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Keskinis C, Panagoutsos S, Soilemezi E, Pateinakis P, Kyriklidou P, Memmos E, Papadopoulou D, Passadakis P. A nephrology trainee can define the fluid status through lung ultrasonography and inferior vena cava measurements in hemodialysis patients: an observational study in a single center. J Ultrasound 2024:10.1007/s40477-024-00903-x. [PMID: 38867096 DOI: 10.1007/s40477-024-00903-x] [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: 12/14/2023] [Accepted: 04/09/2024] [Indexed: 06/14/2024] Open
Abstract
AIMS The determination of ideal weight in hemodialysis patients remains a common problem. The use of Lung Ultrasound (LUS) is an emerging method of assessing the hydric status of hemodialysis patients. LUS combined with Inferior Vena Cava (IVC) ultrasonography can define the fluid status in hemodialysis patients. METHODS This study included 68 hemodialysis patients from the Dialysis Unit of Papageorgiou General Hospital in Thessaloniki. The patients underwent lung and IVC ultrasound 30 min before and after the end of the dialysis session by a nephrology trainee. Patients' ideal weight was modified based on daily clinical practice rather than ultrasound findings. The presence of B lines and ultrasound findings of the IVC were evaluated. RESULTS The average B line score was 11.53 ± 5.02 before dialysis and became 5.57 ± 3.14 after the session. The average diameter of the IVC was 14.266 ± 0.846 mm before dialysis and 12.328 ± 0.879 mm after the session. The patients were categorized based on the magnitude of overhydration and the findings were evaluated. In addition, findings after the session showed a statistically significant correlation between the b line score and the diameter of the IVC adjusted for the body surface area. (p = 0.009 < 0.05). CONCLUSIONS A high rate of hyperhydration was detected before the dialysis session (25%). While it is the first study conducted by a nephrology trainee highlighting that it is a feasible technique. Intervention studies should be carried out in the future to draw more precise conclusions.
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Affiliation(s)
- Christodoulos Keskinis
- Department of Nephrology, Papageorgiou General Hospital, Thessaloniki, Greece.
- Medical School, Democritus University of Thrace, Alexandroupolis, Greece.
| | - Stylianos Panagoutsos
- Medical School, Democritus University of Thrace, Alexandroupolis, Greece
- Department of Nephrology, University Hospital of Alexandroupolis, Alexandroupolis, Greece
| | - Eleni Soilemezi
- Intensive Care Unit, Papageorgiou Hospital, Thessaloniki, Greece
| | | | - Parthena Kyriklidou
- Department of Nephrology, Papageorgiou General Hospital, Thessaloniki, Greece
| | - Evangelos Memmos
- Department of Nephrology, Papageorgiou General Hospital, Thessaloniki, Greece
| | | | - Ploumis Passadakis
- Medical School, Democritus University of Thrace, Alexandroupolis, Greece
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Schneider E, Maimon N, Hasidim A, Shnaider A, Migliozzi G, Haviv YS, Halpern D, Abu Ganem B, Fuchs L. Can Dialysis Patients Identify and Diagnose Pulmonary Congestion Using Self-Lung Ultrasound? J Clin Med 2023; 12:jcm12113829. [PMID: 37298024 DOI: 10.3390/jcm12113829] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 05/22/2023] [Accepted: 05/31/2023] [Indexed: 06/12/2023] Open
Abstract
BACKGROUND With the recent developments in automated tools, smaller and cheaper machines for lung ultrasound (LUS) are leading us toward the potential to conduct POCUS tele-guidance for the early detection of pulmonary congestion. This study aims to evaluate the feasibility and accuracy of a self-lung ultrasound study conducted by hemodialysis (HD) patients to detect pulmonary congestion, with and without artificial intelligence (AI)-based automatic tools. METHODS This prospective pilot study was conducted between November 2020 and September 2021. Nineteen chronic HD patients were enrolled in the Soroka University Medical Center (SUMC) Dialysis Clinic. First, we examined the patient's ability to obtain a self-lung US. Then, we used interrater reliability (IRR) to compare the self-detection results reported by the patients to the observation of POCUS experts and an ultrasound (US) machine with an AI-based automatic B-line counting tool. All the videos were reviewed by a specialist blinded to the performer. We examined their agreement degree using the weighted Cohen's kappa (Kw) index. RESULTS A total of 19 patients were included in our analysis. We found moderate to substantial agreement between the POCUS expert review and the automatic counting both when the patient performed the LUS (Kw = 0.49 [95% CI: 0.05-0.93]) and when the researcher performed it (Kw = 0.67 [95% CI: 0.67-0.67]). Patients were able to place the probe in the correct position and present a lung image well even weeks from the teaching session, but did not show good abilities in correctly saving or counting B-lines compared to an expert or an automatic counting tool. CONCLUSIONS Our results suggest that LUS self-monitoring for pulmonary congestion can be a reliable option if the patient's count is combined with an AI application for the B-line count. This study provides insight into the possibility of utilizing home US devices to detect pulmonary congestion, enabling patients to have a more active role in their health care.
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Affiliation(s)
- Eyal Schneider
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 7747629, Israel
| | - Netta Maimon
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 7747629, Israel
| | - Ariel Hasidim
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 7747629, Israel
| | - Alla Shnaider
- Department of Nephrology, Soroka University Medical Center, Beer-Sheva 8457108, Israel
| | - Gabrielle Migliozzi
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 7747629, Israel
| | - Yosef S Haviv
- Department of Nephrology, Soroka University Medical Center, Beer-Sheva 8457108, Israel
| | - Dor Halpern
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 7747629, Israel
| | - Basel Abu Ganem
- Department of Health Policy and Management, Ben-Gurion University of the Negev, Beer-Sheva 7747629, Israel
- Emergency Room, Joseftal Hospital, Eilat 8808024, Israel
| | - Lior Fuchs
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 7747629, Israel
- Medical Intensive Care Unit and Clinical Research Center, Soroka University Medical Center, Beer-Sheva 8457108, Israel
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Trirattanapikul A, Kongpetch S, Lukkanalikitkul E, Ahooja A, Seesuk P, Sharma A, Anutrakulchai S. Lung Ultrasound Estimates the Overhydration and Benefits Blood Pressure Control in Normal or Mild Symptomatic Hemodialysis Patients. Int J Nephrol Renovasc Dis 2022; 15:383-395. [PMID: 36570492 PMCID: PMC9784469 DOI: 10.2147/ijnrd.s374569] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 11/12/2022] [Indexed: 12/23/2022] Open
Abstract
Introduction Lung ultrasound (LUS) is used for dry weight guidance by assessment of pulmonary congestion in hemodialysis (HD) patients. The aim of this study was to estimate amounts of accumulated fluid by total LUS scores (TLUSS), which were scarcely reported in HD patients who were normal or had a mild functional abnormality. In addition, the correlations between the LUS score of each area and TLUSS were determined to suggest fewer specific areas valuable to shorten the examination time of LUS. Methods This cohort study was conducted in adult HD patients who have New York Heart Association Classes I-II. LUS and multifrequency bioimpedance (BIA) were performed at baseline and the individual prescribed dry weight was set. Then each LUS was conducted at 28 areas of bilateral intercostal spaces and calculated as TLUSS weekly for eight weeks in which dry weight was adjusted. The second BIA was also measured at week eight. The difference of pre-HD weight and target weight (weight gain; WG) represented the amount of fluid accumulation. Results Twenty patients with a mean age of 62.2±14.0 years were enrolled. One hundred and sixty-six LUS were performed in which forty episodes of them were simultaneously measured with BIA. Optimum dry weight adjusted by TLUSS which benefited in mean reductions of blood pressure, and cardiothoracic ratios. WG amounts were significantly correlated with TLUSS (r=0.38), and with extracellular fluid (r=0.35) and overhydration fluid (r=0.39) assessed by BIA. Estimations of mean fluid overload were 2.18 (TLUSS ≤15), 2.72 (TLUSS 16-24), 3.17 (TLUSS 25-33), 3.65 (TLUSS 34-38) and 5.03 (TLUSS ≥39) in liters. The cut-off points of sum scores of 12 specific lung areas represented the none-mild were <8, moderate at 8-16, and severe pulmonary congestions were >16. Conclusion TLUSS estimated accumulated fluid useful for volume and blood pressure controls. Performance of LUS in 12 specific lung areas may reduce spending time and support routine uses of LUS in clinical practice.
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Affiliation(s)
| | - Sawinee Kongpetch
- Deparment of Medicine, Khon Kaen University, Khon Kaen, Thailand,Center of Excellence in Kidney Diseases, Khon Kaen University, Khon Kaen, Thailand
| | - Eakalak Lukkanalikitkul
- Deparment of Medicine, Khon Kaen University, Khon Kaen, Thailand,Center of Excellence in Kidney Diseases, Khon Kaen University, Khon Kaen, Thailand
| | - Anucha Ahooja
- Department of Radiology, Khon Kaen University, Khon Kaen, Thailand
| | - Patamapon Seesuk
- Center of Excellence in Kidney Diseases, Khon Kaen University, Khon Kaen, Thailand
| | - Amod Sharma
- Chronic Kidney Disease Prevention in the Northeast of Thailand (CKDNET) Project, Khon Kaen University, Khon Kaen, Thailand
| | - Sirirat Anutrakulchai
- Deparment of Medicine, Khon Kaen University, Khon Kaen, Thailand,Chronic Kidney Disease Prevention in the Northeast of Thailand (CKDNET) Project, Khon Kaen University, Khon Kaen, Thailand,Correspondence: Sirirat Anutrakulchai, Division of Nephrology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand, Email ;
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Ravi KS. High Ultrafiltration Rates and Mortality in Hemodialysis Patients: Current Evidence and Future Steps. KIDNEY360 2022; 3:1293-1295. [PMID: 36176654 PMCID: PMC9416820 DOI: 10.34067/kid.0003402022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 06/14/2022] [Indexed: 02/02/2023]
Affiliation(s)
- Katherine Scovner Ravi
- Renal Division, Department of Medicine, Brigham and Women’s Hospital/Harvard Medical School, Boston, Massachusetts
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Zoccali C, Mallamaci F, Picano E. Detecting and Treating Lung Congestion with Kidney Failure. Clin J Am Soc Nephrol 2022; 17:757-765. [PMID: 35140128 PMCID: PMC9269573 DOI: 10.2215/cjn.14591121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Fluid overload is a common complication in patients with CKD, particularly patients with kidney failure, a population with a very high risk for pulmonary edema. Lung ultrasound is now a well-validated technique that allows for reliable estimates of lung water in clinical practice. Several studies in patients with kidney failure documented a high prevalence of asymptomatic lung congestion of moderate to severe degree in this population, and this alteration was only weakly related with fluid excess as measured by bioimpedance spectroscopy. Furthermore, in these studies, lung congestion correlated in a dose-dependent fashion with death risk. In the Lung Water by Ultra-Sound Guided Treatment to Prevent Death and Cardiovascular Complications in High Risk Kidney Failure Patients with Cardiomyopathy (LUST) trial, a treatment strategy guided by lung ultrasound safely relieved lung congestion but failed to significantly reduce the risk for a combined end point including death, nonfatal myocardial infarction, and decompensated heart failure. However, in line with three trials in patients with heart failure, a post hoc analysis of the LUST trial showed that the use of lung ultrasound reduces the risk for repeated episodes of acute heart failure and repeated cardiovascular events. Given the high cardiovascular risk of pulmonary edema in patients with predialysis CKD, defining the epidemiology of lung congestion in this population is a public health priority. Specific trials in this population and additional trials in patients with kidney failure will establish whether targeting lung congestion at an asymptomatic phase may improve the severe cardiovascular prognosis of both patients predialysis and patients on dialysis.
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Affiliation(s)
| | - Francesca Mallamaci
- Associazione Ipertensione Nefrologia e Trapianto Renale, Reggio Cal, Italy.,Unità Operativa di Nefrologia, Dialisi e Trapianto Renale, Grande Ospedale Metropolitano di Reggio Calabria and Institute of Clinical Physiology-Reggio Cal Unit, National Research Council of Italy
| | - Eugenio Picano
- Institute of Clinical Physiology-Pisa, National Research Council, Pisa, Italy
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Heldeweg MLA, Jagesar AR, Haaksma ME, Smit JM, Paulus F, Schultz MJ, Tuinman PR. Effects of Lung Ultrasonography-Guided Management on Cumulative Fluid Balance and Other Clinical Outcomes: A Systematic Review. ULTRASOUND IN MEDICINE & BIOLOGY 2021; 47:1163-1171. [PMID: 33637390 DOI: 10.1016/j.ultrasmedbio.2021.01.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 01/21/2021] [Accepted: 01/22/2021] [Indexed: 06/12/2023]
Abstract
Lung ultrasonography is accurate in detecting pulmonary edema and overcomes most limitations of traditional diagnostic modalities. Whether use of lung ultrasonography-guided management has an effect on cumulative fluid balances and other clinical outcomes remains unclear. In this systematic review, we included 12 studies using ultrasonography guided-management with a total of 2290 patients. Four in-patient studies found a reduced cumulative fluid balance (ranging from -0.3 L to -2.4 L), whereas three out-patient studies found reduction in dialysis dry weight (ranging from -2.6 kg to -0.2 kg) compared with conventionally managed patients. None of the studies found adverse effects related to hypoperfusion. The use of lung ultrasonography-guided management was not associated with other clinical outcomes. This systematic review shows that lung ultrasonography-guided management, exclusively or in concert with other diagnostic modalities, is associated with a reduced cumulative fluid balance. Studies thus far have not shown a consistent effect on clinical outcomes.
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Affiliation(s)
- Micah L A Heldeweg
- Department of Intensive Care, Amsterdam University Medical Centers, location VUmc, Amsterdam, The Netherlands; Amsterdam Leiden IC Focused Echography, Amsterdam, The Netherlands.
| | - Ameet R Jagesar
- Department of Intensive Care, Amsterdam University Medical Centers, location VUmc, Amsterdam, The Netherlands
| | - Mark E Haaksma
- Department of Intensive Care, Amsterdam University Medical Centers, location VUmc, Amsterdam, The Netherlands; Amsterdam Leiden IC Focused Echography, Amsterdam, The Netherlands
| | - Jasper M Smit
- Department of Intensive Care, Amsterdam University Medical Centers, location VUmc, Amsterdam, The Netherlands; Amsterdam Leiden IC Focused Echography, Amsterdam, The Netherlands
| | - Frederique Paulus
- Department of Intensive Care, Amsterdam University Medical Centers, location AMC, Amsterdam, The Netherlands
| | - Marcus J Schultz
- Department of Intensive Care, Amsterdam University Medical Centers, location AMC, Amsterdam, The Netherlands; Mahidol Oxford Tropical Medicine Research Unit (MORU), Mahidol University, Bangkok, Thailand; Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Pieter R Tuinman
- Department of Intensive Care, Amsterdam University Medical Centers, location VUmc, Amsterdam, The Netherlands; Amsterdam Leiden IC Focused Echography, Amsterdam, The Netherlands
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7
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Fu Q, Chen Z, Fan J, Ling C, Wang X, Liu X, Shen Y. Lung ultrasound methods for assessing fluid volume change and monitoring dry weight in pediatric hemodialysis patients. Pediatr Nephrol 2021; 36:969-976. [PMID: 33067674 DOI: 10.1007/s00467-020-04735-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 07/17/2020] [Accepted: 07/29/2020] [Indexed: 12/24/2022]
Abstract
BACKGROUND The value of lung ultrasound in adult hemodialysis has been confirmed. The determination of dry weight in children remains challenging. This study explores the usefulness of lung ultrasound in assessing fluid volume change and the possibility of pulmonary ultrasound as a method to monitor dry weight in pediatric dialysis patients. METHODS This was a prospective observational study. We compared the predialysis and postdialysis B-line scores of the dry-weight group and non-dry-weight group. Changes in body weight and B-line scores were recorded during the dialytic period and interdialytic period, and the correlation was analyzed. Lung ultrasound was performed after the dialysis session every Friday, and B-line score < 10 was considered to indicate that there was no volume overload; the weight was recorded as the target weight. RESULTS Fourteen patients were included. A total of 78 ultrasound assessments were performed: 30 in the dry-weight group and 48 in the non-dry-weight group. The B-line scores decreased after dialysis in all patients (p < 0.001). Thirty-three assessments were performed in the interdialytic period, and 40 assessments in the dialytic period were performed within 1 week. Linear regression showed that changes in B-line number were directly and positively correlated with interdialytic weight gain (r = 0.517, p = 0.002) and dialytic weight loss (r = 0.558, p < 0.001). The weight of the children increased gradually without volume overload in two patients during follow-up. CONCLUSION Lung ultrasound can assess the fluid volume change of pediatric dialysis patients in real time. Lung ultrasound could be a valuable method for monitoring dry weight in pediatric dialysis patients.
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Affiliation(s)
- Qian Fu
- Department of Nephrology, Beijing Children's Hospital Affiliated to Capital Medical University, Beijing Key Laboratory for Chronic Renal Disease and Blood Purification, National Center for Children's Health, West District Nan Li Shi Lu 56th, Beijing, 100045, China
| | - Zhi Chen
- Department of Nephrology, Beijing Children's Hospital Affiliated to Capital Medical University, Beijing Key Laboratory for Chronic Renal Disease and Blood Purification, National Center for Children's Health, West District Nan Li Shi Lu 56th, Beijing, 100045, China
| | - Jianfeng Fan
- Department of Nephrology, Beijing Children's Hospital Affiliated to Capital Medical University, Beijing Key Laboratory for Chronic Renal Disease and Blood Purification, National Center for Children's Health, West District Nan Li Shi Lu 56th, Beijing, 100045, China
| | - Chen Ling
- Department of Nephrology, Beijing Children's Hospital Affiliated to Capital Medical University, Beijing Key Laboratory for Chronic Renal Disease and Blood Purification, National Center for Children's Health, West District Nan Li Shi Lu 56th, Beijing, 100045, China
| | - Xiaoman Wang
- Department of Ultrasound, Beijing Children's Hospital Affiliated to Capital Medical University, National Center for Children's Health, West District Nan Li Shi Lu 56th, Beijing, 100045, China
| | - Xiaorong Liu
- Department of Nephrology, Beijing Children's Hospital Affiliated to Capital Medical University, Beijing Key Laboratory for Chronic Renal Disease and Blood Purification, National Center for Children's Health, West District Nan Li Shi Lu 56th, Beijing, 100045, China.
| | - Ying Shen
- Department of Nephrology, Beijing Children's Hospital Affiliated to Capital Medical University, Beijing Key Laboratory for Chronic Renal Disease and Blood Purification, National Center for Children's Health, West District Nan Li Shi Lu 56th, Beijing, 100045, China.
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Recommendations for Lung Ultrasound in Internal Medicine. Diagnostics (Basel) 2020; 10:diagnostics10080597. [PMID: 32824302 PMCID: PMC7460159 DOI: 10.3390/diagnostics10080597] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 08/07/2020] [Accepted: 08/10/2020] [Indexed: 12/11/2022] Open
Abstract
A growing amount of evidence prompts us to update the first version of recommendations for lung ultrasound in internal medicine (POLLUS-IM) that was published in 2018. The recommendations were established in several stages, consisting of: literature review, assessment of literature data quality (with the application of QUADAS, QUADAS-2 and GRADE criteria) and expert evaluation carried out consistently with the modified Delphi method (three rounds of on-line discussions, followed by a secret ballot by the panel of experts after each completed discussion). Publications to be analyzed were selected from the following databases: Pubmed, Medline, OVID, and Embase. New reports published as of October 2019 were added to the existing POLLUS-IM database used for the original publication of 2018. Altogether, 528 publications were systematically reviewed, including 253 new reports published between September 2017 and October 2019. The new recommendations concern the following conditions and issues: pneumonia, heart failure, monitoring dialyzed patients' hydration status, assessment of pleural effusion, pulmonary embolism and diaphragm function assessment. POLLUS-IM 2020 recommendations were established primarily for clinicians who utilize lung ultrasound in their everyday clinical work.
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Seibel A, Zechner PM, Berghold A, Holter M, Braß P, Michels G, Leister N, Gemes G, Donauer R, Giebler RM, Sakka SG. B-Lines for the assessment of extravascular lung water: Just focused or semi-quantitative? Acta Anaesthesiol Scand 2020; 64:953-960. [PMID: 32236940 DOI: 10.1111/aas.13586] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 02/25/2020] [Accepted: 03/18/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND B-lines as typical artefacts of lung ultrasound are considered as surrogate measurement for extravascular lung water. However, B-lines develop in the sub-pleural space and do not allow assessment of the whole lung. Here, we present data from the first observational multi-centre study focusing on the correlation between a B-lines score and extravascular lung water in critically ill patients suffering from a variety of diseases. PATIENTS AND METHODS In 184 adult patients, 443 measurements were obtained. B-lines were counted and expressed in a score which was compared to extravascular lung water, measured by single-indicator transpulmonary thermodilution. Appropriate correlation coefficients were calculated and receiver operating characteristics (ROC-) curves were plotted. RESULTS Overall, B-lines score was correlated with body weight-indexed extravascular lung water characterized by r = .59. The subgroup analysis revealed a correlation coefficient in patients without an infection of r = .44, in those with a pulmonary infection of r = .75 and in those with an abdominal infection of r = .23, respectively. Using ROC-analysis the sensitivity and specificity of B-lines for detecting an increased extravascular lung water (>10 mL/kg) was 63% and 79%, respectively. In patients with a P/F ratio <200 mm Hg, sensitivity and specificity to predict an increased extravascular lung water was 71% and 93%, respectively. CONCLUSIONS Assessment of B-lines does not accurately reflect actual extravascular lung water. In presence of an impaired oxygenation, B-lines may reliably indicate increased extravascular lung water as cause of the oxygenation disorders.
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Affiliation(s)
- Armin Seibel
- Department of Anaesthesiology, Intensive and Emergency Medicine Diakonie Klinikum Jung‐Stilling Siegen Germany
| | - Peter M. Zechner
- Department of Cardiology and Intensive Care Medicine LKH Graz II Graz Austria
| | - Andrea Berghold
- Institute for Medical Informatics, Statistics and Documentation Medical University of Graz Graz Austria
| | - Magdalena Holter
- Institute for Medical Informatics, Statistics and Documentation Medical University of Graz Graz Austria
| | - Patrick Braß
- Department of Anaesthesiology and operative Intensive Care Medicine Helios‐Klinikum Krefeld Krefeld Germany
| | - Guido Michels
- Department of Acute and Emergency Care St.-Antonius-Hospital gGmbH Eschweiler Germany
| | - Nicolas Leister
- Department of Anaesthesiology and Intensive Care Medicine University Hospital of Cologne Cologne Germany
| | - Geza Gemes
- Department of Anaesthesiology and Intensive Care Medicine Krankenhaus der Barmherzigen Brüder Graz Austria
| | - Reinmar Donauer
- Department of Anaesthesiology and Intensive Care Medicine LKH Graz II Graz Austria
| | - Reiner M. Giebler
- Department of Anaesthesiology, Intensive and Emergency Medicine Diakonie Klinikum Jung‐Stilling Siegen Germany
| | - Samir G. Sakka
- Department of Anaesthesiology and operative Intensive Care Medicine Medical Centre Merheim University Witten/Herdecke Witten Germany
- Department of Intensive Care Medicine Gemeinschaftsklinikum Mittelrhein gGmbHAcademic teaching hospital of the Johannes Gutenberg University Mainz Koblenz Germany
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