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Lin J, Rosario J, Saltarelli N. Resuscitative Ultrasound and Protocols. Emerg Med Clin North Am 2024; 42:947-966. [PMID: 39326996 DOI: 10.1016/j.emc.2024.05.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/28/2024]
Abstract
The management of patients in shock or arrest is a critical aspect of emergency medicine and critical care. Rapid and accurate assessment is paramount in determining the underlying causes and initiating timely interventions. This article provides a summary of essential ultrasound protocols for the critically ill patient including the extended focused assessment with sonography for trauma (EFAST), rapid ultrasound for shock and hypotension (RUSH), and sonography in hypotension and cardiac arrest in the emergency department (SHoC-ED).
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Affiliation(s)
- Judy Lin
- Department of Emergency Medicine, Baylor Scott & White All Saints Medical Center, 1400 8th Avenue, Fort Worth, TX 76104, USA.
| | - Javier Rosario
- Department of Emergency Medicine, University of Central Florida College of Medicine/HCA Florida Healthcare, 720 W Oak Street, Suite 201, Kissimmee, FL 34741, USA. https://twitter.com/javimedsimus
| | - Nicholas Saltarelli
- Department of Emergency Medicine, John Peter Smith Hospital, 1500 S Main Street, Fort Worth, TX 76104, USA
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Brea C, Freeh E, Prats MI. Comment on Levitt et al. Approach to Decompensated Right Heart Failure in the Acute Setting. J. Clin. Med. 2024, 13, 869. J Clin Med 2024; 13:3848. [PMID: 38999414 PMCID: PMC11242526 DOI: 10.3390/jcm13133848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Accepted: 06/25/2024] [Indexed: 07/14/2024] Open
Abstract
We read with great interest the article titled "Approach to Decompensated Right Heart Failure in the Acute Setting" [...].
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Affiliation(s)
- Carolina Brea
- Department of Emergency Medicine, The Ohio State University, Columbus, OH 43210, USA; (E.F.)
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Leyba K, Longino A, Ormesher R, Krienke M, Van Ochten N, Zimmerman K, McCormack L, Martin K, Thai T, Furgeson S, Teitelbaum I, Burke J, Douglas I, Gill E. Venous excess ultrasonography (VExUS) captures dynamic changes in volume status surrounding hemodialysis: A multicenter prospective observational study. RESEARCH SQUARE 2024:rs.3.rs-4185584. [PMID: 38659788 PMCID: PMC11042415 DOI: 10.21203/rs.3.rs-4185584/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Background The evaluation of volume status is essential to clinical decision-making, yet multiple studies have shown that physical exam does not reliably estimate a patient's intravascular volume. Venous excess ultrasound score (VExUS) is an emerging volume assessment tool that utilizes inferior vena cava (IVC) diameter and pulse-wave Doppler waveforms of the portal, hepatic and renal veins to evaluate venous congestion. A point-of-care ultrasound exam initially developed by Beaubein-Souligny et al., VExUS represents a reproducible, non-invasive and accurate means of assessing intravascular congestion. VExUS has recently been validated against RHC-the gold-standard of hemodynamic evaluation for volume assessment. While VExUS scores were shown to correlate with elevated cardiac filling pressures (i.e., right atrial pressure (RAP) and pulmonary capillary wedge pressure (PCWP)) at a static point in time, the ability of VExUS to capture dynamic changes in volume status has yet to be elucidated. We hypothesized that paired VExUS examinations performed before and after hemodialysis (HD) would reflect changes in venous congestion in a diverse patient population. Methods Inpatients with end-stage renal disease undergoing intermittent HD were evaluated with transabdominal VExUS and lung ultrasonography before and following HD. Paired t-tests were conducted to assess differences between pre-HD and post-HD VExUS scores, B-line scores and dyspnea scores. Results Fifty-six patients were screened for inclusion in this study. Ten were excluded due to insufficient image quality or incomplete exams, and forty-six patients (ninety-two paired ultrasound exams) were included in the final analysis. Paired t-test analysis of pre-HD and post-HD VExUS scores revealed a mean VExUS grade change of 0.82 (p<0.001) on a VExUS scale ranging from 0 to 4. The mean difference in B-line score following HD was 0.8 (p=0.001). There was no statistically significant difference in subjective dyspnea score (p=0.41). Conclusions Large-volume fluid removal with HD was represented by changes in VExUS score, highlighting the utility of the VExUS exam to capture dynamic shifts in intravascular volume status. Future studies should evaluate change in VExUS grade with intravenous fluid or diuretic administration, with the ultimate goal of evaluating the capacity of a standardized bedside ultrasound protocol to guide inpatient volume optimization.
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Douglas IS, Elwan MH, Najarro M, Romagnoli S. Dynamic monitoring tools for patients admitted to the emergency department with circulatory failure: narrative review with panel-based recommendations. Eur J Emerg Med 2024; 31:98-107. [PMID: 38364037 PMCID: PMC11232941 DOI: 10.1097/mej.0000000000001103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 10/24/2023] [Indexed: 02/18/2024]
Abstract
Intravenous fluid therapy is commonly administered in the emergency department (ED). Despite the deleterious potential of over- and under-resuscitation, professional society guidelines continue to recommend administering a fixed volume of fluid in initial resuscitation. Predicting whether a specific patient will respond to fluid therapy remains one of the most important, but challenging questions that ED clinicians face in clinical practice. Surrogate parameters (i.e. blood pressure and heart rate), are widely used in usual care to estimate changes in stroke volume (SV). Due to their inadequacy in estimating SV, noninvasive techniques (e.g. bioreactance, echocardiography, noninvasive finger cuff technology), have been proposed as a more accurate and readily deployable method for assessing flow and preload responsiveness. Dynamic monitoring systems based on cardiac preload challenge and assessment of SV, by using noninvasive and continuous methods, provide more accurate, feasible, efficient, and reasonably accurate strategy for prediction of fluid responsiveness than static measurements. In this article, we aimed to analyze the different methods currently available for dynamic monitoring of preload responsiveness.
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Affiliation(s)
- Ivor S. Douglas
- Denver Health Medical Center, University of Colorado School of Medicine, Denver Colorado, USA
| | - Mohammed H. Elwan
- Emergency Department, Kettering General Hospital, Kettering, UK
- Department of Cardiovascular Sciences, University of Leicester, Leicester, UK
- Department of Emergency Medicine, Alexandria University, Alexandria, Egypt
| | - Marta Najarro
- Emergency Department, Ramón y Cajal University Hospital, Madrid, Spain
| | - Stefano Romagnoli
- Health Science Department, Section of Anesthesia and Critical Care, University of Florence, Florence, Italy
- Department of Anesthesia and Critical Care, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy
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5
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Longino A, Martin K, Leyba K, Siegel G, Thai TN, Riscinti M, Douglas IS, Gill E, Burke J. Prospective Evaluation of Venous Excess Ultrasound for Estimation of Venous Congestion. Chest 2024; 165:590-600. [PMID: 37813180 PMCID: PMC11317813 DOI: 10.1016/j.chest.2023.09.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 08/24/2023] [Accepted: 09/29/2023] [Indexed: 10/11/2023] Open
Abstract
BACKGROUND Venous excess ultrasound (VExUS) is a novel ultrasound technique previously reported as a noninvasive measure of venous congestion and predictor of cardiorenal acute kidney injury. RESEARCH QUESTION Are there associations between VExUS grade and cardiac pressures measured by right heart catheterization (RHC) and cardiac biomarkers and clinical outcomes in patients undergoing RHC? STUDY DESIGN AND METHODS We conducted a prospective cohort study at the Denver Health Medical Center from December 20, 2022, to March 25, 2023. All patients undergoing RHC underwent a blinded VExUS assessment prior to their procedure. Multivariable regressions were conducted to assess relationships between VExUS grade and cardiac pressures, biomarkers, and changes in weight among patients with heart failure, a proxy for diuretic success. Receiver operating characteristic curve and area under the curve (AUC) were derived for VExUS, inferior vena cava (IVC) diameter, and IVC collapsibility index (ICI) to predict right atrial pressure (RAP) > 10 and < 7 mm Hg. RESULTS Among 81 patients, 45 of whom were inpatients, after adjusting for age, sex, and Charlson Comorbidity Index, there were significant relationships between VexUS grade of 2 (β = 4.8; 95% CI, 2.6-7.1; P < .01) and 3 (β = 11; 95% CI, 8.9-14; P < .01) and RAP, VExUS grade of 2 (β = 6.8; 95% CI, 0.16-13; P = .045) and 3 (β = 15; 95% CI, 7.3-22; P < .01) and mean pulmonary artery pressure, and VExUS grade of 2 (β = 7.0; 95% CI, 3.9-10; P < .01) and 3 (β = 13; 95% CI, 9.5-17; P < .01) and pulmonary capillary wedge pressure. AUC values for VExUS, IVC diameter, and ICI as predictors of RAP > 10 mm Hg were 0.9 (95% CI, 0.83-0.97), 0.77 (95% CI, 0.68-0.88), and 0.65 (95% CI, 0.52-0.78), respectively. AUC values for VExUS, IVC diameter, and ICI as predictors of RAP < 7 mm Hg were 0.79 (95% CI, 0.70-0.87), 0.74 (95% CI, 0.64-0.84), and 0.62 (95% CI, 0.49-0.76), respectively. In a subset of 23 patients with heart failure undergoing diuresis, there was a significant association between VExUS grade 3 and change in weight between time of RHC and discharge (P = .025). INTERPRETATION Although more research is required, VExUS has the potential to increase diagnostic and therapeutic capabilities of physicians at the bedside and increase our understanding of the underappreciated problem of venous congestion.
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Affiliation(s)
- August Longino
- Department of Internal Medicine, University of Colorado Hospital, Aurora, CO.
| | - Katie Martin
- University of Colorado School of Medicine, University of Colorado, Aurora, CO
| | - Katarina Leyba
- Department of Internal Medicine, University of Colorado Hospital, Aurora, CO
| | - Gabriel Siegel
- Department of Emergency Medicine, University of Colorado Hospital, Aurora, CO
| | - Theresa N Thai
- Department of Cardiology, University of Colorado, Aurora, CO
| | - Matthew Riscinti
- Department of Emergency Medicine, University of Colorado Hospital, Aurora, CO
| | - Ivor S Douglas
- Department of Pulmonary and Critical Care Medicine, Denver Health Medical Center, Denver, CO
| | - Edward Gill
- Department of Cardiology, University of Colorado, Aurora, CO
| | - Joseph Burke
- Department of Cardiology, Denver Health Medical Center, Denver, CO
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Malakan Rad E, Parizadeh N, Radmehr H, Sheykhian T, Gharib B, Zeinaloo A. Correlation between echocardiographic estimation of right atrial pressure and invasive measurement of central venous pressure in postoperative pediatric patients with congenital heart disease: a prospective observational study. Egypt Heart J 2024; 76:25. [PMID: 38381260 PMCID: PMC10881910 DOI: 10.1186/s43044-024-00456-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 02/16/2024] [Indexed: 02/22/2024] Open
Abstract
BACKGROUND Right atrial pressure plays a critical role as a hemodynamic parameter in diagnosing pulmonary hypertension and other cardiac diseases, as well as guiding the treatment and prognosis of various cardiac disorders. If there is no obstruction between the inferior or superior vena cava (SVC) as central veins and the right atrium, the pressures in these veins could be considered equal to the right atrial pressure. This study aimed to examine the correlation between echocardiographic methods for estimating right atrial pressure and invasive measurements of central venous pressure (CVPi) in infants and children with congenital heart disease during the 48 h after cardiac surgery and to establish regression equations for echocardiographic estimation of central venous pressure (CVPe). RESULTS We prospectively enrolled 43 infants and children, ranging in age from 6 months to 16 years, including 20 males and 23 females. We found a significant correlation between CVPi and the ratio of the maximal diameter of IVC to the maximal diameter of the descending aorta ratio (IVCmax/DAOmax) (r = 0.529, P < 0.001), SVCS/D velocity ratio (SVCS/D) (r = 0.462, P = 0.006), right atrial vertical diameter (RAVD) (r = 0.409, P = 0.01), area (r = 0.384, P = 0.014), and tricuspid valve A wave acceleration rate (TVAAR) (r = 0.315, P = 0.048). Multiple regression analysis yielded an equation for estimating central venous pressure using four parameters related to the IVC, SVC, tricuspid valve, and right atrium. The equation is as follows: estimated CVP = 4.36 + (2.35 × IVCmax/DAOmax) + (1.06 × SVCS/D) + (0.059 × RAVD) + (0.001 × TVAAR). This equation is strongly correlated with CVPi (Pearson r = 0.698, P = 0.002). CONCLUSIONS The estimation of central venous pressure through a multi-parametric equation that included the ratio of the maximal diameter of the inferior vena cava to the maximal diameter of the descending aorta, the ratio of S to D velocity of the superior vena cava, the vertical diameter of the right atrium, and the acceleration rate of the A wave of the tricuspid valve demonstrated a robust correlation with invasively measured central venous pressure. To assess the accuracy of predicted pressures by this equation, further investigations are required to apply this innovative multi-parametric formula to a prospective population of pediatric patients with congenital heart disease.
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Affiliation(s)
- Elaheh Malakan Rad
- Children's Medical Center (Pediatric Center of Excellence), Affiliated with Tehran University of Medical Sciences, No. 62, Dr. Gharib's Street, End of Keshavarz Boulevard, Tehran, 1419733151, Iran.
| | - Nazli Parizadeh
- Children's Medical Center (Pediatric Center of Excellence), Affiliated with Tehran University of Medical Sciences, No. 62, Dr. Gharib's Street, End of Keshavarz Boulevard, Tehran, 1419733151, Iran
| | - Hassan Radmehr
- Children's Medical Center (Pediatric Center of Excellence), Affiliated with Tehran University of Medical Sciences, No. 62, Dr. Gharib's Street, End of Keshavarz Boulevard, Tehran, 1419733151, Iran
| | - Toktam Sheykhian
- Imam Khoemoeini's Hospital, Affiliated with Tehran University of Medical Sciences, No. 62, Dr. Gharib's Street, End of Keshavarz Boulevard, Next to Children's Medical Center, Tehran, 1419733134, Iran
| | - Behdad Gharib
- Children's Medical Center (Pediatric Center of Excellence), Affiliated with Tehran University of Medical Sciences, No. 62, Dr. Gharib's Street, End of Keshavarz Boulevard, Tehran, 1419733151, Iran
| | - Aliakbar Zeinaloo
- Children's Medical Center (Pediatric Center of Excellence), Affiliated with Tehran University of Medical Sciences, No. 62, Dr. Gharib's Street, End of Keshavarz Boulevard, Tehran, 1419733151, Iran
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Magon F, Longhitano Y, Savioli G, Piccioni A, Tesauro M, Del Duca F, Napoletano G, Volonnino G, Maiese A, La Russa R, Di Paolo M, Zanza C. Point-of-Care Ultrasound (POCUS) in Adult Cardiac Arrest: Clinical Review. Diagnostics (Basel) 2024; 14:434. [PMID: 38396471 PMCID: PMC10887671 DOI: 10.3390/diagnostics14040434] [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: 12/30/2023] [Revised: 02/10/2024] [Accepted: 02/12/2024] [Indexed: 02/25/2024] Open
Abstract
Point-of-Care Ultrasound (POCUS) is a rapid and valuable diagnostic tool available in emergency and intensive care units. In the context of cardiac arrest, POCUS application can help assess cardiac activity, identify causes of arrest that could be reversible (such as pericardial effusion or pneumothorax), guide interventions like central line placement or pericardiocentesis, and provide real-time feedback on the effectiveness of resuscitation efforts, among other critical applications. Its use, in addition to cardiovascular life support maneuvers, is advocated by all resuscitation guidelines. The purpose of this narrative review is to summarize the key applications of POCUS in cardiac arrest, highlighting, among others, its prognostic, diagnostic, and forensic potential. We conducted an extensive literature review utilizing PubMed by employing key search terms regarding ultrasound and its use in cardiac arrest. Apart from its numerous advantages, its limitations and challenges such as the potential for interruption of chest compressions during image acquisition and operator proficiency should be considered as well and are discussed herein.
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Affiliation(s)
- Federica Magon
- Department of Anesthesia and Critical Care, Bicocca University of Milano, 20126 Milano, Italy;
| | - Yaroslava Longhitano
- Department of Anesthesiology and Perioperative Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA;
| | - Gabriele Savioli
- Departement of Emergency, IRCCS Fondazione Policlinico San Matteo, 27100 Pavia, Italy;
| | - Andrea Piccioni
- Department of Emergency Medicine, Gemelli Hospital, Catholic University of Rome, 00168 Rome, Italy;
| | - Manfredi Tesauro
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy;
- Geriatric Medicine Residency Program, University of Rome “Tor Vergata”, 00133 Rome, Italy;
| | - Fabio Del Duca
- Department of Anatomical, Histological, Forensic and Orthopedical Sciences, Sapienza University of Rome, Viale Regina Elena 336, 00161 Rome, Italy; (F.D.D.); (G.N.); (G.V.)
| | - Gabriele Napoletano
- Department of Anatomical, Histological, Forensic and Orthopedical Sciences, Sapienza University of Rome, Viale Regina Elena 336, 00161 Rome, Italy; (F.D.D.); (G.N.); (G.V.)
| | - Gianpietro Volonnino
- Department of Anatomical, Histological, Forensic and Orthopedical Sciences, Sapienza University of Rome, Viale Regina Elena 336, 00161 Rome, Italy; (F.D.D.); (G.N.); (G.V.)
| | - Aniello Maiese
- Department of Surgical Pathology, Medical, Molecular and Critical Area, Institute of Legal Medicine, University of Pisa, 56126 Pisa, Italy
| | - Raffaele La Russa
- Department of Clinical Medicine, Public Health, Life Sciences, and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy;
| | - Marco Di Paolo
- Department of Surgical Pathology, Medical, Molecular and Critical Area, Institute of Legal Medicine, University of Pisa, 56126 Pisa, Italy
| | - Christian Zanza
- Geriatric Medicine Residency Program, University of Rome “Tor Vergata”, 00133 Rome, Italy;
- Italian Society of Prehospital Emergency Medicine (SIS 118), 74121 Taranto, Italy
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Schwarz C, Lindner G, Windpessl M, Knechtelsdorfer M, Saemann MD. [Consensus recommendations on the diagnosis and treatment of hyponatremia from the Austrian Society for Nephrology 2024]. Wien Klin Wochenschr 2024; 136:1-33. [PMID: 38421476 PMCID: PMC10904443 DOI: 10.1007/s00508-024-02325-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/03/2024] [Indexed: 03/02/2024]
Abstract
Hyponatremia is a disorder of water homeostasis. Water balance is maintained by the collaboration of renal function and cerebral structures, which regulate thirst mechanisms and secretion of the antidiuretic hormone. Measurement of serum-osmolality, urine osmolality and urine-sodium concentration help to diagnose the different reasons for hyponatremia. Hyponatremia induces cerebral edema and might lead to severe neurological symptoms, which need acute therapy. Also, mild forms of hyponatremia should be treated causally, or at least symptomatically. An inadequate fast increase of the serum sodium level should be avoided, because it raises the risk of cerebral osmotic demyelination. Basic pathophysiological knowledge is necessary to identify the different reasons for hyponatremia which need different therapeutic procedures.
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Affiliation(s)
- Christoph Schwarz
- Innere Medizin 1, Pyhrn-Eisenwurzenklinikum, Sierningerstr. 170, 4400, Steyr, Österreich.
| | - Gregor Lindner
- Zentrale Notaufnahme, Kepler Universitätsklinikum GmbH, Johannes-Kepler-Universität, Linz, Österreich
| | | | | | - Marcus D Saemann
- 6.Medizinische Abteilung mit Nephrologie und Dialyse, Klinik Ottakring, Wien, Österreich
- Medizinische Fakultät, Sigmund-Freud Universität, Wien, Österreich
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Ladha P, Truong EI, Kanuika P, Allan A, Kishawi S, Ho VP, Claridge JA, Brown LR. Diagnostic Adjunct Techniques in the Assessment of Hypovolemia: A Prospective Pilot Project. J Surg Res 2024; 293:1-7. [PMID: 37690381 PMCID: PMC11334708 DOI: 10.1016/j.jss.2023.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 07/21/2023] [Accepted: 08/10/2023] [Indexed: 09/12/2023]
Abstract
INTRODUCTION Measuring the hypovolemic resuscitation end point remains a critical care challenge. Our project compared clinical hypovolemia (CH) with three diagnostic adjuncts: 1) noninvasive cardiac output monitoring (NICOM), 2) ultrasound (US) static IVC collapsibility (US-IVC), and 3) US dynamic carotid upstroke velocity (US-C). We hypothesized US measures would correlate more closely to CH than NICOM. METHODS Adult trauma/surgical intensive care unit patients were prospectively screened for suspected hypovolemia after acute resuscitation, excluding patients with burns, known heart failure, or severe liver/kidney disease. Adjunct measurements were assessed up to twice a day until clinical improvement. Hypovolemia was defined as: 1) NICOM: ≥10% stroke volume variation with passive leg raise, 2) US-IVC: <2.1 cm and >50% collapsibility (nonventilated) or >18% collapsibility (ventilated), 3) US-C: peak systolic velocity increase 15 cm/s with passive leg raise. Previously unknown cardiac dysfunction seen on US was noted. Observation-level data were analyzed with a Cohen's kappa (κ). RESULTS 44 patients (62% male, median age 60) yielded 65 measures. Positive agreement with CH was 47% for NICOM, 37% for US-IVC and 10% for US-C. None of the three adjuncts correlated with CH (κ -0.045 to 0.029). After adjusting for previously unknown cardiac dysfunction present in 10 patients, no adjuncts correlated with CH (κ -0.036 to 0.031). No technique correlated with any other (κ -0.118 to 0.083). CONCLUSIONS None of the adjunct measurements correlated with CH or each other, highlighting that fluid status assessment remains challenging in critical care. US should assess for right ventricular dysfunction prior to resuscitation.
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Affiliation(s)
- Prerna Ladha
- Department of Surgery, MetroHealth Medical Center, Cleveland, Ohio
| | - Evelyn I Truong
- Department of Surgery, MetroHealth Medical Center, Cleveland, Ohio; Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Peter Kanuika
- Department of Surgery, MetroHealth Medical Center, Cleveland, Ohio; Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Annie Allan
- Department of Surgery, MetroHealth Medical Center, Cleveland, Ohio
| | - Sami Kishawi
- Department of Surgery, MetroHealth Medical Center, Cleveland, Ohio; Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Vanessa P Ho
- Department of Surgery, MetroHealth Medical Center, Cleveland, Ohio; Department of Population Health and Quantitative Health Sciences, Case Western Reserve University, Cleveland, Ohio
| | | | - Laura R Brown
- Department of Surgery, MetroHealth Medical Center, Cleveland, Ohio.
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10
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Kaptein EM, Oo Z, Kaptein MJ. Hepatorenal syndrome misdiagnosis may be reduced using inferior vena cava ultrasound to assess intravascular volume and guide management. Ren Fail 2023; 45:2185468. [PMID: 36866858 PMCID: PMC9987740 DOI: 10.1080/0886022x.2023.2185468] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023] Open
Abstract
Hepatorenal syndrome (HRS) is a diagnosis of exclusion defined as acute kidney injury (AKI) with cirrhosis and ascites, with serum creatinine unresponsive to standardized volume administration and diuretic withdrawal. Persistent intravascular hypovolemia or hypervolemia may contribute to AKI and be revealed by inferior vena cava ultrasound (IVC US), which may guide additional volume management. Twenty hospitalized adult patients meeting HRS-AKI criteria had IVC US to assess intravascular volume after receiving standardized albumin administration and diuretic withdrawal. Six had IVC collapsibility index (IVC-CI) ≥50% and IVCmax ≤0.7 cm suggesting intravascular hypovolemia, 9 had IVC-CI <20% and IVCmax >0.7 cm suggesting intravascular hypervolemia, and 5 had IVC-CI ≥20% to <50% and IVCmax >0.7 cm. Additional volume management was prescribed in the 15 patients with either hypovolemia or hypervolemia. After 4-5 days, serum creatinine levels decreased ≥20% without hemodialysis in 6 of 20 patients - 3 with hypovolemia received additional volume, and 2 with hypervolemia plus one with 'euvolemia' and dyspnea were volume restricted and received diuretics. In the other 14 patients, serum creatinine failed to persistently decrease ≥20% or hemodialysis was required indicating that AKI did not improve. In summary, fifteen of 20 patients (75%) were presumed to have intravascular hypovolemia or hypervolemia by IVC ultrasound. Six of the 20 patients (40%) improved AKI by 4-5 days of follow-up with additional IVC US-guided volume management, and thus had been misdiagnosed as HRS-AKI. IVC US may more accurately define HRS-AKI as being neither hypovolemic nor hypervolemic, and guide volume management, decreasing the frequency of HRS-AKI misdiagnosis.
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Affiliation(s)
- Elaine M Kaptein
- Departments of Medicine, Divisions of Nephrology, University of Southern California, Los Angeles, CA, USA
| | - Zayar Oo
- Departments of Medicine, Divisions of Nephrology, University of Southern California, Los Angeles, CA, USA
| | - Matthew J Kaptein
- Departments of Medicine, Divisions of Nephrology, University of Southern California, Los Angeles, CA, USA.,Loma Linda University Medical Center, Loma Linda, CA, USA
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11
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Kaptein EM, Kaptein MJ. Inferior vena cava ultrasound and other techniques for assessment of intravascular and extravascular volume: an update. Clin Kidney J 2023; 16:1861-1877. [PMID: 37915939 PMCID: PMC10616489 DOI: 10.1093/ckj/sfad156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Indexed: 11/03/2023] Open
Abstract
Goals of volume management are to accurately assess intravascular and extravascular volume and predict response to volume administration, vasopressor support or volume removal. Data are reviewed that support the following: (i) Dynamic parameters reliably guide volume administration and may improve clinical outcomes compared with static parameters, but some are invasive or only validated with mechanical ventilation without spontaneous breathing. (ii) Ultrasound visualization of inferior vena cava (IVC) diameter variations with respiration reliably assesses intravascular volume and predicts volume responsiveness. (iii) Although physiology of IVC respiratory variations differs with mechanical ventilation and spontaneous breathing, the IVC collapsibility index (CI) and distensibility index are interconvertible. (iv) Prediction of volume responsiveness by IVC CI is comparable for mechanical ventilation and spontaneous breathing patients. (v) Respiratory variations of subclavian/proximal axillary and internal jugular veins by ultrasound are alternative sites, with comparable reliability. (vi) Data support clinical applicability of IVC CI to predict hypotension with anesthesia, guide ultrafiltration goals, predict dry weight, predict intra-dialytic hypotension and assess acute decompensated heart failure. (vii) IVC ultrasound may complement ultrasound of heart and lungs, and abdominal organs for venous congestion, for assessing and managing volume overload and deresuscitation, renal failure and shock. (viii) IVC ultrasound has limitations including inadequate visualization. Ultrasound data should always be interpreted in clinical context. Additional studies are required to further assess and validate the role of bedside ultrasonography in clinical care.
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Affiliation(s)
- Elaine M Kaptein
- Departments of Medicine, Divisions of Nephrology, University of Southern California, Los Angeles, CA, USA
| | - Matthew J Kaptein
- Departments of Medicine, Divisions of Nephrology, University of Southern California, Los Angeles, CA, USA
- Loma Linda University Medical Center, Loma Linda, CA, USA
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Chang YJ, Liu CC, Huang YT, Wu JY, Hung KC, Liu PH, Lin CH, Lin YT, Chen IW, Lan KM. Assessing the Efficacy of Inferior Vena Cava Collapsibility Index for Predicting Hypotension after Central Neuraxial Block: A Systematic Review and Meta-Analysis. Diagnostics (Basel) 2023; 13:2819. [PMID: 37685357 PMCID: PMC10487093 DOI: 10.3390/diagnostics13172819] [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: 08/05/2023] [Revised: 08/26/2023] [Accepted: 08/30/2023] [Indexed: 09/10/2023] Open
Abstract
The use of ultrasonography to predict spinal-induced hypotension (SIH) has gained significant attention. This diagnostic meta-analysis aimed to investigate the reliability of the inferior vena cava collapsibility index (IVCCI) in predicting SIH in patients undergoing various surgeries. Databases, including Embase, Cochrane Library, Medline, and Google Scholar, were screened until 28 July 2023, yielding 12 studies with 1076 patients (age range: 25.6-79 years) undergoing cesarean section (CS) (n = 4) or non-CS surgeries (n = 8). Patients with SIH had a significantly higher IVCCI than those without SIH (mean difference: 11.12%, 95% confidence interval (CI): 7.83-14.41). The pooled incidence rate of SIH was 40.5%. IVCCI demonstrated satisfactory overall diagnostic reliability (sensitivity, 77%; specificity, 82%). The pooled area under the curve (AUC) was 0.85, indicating its high capability to differentiate patients at risk of PSH. The Fagan nomogram plot demonstrated a positive likelihood ratio (PLR) of 4 and a negative likelihood ratio (NLR) of 0.28. The results underscore the robustness and discriminative ability of IVCCI as a predictive tool for SIH. Nevertheless, future investigations should focus on assessing its applicability to high-risk patients and exploring the potential enhancement in patient safety through its incorporation into clinical practice.
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Affiliation(s)
- Ying-Jen Chang
- Department of Anesthesiology, Chi Mei Medical Center, Tainan City 71004, Taiwan
- Department of Recreation and Health-Care Management, College of Recreation and Health Management, Chia Nan University of Pharmacy and Science, Tainan 71710, Taiwan
| | - Chien-Cheng Liu
- Department of Anesthesiology, E-Da Hospital, I-Shou University, Kaohsiung City 82445, Taiwan
- Department of Nursing, College of Medicine, I-Shou University, Kaohsiung City 82445, Taiwan
- School of Medicine, I-Shou University, Kaohsiung City 82445, Taiwan
| | - Yen-Ta Huang
- Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan City 70101, Taiwan
| | - Jheng-Yan Wu
- Department of Nutrition, Chi Mei Medical Center, Tainan City 71004, Taiwan
| | - Kuo-Chuan Hung
- Department of Anesthesiology, Chi Mei Medical Center, Tainan City 71004, Taiwan
| | - Ping-Hsin Liu
- Department of Anesthesiology, E-Da Dachang Hospital, I-Shou University, Kaohsiung City 80794, Taiwan
| | - Chien-Hung Lin
- Department of Anesthesiology, Chi Mei Medical Center, Tainan City 71004, Taiwan
| | - Yao-Tsung Lin
- Department of Anesthesiology, Chi Mei Medical Center, Tainan City 71004, Taiwan
| | - I-Wen Chen
- Department of Anesthesiology, Chi Mei Medical Center, Liouying, Tainan City 71004, Taiwan
| | - Kuo-Mao Lan
- Department of Anesthesiology, Chi Mei Medical Center, Liouying, Tainan City 71004, Taiwan
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13
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Kittipibul V, Ganesh A, Coburn A, Coyne BJ, Gray JM, Molinger J, Ray N, Podgoreanu M, McCartney SL, Mamoun N, Fitzhugh RC, Lurz P, Green CL, Hernandez AF, Patel MR, Fudim M. Splanchnic Nerve Modulation Effects on Surrogate Measures of Venous Capacitance. J Am Heart Assoc 2023:e028780. [PMID: 37449573 PMCID: PMC10382122 DOI: 10.1161/jaha.122.028780] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 06/26/2023] [Indexed: 07/18/2023]
Abstract
Background Splanchnic nerve modulation (SNM) is an emerging procedure to reduce cardiac filling pressures in heart failure. Although the main contributor to reduction in cardiac preload is thought to be increased venous capacitance in the splanchnic circulation, supporting evidence is limited. We examined changes in venous capacitance surrogates pre- and post-SNM. Methods and Results This is a prespecified analysis of a prospective, open-label, single-arm interventional study evaluating the effects of percutaneous SNM with ropivacaine in chronic heart failure with elevated filling pressures at rest and with exercise. Patients underwent cardiopulmonary exercise testing with invasive hemodynamic assessment pre- and post-SNM. Blood pressure changes with modified Valsalva maneuver and hemoconcentration, pre- and post-SNM were compared using a repeated measures model. Inferior vena cava diameter and collapsibility (>50% decrease in size with inspiration), and presence of bendopnea pre- and post-SNM were also compared. Fifteen patients undergoing SNM (age 58 years, 47% women, 93% with left ventricular ejection fraction ≤35%) were included. After SNM, changes in systolic blood pressure during Valsalva (peak-to-trough) were greater (41 versus 48 mm Hg, P=0.025). Exercise-induced hemoconcentration was unchanged (0.63 versus 0.43 g/dL, P=0.115). Inferior vena cava diameter was reduced (1.59 versus 1.30 cm, P=0.034) with higher collapsibility (33% versus 73%, P=0.014). Bendopnea was less (47% versus 13%, P=0.025). Conclusions SNM resulted in increased venous capacitance, associated decreased cardiac preload, and decreased bendopnea. Minimally invasive measures of venous capacitance could serve as markers of successful SNM. Long-term effects of SNM on venous capacitance warrant further investigation for heart failure management. Registration URL: https://www.clinicaltrials.gov; Unique identifier: NCT03453151.
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Affiliation(s)
| | - Arun Ganesh
- Department of Anesthesiology Duke University Medical Center Durham NC
| | - Aubrie Coburn
- Division of Cardiology, Department of Medicine Duke University Durham NC
| | - Brian J Coyne
- Division of Cardiology, Department of Medicine Duke University Durham NC
| | - James Matthew Gray
- Division of Cardiology, Department of Medicine Duke University Durham NC
| | - Jeroen Molinger
- Division of Cardiology, Department of Medicine Duke University Durham NC
| | - Neil Ray
- Department of Anesthesiology Duke University Medical Center Durham NC
| | - Mihai Podgoreanu
- Department of Anesthesiology Duke University Medical Center Durham NC
| | | | - Negmeldeen Mamoun
- Department of Anesthesiology Duke University Medical Center Durham NC
| | | | - Philipp Lurz
- Heart Center Leipzig at University Leipzig Leipzig Germany
| | - Cynthia L Green
- Biostatistics and Bioinformatics Duke University Medical Center Durham NC
- Duke Clinical Research Institute Durham NC
| | - Adrian F Hernandez
- Division of Cardiology, Department of Medicine Duke University Durham NC
- Duke Clinical Research Institute Durham NC
| | - Manesh R Patel
- Division of Cardiology, Department of Medicine Duke University Durham NC
- Duke Clinical Research Institute Durham NC
| | - Marat Fudim
- Division of Cardiology, Department of Medicine Duke University Durham NC
- Duke Clinical Research Institute Durham NC
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14
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Khorsand S, Chin J, Rice J, Bughrara N, Myatra SN, Karamchandani K. Role of Point-of-Care Ultrasound in Emergency Airway Management Outside the Operating Room. Anesth Analg 2023; 137:124-136. [PMID: 36693019 DOI: 10.1213/ane.0000000000006371] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Tracheal intubation is one of the most frequently performed procedures in critically ill patients, and is associated with significant morbidity and mortality. Hemodynamic instability and cardiovascular collapse are common complications associated with the procedure, and are likely in patients with a physiologically difficult airway. Bedside point-of-care ultrasound (POCUS) can help identify patients with high risk of cardiovascular collapse, provide opportunity for hemodynamic and respiratory optimization, and help tailor airway management plans to meet individual patient needs. This review discusses the role of POCUS in emergency airway management, provides an algorithm to facilitate its incorporation into existing practice, and provides a framework for future studies.
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Affiliation(s)
- Sarah Khorsand
- From the Department of Anesthesiology and Pain Management, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Jeanette Chin
- From the Department of Anesthesiology and Pain Management, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Jake Rice
- From the Department of Anesthesiology and Pain Management, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Nibras Bughrara
- Department of Anesthesiology and Critical Care Medicine, Albany Medical College, Albany, New York
| | - Sheila N Myatra
- Department of Anesthesiology, Critical Care and Pain, Tata Memorial Hospital, Homi-Bhabha National Institute, Mumbai, India
| | - Kunal Karamchandani
- From the Department of Anesthesiology and Pain Management, University of Texas Southwestern Medical Center, Dallas, Texas
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15
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Wang CH, Fay K, Shashaty MG, Negoianu D. Volume Management with Kidney Replacement Therapy in the Critically Ill Patient. Clin J Am Soc Nephrol 2023; 18:788-802. [PMID: 37016472 PMCID: PMC10278821 DOI: 10.2215/cjn.0000000000000164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Accepted: 03/26/2023] [Indexed: 04/06/2023]
Abstract
While the administration of intravenous fluids remains an important treatment, the negative consequences of subsequent fluid overload have raised questions about when and how clinicians should pursue avenues of fluid removal. Decisions regarding fluid removal during critical illness are complex even for patients with preserved kidney function. This article seeks to apply general concepts of fluid management to the care of patients who also require KRT. Because optimal fluid management for any specific patient is likely to change over the course of critical illness, conceptual models using phases of care have been developed. In this review, we will examine the implications of one such model on the use of ultrafiltration during KRT for volume removal in distributive shock. This will also provide a useful lens to re-examine published data of KRT during critical illness. We will highlight recent prospective trials of KRT as well as recent retrospective studies examining ultrafiltration rate and mortality, review the results, and discuss applications and shortcomings of these studies. We also emphasize that current data and techniques suggest that optimal guidelines will not consist of recommendations for or against absolute fluid removal rates but will instead require the development of dynamic protocols involving frequent cycles of reassessment and adjustment of net fluid removal goals. If optimal fluid management is dynamic, then frequent assessment of fluid responsiveness, fluid toxicity, and tolerance of fluid removal will be needed. Innovations in our ability to assess these parameters may improve our management of ultrafiltration in the future.
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Affiliation(s)
- Christina H. Wang
- Renal, Electrolyte and Hypertension Division, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Kevin Fay
- Renal, Electrolyte and Hypertension Division, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Department of Anesthesiology and Critical Care, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Michael G.S. Shashaty
- Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Pulmonary, Allergy, and Critical Care Division, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Dan Negoianu
- Renal, Electrolyte and Hypertension Division, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
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16
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Al-Saray MZ, Ali A. Lung Ultrasound and Caval Indices to Assess Volume Status in Maintenance Hemodialysis Patients. POCUS JOURNAL 2023; 8:52-59. [PMID: 37152331 PMCID: PMC10155735 DOI: 10.24908/pocus.v8i1.15802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Background: Volume overload is common in end stage kidney disease (ESKD) and dialysis patients. Hence, the need for objective tools to detect such volume excess. Point of care ultrasound (POCUS) is a goal-directed, bedside examination to answer such a specific diagnostic question. Methods: One hundred Iraqi adult hemodialysis patients were recruited from February 1 to May 31, 2022. Primary clinical, dialysis data, and prescriptions were recorded. A nephrologist performed a POCUS examination after the last dialysis session of the week. In addition, an ultrasound examination of the chest was performed to detect B-lines and pleural effusion. Caval parameters included inferior vena cava (IVC) diameter and collapsibility index. Results: The mean age of the study group was 51.48 ± 14.6 years, with 53% males. The mean interdialytic weight gain was 2.74 ± 1.15 Kg. Lower limb edema and pleural effusion were present in 33% and 27%, respectively. Forty-seven percent of patients had >3 B-lines on lung ultrasound with a range of 12. Forty-three percent of patients had an IVC diameter of >2 cm, and 93% had <50% IVC collapsibility. In total, 97% of patients had evidence of excess volume by ultrasound criteria. IVC collapsibility index was the most prevalent sign of excess volume (93%). Patients without lower limb edema and pleural effusion had positive B-lines in 38.8% and 38.3%, an IVC diameter >2 cm in 46.2% and 38.3%, and IVC collapsibility <50% in 89.5% and 95.8% respectively. Conclusion: Iraqi maintenance hemodialysis patients are volume overloaded, which warrants proper intervention for detection and dialysis management. POCUS is a useful and easily performed technique to assess the volume status.
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Affiliation(s)
- Mujtaba Z Al-Saray
- Nephrology and Renal Transplantation Centre, The Medical CityBaghdadIraq
| | - Ala Ali
- Nephrology and Renal Transplantation Centre, The Medical CityBaghdadIraq
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17
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Ross DW, Moses AA, Niyyar VD. Point-of-care ultrasonography in nephrology comes of age. Clin Kidney J 2022; 15:2220-2227. [PMID: 36381376 PMCID: PMC9664573 DOI: 10.1093/ckj/sfac160] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Indexed: 03/22/2024] Open
Abstract
The physical exam is changing. Many have argued that the physical exam of the 21st century should include point-of-care ultrasound (POCUS). POCUS is being taught in medical schools and has been endorsed by the major professional societies of internal medicine. In this review we describe the trend toward using POCUS in medicine and describe where the practicing nephrologist fits in. We discuss what a nephrologist's POCUS exam should entail and we give special attention to what nephrologists can gain from learning POCUS. We suggest a 'nephro-centric' approach that includes not only ultrasound of the kidney and bladder, but of the heart, lungs and vascular access. We conclude by reviewing some of the sparse data available to guide training initiatives and give suggested next steps for advancing POCUS in nephrology.
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Affiliation(s)
- Daniel W Ross
- Donald and Barbara Zucker School of Medicine at Hofstra-Northwell, Division of Kidney Diseases and Hypertension, Great Neck, NY, USA
| | - Andrew A Moses
- Donald and Barbara Zucker School of Medicine at Hofstra-Northwell, Lenox Hill Division of Nephrology, New York, NY, USA
| | - Vandana Dua Niyyar
- Emory University, Division of Nephrology, Woodruff Memorial Research Building, Atlanta GA, USA
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18
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Beaubien-Souligny W, Trott T, Neyra JA. How to Determine Fluid Management Goals during Continuous Kidney Replacement Therapy in Patients with AKI: Focus on POCUS. KIDNEY360 2022; 3:1795-1806. [PMID: 36514727 PMCID: PMC9717662 DOI: 10.34067/kid.0002822022] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 07/18/2022] [Indexed: 06/17/2023]
Abstract
The utilization of kidney replacement therapies (KRT) for fluid management of patients who are critically ill has significantly increased over the last years. Clinical studies have suggested that both fluid accumulation and high fluid removal rates are associated with adverse outcomes in the critically ill population receiving KRT. Importantly, the ideal indications and/or fluid management strategies that could favorably affect these patients are unknown; however, differentiating clinical scenarios in which effective fluid removal may provide benefit to the patient by avoiding congestive organ injury, compared with other settings in which this intervention may result in harm, is direly needed in the critical care nephrology field. In this review, we describe observational data related to fluid management with KRT, and examine the role of point-of-care ultrasonography as a potential tool that could provide physiologic insights to better individualize decisions related to fluid management through KRT.
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Affiliation(s)
- William Beaubien-Souligny
- Division of Nephrology, Department of Medicine, University of Montreal Health Center (CHUM), Montreal, Canada
| | - Terren Trott
- Division of Emergency Medicine and Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Kentucky, Lexington, Kentucky
| | - Javier A. Neyra
- Division of Nephrology, Department of Internal Medicine, University of Alabama at Birmingham, Birmingham, Alabama
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19
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Wshah S, Xu B, Steinharter J, Reilly C, Morrissette K. Classification of clinically relevant intravascular volume status using point of care ultrasound and machine learning. J Med Imaging (Bellingham) 2022; 9:054502. [PMID: 36186002 PMCID: PMC9523076 DOI: 10.1117/1.jmi.9.5.054502] [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: 02/11/2022] [Accepted: 09/07/2022] [Indexed: 11/14/2022] Open
Abstract
Purpose This is a foundational study in which multiorgan system point of care ultrasound (POCUS) and machine learning (ML) are used to mimic physician management decisions regarding the functional intravascular volume status (IVS) and need for diuretic therapy. We present this as an impactful use case of an application of ML in aided decision making for clinical practice. IVS represents complex physiologic interactions of the cardiac, renal, pulmonary, and other organ systems. In particular, we focus on vascular congestion and overload as an evolving concept in POCUS diagnosis and clinical relevance. It is critical for physicians to be able to evaluate IVS without disrupting workflow or exposing patients to unnecessary testing, radiation, or cost. This work utilized a small retrospective dataset as a feasibility test for ML binary classification of diuretic administration validated with clinical decision data. Future work will be directed toward artificial intelligence (AI) delivery at the bedside and assessment of the impact on patient-centered outcomes and physician workflow improvement. Approach We retrospectively reviewed and processed 1039 POCUS video clips, including cardiac, thoracic, and inferior vena cava (IVC) views. Multiorgan POCUS clips were correlated with clinical data extracted from the electronic health record and deidentified for algorithm training and validation. We implemented a two-stream three-dimensional (3D) deep learning approach that fuses heart and IVC data to perform binary classification of the need for diuretic use. Results Our proposed approach achieves high classification accuracy (84%) for the determination of diuretic use with 0.84 area under the receiver operating characteristic curve. Conclusions Our two-stream 3D deep neural network is able to classify POCUS video clips that match physicians' classification for or against diuretic use with high accuracy. This serves as a foundational step in the progress toward AI-aided diagnosis and AI implementation in the field of IVS evaluation by POCUS.
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Affiliation(s)
- Safwan Wshah
- University of Vermont, Innovation 417, Burlington, Vermont, United States
| | - Beilei Xu
- FLX AI, Inc., New York, New York, United States
| | - John Steinharter
- University of Vermont, Larner College of Medicine, Burlington, Vermont, United States
| | - Clifford Reilly
- University of Vermont, Larner College of Medicine, Burlington, Vermont, United States
| | - Katelin Morrissette
- University of Vermont Medical Center, Department of Medicine, Division of Pulmonary and Critical Care Medicine, Burlington, Vermont, United States
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20
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Canaud B, Kooman J, Maierhofer A, Raimann J, Titze J, Kotanko P. Sodium First Approach, to Reset Our Mind for Improving Management of Sodium, Water, Volume and Pressure in Hemodialysis Patients, and to Reduce Cardiovascular Burden and Improve Outcomes. FRONTIERS IN NEPHROLOGY 2022; 2:935388. [PMID: 37675006 PMCID: PMC10479686 DOI: 10.3389/fneph.2022.935388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 06/07/2022] [Indexed: 09/08/2023]
Abstract
New physiologic findings related to sodium homeostasis and pathophysiologic associations require a new vision for sodium, fluid and blood pressure management in dialysis-dependent chronic kidney disease patients. The traditional dry weight probing approach that has prevailed for many years must be reviewed in light of these findings and enriched by availability of new tools for monitoring and handling sodium and water imbalances. A comprehensive and integrated approach is needed to improve further cardiac health in hemodialysis (HD) patients. Adequate management of sodium, water, volume and hemodynamic control of HD patients relies on a stepwise approach: the first entails assessment and monitoring of fluid status and relies on clinical judgement supported by specific tools that are online embedded in the HD machine or devices used offline; the second consists of acting on correcting fluid imbalance mainly through dialysis prescription (treatment time, active tools embedded on HD machine) but also on guidance related to diet and thirst management; the third consist of fine tuning treatment prescription to patient responses and tolerance with the support of innovative tools such as artificial intelligence and remote pervasive health trackers. It is time to come back to sodium and water imbalance as the root cause of the problem and not to act primarily on their consequences (fluid overload, hypertension) or organ damage (heart; atherosclerosis, brain). We know the problem and have the tools to assess and manage in a more precise way sodium and fluid in HD patients. We strongly call for a sodium first approach to reduce disease burden and improve cardiac health in dialysis-dependent chronic kidney disease patients.
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Affiliation(s)
- Bernard Canaud
- School of Medicine, Montpellier University, Montpellier, France
- Global Medical Office, Freseenius Medical Care (FMC)-France, Fresnes, France
| | - Jeroen Kooman
- Maastricht University Maastricht Medical Center (UMC), Maastricht University, Maastricht, Netherlands
| | - Andreas Maierhofer
- Global Research Development, Fresenius Medical Care (FMC) Deutschland GmbH, Bad Homburg, Germany
| | - Jochen Raimann
- Research Division, Renal Research Institute, New York, NY, United States
| | - Jens Titze
- Cardiovascular and Metabolic Disease Programme, Duke-National University Singapore (NUS) Medical School, Singapore, Singapore
| | - Peter Kotanko
- Research Division, Renal Research Institute, New York, NY, United States
- Nephrology, Icahn School of Medicine at Mount Sinai, New York, NY, United States
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21
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Kaptein YE, Kaptein EM. Comparison of subclavian vein to inferior vena cava collapsibility by ultrasound in acute heart failure: A pilot study. Clin Cardiol 2021; 45:51-59. [PMID: 34931333 PMCID: PMC8799052 DOI: 10.1002/clc.23758] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 11/28/2021] [Accepted: 11/30/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Management of acute decompensated heart failure (ADHF) requires accurate assessment of relative intravascular volume, which may be technically challenging. Inferior vena cava (IVC) collapsibility with respiration reflects intravascular volume and right atrial pressure (RAP). Subclavian vein (SCV) collapsibility may provide an alternative. HYPOTHESIS The purpose of this study was to examine the relationship between SCV collapsibility index (CI) and IVC CI in ADHF. METHODS This was a prospective study of non-ventilated patients with ADHF who had paired IVC and SCV ultrasound assessments. As SCV CI is highly position-dependent, measurements were performed supine at 30-45°. RESULTS Thirty-three patients were included with 36 encounters. The sample size was adequately powered for receiver-operator characteristic (ROC) analysis. SCV CI correlated with IVC CI during relaxed breathing (R = .65, n = 36, p < .001) and forced inhalation (R = .47, n = 36, p = .0036). SCV CI < 22% and >33% corresponded to IVC CI < 20% and >50% suggesting hypervolemia (sensitivity/specificity: 72%) and hypovolemia (sensitivity/specificity: 78%), respectively. Moderate to severe tricuspid regurgitation (TR) compared to less than moderate TR was associated with lower SCV CI (medians: 12.4% vs. 25.3%, p = .022) and IVC CI (medians: 9.6% vs. 35.6%, p = .0012). SCV CI and IVC CI were not significantly different among chronic kidney disease stages. CONCLUSION In non-ventilated ADHF, SCV CI at 30-45° correlates with paired IVC CI, and may provide an alternative to IVC CI for assessment of relative intravascular volume, which may facilitate clinical management. Moderate to severe TR decreases SCV CI and IVC CI and may result in overestimation of relative intravascular volume.
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Affiliation(s)
- Yvonne E Kaptein
- Aurora Cardiovascular and Thoracic Services, Aurora Sinai/Aurora St. Luke's Medical Centers, Advocate Aurora Health, Milwaukee, Wisconsin, USA
| | - Elaine M Kaptein
- Department of Medicine, Division of Nephrology, University of Southern California, Los Angeles, California, USA
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