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Couture EJ, Calderone A, Zeng YH, Jarry S, Saade E, Hammoud A, Elmi-Sarabi M, Beaubien-Souligny W, Denault A. Instantaneous Right Ventricular to Pulmonary Artery Systolic Pressure Difference in Cardiac Surgery: A Retrospective and Prospective Cohort Study. Can J Cardiol 2024:S0828-282X(24)00849-3. [PMID: 39127257 DOI: 10.1016/j.cjca.2024.08.262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 07/31/2024] [Accepted: 08/02/2024] [Indexed: 08/12/2024] Open
Abstract
BACKGROUND During cardiac surgery, right ventricular outflow tract obstruction (RVOTO) is defined as an instantaneous pressure difference ≥ 6 mm Hg between right ventricular systolic pressure (RVSP) and pulmonary artery systolic pressure (PASP), for ≥ 5 minutes. Risk factors for RVOTO remain poorly understood. This cohort study was designed to evaluate the incidence, characteristics, and outcomes of the patients who experienced RVOTO. METHODS Instantaneous pressure difference between RVSP and PASP was measured by means of a pulmonary artery catheter with a right ventricular port during cardiac surgery from a retrospective (n = 295) and a prospective (n = 105) cohort. RESULTS From the retrospective and prospective cohorts, respectively, incidence of RVOTO was 30.2% and 36.2% before cardiopulmonary bypass (CPB) initiation and 43.7% and 47.6% after CPB separation. Before CPB initiation, patients with RVOTO had higher cardiac output (4.2 ± 1.5 vs 3.8 ± 1.1 L/min; P = 0.033) and received more inhaled epoprostenol (79% vs 61%; P = 0.005) and inotropes (66% vs 51%; P = 0.016) compared with those without RVOTO. After CPB separation, patients with RVOTO had higher heart rate (62 ± 15 vs 58 ± 13 beats/min; P = 0.011), cardiac output (4.1 ± 1.4 vs 3.7 ± 1.1 L/min; P = 0.003), and CPB duration (90 ± 45 vs 77 ± 30 min, P = 0.014), had lower fluid balance (758 ± 1123 vs 1063 ± 1089 mL; P = 0.021), and were more exposed to intratracheal milrinone (12% vs 4%; P = 0.015) compared with those without RVOTO. The time with persistent organ dysfunction (TPOD) at 28 days after surgery was similar among patients who had an RVOTO event, before CPB initiation or after CPB separation, compared with those who did not. CONCLUSIONS RVOTO is common in cardiac surgery. However, it is not associated with longer TPOD.
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Affiliation(s)
- Etienne J Couture
- Department of Anesthesiology, Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec City, Québec, Canada
| | - Alexander Calderone
- Department of Medicine, Jewish General Hospital, McGill University Health Center, Montréal, Québec, Canada
| | - Yu Hao Zeng
- Department of Family Medicine, Jewish General Hospital, McGill University Health Center, Montréal, Québec, Canada
| | - Stéphanie Jarry
- Department of Anesthesiology, Montréal Heart Institute, Université de Montréal, Montréal, Québec, Canada
| | - Elena Saade
- Department of Anesthesiology, Montréal Heart Institute, Université de Montréal, Montréal, Québec, Canada
| | - Ali Hammoud
- Division of Critical Care, Montréal Heart Institute, Université de Montréal, Montréal, Québec, Canada
| | - Mahsa Elmi-Sarabi
- Department of Anesthesiology, Montréal Heart Institute, Université de Montréal, Montréal, Québec, Canada
| | | | - André Denault
- Department of Anesthesiology, Montréal Heart Institute, Université de Montréal, Montréal, Québec, Canada; Division of Critical Care, Montréal Heart Institute, Université de Montréal, Montréal, Québec, Canada.
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Tanaka K, Matsumoto S, Yoneda N, Hattori Y, Nakamura K. Decrease in the Internal Cerebral Vein Pulsation With Improvement of Patent Ductus Arteriosus in Premature Infants at the Risk of Intraventricular Hemorrhage: Two Interesting Case Reports. Cureus 2024; 16:e65030. [PMID: 39165450 PMCID: PMC11334690 DOI: 10.7759/cureus.65030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/21/2024] [Indexed: 08/22/2024] Open
Abstract
Recently, augmenting the pulsation of the internal cerebral vein (ICV) has been reported to be a predictor of premature intraventricular hemorrhage (IVH); however, prophylaxis for IVH has not yet been established. Venous pulsation is a marker of central venous pressure elevation and may be improved after heart failure treatment. Herein, we report two cases of low-birth-weight infants (29 weeks and 31 weeks of gestational age), who exhibited improvements in ICV pulsation with relief of hemodynamically significant patent ductus arteriosus (hs-PDA) following indomethacin administration. ICV flow patterns were continuously flat early after birth. Thereafter, both patients demonstrated ICV pulsation augmentation with PDA progression and brain natriuretic peptide (BNP) elevation at 52 h and 39 h after birth (in infants born at 29 and 31 weeks of gestational age, respectively). After relieving PDA with indomethacin administration, both infants exhibited an improvement in ICV pulsation with decreased BNP levels. In both cases, ICV pulsation increased when PDA became hemodynamically significant with BNP elevation, and the pulsation improved by reduction in ductal flow with decreasing BNP when PDA was relieved by indomethacin administration. The association between hs-PDA and elevated ICV pulsation indicates that hs-PDA likely leads to heightened central venous pressure. Additionally, indomethacin treatment was effective in reducing the exacerbated ICV pulsation caused by heart failure due to hs-PDA. These cases suggest that treatment for heart failure might improve the augmented ICV pulsation, which is related to the development of premature IVH. However, further studies are needed to confirm this association.
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Prager R, Arntfield R, Wong MYS, Ball I, Lewis K, Rochwerg B, Basmaji J. Venous congestion in septic shock quantified with point-of-care ultrasound: a pilot prospective multicentre cohort study. Can J Anaesth 2024; 71:640-649. [PMID: 38548949 DOI: 10.1007/s12630-024-02717-1] [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: 08/17/2023] [Revised: 10/20/2023] [Accepted: 11/16/2023] [Indexed: 04/20/2024] Open
Abstract
PURPOSE Venous congestion is a pathophysiologic state that can result in organ dysfunction, particularly acute kidney injury (AKI). We sought to evaluate the feasibility of performing a definitive observational study to determine the impact of venous congestion quantified using point-of-care ultrasound (POCUS) in patients with septic shock. METHODS We conducted a prospective observational feasibility study at two intensive care units (ICUs). We recruited adult patients with septic shock within 12 hr of ICU admission. Using the validated Venous Excess Ultrasound Score (VEXUS), we quantified venous congestion on day 1 and day 3 of ICU admission. The primary feasibility outcome was successful completion rate of the two VEXUS scores. We performed a survival analysis to quantify the hazard of renal replacement therapy (RRT). RESULTS We enrolled 75 patients from January 2022 to January 2023. The success rate of completion for VEXUS scans was 94.5% (95% confidence interval [CI], 89.5 to 97.6). Severe venous congestion was present in 19% (14/75) of patients on ICU admission day 1 and in 16% (10/61) of patients on day 3. Venous congestion on ICU admission may be associated with a higher risk of requiring RRT (unadjusted hazard ratio, 3.35; 95% CI, 0.94 to 11.88; P = 0.06). CONCLUSIONS It is feasible to conduct a definitive observational study exploring the association between venous congestion quantified with POCUS and clinical outcomes in patients with septic shock. We hypothesize that venous congestion may be associated with an increased hazard of receiving RRT.
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Affiliation(s)
- Ross Prager
- Division of Critical Care, Department of Medicine, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada
| | - Robert Arntfield
- Division of Critical Care, Department of Medicine, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada
| | - Michelle Y S Wong
- Division of Critical Care, Department of Medicine, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada.
- London Health Sciences Centre, 800 Commissioners Rd. E., Room # A1-190A, London, ON, N6A 5W9, Canada.
| | - Ian Ball
- Division of Critical Care, Department of Medicine, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada
| | - Kimberley Lewis
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
- Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - Bram Rochwerg
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
- Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - John Basmaji
- Division of Critical Care, Department of Medicine, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada
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Galarza Barrachina L, Colinas Fernández L, Martín Bermúdez R, Fernández Galilea A, Martín-Villén L. Abdominal ultrasound and VExUS score in critical care. Med Intensiva 2023; 47:658-667. [PMID: 38783747 DOI: 10.1016/j.medine.2023.06.008] [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: 03/01/2023] [Accepted: 06/23/2023] [Indexed: 05/25/2024]
Abstract
The use of ultrasound while caring for critically ill patients has been increasing exponentially in the last two decades and now is an essential component of intensive care practice. Abdominal ultrasound is an established technique in other specialties, but its use in intensive care has lagged behind other ultrasound modalities. However, its potential role in the diagnosis and management of patients will make it an invaluable tool for intensivists. The main use of abdominal ultrasound at the bedside is for free fluid detection in trauma patients. But abdominal ultrasound can also help us diagnose patients with abdominal pain, hypovolemia or anuria, and it can guide us during procedures such as paracentesis or bladder catheter and gastric tube placement.
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Affiliation(s)
| | | | | | | | - Luis Martín-Villén
- UGC Cuidados Intensivos, Hospital Universitario Virgen del Rocío, Sevilla, Spain
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Athanassopoulos GD, Armenis I. A Glimpse for Venous Congestion Management in Pulmonary Hypertension by POCUS of Portal Vein Flow. Am J Cardiol 2023; 205:504-507. [PMID: 37661556 DOI: 10.1016/j.amjcard.2023.08.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 08/07/2023] [Indexed: 09/05/2023]
Affiliation(s)
| | - Iakovos Armenis
- Onassis Cardiac Surgery Center Cardiology Section, Athens, Greece
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Cheong I, Amador EDO, Gómez RA, Vilariño FMÁ, Furche MA, Tamagnone FM. Evaluating the Utility of Portal Vein Pulsatility Index for Detecting Fluid Unresponsiveness in the Intensive Care Unit. J Cardiothorac Vasc Anesth 2023:S1053-0770(23)00346-4. [PMID: 37330331 DOI: 10.1053/j.jvca.2023.05.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 05/11/2023] [Accepted: 05/22/2023] [Indexed: 06/19/2023]
Abstract
OBJECTIVE The primary aim of the authors' study was to evaluate the capacity of the portal vein pulsatility index (PVP) to detect fluid unresponsiveness in patients admitted to intensive care. DESIGN This was a retrospective, diagnostic accuracy study SETTING: At a tertiary medical-surgical intensive care unit in Buenos Aires, Argentina. PARTICIPANTS Patients were included during usual care in the intensive care unit, who were evaluated by ultrasonography for the flow of the portal vein, calculating their PVP prior to fluid expansion. INTERVENTIONS Patients who exhibited an increase of <15% in left ventricle outflow tract velocity-time integral after receiving 500 mL of Ringer Lactate were considered non-responders to fluids. MEASUREMENTS AND MAIN RESULTS The authors included a total of 63 patients between January 2022 and October 2022. The area under the receiver operating characteristic curve for PVP to predict fluid unresponsiveness was 0.708 (95% CI 0.580 to 0.816). A value of the PVP >32% predicted fluid unresponsiveness with a sensitivity of 30.8% (95% CI 17% to 47.6%) and specificity of 100% (95% CI 85.8 to 100). The positive predictive value was 100%, and the negative predictive value was 47.1% (95% CI 41.9% to 52.3%). CONCLUSIONS Although PVP has limited value as the sole indicator for fluid management decisions, it can be used as a stopping rule or combined with other diagnostic tests to improve the accuracy of fluid responsiveness assessment.
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Affiliation(s)
- Issac Cheong
- Department of critical care medicine, Sanatorio De los Arcos, Buenos Aires, Argentina; Argentinian Critical Care Ultrasonography Association, Buenos Aires, Argentina.
| | - Elías Daniel Olarte Amador
- Argentinian Critical Care Ultrasonography Association, Buenos Aires, Argentina; Department of critical care medicine, Clínica Pediátrica Sanitas, Bogotá, Colombia
| | - Raúl Alejandro Gómez
- Department of critical care medicine, Sanatorio De los Arcos, Buenos Aires, Argentina
| | | | - Mariano Andrés Furche
- Department of critical care medicine, Sanatorio De los Arcos, Buenos Aires, Argentina
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Elmi-Sarabi M, Jarry S, Couture EJ, Haddad F, Cogan J, Sweatt AJ, Rousseau-Saine N, Beaubien-Souligny W, Fortier A, Denault AY. Pulmonary Vasodilator Response of Combined Inhaled Epoprostenol and Inhaled Milrinone in Cardiac Surgical Patients. Anesth Analg 2023; 136:282-294. [PMID: 36121254 DOI: 10.1213/ane.0000000000006192] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Pulmonary hypertension (PH) and right ventricular (RV) dysfunction are major complications in cardiac surgery. Intraoperative management of patients at high risk of RV failure should aim to reduce RV afterload and optimize RV filling pressures, while avoiding systemic hypotension, to facilitate weaning from cardiopulmonary bypass (CPB). Inhaled epoprostenol and inhaled milrinone (iE&iM) administered in combination before CPB may represent an effective strategy to facilitate separation from CPB and reduce requirements for intravenous inotropes during cardiac surgery. Our primary objective was to report the rate of positive pulmonary vasodilator response to iE&iM and, second, how it relates to perioperative outcomes in cardiac surgery. METHODS This is a retrospective cohort study of consecutive patients with PH or RV dysfunction undergoing on-pump cardiac surgery at the Montreal Heart Institute from July 2013 to December 2018 (n = 128). iE&iM treatment was administered using an ultrasonic mesh nebulizer before the initiation of CPB. Demographic and baseline clinical data, as well as hemodynamic, intraoperative, and echocardiographic data, were collected using electronic records. An increase of 20% in the mean arterial pressure (MAP) to mean pulmonary artery pressure (MPAP) ratio was used to indicate a positive response to iE&iM. RESULTS In this cohort, 77.3% of patients were responders to iE&iM treatment. Baseline systolic pulmonary artery pressure (SPAP) (odds ratio [OR], 1.63; 95% confidence interval [CI], 1.24-2.16 per 5 mm Hg; P = .0006) was found to be a predictor of pulmonary vasodilator response, while a European System for Cardiac Operative Risk Evaluation (EuroSCORE II) score >6.5% was a predictor of nonresponse to treatment (≤6.5% vs >6.5% [reference]: OR, 5.19; 95% CI, 1.84-14.66; P = .002). Severity of PH was associated with a positive response to treatment, where a higher proportion of responders had MPAP values >30 mm Hg (42.4% responders vs 24.1% nonresponders; P = .0237) and SPAP values >55 mm Hg (17.2% vs 3.4%; P = .0037). Easier separation from CPB was also associated with response to iE&iM treatment (69.7% vs 58.6%; P = .0181). A higher proportion of nonresponders had a very difficult separation from CPB and required intravenous inotropic drug support compared to responders, for whom easy separation from CPB was more frequent. Use of intravenous inotropes after CPB was lower in responders to treatment (8.1% vs 27.6%; P = .0052). CONCLUSIONS A positive pulmonary vasodilator response to treatment with a combination of iE&iM before initiation of CPB was observed in 77% of patients. Higher baseline SPAP was an independent predictor of pulmonary vasodilator response, while EuroSCORE II >6.5% was a predictor of nonresponse to treatment.
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Affiliation(s)
- Mahsa Elmi-Sarabi
- From the Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - Stéphanie Jarry
- From the Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - Etienne J Couture
- Department of Anesthesiology, Department of Medicine, Division of Intensive Care Medicine, Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Quebec, Canada
| | - François Haddad
- Department of Cardiovascular Medicine, Stanford University, Stanford, California
| | - Jennifer Cogan
- From the Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - Andrew J Sweatt
- Division of Pulmonary, Allergy and Critical Care Medicine, Stanford University, Stanford, California
| | - Nicolas Rousseau-Saine
- From the Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - William Beaubien-Souligny
- Division of Nephrology, Centre Hospitalier de l'Université de Montréal (CHUM) and Innovation Hub, Research Centre CHUM, Montreal, Quebec, Canada
| | - Annik Fortier
- Department of Statistics, Montreal Health Innovations Coordinating Center, Montreal Heart Institute, Montreal, Quebec, Canada
| | - André Y Denault
- From the Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada.,Division of Critical Care, Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada
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Deschamps J, Denault A, Galarza L, Rola P, Ledoux-Hutchinson L, Huard K, Gebhard CE, Calderone A, Canty D, Beaubien-Souligny W. Venous Doppler to Assess Congestion: A Comprehensive Review of Current Evidence and Nomenclature. ULTRASOUND IN MEDICINE & BIOLOGY 2023; 49:3-17. [PMID: 36207224 DOI: 10.1016/j.ultrasmedbio.2022.07.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 06/29/2022] [Accepted: 07/21/2022] [Indexed: 06/16/2023]
Abstract
Organ congestion from venous hypertension is an important pathophysiological mechanism mediating organ injury in several clinical contexts including critical illness, congestive heart failure and end-stage chronic kidney disease. However, the practical evaluation of venous congestion is often challenging at the bedside because of the limitations of traditional methods. Point-of-care ultrasound (POCUS) enables the clinician to assess venous velocity profiles during the cardiac cycle using Doppler modalities. Venous Doppler profile abnormalities at multiple sites are detected when elevated venous pressure results in hemodynamic changes within the systemic venous circulation. The detection of these abnormal Doppler profiles may identify patients with clinically significant systemic venous congestion. These patients have been reported to be at increased risk of medical complications. Improving the evaluation of venous congestion may lead to individualized treatment and improved patient outcomes. In this review, we describe the physiologic principles necessary to understand venous Doppler assessment. We also propose a nomenclature for the description of venous Doppler profiles. Finally, we provide a narrative review of the current clinical evidence related to use of venous Doppler assessment in various clinical contexts.
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Affiliation(s)
- Jean Deschamps
- Division of Intensive Care, Centre Hospitalier de l'Université de Montréal, Montréal, Canada
| | - André Denault
- Department of Anesthesiology and Intensive Care, Montreal Heart Institute, Montréal, Canada
| | - Laura Galarza
- Department of Intensive Care, Hospital General Universitario de Castellón, Castellón de la Plana, Spain
| | - Philippe Rola
- Division of Intensive Care, Hôpital Santa-Cabrini, Montréal, Canada
| | | | | | | | | | - David Canty
- Department of Surgery (Royal Melbourne Hospital), University of Melbourne, Parkville, Australia; Department of Anaesthesia and Pain Management, Royal Melbourne Hospital, Parkville, Australia; Department of Medicine and Nursing (Monash Medical Centre), Monash University, Clayton, Australia
| | - William Beaubien-Souligny
- Division of Nephrology, Centre Hospitalier de l'Université de Montréal, Montréal, Canada; Innovation Hub, Centre de Recherche du CHUM, Montréal, Canada.
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Elmi-Sarabi M, Couture E, Jarry S, Saade E, Calderone A, Potes C, Denault A. Inhaled Epoprostenol and Milrinone Effect on Right Ventricular Pressure Waveform Monitoring. Can J Cardiol 2022; 39:474-482. [PMID: 36528279 DOI: 10.1016/j.cjca.2022.12.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 11/10/2022] [Accepted: 12/03/2022] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Pulmonary hypertension (PH) and right ventricular (RV) dysfunction are major complications in cardiac surgery. This study aimed to evaluate the change in RV pressure waveform in patients receiving a combination of inhaled epoprostenol and inhaled milrinone (iE&iM) before cardiopulmonary bypass (CPB) and to assess the safety of this approach with a matched case-control group. METHODS A prospective single-centre cohort study of adult patients undergoing cardiac surgery administered iE&iM through an ultrasonic mesh nebulizer. RV pressure waveform monitoring was obtained by continuously transducing the RV port of the pulmonary artery (PA) catheter. RESULTS The final analysis included 26 patients receiving iE&iM. There was a significant drop in mean PA pressure (MPAP) (-4.8 ± 8.7, P = 0.010), systolic PA pressure (SPAP) (-8.2 ± 12.8, P = 0.003), RV end-diastolic pressure (RVEDP) (-2.1 ± 2.8, P < 0.001) and RV diastolic pressure gradient (RVDPG) (-1.7 ± 1.4, P < 0.001) after 17 ± 9 minutes of iE&iM administration. Patients also had a significant increase in RV outflow tract (RVOT) gradient (3.7 ± 4.7, P < 0.001), RV maximal rate of pressure rise during early systole (dP/dt max) (68.3 ± 144.7, P = 0.024), and left ventricular (LV) dP/dt max (66.4 ± 90.1, P < 0.001). Change in RVOT gradient was only observed in those with a positive pulmonary vasodilator response to treatment. Treatment with iE&iM did not present adverse effects when compared with a matched case-control group. CONCLUSIONS Coadministration of iE&iM in cardiac surgery patients presenting with PH or signs of RV dysfunction is a safe and effective treatment approach in improving RV function. Appearance of a transient increase in RVOT gradient after iE&iM could be useful to predict response to treatment.
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Affiliation(s)
- Mahsa Elmi-Sarabi
- Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montréal, Québec, Canada
| | - Etienne Couture
- Department of Anesthesiology, Department of Medicine, Division of Intensive Care Medicine, Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec City, Québec, Canada
| | - Stéphanie Jarry
- Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montréal, Québec, Canada
| | - Elena Saade
- Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montréal, Québec, Canada
| | - Alexander Calderone
- Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montréal, Québec, Canada
| | | | - André Denault
- Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montréal, Québec, Canada.
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10
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Gourdeau S, Beaubien-Souligny W, Denault AY. Point-of-Care Ultrasound in an Unstable Patient After Cardiac Surgery. Chest 2022; 162:e325-e330. [PMID: 36494134 DOI: 10.1016/j.chest.2021.12.675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 08/31/2021] [Accepted: 12/20/2021] [Indexed: 12/12/2022] Open
Affiliation(s)
- Simon Gourdeau
- Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, QC, Canada
| | - William Beaubien-Souligny
- Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, QC, Canada; Department of Nephrology, Centre Hospitalier de l'Université de Montréal, Montreal, QC, Canada
| | - André Y Denault
- Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, QC, Canada; Intensive Care Unit, Montreal Heart Institute, Université de Montréal, Montreal, QC, Canada.
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Calderone A, Jarry S, Couture EJ, Brassard P, Beaubien-Souligny W, Momeni M, Liszkowski M, Lamarche Y, Shaaban-Ali M, Matta B, Rochon A, Lebon JS, Ayoub C, Martins MR, Courbe A, Deschamps A, Denault AY. Early Detection and Correction of Cerebral Desaturation With Noninvasive Oxy-Hemoglobin, Deoxy-Hemoglobin, and Total Hemoglobin in Cardiac Surgery: A Case Series. Anesth Analg 2022; 135:1304-1314. [PMID: 36097147 DOI: 10.1213/ane.0000000000006155] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Regional cerebral oxygen saturation (rS o2 ) obtained from near-infrared spectroscopy (NIRS) provides valuable information during cardiac surgery. The rS o2 is calculated from the proportion of oxygenated to total hemoglobin in the cerebral vasculature. Root O3 cerebral oximetry (Masimo) allows for individual identification of changes in total (ΔcHbi), oxygenated (Δ o2 Hbi), and deoxygenated (ΔHHbi) hemoglobin spectral absorptions. Variations in these parameters from baseline help identify the underlying mechanisms of cerebral desaturation. This case series represents the first preliminary description of Δ o2 Hbi, ΔHHbi, and ΔcHbi variations in 10 cardiac surgical settings. Hemoglobin spectral absorption changes can be classified according to 3 distinct variations of cerebral desaturation. Reduced cerebral oxygen content or increased cerebral metabolism without major blood flow changes is reflected by decreased Δ o2 Hbi, unchanged ΔcHbi, and increased ΔHHbi Reduced cerebral arterial blood flow is suggested by decreased Δ o2 Hbi and ΔcHbi, with variable ΔHHbi. Finally, acute cerebral congestion may be suspected with increased ΔHHbi and ΔcHbi with unchanged Δ o2 Hbi. Cerebral desaturation can also result from mixed mechanisms reflected by variable combination of those 3 patterns. Normal cerebral saturation can occur, where reduced cerebral oxygen content such as anemia is balanced by a reduction in cerebral oxygen consumption such as during hypothermia. A summative algorithm using rS o2 , Δ o2 Hbi, ΔHHbi, and ΔcHbi is proposed. Further explorations involving more patients should be performed to establish the potential role and limitations of monitoring hemoglobin spectral absorption signals.
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Affiliation(s)
- Alexander Calderone
- From the Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - Stéphanie Jarry
- From the Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - Etienne J Couture
- Departments of †Anesthesiology.,Medicine, Division of Intensive Care Medicine, Institut Universitaire de Cardiologie et de Pneumologie de Québec, Quebec, Quebec, Canada.,Institut Universitaire de Cardiologie et de Pneumologie de Quebec, Université Laval, Quebec, Quebec, Canada
| | - Patrice Brassard
- Institut Universitaire de Cardiologie et de Pneumologie de Quebec, Université Laval, Quebec, Quebec, Canada.,Department of Kinesiology, Faculty of Medicine, Université Laval, Quebec, Quebec, Canada
| | - William Beaubien-Souligny
- Department of Medicine, Division of Nephrology, Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada
| | - Mona Momeni
- Department of Acute Medicine, Cardiothoracic and Vascular Anesthesia Section, Cliniques Universitaires Saint-Luc, UC Louvain, Brussels, Belgium
| | - Mark Liszkowski
- Department of Medicine, Cardiology Division, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada.,Critical Care Division, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - Yoan Lamarche
- Critical Care Division, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada.,Department of Cardiac Surgery, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - Mohamed Shaaban-Ali
- Critical Care Division, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - Basil Matta
- Neurosciences Critical Care Unit, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
| | - Antoine Rochon
- From the Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - Jean-Sébastien Lebon
- From the Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - Christian Ayoub
- From the Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - Maria Rosal Martins
- From the Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - Athanase Courbe
- From the Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - Alain Deschamps
- From the Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - André Y Denault
- From the Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada.,Critical Care Division, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
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12
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Argaiz ER, Rola P, Haycock KH, Verbrugge FH. Fluid management in acute kidney injury: from evaluating fluid responsiveness towards assessment of fluid tolerance. EUROPEAN HEART JOURNAL. ACUTE CARDIOVASCULAR CARE 2022; 11:786-793. [PMID: 36069621 DOI: 10.1093/ehjacc/zuac104] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Accepted: 08/23/2022] [Indexed: 06/15/2023]
Abstract
Despite the widespread use of intravenous fluids in acute kidney injury (AKI), solid evidence is lacking. Intravenous fluids mainly improve AKI due to true hypovolaemia, which is difficult to discern at the bedside unless it is very pronounced. Empiric fluid resuscitation triggered only by elevated serum creatinine levels or oliguria is frequently misguided, especially in the presence of fluid intolerance syndromes such as increased extravascular lung water, capillary leak, intra-abdominal hypertension, and systemic venous congestion. While fluid responsiveness tests clearly identify patients who will not benefit from fluid administration (i.e. those without an increase in cardiac output), the presence of fluid responsiveness does not guarantee that fluid therapy is indicated or even safe. This review calls for more attention to the concept of fluid tolerance, incorporating it into a practical algorithm with systematic venous Doppler ultrasonography assessment to use at the bedside, thereby lowering the risk of detrimental kidney congestion in AKI.
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Affiliation(s)
- Eduardo R Argaiz
- Department of Nephrology and Mineral Metabolism, National Institute of Medical Sciences and Nutrition Salvador Zubirán, Mexico City, Mexico
| | - Philippe Rola
- Intensive Care Unit, Santa Cabrini Hospital, Montréal, QC, Canada
| | - Korbin H Haycock
- Department of Emergency Medicine, Loma Linda University Health, Loma Linda, CA, USA
| | - Frederik H Verbrugge
- Centre for Cardiovascular Diseases, University Hospital Brussels, Laarbeeklaan 101, 1090 Jette, Belgium
- Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Belgium
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13
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Kattan E, Castro R, Miralles-Aguiar F, Hernández G, Rola P. The emerging concept of fluid tolerance: A position paper. J Crit Care 2022; 71:154070. [PMID: 35660844 DOI: 10.1016/j.jcrc.2022.154070] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 04/11/2022] [Accepted: 04/13/2022] [Indexed: 12/14/2022]
Abstract
Fluid resuscitation is a core component of emergency and critical care medicine. While the focus of clinicians has largely been on detecting patients who would respond to fluid therapy, relatively little work has been done on assessing patients' tolerance to this therapy. In this article we seek to review the concept of fluid tolerance, propose a working definition, and introduce relevant clinical signals by which physicians can assess fluid tolerance, hopefully becoming a starting point for further research.
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Affiliation(s)
- Eduardo Kattan
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Chile
| | - Ricardo Castro
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Chile
| | | | - Glenn Hernández
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Chile
| | - Philippe Rola
- Chief of Service, Intensive Care Unit, Hopital Santa Cabrini, CIUSSS EMTL, Montreal, Canada.
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14
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Hammoud A, Saade E, Jarry S, Baelen S, Couture EJ, Beaubien-Souligny W, Denault AY. Pulsatile Femoral Vein Doppler and Congestive Delirium, What Is the Relationship?: A Case Report. A A Pract 2022; 16:e01627. [PMID: 36599030 DOI: 10.1213/xaa.0000000000001627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Delirium is common in patients undergoing cardiac surgery, and venous congestion has been reported as an important risk factor. We report a 69-year-old patient who developed postoperative delirium in the intensive care unit following aortic valve replacement surgery. The postoperative course was complicated by delirium for which echographic signs of venous congestion on the portal and the renal but also the femoral veins and their resolution correlated with the course of delirium. The use of common femoral vein Doppler as a simple bedside technique to predict and identify congestive delirium has not been reported before.
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Affiliation(s)
- Ali Hammoud
- From the Department of Nursing, Université de Montréal, Montreal, Quebec, Canada.,Department of Medicine, Intensive Care Unit and Research Centre, Montreal Heart Institute, Montreal, Quebec, Canada.,Biomedical Science Program
| | - Elena Saade
- Biomedical Science Program.,Department of Medicine, Université de Montréal, Montreal, Quebec, Canada.,Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - Stéphanie Jarry
- Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada.,Pharmacology Program, Université de Montréal, Montreal, Quebec, Canada
| | - Sophie Baelen
- From the Department of Nursing, Université de Montréal, Montreal, Quebec, Canada.,Department of Medicine, Intensive Care Unit and Research Centre, Montreal Heart Institute, Montreal, Quebec, Canada
| | - Etienne J Couture
- Division of Intensive Care Medicine, Institut universitaire de cardiologie et de pneumologie de Québec, Université Laval, Quebec City, Quebec, Canada
| | - William Beaubien-Souligny
- Department of Medicine, Nephrology Division, Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada
| | - André Y Denault
- Department of Medicine, Intensive Care Unit and Research Centre, Montreal Heart Institute, Montreal, Quebec, Canada.,Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada.,Division of Critical Care, Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada
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15
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Denault A, Couture EJ, De Medicis É, Shim JK, Mazzeffi M, Henderson RA, Langevin S, Dhawan R, Michaud M, Guensch DP, Berger D, Erb JM, Gebhard CE, Royse C, Levy D, Lamarche Y, Dagenais F, Deschamps A, Desjardins G, Beaubien-Souligny W. Perioperative Doppler ultrasound assessment of portal vein flow pulsatility in high-risk cardiac surgery patients: a multicentre prospective cohort study. Br J Anaesth 2022; 129:659-669. [DOI: 10.1016/j.bja.2022.07.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 07/25/2022] [Accepted: 07/26/2022] [Indexed: 11/26/2022] Open
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16
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New developments in the understanding of right ventricular function in acute care. Curr Opin Crit Care 2022; 28:331-339. [PMID: 35653255 DOI: 10.1097/mcc.0000000000000946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW Right ventricular dysfunction has an important impact on the perioperative course of cardiac surgery patients. Recent advances in the detection and monitoring of perioperative right ventricular dysfunction will be reviewed here. RECENT FINDINGS The incidence of right ventricular dysfunction in cardiac surgery has been associated with unfavorable outcomes. New evidence supports the use of a pulmonary artery catheter in cardiogenic shock. The possibility to directly measure right ventricular pressure by transducing the pacing port has expanded its use to track changes in right ventricular function and to detect right ventricular outflow tract obstruction. The potential role of myocardial deformation imaging has been raised to detect patients at risk of postoperative complications. SUMMARY Perioperative right ventricular function monitoring is based on echocardiographic and extra-cardiac flow evaluation. In addition to imaging modalities, hemodynamic evaluation using various types of pulmonary artery catheters can be achieved to track changes rapidly and quantitatively in right ventricular function perioperatively. These monitoring techniques can be applied during and after surgery to increase the detection rate of right ventricular dysfunction. All this to improve the treatment of patients presenting early signs of right ventricular dysfunction before systemic organ dysfunction ensue.
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17
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Abou-Arab O, Beyls C, Moussa MD, Huette P, Beaudelot E, Guilbart M, De Broca B, Yzet T, Dupont H, Bouzerar R, Mahjoub Y. Portal Vein Pulsatility Index as a Potential Risk of Venous Congestion Assessed by Magnetic Resonance Imaging: A Prospective Study on Healthy Volunteers. Front Physiol 2022; 13:811286. [PMID: 35574483 PMCID: PMC9101294 DOI: 10.3389/fphys.2022.811286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 03/18/2022] [Indexed: 11/25/2022] Open
Abstract
High values of the portal vein pulsatility index (PI) have been associated with adverse outcomes in perioperative or critically ill patients. However, data on dynamic changes of PI related to fluid infusion are scarce. We aimed to determine if dynamic changes in PI are associated with the fluid challenge (FC). To address this challenge, we conducted a prospective single-center study. The population study included healthy subjects. FC consisted in the administration of 500 ml of Ringer lactate infusion over 5 min. The portal blood flow and PI were assessed by magnetic resonance imaging. The responsiveness to FC was defined as an increase in the cardiac stroke volume of at least 10% as assessed by echocardiography. We included 24 healthy volunteers. A total of fourteen (58%) subjects were responders, and 10 (42%) were non-responders. In the responder group, FC induced a significant increase in portal blood flow from 881 (762–1,001) at the baseline to 1,010 (778–1,106) ml min−1 (p = 0.005), whilst PI remained stable (from 31 [25–41] to 35 (25–42) %; p = 0.12). In the non-responder group, portal blood flow remained stable after FC (from 1,042 to 1,034 ml min−1; p = 0.084), whereas PI significantly increased from 32 (22–40) to 48% *(25–85) after FC (p = 0.027). PI was negatively correlated to portal blood flow (Rho coefficient = −0.611; p = 0.002). To conclude, PI might be a sensitive marker of early congestion in healthy subjects that did not respond to FC. This finding requires further validation in clinical settings with a larger sample size.
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Affiliation(s)
- Osama Abou-Arab
- Anesthesia and Critical Care Department, Amiens Hospital University, Amiens, France
- *Correspondence: Osama Abou-Arab,
| | - Christophe Beyls
- Anesthesia and Critical Care Department, Amiens Hospital University, Amiens, France
| | | | - Pierre Huette
- Anesthesia and Critical Care Department, Amiens Hospital University, Amiens, France
| | - Elodie Beaudelot
- Anesthesia and Critical Care Department, Amiens Hospital University, Amiens, France
| | - Mathieu Guilbart
- Anesthesia and Critical Care Department, Amiens Hospital University, Amiens, France
| | - Bruno De Broca
- Anesthesia and Critical Care Department, Amiens Hospital University, Amiens, France
| | - Thierry Yzet
- Department of Radiology, Amiens Picardy University Hospital, Amiens, France
| | - Hervé Dupont
- Anesthesia and Critical Care Department, Amiens Hospital University, Amiens, France
| | - Roger Bouzerar
- Department of Biophysics and image processing, Amiens Picardy University Hospital, Amiens, France
| | - Yazine Mahjoub
- Anesthesia and Critical Care Department, Amiens Hospital University, Amiens, France
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18
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Jarry S, Halley I, Calderone A, Momeni M, Deschamps A, Richebé P, Beaubien-Souligny W, Denault A, Couture EJ. Impact of Processed Electroencephalography in Cardiac Surgery: A Retrospective Analysis. J Cardiothorac Vasc Anesth 2022; 36:3517-3525. [PMID: 35618594 DOI: 10.1053/j.jvca.2022.03.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 03/24/2022] [Accepted: 03/27/2022] [Indexed: 11/11/2022]
Abstract
OBJECTIVE The use of brain function monitoring with processed electroencephalography (pEEG) during cardiac surgery is gaining interest for the optimization of hypnotic agent delivery during the maintenance of anesthesia. The authors sought to determine whether the routine use of pEEG-guided anesthesia is associated with a reduction of hemodynamic instability during cardiopulmonary bypass (CPB) separation and subsequently reduces vasoactive and inotropic requirements in the intensive care unit. DESIGN This is a retrospective cohort study based on an existing database. SETTING A single cardiac surgical center. PARTICIPANTS Three hundred patients undergoing cardiac surgery, under CPB, between December 2013 and March 2020. INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS One hundred and fifty patients had pEEG-guided anesthesia, and 150 patients did not have a pEEG-guided anesthesia. Multiple logistic regression demonstrated that pEEG-guided anesthesia was not associated with a successful CPB separation (p = 0.12). However, the use of pEEG-guided anesthesia reduced by 57% the odds of being in a higher category for vasoactive inotropic score compared to patients without pEEG (odds ratio = 0.43; 95% confidence interval: 0.26-0.73; p = 0.002). Duration of mechanical ventilation, fluid balance, and blood losses were also reduced in the pEEG anesthesia-guided group (p < 0.003), but there were no differences in organ dysfunction duration and mortality. CONCLUSION During cardiac surgery, pEEG-guided anesthesia allowed a reduction in the use of inotropic or vasoactive agents at arrival in the intensive care unit. However, it did not facilitate weaning from CPB compared to a group where pEEG was unavailable. A pEEG-guided anesthetic management could promote early vasopressor weaning after cardiac surgery.
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Affiliation(s)
- Stéphanie Jarry
- Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Canada
| | - Isabelle Halley
- Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Canada
| | - Alexander Calderone
- Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Canada
| | - Mona Momeni
- Department of Anesthesiology, Cliniques Universitaires Saint-Luc, UC Louvain, Institut de Recherche Expérimentale et Clinique, Brussels, Belgium
| | - Alain Deschamps
- Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Canada
| | - Philippe Richebé
- Department of Anesthesiology and Pain Medicine, Maisonneuve-Rosemont Hospital, CIUSSS de l'Est de l'Île de Montréal, Université de Montréal, Montreal, Canada
| | | | - André Denault
- Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Canada; Department of Critical Care, Centre Hospitalier de l'Université de Montréal, Montreal, Canada.
| | - Etienne J Couture
- Department of Anesthesiology and Department of Medicine, Division of Intensive Care Medicine, Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Quebec City, Canada
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19
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Brain arteriovenous malformations and dural arteriovenous fistulas with extensive venous congestive encephalopathy. Acta Neurol Belg 2022; 122:1-9. [PMID: 34095979 DOI: 10.1007/s13760-021-01719-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 05/31/2021] [Indexed: 10/21/2022]
Abstract
In brain arteriovenous malformations (BAVMs) and dural arteriovenous fistulas (DAVFs), when too much blood is drained into the venous system, extensive venous congestive encephalopathy (EVCE) can appear. EVCE in BAVMs and DAVFs can be divided into acute and chronic stages. BAVMs and DAVFs have their own classification systems, but EVCE is not considered in these classification systems and needs to be emphasized. EVCE in BAVMs and DAVFs has unique clinical and imaging features. The clinical presentations usually consist of headache, cognitive impairment, and focal deficits. EVCE in BAVMs and DAVFs has several imaging features, and the venous congestion seen on computed tomography angiography and magnetic resonance angiography can present with the angiographic features of venous reflux and pseudophlebitic pattern. Digital subtraction angiography is the gold standard for the diagnosis. Delayed circulation time is observed. Tortuous, dilated, and engorged veins can be seen. For EVCE from BAVMs and DAVFs, prompt treatment is warranted due to the impairment of extensive brain tissue. Treatments include endovascular treatment (EVT), open surgery, and radiosurgery. EVT is often the primary treatment. Complete elimination in one stage is often difficult. Most of the time, staged treatment has to be chosen. No matter at the acute or chronic stage, aggressive treatment is recommended.
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20
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Torres-Arrese M, García de Casasola-Sánchez G, Méndez-Bailón M, Montero-Hernández E, Cobo-Marcos M, Rivas-Lasarte M, Caurcel-Díaz L, Rodríguez-Fuertes P, Villén-Villegas T, Tung-Chen Y. Usefulness of Serial Multiorgan Point-of-Care Ultrasound in Acute Heart Failure: Results from a Prospective Observational Cohort. MEDICINA (KAUNAS, LITHUANIA) 2022; 58:124. [PMID: 35056432 PMCID: PMC8780545 DOI: 10.3390/medicina58010124] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/06/2022] [Accepted: 01/10/2022] [Indexed: 11/30/2022]
Abstract
Background and Objectives: Acute heart failure (AHF) is a common disease and a cause of high morbidity and mortality, constituting a major health problem. The main purpose of this study was to determine the impact of multiorgan ultrasound in identifying pulmonary hypertension (PH), a major prognostic factor in patients admitted due to AHF, and assess whether there are significant changes in the venous excess ultrasonography (VE × US) score or femoral vein Doppler at discharge. Materials and Methods: Patients were evaluated with a standard protocol of lung ultrasound, echocardiography, inferior vena cava (IVC) and hepatic, portal, intra-renal and femoral vein Doppler flow patterns at admission and on the day of discharge. Results: Thirty patients were enrolled during November 2021. The mean age was seventy-nine years (Standard Deviation-SD 13.4). Seven patients (23.3%) had a worsening renal function during hospitalization. Regarding ultrasound findings, VE × US score was calculated at admission and at discharge, unexpectedly remaining unchanged or even worsened (21 patients, 70.0%). The area under the curve for the lung score was 83.9% (p = 0.008), obtaining a cutoff value of 10 that showed a sensitivity of 82.6% and a specificity of 71.4% in the identification of intermediate and high PH. It was possible to monitor significant changes between both exams on the lung score (16.5 vs. 9.3; p < 0.001), improvement in the hepatic vein Doppler pattern (2.4 vs. 2.1; p = 0.002), improvement in portal vein Doppler pattern (1.7 vs. 1.4; p = 0.023), without significant changes in the intra-renal vein Doppler pattern (1.70 vs. 1.57; p = 0.293), VE × US score (1.3 vs. 1.1; p = 0.501), femoral vein Doppler pattern (2.4 vs. 2.1; p = 0.161) and IVC collapsibility (2.0 vs. 2.1; p = 0.420). Conclusions: Our study results suggest that performing serial multiorgan Point-of-Care ultrasound can help us to better identify high and intermediate probability of PH patients with AHF. Currently proposed multi-organ, venous Doppler scanning protocols, such as the VE × US score, should be further studied before expanding its use in AHF patients.
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Affiliation(s)
- Marta Torres-Arrese
- Department of Emergency Medicine, Hospital Universitario Fundación de Alcorcón, 28922 Madrid, Spain; (M.T.-A.); (G.G.d.C.-S.)
| | | | - Manuel Méndez-Bailón
- Department of Internal Medicine, Hospital Clínico San Carlos, 28040 Madrid, Spain;
| | - Esther Montero-Hernández
- Department of Internal Medicine, Hospital Universitario Puerta de Hierro Majadahonda, 28222 Madrid, Spain;
| | - Marta Cobo-Marcos
- Department of Cardiology, Hospital Universitario Puerta de Hierro, CIBERCV, Majadahonda, 28222 Madrid, Spain; (M.C.-M.); (M.R.-L.)
| | - Mercedes Rivas-Lasarte
- Department of Cardiology, Hospital Universitario Puerta de Hierro, CIBERCV, Majadahonda, 28222 Madrid, Spain; (M.C.-M.); (M.R.-L.)
| | - Luis Caurcel-Díaz
- Department of Palliative Medicine, Hospital 12 de Octubre, 28041 Madrid, Spain;
| | | | | | - Yale Tung-Chen
- Department of Internal Medicine, Hospital Universitario Puerta de Hierro Majadahonda, 28222 Madrid, Spain;
- Department of Medicine, Universidad Alfonso X, 28691 Madrid, Spain
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21
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Characteristics and Outcomes for Low-Risk Hospital Admissions Admitted to the ICU: A Multisite Cohort Study. Crit Care Explor 2021; 3:e0596. [PMID: 34909699 PMCID: PMC8663905 DOI: 10.1097/cce.0000000000000596] [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: 12/23/2022] Open
Abstract
Supplemental Digital Content is available in the text. IMPORTANCE: Prognostication following ICU admission can often be determined based on known risk factors, including demographics and illness severity; however, little is known about outcomes of patients deemed to be “low-risk” at the time of hospital admission who subsequently are admitted to the ICU. OBJECTIVES: The objectives of this study were to determine the characteristics, outcomes, and costs for patients requiring ICU admission despite having lower predicted mortality when they were admitted to the hospital. DESIGN, SETTING, AND PARTICIPANTS: In this historical cohort study, we used a prospectively maintained ICU registry that included all ICU admissions to The Ottawa Hospital for patients 18 years or older from January 2011 to December 2016. We classified patients as low-risk using the Hospital-patient 1-year Mortality Risk at admission score, a hospital admission score validated to predict 1-year mortality. MAIN OUTCOMES AND MEASURES: The primary outcome was inhospital mortality. Secondary outcomes included adverse events, resource utilization, and costs. RESULTS: Of the 17,173 total ICU patients, 3,445 (20.1%) were classified as low-risk at hospital admission. Low-risk patients were younger (48.7 vs 67.5 yr; p < 0.001) and had a lower Multiple Organ Dysfunction Score (2.37 vs 4.14; p < 0.001). Mortality for low-risk patients was significantly lower than for non–low-risk patients (4.1% vs 25.4%; p < 0.001). For low-risk patients, multivariable logistic regression showed mortality was independently associated with older age (odds ratio, 1.02 per 1 yr; 95% CI, 1.00–1.03 per 1 yr), Multiple Organ Dysfunction Score (odds ratio, 1.42 per 1 point; 95% CI, 1.31–1.54 per 1 point), fluid management adverse events (odds ratio, 2.84; 95% CI, 1.29–6.25), hospital-acquired infections (odds ratio, 1.60; 95% CI, 1.02–2.51), and mechanical ventilation (odds ratio, 1.98; 95% CI, 1.20–3.26). CONCLUSIONS AND RELEVANCE: Despite their robust premorbid status, low-risk patients admitted to the ICU had significant inhospital mortality. Fluid management adverse events, hospital-associated infections, multiple organ dysfunction, and mechanical ventilation are important prognostic factors for low-risk patients.
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22
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Huette P, Guinot PG, Haye G, Moussa MD, Beyls C, Guilbart M, Martineau L, Dupont H, Mahjoub Y, Abou-Arab O. Portal Vein Pulsatility as a Dynamic Marker of Venous Congestion Following Cardiac Surgery: An Interventional Study Using Positive End-Expiratory Pressure. J Clin Med 2021; 10:jcm10245810. [PMID: 34945106 PMCID: PMC8706622 DOI: 10.3390/jcm10245810] [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] [Received: 11/16/2021] [Revised: 12/07/2021] [Accepted: 12/10/2021] [Indexed: 12/22/2022] Open
Abstract
We aimed to assess variations in the portal vein pulsatility index (PI) during mechanical ventilation following cardiac surgery. Method. After ethical approval, we conducted a prospective monocentric study at Amiens University Hospital. Patients under mechanical ventilation following cardiac surgery were enrolled. Doppler evaluation of the portal vein (PV) was performed by transthoracic echography. The maximum velocity (VMAX) and minimum velocity (VMIN) of the PV were measured in pulsed Doppler mode. The PI was calculated using the following formula (VMAX − VMIN)/(VMax). A positive end-expiratory pressure (PEEP) incremental trial was performed from 0 to 15 cmH2O, with increments of 5 cmH2O. The PI (%) was assessed at baseline and PEEP 5, 10, and 15 cmH2O. Echocardiographic and hemodynamic parameters were recorded. Results. In total, 144 patients were screened from February 2018 to March 2019 and 29 were enrolled. Central venous pressure significantly increased for each PEEP increment. Stroke volumes were significantly lower after PEEP incrementation, with 52 mL (50–55) at PEEP 0 cmH2O and 30 mL (25–45) at PEEP 15 cmH2O, (p < 0.0001). The PI significantly increased with PEEP incrementation, from 9% (5–15) at PEEP 0 cmH2O to 15% (5–22) at PEEP 5 cmH2O, 34% (23–44) at PEEP 10 cmH2O, and 45% (25–49) at PEEP 15 cmH2O (p < 0.001). Conclusion. In the present study, PI appears to be a dynamic marker of the interaction between mechanical ventilation and right heart pressure after cardiac surgery. The PI could be a useful noninvasive tool to monitor venous congestion associated with mechanical ventilation.
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Affiliation(s)
- Pierre Huette
- Anesthesia and Critical Care Medicine Department, Amiens Hospital University, 80000 Amiens, France; (G.H.); (C.B.); (M.G.); (L.M.); (H.D.); (Y.M.); (O.A.-A.)
- Correspondence:
| | - Pierre-Grégoire Guinot
- Anesthesia and Critical Care Medicine Department, Dijon Hospital University, 21000 Dijon, France;
| | - Guillaume Haye
- Anesthesia and Critical Care Medicine Department, Amiens Hospital University, 80000 Amiens, France; (G.H.); (C.B.); (M.G.); (L.M.); (H.D.); (Y.M.); (O.A.-A.)
| | - Mouhamed Djahoum Moussa
- Anesthesia and Critical Care Medicine Department, Lille Hospital University, 59000 Lille, France;
| | - Christophe Beyls
- Anesthesia and Critical Care Medicine Department, Amiens Hospital University, 80000 Amiens, France; (G.H.); (C.B.); (M.G.); (L.M.); (H.D.); (Y.M.); (O.A.-A.)
| | - Mathieu Guilbart
- Anesthesia and Critical Care Medicine Department, Amiens Hospital University, 80000 Amiens, France; (G.H.); (C.B.); (M.G.); (L.M.); (H.D.); (Y.M.); (O.A.-A.)
| | - Lucie Martineau
- Anesthesia and Critical Care Medicine Department, Amiens Hospital University, 80000 Amiens, France; (G.H.); (C.B.); (M.G.); (L.M.); (H.D.); (Y.M.); (O.A.-A.)
| | - Hervé Dupont
- Anesthesia and Critical Care Medicine Department, Amiens Hospital University, 80000 Amiens, France; (G.H.); (C.B.); (M.G.); (L.M.); (H.D.); (Y.M.); (O.A.-A.)
| | - Yazine Mahjoub
- Anesthesia and Critical Care Medicine Department, Amiens Hospital University, 80000 Amiens, France; (G.H.); (C.B.); (M.G.); (L.M.); (H.D.); (Y.M.); (O.A.-A.)
| | - Osama Abou-Arab
- Anesthesia and Critical Care Medicine Department, Amiens Hospital University, 80000 Amiens, France; (G.H.); (C.B.); (M.G.); (L.M.); (H.D.); (Y.M.); (O.A.-A.)
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Galindo P, Gasca C, Argaiz ER, Koratala A. Point of care venous Doppler ultrasound: Exploring the missing piece of bedside hemodynamic assessment. World J Crit Care Med 2021; 10:310-322. [PMID: 34888157 PMCID: PMC8613717 DOI: 10.5492/wjccm.v10.i6.310] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/28/2021] [Accepted: 09/30/2021] [Indexed: 02/06/2023] Open
Abstract
Accurate assessment of the hemodynamic status is vital for appropriate management of patients with critical illness. As such, there has been a constant quest for reliable and non-invasive bedside tools to assess and monitor circulatory status in order to ensure end-organ perfusion. In the recent past, point of care ultrasonography (POCUS) has emerged as a valuable adjunct to physical examination in various specialties, which basically is a clinician-performed bedside ultrasound to answer focused questions. POCUS allows visualization of the internal anatomy and flow dynamics in real time, guiding apt interventions. While both arterial (forward flow) and venous (organ outflow or afterload) limbs of hemodynamic circuit are important for tissue perfusion, the venous side remains relatively under-explored. With recent data underscoring the deleterious consequences of iatrogenic volume overload, objective evaluation of venous congestion is gaining attention. Bedside Doppler ultrasound serves this purpose and aids in diagnosing and monitoring the congestion/venous blood flow pattern. In this article, we summarize the rationale for integrating this technology into routine care of patients with volume-related disorders, discuss the normal and abnormal waveforms, limitations, and future directions.
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Affiliation(s)
- Pablo Galindo
- Department of Nephrology, Centro Médico ISSEMYM, Ecatepec 55000, Mexico
| | - Carlos Gasca
- Department of Critical Care, Hospital Juárez de México, Mexico City 07760, Mexico
| | - Eduardo R Argaiz
- Department of Nephrology and Mineral Metabolism, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City 14080, Mexico
| | - Abhilash Koratala
- Division of Nephrology, Medical College of Wisconsin, Wauwatosa, WI 53226, United States
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Gonzalez C, Chamberland ME, Aldred MP, Couture E, Beaubien-Souligny W, Calderone A, Lamarche Y, Denault A. Constrictive pericarditis: portal, splenic, and femoral venous Doppler pulsatility: a case series. Can J Anaesth 2021; 69:119-128. [PMID: 34739707 DOI: 10.1007/s12630-021-02126-8] [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: 01/05/2021] [Revised: 04/12/2021] [Accepted: 09/09/2021] [Indexed: 11/28/2022] Open
Abstract
PURPOSE Pulsatile flow of the portal vein has been implicated as an indicator of right ventricular dysfunction in cardiac patients. In patients with significantly elevated right atrial pressure, pulsatile venous flow may be transmitted to the portal, splenic, renal, and femoral veins. We describe the evolution of these echocardiographic findings in four patients with constrictive pericarditis (CP) undergoing pericardiectomy with simultaneous hemodynamic waveform and cerebral oximetry monitoring in the operating room and in the intensive care unit. CLINICAL FEATURES Patient 1 presented classic signs of CP, including equalization of left and right diastolic pressures, a "square root" sign on the diastolic portion of the right ventricular pressure curve, and elevated right atrial pressure. Preoperative transesophageal echocardiography showed a hyperdynamic left ventricle and dilated right ventricle with abnormal pulsatile waveforms in the portal and splenic veins. Surgical decompression of the pericardium gradually normalized the Doppler waveforms. Increased venous return following pericardiectomy during surgery in patients 2 and 3 and during the postoperative period in patient 4 resulted in right ventricular (RV) failure due to significantly increased preload. Venous pulsatility was also observed in the portal, splenic, and femoral veins. CONCLUSION In patients with CP, changes in hemodynamic and echocardiographic signs of RV dysfunction are rapidly reflected by changes in peripheral venous velocities. Identifying signs of splanchnic and peripheral vascular venous congestion could help identify patients at higher risk of developing postoperative complications following pericardiectomy.
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Affiliation(s)
- Céline Gonzalez
- Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, 5000 Belanger Street, Montreal, QC, H1T 1C8, Canada
| | - Marie-Eve Chamberland
- Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, 5000 Belanger Street, Montreal, QC, H1T 1C8, Canada
| | - Matthew P Aldred
- Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, 5000 Belanger Street, Montreal, QC, H1T 1C8, Canada
| | - Etienne Couture
- Department of Anesthesiology and Department of Medicine, Division of Intensive Care Medicine, Institut Universitaire de Cardiologie et de Pneumologie, Quebec, QC, Canada
| | - William Beaubien-Souligny
- Department of Medicine, Division of Nephrology, Centre Hospitalier de l'Université de Montréal, Montreal, QC, Canada
| | - Alexander Calderone
- Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, 5000 Belanger Street, Montreal, QC, H1T 1C8, Canada
| | - Yoan Lamarche
- Department of Cardiac Surgery and Critical Care Division, Montreal Heart Institute, Université de Montréal, Montreal, QC, Canada
| | - André Denault
- Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, 5000 Belanger Street, Montreal, QC, H1T 1C8, Canada. .,Department of Anesthesiology and Critical Care Division, Montreal Heart Institute, Université de Montréal, Montreal, QC, Canada.
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25
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Argaiz ER, Koratala A, Reisinger N. Comprehensive Assessment of Fluid Status by Point-of-Care Ultrasonography. KIDNEY360 2021; 2:1326-1338. [PMID: 35369665 PMCID: PMC8676400 DOI: 10.34067/kid.0006482020 10.34067/kid.0006482020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 05/26/2021] [Accepted: 05/26/2021] [Indexed: 01/10/2024]
Abstract
The management of complex fluid and electrolyte disorders is central to the practice of nephrologists. The sensitivity of physical examination alone to determine fluid status is limited, precluding accurate clinical decision making. Point-of-care ultrasonography (POCUS) is emerging as a valuable, noninvasive, bedside diagnostic tool for objective evaluation of physiologic and hemodynamic parameters related to fluid status, tolerance, and responsiveness. Rapid bedside sonographic evaluation can obtain qualitative data on cardiac function and quantitative data on pulmonary congestion. Advanced POCUS, including goal-directed Doppler echocardiography, provides additional quantitative information, including flow velocities and pressures across the cardiac structures. Recently, abnormal Doppler flow patterns in abdominal organs secondary to increased right atrial pressure have been linked to congestive organ damage, adding another component to the hemodynamic assessment. Integrating POCUS findings with clinical and laboratory data can further elucidate a patient's hemodynamic status. This drives decisions regarding crystalloid administration or, conversely, diuresis or ultrafiltration and allows tailored therapy for individual patients. In this article, we provide an overview of the focused assessment of cardiovascular function and pulmonary and venous congestion using POCUS and review relevant literature.
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Affiliation(s)
- Eduardo R. Argaiz
- National Institute of Medical Sciences and Nutrition Salvador Zubirán, Mexico City, Mexico
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26
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Argaiz ER, Koratala A, Reisinger N. Comprehensive Assessment of Fluid Status by Point-of-Care Ultrasonography. KIDNEY360 2021; 2:1326-1338. [PMID: 35369665 PMCID: PMC8676400 DOI: 10.34067/kid.0006482020] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 05/26/2021] [Accepted: 05/26/2021] [Indexed: 02/06/2023]
Abstract
The management of complex fluid and electrolyte disorders is central to the practice of nephrologists. The sensitivity of physical examination alone to determine fluid status is limited, precluding accurate clinical decision making. Point-of-care ultrasonography (POCUS) is emerging as a valuable, noninvasive, bedside diagnostic tool for objective evaluation of physiologic and hemodynamic parameters related to fluid status, tolerance, and responsiveness. Rapid bedside sonographic evaluation can obtain qualitative data on cardiac function and quantitative data on pulmonary congestion. Advanced POCUS, including goal-directed Doppler echocardiography, provides additional quantitative information, including flow velocities and pressures across the cardiac structures. Recently, abnormal Doppler flow patterns in abdominal organs secondary to increased right atrial pressure have been linked to congestive organ damage, adding another component to the hemodynamic assessment. Integrating POCUS findings with clinical and laboratory data can further elucidate a patient's hemodynamic status. This drives decisions regarding crystalloid administration or, conversely, diuresis or ultrafiltration and allows tailored therapy for individual patients. In this article, we provide an overview of the focused assessment of cardiovascular function and pulmonary and venous congestion using POCUS and review relevant literature.
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Affiliation(s)
- Eduardo R. Argaiz
- National Institute of Medical Sciences and Nutrition Salvador Zubirán, Mexico City, Mexico
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27
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Argaiz ER. VExUS Nexus: Bedside Assessment of Venous Congestion. Adv Chronic Kidney Dis 2021; 28:252-261. [PMID: 34906310 DOI: 10.1053/j.ackd.2021.03.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 03/02/2021] [Accepted: 03/09/2021] [Indexed: 12/19/2022]
Abstract
Organ dysfunction in the setting of heart failure is mainly determined by backward transmission of increased right atrial pressure. Although traditional point-of-care ultrasound applications such as inferior vena cava and lung ultrasound have been increasingly incorporated in the clinical care of congestive heart failure, they do not directly evaluate the hemodynamic consequences of high right atrial pressure on organ blood flow. Congestion induces alterations in the venous flow patterns of abdominal organs that can be readily assessed using Doppler imaging. These alterations have been consistently associated with congestive organ dysfunction and adverse clinical outcomes. In this article, we provide a comprehensive overview of the bedside assessment of venous congestion using Doppler imaging. The review focuses mainly on the normal and abnormal Doppler patterns of the hepatic, portal, and intrarenal veins along with clinical examples of how to incorporate this tool in the management of patients with venous congestion.
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28
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Miller A, Peck M, Clark T, Conway H, Olusanya S, Fletcher N, Coleman N, Parulekar P, Aron J, Kirk-Bayley J, Wilkinson JN, Wong A, Stephens J, Rubino A, Attwood B, Walden A, Breen A, Waraich M, Nix C, Hayward S. FUSIC HD. Comprehensive haemodynamic assessment with ultrasound. J Intensive Care Soc 2021; 23:325-333. [DOI: 10.1177/17511437211010032] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
FUSIC haemodynamics (HD) – the latest Focused Ultrasound in Intensive Care (FUSIC) module created by the Intensive Care Society (ICS) – describes a complete haemodynamic assessment with ultrasound based on ten key clinical questions: 1. Is stroke volume abnormal? 2. Is stroke volume responsive to fluid, vasopressors or inotropes? 3. Is the aorta abnormal? 4. Is the aortic valve, mitral valve or tricuspid valve severely abnormal? 5. Is there systolic anterior motion of the mitral valve? 6. Is there a regional wall motion abnormality? 7. Are there features of raised left atrial pressure? 8. Are there features of right ventricular impairment or raised pulmonary artery pressure? 9. Are there features of tamponade? 10. Is there venous congestion? FUSIC HD is the first system of its kind to interrogate major cardiac, arterial and venous structures to direct time-critical interventions in acutely unwell patients. This article explains the rationale for this accreditation, outlines the training pathway and summarises the ten clinical questions. Further details are included in an online supplementary appendix.
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Affiliation(s)
- Ashley Miller
- Department of Intensive Care, Shrewsbury and Telford Hospital NHS Trust, Shrewsbury, UK
| | - Marcus Peck
- Department of Intensive Care, Frimley Park Hospital NHS Foundation Trust, Surrey, UK
| | - Tom Clark
- Department of Intensive Care, Royal Devon and Exeter NHS Foundation Trust, Devon, UK
| | - Hannah Conway
- Department of Intensive Care, Glenfield Hospital, Leicester, UK
| | - Segun Olusanya
- Department of Intensive Care, Barts Health NHS Trust, London, UK
| | - Nick Fletcher
- Department of Intensive Care, St George's University Hospitals NHS Foundation Trust, London, UK
| | - Nick Coleman
- Department of Intensive Care, University Hospitals of North Midlands NHS Trust, Stoke-on-Trent, UK
| | - Prashant Parulekar
- Department of Intensive Care, East Kent Hospitals University NHS Foundation Trust, Kent, UK
| | - Jonathan Aron
- Department of Intensive Care, St George's University Hospitals NHS Foundation Trust, London, UK
| | - Justin Kirk-Bayley
- Department of Intensive Care, Royal Surrey County Hospital NHS Foundation Trust, Surrey, UK
| | | | - Adrian Wong
- Department of Intensive Care, Oxford University Hospitals NHS Trust, Oxford, UK
| | - Jennie Stephens
- Department of Intensive Care, Royal Cornwall Hospitals NHS Trust, Cornwall, UK
| | - Antonio Rubino
- Department of Intensive Care, Royal Papworth Hospital NHS Foundation Trust, Cambridge, UK
| | - Ben Attwood
- Department of Intensive Care, South Warwickshire NHS Foundation Trust, Warwick, UK
| | - Andrew Walden
- Department of Intensive Care, Royal Berkshire NHS Foundation Trust, Reading, UK
| | - Andrew Breen
- Department of Intensive Care, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Manprit Waraich
- Department of Intensive Care, Southampton University Hospitals NHS Trust, Southampton, UK
| | - Catherine Nix
- Department of Intensive Care, University Hospital Limerick, Dooradoyle, Limerick Ireland
| | - Simon Hayward
- Department of Intensive Care, Blackpool Victoria Hospital, Blackpool, UK
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Doppler Interrogation of the Femoral Vein in the Critically Ill Patient: The Fastest Potential Acoustic Window to Diagnose Right Ventricular Dysfunction? Crit Care Explor 2020; 2:e0209. [PMID: 33063023 PMCID: PMC7523763 DOI: 10.1097/cce.0000000000000209] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Objectives To report the use of common femoral vein Doppler interrogation as a simple technique to diagnose right ventricular dysfunction. Design Case report. Setting Cardiac surgical ICU. Patients Postoperative cardiac surgical patients. Interventions Common femoral pulsed-wave and color Doppler examination associated with hepatic, portal, and renal venous Doppler measurement were obtained in both patients and before and after treatment in patient number 1. In addition, right ventricular pressure waveform examination was obtained in patient number 2. Measurements and Main Results The technique to obtain common femoral venous Doppler is described. Two cases of patients presenting with right ventricular dysfunction and fluid overload with portal and renal venous congestion in the perioperative period undergoing complex multivalvular cardiac surgery are presented. Hemodynamic waveform monitoring was performed alongside echocardiographic, hepatic, and renal venous flow Doppler assessment, and spectral Doppler profiles of the common femoral veins were examined. Those findings were useful in confirming our diagnosis and guiding our response to treatment. An algorithm was developed and tested on two additional hemodynamically unstable patients. Conclusions Doppler examination of the common femoral vein is a simple, fast, and noninvasive technique that could be useful to rule in the presence of right ventricular dysfunction with venous congestion and help guide the management of such patients.
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30
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Beaubien-Souligny W, Cavayas YA, Denault A, Lamarche Y. First step toward uncovering perioperative congestive encephalopathy. J Thorac Cardiovasc Surg 2020; 161:S0022-5223(20)31087-4. [PMID: 32624312 DOI: 10.1016/j.jtcvs.2020.02.146] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 02/05/2020] [Accepted: 02/05/2020] [Indexed: 12/18/2022]
Affiliation(s)
- William Beaubien-Souligny
- Department of Anesthesiology, Intensive Care Unit, Montreal Heart Institute, Université de Montréal, Montreal, Québec, Canada; Division of Nephrology, Centre Hospitalier de l'Université de Montréal, Montreal, Québec, Canada
| | - Yiorgos Alexandros Cavayas
- Department of Cardiac Surgery, Intensive Care Unit, Montreal Heart Institute, Université de Montréal, Montreal, Québec, Canada; Department of Medicine, Hôpital Sacré-Coeur de Montréal, Montreal, Québec, Canada
| | - André Denault
- Department of Anesthesiology, Intensive Care Unit, Montreal Heart Institute, Université de Montréal, Montreal, Québec, Canada; Division of Intensive Care, Centre Hospitalier de l'Université de Montréal, Montreal, Québec, Canada
| | - Yoan Lamarche
- Department of Cardiac Surgery, Intensive Care Unit, Montreal Heart Institute, Université de Montréal, Montreal, Québec, Canada; Department of Cardiac Surgery, Hôpital Sacré-Coeur de Montréal, Montreal, Québec, Canada.
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31
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Shaaban-Ali M, Momeni M, Denault A. Clinical and Technical Limitations of Cerebral and Somatic Near-Infrared Spectroscopy as an Oxygenation Monitor. J Cardiothorac Vasc Anesth 2020; 35:763-779. [PMID: 32709385 DOI: 10.1053/j.jvca.2020.04.054] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 04/12/2020] [Accepted: 04/29/2020] [Indexed: 12/11/2022]
Abstract
Cerebral and somatic near-infrared spectroscopy monitors are commonly used to detect tissue oxygenation in various circumstances. This form of monitoring is based on tissue infrared absorption and can be influenced by several physiological and non-physiological factors that can induce error in the interpretation. This narrative review explores those clinical and technical limitations and proposes solutions and alternatives in order to avoid some of those pitfalls.
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Affiliation(s)
- Mohamed Shaaban-Ali
- Department of Anesthesia, College of Medicine, Assiut University, Assiut, Egypt
| | - Mona Momeni
- Department of Acute Medicine, Section Cardiothoracic and Vascular Anesthesia, Cliniques Universitaires Saint Luc, UCLouvain, Brussels, Belgium
| | - André Denault
- Department of Anesthesia and Critical Care Medicine, Montreal Heart Institute, Université de Montréal, and Centre Hospitalier de l'Université de Montréal, Montreal, Canada.
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32
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Beaubien-Souligny W, Rola P, Haycock K, Bouchard J, Lamarche Y, Spiegel R, Denault AY. Quantifying systemic congestion with Point-Of-Care ultrasound: development of the venous excess ultrasound grading system. Ultrasound J 2020; 12:16. [PMID: 32270297 PMCID: PMC7142196 DOI: 10.1186/s13089-020-00163-w] [Citation(s) in RCA: 243] [Impact Index Per Article: 60.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Accepted: 02/17/2020] [Indexed: 12/12/2022] Open
Abstract
Background Organ congestion is a mediator of adverse outcomes in critically ill patients. Point-Of-Care ultrasound (POCUS) is widely available and could enable clinicians to detect signs of venous congestion at the bedside. The aim of this study was to develop several grading system prototypes using POCUS and to determine their respective ability to predict acute kidney injury (AKI) after cardiac surgery. This is a post-hoc analysis of a single-center prospective study in 145 patients undergoing cardiac surgery for which repeated daily measurements of hepatic, portal, intra-renal vein Doppler and inferior vena cava (IVC) ultrasound were performed during the first 72 h after surgery. Five prototypes of venous excess ultrasound (VExUS) grading system combining multiple ultrasound markers were developed. Results The association between each score and AKI was assessed using time-dependant Cox models as well as conventional performance measures of diagnostic testing. A total of 706 ultrasound assessments were analyzed. We found that defining severe venous congestion as the presence of severe flow abnormalities in multiple Doppler patterns with a dilated IVC (≥ 2 cm) showed the strongest association with the development of subsequent AKI compared with other combinations (HR: 3.69 CI 1.65–8.24 p = 0.001). The association remained significant after adjustment for baseline risk of AKI and vasopressor/inotropic support (HR: 2.82 CI 1.21–6.55 p = 0.02). Furthermore, this severe VExUS grade offered a useful positive likelihood ratio (+LR: 6.37 CI 2.19–18.50) when detected at ICU admission, which outperformed central venous pressure measurements. Conclusions The combination of multiple POCUS markers may identify clinically significant venous congestion.
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Affiliation(s)
- William Beaubien-Souligny
- Department of Anesthesiology and Intensive Care, Montreal Heart Institute, Université de Montréal, Montreal, QC, Canada. .,Division of Nephrology, Centre Hospitalier de l'Université de Montreal, 1000, Rue St-Denis, Montreal, QC, H2X 0C1, Canada.
| | - Philippe Rola
- Division of Intensive Care, Santa Cabrini Hospital, Montreal, QC, Canada
| | - Korbin Haycock
- Department of Emergency Medicine, Loma Linda University School of Medicine, Loma Linda, CA, 92354, USA
| | - Josée Bouchard
- Division of Nephrology, Hôpital Sacré-Cœur de Montréal, Montreal, QC, Canada
| | - Yoan Lamarche
- Department of Surgery and Critical Care, Montreal Heart Institute, Université de Montréal, Montréal, QC, Canada
| | - Rory Spiegel
- Departments of Critical Care and Emergency Medicine, Washington Hospital Center, Georgetown University, Washington, DC, USA
| | - André Y Denault
- Department of Anesthesiology and Intensive Care, Montreal Heart Institute, Université de Montréal, Montreal, QC, Canada.,Division of Intensive Care, Centre Hospitalier de L'Université de Montreal, Montreal, QC, Canada
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33
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Grocott HP. Commentary: Can ultrasound contribute to our understanding of postoperative delirium? J Thorac Cardiovasc Surg 2020; 161:S0022-5223(20)30537-7. [PMID: 32279956 DOI: 10.1016/j.jtcvs.2020.02.092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 02/20/2020] [Indexed: 11/16/2022]
Affiliation(s)
- Hilary P Grocott
- Department of Anesthesiology, Perioperative and Pain Medicine, University of Manitoba, Winnipeg, Manitoba, Canada.
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34
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Iwata E, Kondo T, Kato T, Okumura T, Nishiyama I, Kazama S, Ishihara T, Kondo S, Hiraiwa H, Tsuda T, Ito M, Aoyama M, Tanimura D, Awaji Y, Unno K, Murohara T. Prognostic Value of Delirium in Patients With Acute Heart Failure in the Intensive Care Unit. Can J Cardiol 2020; 36:1649-1657. [PMID: 32615071 DOI: 10.1016/j.cjca.2020.01.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 01/07/2020] [Accepted: 01/10/2020] [Indexed: 10/25/2022] Open
Abstract
BACKGROUND Delirium is a common adverse event observed in patients admitted to the intensive care unit (ICU). However, the prognostic value of delirium and its determinants have not been thoroughly investigated in patients with acute heart failure (AHF). METHODS We investigated 408 consecutive patients with AHF admitted to the ICU. Delirium was diagnosed by means of the Confusion Assessment Method for ICU tool and evaluated every 8 hours during the patients' ICU stays. RESULTS Delirium occurred in 109 patients (26.7%), and the in-hospital mortality rate was significantly higher in patients with delirium (13.8% vs 2.3%; P < 0.001). Multivariate logistic regression analysis showed that delirium independently predicted in-hospital mortality (odds ratio [OR] 4.33, confidence interval [CI] 1.62-11.52; P = 0.003). Kaplan-Meier analysis showed that the 12-month mortality rate was significantly higher in patients with delirium compared with those without (log-rank test: P < 0.001), and Cox proportional hazards analysis showed that delirium remained an independent predictor of 12-month mortality (hazard ratio 2.19, 95% CI 1.49-3.25; P < 0.001). The incidence of delirium correlated with severity of heart failure as assessed by means of the Get With The Guidelines-Heart Failure risk score (chi-square test: P = 0.003). Age (OR 1.05, 95% CI 1.02-1.09; P = 0.003), nursing home residential status (OR 3.32, 95% CI 1.59-6.94; P = 0.001), and dementia (OR 5.32, 95% CI 2.83-10.00; P < 0.001) were independently associated with the development of delirium. CONCLUSIONS Development of delirium during ICU stay is associated with short- and long-term mortality and is predicted by the severity of heart failure, nursing home residential, and dementia status.
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Affiliation(s)
- Etsuo Iwata
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan; Department of Cardiology, Nagoya Ekisaikai Hospital, Nagoya, Aichi, Japan
| | - Toru Kondo
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan.
| | - Toshiaki Kato
- Department of Cardiology, Nagoya Ekisaikai Hospital, Nagoya, Aichi, Japan
| | - Takahiro Okumura
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Itsumure Nishiyama
- Department of Cardiology, Nagoya Ekisaikai Hospital, Nagoya, Aichi, Japan
| | - Shingo Kazama
- Department of Cardiology, Nagoya Ekisaikai Hospital, Nagoya, Aichi, Japan
| | - Toshikazu Ishihara
- Department of Cardiology, Nagoya Ekisaikai Hospital, Nagoya, Aichi, Japan
| | - Sayano Kondo
- Department of Cardiology, Nagoya Ekisaikai Hospital, Nagoya, Aichi, Japan
| | - Hiroaki Hiraiwa
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Takuma Tsuda
- Department of Cardiology, Nagoya Ekisaikai Hospital, Nagoya, Aichi, Japan
| | - Masanori Ito
- Department of Cardiology, Nagoya Ekisaikai Hospital, Nagoya, Aichi, Japan
| | - Morihiko Aoyama
- Department of Cardiology, Nagoya Ekisaikai Hospital, Nagoya, Aichi, Japan
| | - Daisuke Tanimura
- Department of Cardiology, Nagoya Ekisaikai Hospital, Nagoya, Aichi, Japan
| | - Yoshifumi Awaji
- Department of Cardiology, Nagoya Ekisaikai Hospital, Nagoya, Aichi, Japan
| | - Kazumasa Unno
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Toyoaki Murohara
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
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35
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Grønlykke L, Couture EJ, Haddad F, Amsallem M, Ravn HB, Raymond M, Beaubien-Souligny W, Demers P, Rochon A, Sarabi ME, Lamarche Y, Desjardins G, Denault AY. Preliminary Experience Using Diastolic Right Ventricular Pressure Gradient Monitoring in Cardiac Surgery. J Cardiothorac Vasc Anesth 2020; 34:2116-2125. [PMID: 32037274 DOI: 10.1053/j.jvca.2019.12.042] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 12/31/2019] [Accepted: 12/31/2019] [Indexed: 12/21/2022]
Abstract
OBJECTIVES Right ventricular (RV) dysfunction in cardiac surgery is associated with increased mortality and morbidity and difficult separation from cardiopulmonary bypass (DSB). The primary objective of the present study was to describe the prevalence and characteristics of patients with abnormal RV diastolic pressure gradient (PG). The secondary objective was to explore the association among abnormal diastolic PG and DSB, postoperative complications, high central venous pressure (CVP), and high RV end-diastolic pressure (RVEDP). DESIGN Retrospective and prospective validation study. SETTING Tertiary care cardiac institute. PARTICIPANTS Cardiac surgical patients (n=374) from a retrospective analysis (n=259) and a prospective validation group (n=115). INTERVENTION RV pressure waveforms were obtained using a pulmonary artery catheter with a pacing port opened at 19 cm distal to the tip of the catheter. Abnormal RV diastolic PG was defined as >4 mmHg. Both elevated RVEDP and high CVP were defined as >16 mmHg. MEASUREMENTS AND MAIN RESULTS From the retrospective and validation cohorts, 42.5% and 48% of the patients had abnormal RV diastolic PG before cardiac surgery, respectively. Abnormal RV diastolic PG before cardiac surgery was associated with higher EuroSCORE II (odds ratio 2.29 [1.10-4.80] v 1.62 [1.10-3.04]; p = 0.041), abnormal hepatic venous flow (45% v 29%; p = 0.038), higher body mass index (28.9 [25.5-32.5] v 27.0 [24.9-30.5]; p = 0.022), pulmonary hypertension (48% v 37%; p = 0.005), and more frequent DSB (32% v 19%; p = 0.023). However, RV diastolic PG was not an independent predictor of DSB, whereas RVEDP (odds ratio 1.67 [1.09-2.55]; p = 0.018) was independently associated with DSB. In addition, RV pressure monitoring indices were superior to CVP in predicting DSB. CONCLUSION Abnormal RV diastolic PG is common before cardiac surgery and is associated with a higher proportion of known preoperative risk factors. However, an abnormal RV diastolic PG gradient is not an independent predictor of DSB in contrast to RVEDP.
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Affiliation(s)
- Lars Grønlykke
- Department of Cardiothoracic Anaesthesia, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Etienne J Couture
- Cardiac Surgical Intensive Care Division, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - Francois Haddad
- Department of Cardiovascular Medicine, Stanford University, Stanford, CA
| | - Myriam Amsallem
- Department of Cardiovascular Medicine, Stanford University, Stanford, CA
| | - Hanne Berg Ravn
- Department of Cardiothoracic Anaesthesia, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Meggie Raymond
- Department of Cardiothoracic Anaesthesia, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark; Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - William Beaubien-Souligny
- Cardiac Surgical Intensive Care Division, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - Philippe Demers
- Department of Cardiac Surgery, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - Antoine Rochon
- Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - Mahsa Elmi Sarabi
- Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - Yoan Lamarche
- Cardiac Surgical Intensive Care Division, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada; Department of Cardiac Surgery, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - Georges Desjardins
- Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada
| | - André Y Denault
- Cardiac Surgical Intensive Care Division, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada; Department of Anesthesiology, Montreal Heart Institute, Université de Montréal, Montreal, Quebec, Canada.
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Gregory AJ, Grant MC, Manning MW, Cheung AT, Ender J, Sander M, Zarbock A, Stoppe C, Meineri M, Grocott HP, Ghadimi K, Gutsche JT, Patel PA, Denault A, Shaw A, Fletcher N, Levy JH. Enhanced Recovery After Cardiac Surgery (ERAS Cardiac) Recommendations: An Important First Step-But There Is Much Work to Be Done. J Cardiothorac Vasc Anesth 2020; 34:39-47. [PMID: 31570245 DOI: 10.1053/j.jvca.2019.09.002] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 09/02/2019] [Indexed: 01/17/2023]
Affiliation(s)
- Alexander J Gregory
- Department of Anesthesiology, Perioperative and Pain Medicine, Cumming School of Medicine, University of Calgary, Alberta, Canada; Department of Anesthesiology, Perioperative and Pain Medicine, Libin Cardiovascular Institute of Alberta, Calgary, Alberta, Canada
| | - Michael C Grant
- Department of Anesthesiology and Critical Care Medicine, The Johns Hopkins Medical Institutions, Baltimore, MD; Armstrong Institute for Patient Safety and Quality, The Johns Hopkins Medical Institutions, Baltimore, MD
| | | | - Albert T Cheung
- Department of Anesthesiology, Stanford University School of Medicine, Stanford, CA
| | - Joerg Ender
- Department of Anesthesiology and Intensive Care Medicine, Herzzentrum Leipzig, Leipzig, Germany
| | - Michael Sander
- Department of Anaesthesiology and Intensive Care Medicine, UKGM University Hospital Gießen, Justus-Liebig-University Giessen, Gießen, Germany
| | - Alexander Zarbock
- Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Münster, Münster, Germany
| | - Christian Stoppe
- Department of Intensive Care Medicine, University Hospital of the RWTH Aachen, Aachen, Germany
| | | | - Hilary P Grocott
- Department of Anesthesiology, Perioperative and Pain Medicine and Department of Surgery, University of Manitoba, Winnipeg, Canada
| | - Kamrouz Ghadimi
- Department of Anesthesiology, Duke University, Durham, NC; Department of Critical Care, Duke University School of Medicine, Durham, NC
| | - Jacob T Gutsche
- Division of Cardiac Critical Care, University of Pennsylvania, Philadelphia, PA
| | - Prakash A Patel
- Department of Anesthesiology and Critical Care, University of Pennsylvania, Philadelphia, PA
| | - Andre Denault
- Département d'Anesthésiologie et de Médecine de la Douleur, Institut de Cardiologie de Montréal, Montréal, Quebec Canada; Division des Soins Intensifs, Département de Chirurgie Cardiaque, Institut de Cardiologie de Montréal, Montréal, Quebec Canada; Département de Pharmacologie et de Physiologie, Institut de Cardiologie de Montréal, Montréal, Quebec Canada
| | - Andrew Shaw
- Department of Anesthesiology and Pain Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Nick Fletcher
- Department of Cardiothoracic Anesthesia and Critical Care, St. Georges University Hospital, London, United Kingdom; Institute of Anesthesia and Critical Care, Cleveland Clinic London, London, United Kingdom
| | - Jerrold H Levy
- Department of Anesthesiology, Duke University, Durham, NC; Department of Critical Care, Duke University School of Medicine, Durham, NC
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37
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Portal Vein Pulsatility After Cardiac Surgery-Who Cares? Can J Cardiol 2019; 35:1088-1090. [PMID: 31472807 DOI: 10.1016/j.cjca.2019.06.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 06/02/2019] [Accepted: 06/03/2019] [Indexed: 11/23/2022] Open
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