Smekalova
- Department of Anesthesiology and Intensive Care Medicine, Faculty of Medicine in Plzen, Charles University, 32300 Plzen, Czech Republic
- Department of Anesthesiology and Intensive Care Medicine, University Hospital in Plzen, 32300 Plzeň, Czech Republic
| | - Vaclav Tegl
- Department of Anesthesiology and Intensive Care Medicine, Faculty of Medicine in Plzen, Charles University, 32300 Plzen, Czech Republic
- Department of Anesthesiology and Intensive Care Medicine, University Hospital in Plzen, 32300 Plzeň, Czech Republic
- Biomedical Centre, Faculty of Medicine in Plzen, Charles University, 32300 Plzen, Czech Republic
| | - Jakub Kletecka
- Department of Anesthesiology and Intensive Care Medicine, Faculty of Medicine in Plzen, Charles University, 32300 Plzen, Czech Republic
- Department of Anesthesiology and Intensive Care Medicine, University Hospital in Plzen, 32300 Plzeň, Czech Republic
| | - Jan Zatloukal
- Department of Anesthesiology and Intensive Care Medicine, Faculty of Medicine in Plzen, Charles University, 32300 Plzen, Czech Republic
- Department of Anesthesiology and Intensive Care Medicine, University Hospital in Plzen, 32300 Plzeň, Czech Republic
- Biomedical Centre, Faculty of Medicine in Plzen, Charles University, 32300 Plzen, Czech Republic
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5
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Mishra RK, Pande A, Ramachandran R, Trikha A, Singh PM, Rewari V. Effect of Change in Body Weight on Clinical Outcomes in Critically Ill Patients. Indian J Crit Care Med 2021; 25:1042-1048. [PMID: 34963724 PMCID: PMC8664026 DOI: 10.5005/jp-journals-10071-23978] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Intravenous fluid optimization is an essential component of managing patients in a critical care setting. A cumulative positive fluid balance is consistent with poor outcomes in patients admitted to the intensive care unit (ICU). The overall utility of net cumulative fluid balance as a surrogate for assessing fluid overload has been interrogated. Materials and methods This study was a prospective single-center observational study, which was done to correlate body weight changes with fluid balance in ICU patients and evaluate its impact on clinical outcomes. Inclusion criteria consisted of adult patients who were admitted to the critical care unit on specialized beds with integrated weighing scales between September 2017 and December 2018. The evaluation of the effect of changes in body weight on ICU survival was the primary objective of the study. Results We enrolled 105 patients in this study. The ICU mortality was 23.80% with non-survivors showing more weight gain than the survivors. Statistically significant weight gain was documented in the non-survivors on days 3 and 4 (1.9 vs 1.05; p = 0.0084 and 2.6 vs 1.6; p = 0.0030) of ICU admission. Non-survivors had greater cumulative positive fluid balance on fourth, fifth, and sixth days post-ICU admission when compared to survivors (3586 vs 1659 mL, p = 0.0322; 5418 vs 1255 mL, p = 0.0017; and 5430 vs 2305 mL p = 0.0264, respectively). In multivariate regression analysis, cumulative fluid balance did not correlate with days on mechanical ventilation or length of stay in ICU. Changes in body weight and cumulative fluid balance showed a good correlation. Conclusion In patients admitted to the ICU, weight gain on third and fourth days of admission is concordant with increased ICU mortality. Body weight changes were seen to correlate well with the cumulative fluid balance. How to cite this article Mishra RK, Pande A, Ramachandran R, Trikha A, Singh PM, Rewari V. Effect of Change in Body Weight on Clinical Outcomes in Critically Ill Patients. Indian J Crit Care Med 2021;25(9):1042–1048.
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Affiliation(s)
- Rajesh K Mishra
- Department of Critical Care Medicine, Fortis Hospital, Vasant Kunj, Delhi, India
| | - Aparna Pande
- Department of Anaesthesiology, Pain Medicine and Critical Care, All India Institute of Medical Sciences, Delhi, India
| | - Rashmi Ramachandran
- Department of Anaesthesiology, Pain Medicine and Critical Care, All India Institute of Medical Sciences, Delhi, India
| | - Anjan Trikha
- Department of Anaesthesiology, Pain Medicine and Critical Care, All India Institute of Medical Sciences, Delhi, India
| | - Preet M Singh
- Department of Anaesthesiology, Washington University in Saint Louis, Saint Louis, Missouri, United States
| | - Vimi Rewari
- Department of Anaesthesiology, Pain Medicine and Critical Care, All India Institute of Medical Sciences, Delhi, India
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Preload Dependency of 2D Right Ventricle Speckle Tracking Echocardiography Parameters in Healthy Volunteers: A Prospective Pilot Study. J Clin Med 2021; 11:jcm11010019. [PMID: 35011759 PMCID: PMC8745134 DOI: 10.3390/jcm11010019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 12/06/2021] [Accepted: 12/16/2021] [Indexed: 12/20/2022] Open
Abstract
(1) Background: Right ventricular (RV) strain parameters derived from the analysis of the tricuspid annular displacement (TAD) are emergent two-dimensional speckle tracking echocardiography (2D-STE) parameter used for the quantitative assessment of RV systolic function. Few data are available regarding 2D-STE parameters and their dependency on RV preload. Our aim was to evaluate the effect of an acute change in RV preload on 2D-STE parameters in healthy volunteers. (2) Methods: Acute modification of RV preload was performed by a fluid challenge (FC): an infusion of 500 mL of 0.9% sodium chloride was given over 5 min in supine position. Preload dependency (responder group) was confirmed by a stroke volume increase of at least 10% measured by echocardiography. (3) Results: Among 32 healthy volunteers, 19 (59%) subjects were classified as non-responders and 13 (41%) as responders. In the responder group, the tricuspid annular plane systolic excursion (TAPSE) significantly increased (20 (20–23.5) mm to 24 (20.5–26.5) mm; p = 0.018), while RV strain parameters significantly decreased after FC: −23.5 ((−22.3)–(−27.3))% to −25 ((−24)–(29.6))%; p = 0.03) for RV free wall longitudinal strain and −22.8 ((−20.4)–(−30.7))% to −23.7 ((−21.2)–(−27))%; p = 0.02) for RV four-chamber longitudinal strain. 2D-STE parameters derived from the TAD analysis were not influenced by the FC (all p > 0.05). (4) Conclusions: In young, healthy volunteers, RV strain parameters and TAPSE are preload dependent, while TAD parameters were not. The loading conditions must be accounted for when evaluating RV systolic function by 2D-STE parameters.
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Wollborn J, Hassenzahl LO, Reker D, Staehle HF, Omlor AM, Baar W, Kaufmann KB, Ulbrich F, Wunder C, Utzolino S, Buerkle H, Kalbhenn J, Heinrich S, Goebel U. Diagnosing capillary leak in critically ill patients: development of an innovative scoring instrument for non-invasive detection. Ann Intensive Care 2021; 11:175. [PMID: 34910264 PMCID: PMC8674404 DOI: 10.1186/s13613-021-00965-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 12/02/2021] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND The concomitant occurrence of the symptoms intravascular hypovolemia, peripheral edema and hemodynamic instability is typically named Capillary Leak Syndrome (CLS) and often occurs in surgical critical ill patients. However, neither a unitary definition nor standardized diagnostic criteria exist so far. We aimed to investigate common characteristics of this phenomenon with a subsequent scoring system, determining whether CLS contributes to mortality. METHODS We conducted this single-center, observational, multidisciplinary, prospective trial in two separately run surgical ICUs of a tertiary academic medical center. 200 surgical patients admitted to the ICU and 30 healthy volunteers were included. Patients were clinically diagnosed as CLS or No-CLS group (each N = 100) according to the grade of edema, intravascular hypovolemia, hemodynamic instability, and positive fluid balance by two independent attending physicians with > 10 years of experience in ICU. We performed daily measurements with non-invasive body impedance electrical analysis, ultrasound and analysis of serum biomarkers to generate objective diagnostic criteria. Receiver operating characteristics were used, while we developed machine learning models to increase diagnostic specifications for our scoring model. RESULTS The 30-day mortility was increased among CLS patients (12 vs. 1%, P = 0.002), while showing higher SOFA-scores. Extracellular water was increased in patients with CLS with higher echogenicity of subcutaneous tissue [29(24-31) vs. 19(16-21), P < 0.001]. Biomarkers showed characteristic alterations, especially with an increased angiopoietin-2 concentration in CLS [9.9(6.2-17.3) vs. 3.7(2.6-5.6)ng/mL, P < 0.001]. We developed a score using seven parameters (echogenicity, SOFA-score, angiopoietin-2, syndecan-1, ICAM-1, lactate and interleukin-6). A Random Forest prediction model boosted its diagnostic characteristics (AUC 0.963, P < 0.001), while a two-parameter decision tree model showed good specifications (AUC 0.865). CONCLUSIONS Diagnosis of CLS in critically ill patients is feasible by objective, non-invasive parameters using the CLS-Score. A simplified two-parameter diagnostic approach can enhance clinical utility. CLS contributes to mortality and should, therefore, classified as an independent entity. TRIAL REGISTRATION German Clinical Trials Registry (DRKS No. 00012713), Date of registration 10/05/2017, www.drks.de.
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Affiliation(s)
- Jakob Wollborn
- Department of Anesthesiology and Critical Care, Medical Center, University of Freiburg, Freiburg im Breisgau, Germany. .,Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA, 02115, USA. .,Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.
| | - Lars O Hassenzahl
- Department of Anesthesiology and Critical Care, Medical Center, University of Freiburg, Freiburg im Breisgau, Germany.,Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
| | - Daniel Reker
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | - Hans Felix Staehle
- Department of Anesthesiology and Critical Care, Medical Center, University of Freiburg, Freiburg im Breisgau, Germany.,Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
| | - Anne Marie Omlor
- Department of Anesthesiology and Critical Care, Medical Center, University of Freiburg, Freiburg im Breisgau, Germany.,Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
| | - Wolfgang Baar
- Department of Anesthesiology and Critical Care, Medical Center, University of Freiburg, Freiburg im Breisgau, Germany.,Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
| | - Kai B Kaufmann
- Department of Anesthesiology and Critical Care, Medical Center, University of Freiburg, Freiburg im Breisgau, Germany.,Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
| | - Felix Ulbrich
- Department of Anesthesiology and Critical Care, Medical Center, University of Freiburg, Freiburg im Breisgau, Germany.,Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
| | - Christian Wunder
- Department of Anesthesiology and Critical Care, Robert-Bosch-Krankenhaus, Stuttgart, Germany
| | - Stefan Utzolino
- Department of General and Visceral Surgery, Medical Center, University of Freiburg, Freiburg im Breisgau, Germany.,Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
| | - Hartmut Buerkle
- Department of Anesthesiology and Critical Care, Medical Center, University of Freiburg, Freiburg im Breisgau, Germany.,Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
| | - Johannes Kalbhenn
- Department of Anesthesiology and Critical Care, Medical Center, University of Freiburg, Freiburg im Breisgau, Germany.,Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
| | - Sebastian Heinrich
- Department of Anesthesiology and Critical Care, Medical Center, University of Freiburg, Freiburg im Breisgau, Germany.,Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
| | - Ulrich Goebel
- Department of Anesthesiology and Critical Care, Medical Center, University of Freiburg, Freiburg im Breisgau, Germany.,Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.,Department of Anesthesiology and Critical Care, St. Franziskus-Hospital, Muenster, Germany
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Madsen JM, Wichmann S, Bestle MH, Itenov TS. Bioimpedance as a measure of fluid status in critically ill patients: A systematic review. Acta Anaesthesiol Scand 2021; 65:1155-1167. [PMID: 34036559 DOI: 10.1111/aas.13924] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 05/05/2021] [Accepted: 05/06/2021] [Indexed: 12/22/2022]
Abstract
OBJECTIVE Precise measurements of fluid status lack valid methods. Bioimpedance is an attractive diagnostic tool because it is noninvasive, quick, and relatively cheap. This systematic review aims to assess the existing evidence of bioimpedance as an accurate measure of fluid status in critically ill patients. DATA SOURCES PubMed and Embase up till March 2021 were systematically searched (PROSPERO: CRD42020157436). STUDY SELECTION Eligibility criteria were studies reporting original data from cohorts of adult patients in intensive care units and doing at least one whole-body bioimpedance and one reference test. In addition, studies assessing internal reproducibility were included. DATA EXTRACTION An extraction form was designed for the purpose. DATA SYNTHESIS Nine hundred five studies were screened for eligibility, and 28 studies, comprising 1482 individual patients, were included in the final analysis. Eight studies compared bioimpedance with a gold standard, and two of those reported the results adequate. We found a low mean difference, but the 95% limits of agreements had wide limits. The remaining studies applied different surrogates as reference tests. Correlations ranged from 0.05 to 0.99. The Grading of Recommendations Assessment, Development and Evaluation (GRADE) certainty of evidence for all outcomes was very low. CONCLUSIONS The accuracy of bioimpedance as a measure for fluids in critically ill patients in the intensive care unit cannot be determined. Due to the lack of a gold standard, numerous studies compared bioimpedance with surrogate outcomes with great variability in both designs and results. Assessing the internal reproducibility of bioimpedance had the same limitations, but the studies overall reported good internal reproducibility.
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Affiliation(s)
- Janne M. Madsen
- Department of Anaesthesiology Copenhagen University Hospital—North Zealand Copenhagen Denmark
- Department of Clinical Medicine University of Copenhagen Copenhagen Denmark
| | - Sine Wichmann
- Department of Anaesthesiology Copenhagen University Hospital—North Zealand Copenhagen Denmark
- Department of Clinical Medicine University of Copenhagen Copenhagen Denmark
| | - Morten H. Bestle
- Department of Anaesthesiology Copenhagen University Hospital—North Zealand Copenhagen Denmark
- Department of Clinical Medicine University of Copenhagen Copenhagen Denmark
| | - Theis S. Itenov
- Department of Anaesthesiology Copenhagen University Hospital—North Zealand Copenhagen Denmark
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Bioelectric impedance analysis for body composition measurement and other potential clinical applications in critical illness. Curr Opin Crit Care 2021; 27:344-353. [PMID: 33967207 PMCID: PMC8270506 DOI: 10.1097/mcc.0000000000000840] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
PURPOSE OF REVIEW Insight into body composition is of great value in the ICU. Bioelectric impedance analysis (BIA) is the most applicable bedside technique. However, bioimpedance has not been validated in the critically ill, and the interpretation of the measurements poses challenges. This review discusses the potential clinical applications of BIA and explores caveats and solutions to its use in the intensive care setting. RECENT FINDINGS A correlation is repeatedly found between raw impedance parameters, fluid ratios, overhydration, and adverse outcome of critical illness. However, cut-off and reference values remain elusive. Experience with BIA-guided fluid management in the ICU is limited. BIA-derived muscle mass appears a promising biomarker for sarcopenia, correlating well with CT-analysis. Body cell mass and fat-free mass provide potential use in estimation of metabolic rate, protein requirements and pharmacokinetics. Several methods of reducing bias in BIA parameters in critical illness require validation. SUMMARY There are currently too many uncertainties and discrepancies regarding interpretation of bioimpedance in critical illness, to justify therapeutic consequences. However, there are several promising areas of research, concerning some of the most urgent clinical problems in intensive care, emphasizing the need to evaluate further the use and interpretation of bioimpedance in the intensive care setting.
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Murugan R, Bellomo R, Palevsky PM, Kellum JA. Ultrafiltration in critically ill patients treated with kidney replacement therapy. Nat Rev Nephrol 2021; 17:262-276. [PMID: 33177700 PMCID: PMC9826716 DOI: 10.1038/s41581-020-00358-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/21/2020] [Indexed: 01/30/2023]
Abstract
Management of fluid overload is one of the most challenging problems in the care of critically ill patients with oliguric acute kidney injury. Various clinical practice guidelines support fluid removal using ultrafiltration during kidney replacement therapy. However, ultrafiltration is associated with considerable risks. Emerging evidence from observational studies suggests that both slow and fast rates of net fluid removal (that is, net ultrafiltration (UFNET)) during continuous kidney replacement therapy are associated with increased mortality compared with moderate UFNET rates. In addition, fast UFNET rates are associated with an increased risk of cardiac arrhythmias. Experimental studies in patients with kidney failure who were treated with intermittent haemodialysis suggest that fast UFNET rates are also associated with ischaemic injury to the heart, brain, kidney and gut. The UFNET rate should be prescribed based on patient body weight in millilitres per kilogramme per hour with close monitoring of patient haemodynamics and fluid balance. Dialysate cooling and sodium modelling may prevent haemodynamic instability and facilitate large volumes of fluid removal in patients with kidney failure who are treated with intermittent haemodialysis, but the effects of this strategy on organ injury are less well studied in critically ill patients treated with continuous kidney replacement therapy. Randomized trials are required to examine whether moderate UFNET rates are associated with a reduced risk of haemodynamic instability, organ injury and improved outcomes in critically ill patients.
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Affiliation(s)
- Raghavan Murugan
- The Center for Critical Care Nephrology, CRISMA, Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
- The Clinical Research, Investigation, and Systems Modeling of Acute Illness (CRISMA) Center, Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
| | - Rinaldo Bellomo
- Department of Intensive Care Medicine, The University of Melbourne, Austin Hospital, Melbourne, Victoria, Australia
| | - Paul M Palevsky
- The Center for Critical Care Nephrology, CRISMA, Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Renal-Electrolyte Division, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - John A Kellum
- The Center for Critical Care Nephrology, CRISMA, Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- The Clinical Research, Investigation, and Systems Modeling of Acute Illness (CRISMA) Center, Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
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Pereira CGM, Santana ERS, Ramos JER, da Silva HMBS, Nunes MAP, Forbes SC, Santos HO. Low Serum Zinc Levels and Associated Risk Factors in Hospitalized Patients Receiving Oral or Enteral Nutrition: A Case-control Study. Clin Ther 2020; 43:e39-e55. [PMID: 33388174 DOI: 10.1016/j.clinthera.2020.12.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 12/03/2020] [Accepted: 12/08/2020] [Indexed: 01/08/2023]
Abstract
PURPOSE To assess whether hospitalization and feeding strategy impact the risk of hypozincemia and associated risk factors. METHODS In this case-control study, serum zinc levels were compared between inpatients fed oral nutrition (ON) (n = 76) or enteral nutrition (EN) (n = 191) with outpatient controls (n = 1095). FINDINGS Zinc levels were significantly lower in inpatients receiving EN compared with those receiving ON (P = 0.001). Significant (P < 0.001) β-values of -11.16 and -17.58 for serum zinc concentrations were found for inpatients receiving ON or EN, respectively, compared with the outpatients. Hospitalization and old age were both independent predictors of zinc deficiency. More than 75% of patients >60 years of age fed EN had a zinc concentration <68.75 μg/dL. Low hemoglobin levels increased the risk of low zinc levels for inpatients receiving EN (P = 0.003) and ON (P = 0.026). Age (P < 0.001), noninvasive mechanical ventilatory support (P = 0.016), and critical care (P = 0.018) were risk factors for hypozincemia in patients receiving ON. Low iron levels were associated with hypozincemia (P = 0.001) in patients receiving EN. IMPLICATIONS Hospitalization and being >60 years of age were risk factors for zinc deficiency. Intensive care and noninvasive mechanical ventilatory support were risk factors for hypozincemia in hospitalized patients who were fed orally. Low hemoglobin levels increased the risk of low zinc concentrations for inpatients receiving EN and ON, and low iron levels were associated with hypozincemia only after EN.
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Affiliation(s)
- Cristina G M Pereira
- Department of Medicine, Federal University of Sergipe, Aracaju, Sergipe, Brazil; São Lucas Hospital, Aracaju, Sergipe, Brazil
| | - Erely R S Santana
- Department of Medicine, Federal University of Sergipe, Aracaju, Sergipe, Brazil
| | - Joane E R Ramos
- Department of Medicine, Federal University of Sergipe, Aracaju, Sergipe, Brazil
| | | | - Marco A P Nunes
- Department of Medicine, Federal University of Sergipe, Aracaju, Sergipe, Brazil
| | - Scott C Forbes
- Department of Physical Education, Faculty of Education, Brandon University, Brandon, Manitoba, Canada
| | - Heitor O Santos
- School of Medicine, Federal University of Uberlandia, Uberlandia, Minas Gerais, Brazil.
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A Noninvasive Stroke Volume Monitoring for Early Detection of Minimal Blood Loss: A Pilot Study. Shock 2020; 55:230-235. [PMID: 32769818 DOI: 10.1097/shk.0000000000001621] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
INTRODUCTION Alternation in traditional vital signs can only be observed during advanced stages of hypovolemia and shortly before the hemodynamic collapse. However, even minimal blood loss induces a decrease in the cardiac preload which translates to a decrease in stroke volume, but these indices are not readily monitored. We aimed to determine whether minor hemodynamic alternations induced by controlled and standardized hypovolemia can be detected by a whole-body bio-impedance technology. METHODS This was a non-randomized controlled trial that enrolled healthy blood donors. Vital signs, as well as shock index and stroke volume (SV), were recorded using noninvasive cardiac system, a noninvasive whole-body impedance-based hemodynamic analysis system, during phlebotomy. RESULTS Sixty subjects were included in the study group and 20 in the control group. Blood loss of 450 mL resulted in a significant decrease in systolic blood pressure (5 mm Hg; 95% CI 3, 6) and SV (5.07 mL; 95% CI 3.21, 6.92), and increase in shock index (0.03 bpm/mm Hg; 95% CI 0.01, 0.05). Clinically detectable changes (≥10%) in blood pressure and shock index were detectable in 15% and 5%, respectively. SV decreased by more than 10% in 40% of blood donors. No significant changes occurred in the control group. CONCLUSION Continuous noninvasive monitoring of SV may be superior to conventional indices (e.g., heart rate, blood pressure, or shock index) for early identification of acute blood loss. As an operator-independent and point-of-care technology, the SV whole body bio-impedance measurement may assist in accurate monitoring of potentially bleeding patients and early identification of hemorrhage.
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