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Aneman A, Skrifvars MB, Ameloot K. Venous return physiology applied to post-cardiac arrest haemodynamic management: a post hoc analysis of the NEUROPROTECT trial. Intensive Care Med Exp 2024; 12:70. [PMID: 39138823 PMCID: PMC11322455 DOI: 10.1186/s40635-024-00657-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2024] [Accepted: 08/07/2024] [Indexed: 08/15/2024] Open
Abstract
BACKGROUND The European Resuscitation Council 2021 guidelines for haemodynamic monitoring and management during post-resuscitation care from cardiac arrest call for an individualised approach to therapeutic interventions. Combining the cardiac function and venous return curves with the inclusion of the mean systemic filling pressure enables a physiological illustration of intravascular volume, vasoconstriction and inotropy. An analogue mean systemic filling pressure (Pmsa) may be calculated once cardiac output, mean arterial and central venous pressure are known. The NEUROPROTECT trial compared targeting a mean arterial pressure of 65 mmHg (standard) versus an early goal directed haemodynamic optimisation targeting 85 mmHg (high) in ICU for 36 h after cardiac arrest. The trial data were used in this study to calculate post hoc Pmsa and its expanded variables to comprehensively describe venous return physiology during post-cardiac arrest management. A general estimating equation model was used to analyse continuous variables split by standard and high mean arterial pressure groups. RESULTS Data from 52 patients in each group were analysed. The driving pressure for venous return, and thus cardiac output, was higher in the high MAP group (p < 0.001) along with a numerically increased estimated stressed intravascular volume (mean difference 0.27 [- 0.014-0.55] L, p = 0.06). The heart efficiency was comparable (p = 0.43) in both the standard and high MAP target groups, suggesting that inotropy was similar despite increased arterial load in the high MAP group (p = 0.01). The efficiency of fluid boluses to increase cardiac output was increased in the higher MAP compared to standard MAP group (mean difference 0.26 [0.08-0.43] fraction units, p = 0.01). CONCLUSIONS Calculation of the analogue mean systemic filling pressure and expanded variables using haemodynamic data from the NEUROPROTECT trial demonstrated an increased venous return, and thus cardiac output, as well as increased volume responsiveness associated with targeting a higher MAP. Further studies of the analogue mean systemic filling pressure and its derived variables are warranted to individualise post-resuscitation care and evaluate any clinical benefit associated with this monitoring approach.
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Affiliation(s)
- Anders Aneman
- Intensive Care Unit, Liverpool Hospital, South Western Sydney Local Health District and South Western Sydney Clinical School, University of New South Wales, Sydney, Australia.
- The Ingham Institute for Applied Medical Research, Sydney, Australia.
- Faculty of Health Sciences, Macquarie University, Sydney, Australia.
| | - Markus Benedikt Skrifvars
- Department of Emergency Care and Services, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Koen Ameloot
- Department of Cardiology, Ziekenhuis Oost-Limburg, Genk, Belgium
- Departement de Cardiologie/Soins Intensifs Adultes, CHC-Montlégia, Liège, Belgique
- Department of Cardiology, University Hospitals Leuven, Louvain, Belgium
- Faculty of Medicine and Life Sciences, University Hasselt, Diepenbeek, Belgium
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Yastrebov K, Brunel L, Paterson HS, Williams ZA, Burrows CS, Wise IK, Robinson BM, Bannon PG. Analogue Mean Systemic Filling Pressure: a New Volume Management Approach During Percutaneous Left Ventricular Assist Device Therapy. J Cardiovasc Transl Res 2022; 15:1455-1463. [PMID: 35543833 PMCID: PMC9722875 DOI: 10.1007/s12265-022-10265-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 04/20/2022] [Indexed: 12/16/2022]
Abstract
The absence of an accepted gold standard to estimate volume status is an obstacle for optimal management of left ventricular assist devices (LVADs). The applicability of the analogue mean systemic filling pressure (Pmsa) as a surrogate of the mean circulatory pressure to estimate volume status for patients with LVADs has not been investigated. Variability of flows generated by the Impella CP, a temporary LVAD, should have no physiological impact on fluid status. This translational interventional ovine study demonstrated that Pmsa did not change with variable circulatory flows induced by a continuous flow LVAD (the average dynamic increase in Pmsa of 0.20 ± 0.95 mmHg from zero to maximal Impella flow was not significant (p = 0.68)), confirming applicability of the human Pmsa equation for an ovine LVAD model. The study opens new directions for future translational and human investigations of fluid management using Pmsa for patients with temporary LVADs.
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Affiliation(s)
- Konstantin Yastrebov
- Department of Intensive Care, Prince of Wales Hospital, Sydney, NSW, 2031, Australia.
- The University of New South Wales, Sydney, NSW, 2052, Australia.
| | - Laurencie Brunel
- Charles Perkins Research Facility, University of Sydney, Sydney, NSW, 2006, Australia
| | - Hugh S Paterson
- Charles Perkins Research Facility, University of Sydney, Sydney, NSW, 2006, Australia
| | - Zoe A Williams
- Charles Perkins Research Facility, University of Sydney, Sydney, NSW, 2006, Australia
| | - Chris S Burrows
- Charles Perkins Research Facility, University of Sydney, Sydney, NSW, 2006, Australia
| | - Innes K Wise
- Charles Perkins Research Facility, University of Sydney, Sydney, NSW, 2006, Australia
| | - Benjamin M Robinson
- Charles Perkins Research Facility, University of Sydney, Sydney, NSW, 2006, Australia
- Royal Prince Alfred Hospital, Sydney, NSW, 2050, Australia
| | - Paul G Bannon
- Charles Perkins Research Facility, University of Sydney, Sydney, NSW, 2006, Australia
- Royal Prince Alfred Hospital, Sydney, NSW, 2050, Australia
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Conflicting interactions in multiple closed-loop controlled critical care Treatments: A hemorrhage resuscitation-intravenous propofol sedation case study. Biomed Signal Process Control 2022. [DOI: 10.1016/j.bspc.2021.103268] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Wijnberge M, Jansen JRC, Pinsky MR, Klanderman RB, Terwindt LE, Bosboom JJ, Lemmers N, Vlaar AP, Veelo DP, Geerts BF. Feasibility to estimate mean systemic filling pressure with inspiratory holds at the bedside. Front Physiol 2022; 13:1041730. [PMID: 36523553 PMCID: PMC9745184 DOI: 10.3389/fphys.2022.1041730] [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: 09/11/2022] [Accepted: 10/25/2022] [Indexed: 11/30/2022] Open
Abstract
Background: A decade ago, it became possible to derive mean systemic filling pressure (MSFP) at the bedside using the inspiratory hold maneuver. MSFP has the potential to help guide hemodynamic care, but the estimation is not yet implemented in common clinical practice. In this study, we assessed the ability of MSFP, vascular compliance (Csys), and stressed volume (Vs) to track fluid boluses. Second, we assessed the feasibility of implementation of MSFP in the intensive care unit (ICU). Exploratory, a potential difference in MSFP response between colloids and crystalloids was assessed. Methods: This was a prospective cohort study in adult patients admitted to the ICU after cardiac surgery. The MSFP was determined using 3-4 inspiratory holds with incremental pressures (maximum 35 cm H2O) to construct a venous return curve. Two fluid boluses were administered: 100 and 500 ml, enabling to calculate Vs and Csys. Patients were randomized to crystalloid or colloid fluid administration. Trained ICU consultants acted as study supervisors, and protocol deviations were recorded. Results: A total of 20 patients completed the trial. MSFP was able to track the 500 ml bolus (p < 0.001). In 16 patients (80%), Vs and Csys could be determined. Vs had a median of 2029 ml (IQR 1605-3164), and Csys had a median of 73 ml mmHg-1 (IQR 56-133). A difference in response between crystalloids and colloids was present for the 100 ml fluid bolus (p = 0.019) and in a post hoc analysis, also for the 500 ml bolus (p = 0.010). Conclusion: MSFP can be measured at the bedside and provides insights into the hemodynamic status of a patient that are currently missing. The clinical feasibility of Vs and Csys was judged ambiguously based on the lack of required hemodynamic stability. Future studies should address the clinical obstacles found in this study, and less-invasive alternatives to determine MSFP should be further explored. Clinical Trial Registration: ClinicalTrials.gov Identifier NCT03139929.
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Affiliation(s)
- Marije Wijnberge
- Amsterdam UMC Location Academic Medical Center, Department of Anesthesiology, Amsterdam, Netherlands
- Amsterdam UMC Location Academic Medical Center, Department of Intensive Care Medicine, Amsterdam, Netherlands
- *Correspondence: Marije Wijnberge, Alexander P. Vlaar,
| | - Jos R. C. Jansen
- Leiden University Medical Center, Department of Intensive Care Medicine, Leiden, Netherlands
| | - Michael R. Pinsky
- Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - Robert B. Klanderman
- Amsterdam UMC Location Academic Medical Center, Department of Anesthesiology, Amsterdam, Netherlands
- Amsterdam UMC Location Academic Medical Center, Department of Intensive Care Medicine, Amsterdam, Netherlands
| | - Lotte E. Terwindt
- Amsterdam UMC Location Academic Medical Center, Department of Anesthesiology, Amsterdam, Netherlands
| | - Joachim J. Bosboom
- Amsterdam UMC Location Academic Medical Center, Department of Anesthesiology, Amsterdam, Netherlands
- Amsterdam UMC Location Academic Medical Center, Department of Intensive Care Medicine, Amsterdam, Netherlands
| | - Nikki Lemmers
- Amsterdam UMC Location Academic Medical Center, Department of Anesthesiology, Amsterdam, Netherlands
| | - Alexander P. Vlaar
- Amsterdam UMC Location Academic Medical Center, Department of Intensive Care Medicine, Amsterdam, Netherlands
- *Correspondence: Marije Wijnberge, Alexander P. Vlaar,
| | - Denise P. Veelo
- Amsterdam UMC Location Academic Medical Center, Department of Anesthesiology, Amsterdam, Netherlands
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Schulz L, Geri G, Vieillard‐Baron A, Vignon P, Parkin G, Aneman A. Volume status and volume responsiveness in postoperative cardiac surgical patients: An observational, multicentre cohort study. Acta Anaesthesiol Scand 2021; 65:320-328. [PMID: 33169357 DOI: 10.1111/aas.13735] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 10/12/2020] [Accepted: 10/14/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND The best strategy to identify patients in whom fluid loading increases cardiac output (CO) following cardiac surgery remains debated. This study examined the utility of a calculated mean systemic filling pressure analogue (Pmsa ) and derived variables to explain the response to a fluid bolus. METHODS The Pmsa was calculated using retrospective, observational cohort data in the early postoperative period between admission to the intensive care unit and extubation within 6 hours. The venous return pressure gradient (VRdP) was calculated as Pmsa - central venous pressure. Concurrent changes induced by a fluid bolus in the ratio of the VRdP over Pmsa , the volume efficiency (Evol ), were studied to assess fluid responsiveness. Changes between Pmsa and derived variables and CO were analysed by Wilcoxon rank-sum test, hierarchial clustering and multiple linear regression. RESULTS Data were analysed for 235 patients who received 489 fluid boluses. The Pmsa increased with consecutive fluid boluses (median difference [range] 1.3 [0.5-2.4] mm Hg, P = .03) with a corresponding increase in VRdP (median difference 0.4 [0.2-0.6] mm Hg, P = .04). Hierarchical cluster analysis only identified Evol and the change in CO within one cluster. The multiple linear regression between Pmsa and its derived variables and the change in CO (overall r2 = .48, P < .001) demonstrated the best partial regression between the continuous change in CO and the concurrent Evol (r = .55, P < .001). CONCLUSION The mean systemic filling Pmsa enabled a comprehensive interpretation of fluid responsiveness with volume efficiency useful to explain the change in CO as a continuous phenomenon.
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Affiliation(s)
- Luis Schulz
- Intensive Care Unit Liverpool Hospital South Western Sydney Local Health District Liverpool NSW Australia
| | - Guillaume Geri
- Intensive Care Unit Assistance Publique‐Hôpitaux de Paris University Hospital Ambroise Paré Boulogne‐Billancourt France
- INSERM U‐1018 CESP Team 5 University of Versailles Saint‐Quentin en Yvelines Villejuif France
- Faculty of Medicine Paris Ile‐de‐France Ouest University of Versailles Saint‐Quentin en Yvelines Villejuif France
| | - Antoine Vieillard‐Baron
- Intensive Care Unit Assistance Publique‐Hôpitaux de Paris University Hospital Ambroise Paré Boulogne‐Billancourt France
- INSERM U‐1018 CESP Team 5 University of Versailles Saint‐Quentin en Yvelines Villejuif France
- Faculty of Medicine Paris Ile‐de‐France Ouest University of Versailles Saint‐Quentin en Yvelines Villejuif France
| | - Philippe Vignon
- Medical‐surgical Intensive Care Unit Limoges University Hospital Limoges France
- INSERM CIC 1435 Limoges University Hospital Limoges France
- Faculty of Medicine University of Limoges Limoges France
| | - Geoffrey Parkin
- Intensive Care Unit Monash Medical Centre Clayton Vic. Australia
| | - Anders Aneman
- Intensive Care Unit Liverpool Hospital South Western Sydney Local Health District Liverpool NSW Australia
- South Western Sydney Clinical School University of New South Wales Sydney NSW Australia
- Faculty of Medicine and Health Sciences Macquarie University Sydney NSW Australia
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