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Højlund J, Cihoric M, Foss NB. Vasoconstriction with phenylephrine increases cardiac output in preload dependent patients. J Clin Monit Comput 2024:10.1007/s10877-024-01186-7. [PMID: 38907106 DOI: 10.1007/s10877-024-01186-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Accepted: 06/02/2024] [Indexed: 06/23/2024]
Abstract
General Anaesthesia (GA) is accompanied by a marked decrease in sympathetic outflow and thus loss of vasomotor control of cardiac preload. The use of vasoconstriction during GA has mainly focused on maintaining blood pressure. Phenylephrine (PE) is a pure α1-agonist without inotropic effects widely used to correct intraoperative hypotension. The potential of PE for augmenting cardiac stroke volume (SV) and -output (CO) by venous recruitment is controversial and no human studies have explored the effects of PE in preload dependent circulation using indicator dilution technique. We hypothesized that PE-infusion in patients with cardiac stroke volume limited by reduced preload would restore preload and thus augment SV and CO. 20 patients undergoing GA for gastrointestinal surgery were monitored with arterial catheter and LiDCO unity monitor. Upon stable haemodynamics after induction patients were placed in head-up tilt (HUT). All patients became preload responsive as verified by a stroke volume variation (SVV) of > 12%. PE-infusion was then started at 15-20mikrg/min and adjusted until preload was restored (SVV < 12%). Li-dilution cardiac output (CO) was initially measured after induction (baseline), again with HUT in the preload responsive phase, and finally when preload was restored with infusion of PE.At baseline SVV was 10 ± 3% (mean ± st.dev.), CI was 2,6 ± 0,4 L/min*m2, and SVI 43 ± 7mL/m2. With HUT SVV was 19 ± 4%, CI was 2,2 ± 0,4 L/min*m2, SVI 35 ± 7mL/m2. During PE-infusion SVV was reduced to 6 ± 3%, CI increased to 2,6 ± 0,5 L/min*m2, and SVI increased to 49 ± 11mL/m2. All differences p < 0,001. In conclusion: Infusion of phenylephrine during preload dependency increased venous return abolishing preload dependency as evaluated by SVV and increased cardiac stroke volume and -output as measured by indicator-dilution technique. (ClinicalTrials.gov NCT05193097).
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Affiliation(s)
- Jakob Højlund
- Department of Anaesthesiology, Hvidovre University Hospital, Capital Region, Denmark.
| | - Mirjana Cihoric
- Department of Anaesthesiology, Hvidovre University Hospital, Capital Region, Denmark
| | - Nicolai Bang Foss
- Department of Anaesthesiology, Hvidovre University Hospital, Capital Region, Denmark
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Crosignani A, Spina S, Marrazzo F, Cimbanassi S, Malbrain MLNG, Van Regenemortel N, Fumagalli R, Langer T. Intravenous fluid therapy in patients with severe acute pancreatitis admitted to the intensive care unit: a narrative review. Ann Intensive Care 2022; 12:98. [PMID: 36251136 PMCID: PMC9576837 DOI: 10.1186/s13613-022-01072-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 10/11/2022] [Indexed: 11/26/2022] Open
Abstract
Patients with acute pancreatitis (AP) often require ICU admission, especially when signs of multiorgan failure are present, a condition that defines AP as severe. This disease is characterized by a massive pancreatic release of pro-inflammatory cytokines that causes a systemic inflammatory response syndrome and a profound intravascular fluid loss. This leads to a mixed hypovolemic and distributive shock and ultimately to multiorgan failure. Aggressive fluid resuscitation is traditionally considered the mainstay treatment of AP. In fact, all available guidelines underline the importance of fluid therapy, particularly in the first 24–48 h after disease onset. However, there is currently no consensus neither about the type, nor about the optimal fluid rate, total volume, or goal of fluid administration. In general, a starting fluid rate of 5–10 ml/kg/h of Ringer’s lactate solution for the first 24 h has been recommended. Fluid administration should be aggressive in the first hours, and continued only for the appropriate time frame, being usually discontinued, or significantly reduced after the first 24–48 h after admission. Close clinical and hemodynamic monitoring along with the definition of clear resuscitation goals are fundamental. Generally accepted targets are urinary output, reversal of tachycardia and hypotension, and improvement of laboratory markers. However, the usefulness of different endpoints to guide fluid therapy is highly debated. The importance of close monitoring of fluid infusion and balance is acknowledged by most available guidelines to avoid the deleterious effect of fluid overload. Fluid therapy should be carefully tailored in patients with severe AP, as for other conditions frequently managed in the ICU requiring large fluid amounts, such as septic shock and burn injury. A combination of both noninvasive clinical and invasive hemodynamic parameters, and laboratory markers should guide clinicians in the early phase of severe AP to meet organ perfusion requirements with the proper administration of fluids while avoiding fluid overload. In this narrative review the most recent evidence about fluid therapy in severe AP is discussed and an operative algorithm for fluid administration based on an individualized approach is proposed.
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Affiliation(s)
- Andrea Crosignani
- School of Medicine and Surgery, University of Milan-Bicocca, Milan, Italy.,Department of Anaesthesia and Critical Care, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy
| | - Stefano Spina
- School of Medicine and Surgery, University of Milan-Bicocca, Milan, Italy.,Department of Anaesthesia and Critical Care, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy
| | - Francesco Marrazzo
- School of Medicine and Surgery, University of Milan-Bicocca, Milan, Italy.,Department of Anaesthesia and Critical Care, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy
| | - Stefania Cimbanassi
- General Surgery and Trauma Team, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy.,Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - Manu L N G Malbrain
- First Department of Anaesthesia and Intensive Therapy, Medical University of Lublin, Lublin, Poland.,International Fluid Academy, Lovenjoel, Belgium
| | - Niels Van Regenemortel
- Department of Intensive Care Medicine, Antwerp University Hospital, Antwerp, Belgium.,Department of Intensive Care Medicine, Ziekenhuis Netwerk Antwerpen Campus Stuivenberg, Antwerp, Belgium
| | - Roberto Fumagalli
- School of Medicine and Surgery, University of Milan-Bicocca, Milan, Italy.,Department of Anaesthesia and Critical Care, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy
| | - Thomas Langer
- School of Medicine and Surgery, University of Milan-Bicocca, Milan, Italy. .,Department of Anaesthesia and Critical Care, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy.
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Fluid Management, Intra-Abdominal Hypertension and the Abdominal Compartment Syndrome: A Narrative Review. Life (Basel) 2022; 12:life12091390. [PMID: 36143427 PMCID: PMC9502789 DOI: 10.3390/life12091390] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/17/2022] [Accepted: 08/25/2022] [Indexed: 11/17/2022] Open
Abstract
Background: General pathophysiological mechanisms regarding associations between fluid administration and intra-abdominal hypertension (IAH) are evident, but specific effects of type, amount, and timing of fluids are less clear. Objectives: This review aims to summarize current knowledge on associations between fluid administration and intra-abdominal pressure (IAP) and fluid management in patients at risk of intra-abdominal hypertension and abdominal compartment syndrome (ACS). Methods: We performed a structured literature search from 1950 until May 2021 to identify evidence of associations between fluid management and intra-abdominal pressure not limited to any specific study or patient population. Findings were summarized based on the following information: general concepts of fluid management, physiology of fluid movement in patients with intra-abdominal hypertension, and data on associations between fluid administration and IAH. Results: We identified three randomized controlled trials (RCTs), 38 prospective observational studies, 29 retrospective studies, 18 case reports in adults, two observational studies and 10 case reports in children, and three animal studies that addressed associations between fluid administration and IAH. Associations between fluid resuscitation and IAH were confirmed in most studies. Fluid resuscitation contributes to the development of IAH. However, patients with IAH receive more fluids to manage the effect of IAH on other organ systems, thereby causing a vicious cycle. Timing and approach to de-resuscitation are of utmost importance, but clear indicators to guide this decision-making process are lacking. In selected cases, only surgical decompression of the abdomen can stop deterioration and prevent further morbidity and mortality. Conclusions: Current evidence confirms an association between fluid resuscitation and secondary IAH, but optimal fluid management strategies for patients with IAH remain controversial.
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Muir WW, Hughes D, Silverstein DC. Editorial: Fluid Therapy in Animals: Physiologic Principles and Contemporary Fluid Resuscitation Considerations. Front Vet Sci 2021; 8:744080. [PMID: 34746284 PMCID: PMC8563835 DOI: 10.3389/fvets.2021.744080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 09/21/2021] [Indexed: 11/13/2022] Open
Affiliation(s)
- William W Muir
- College of Veterinary Medicine, Lincoln Memorial University, Harrogate, TN, United States
| | - Dez Hughes
- Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Melbourne, VIC, Australia
| | - Deborah C Silverstein
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, United States
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Ripollés-Melchor J, Zaballos-García M, Monge García MI. The phenylephrine challenge. Minerva Anestesiol 2020; 86:1015-1018. [PMID: 32613813 DOI: 10.23736/s0375-9393.20.14716-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Javier Ripollés-Melchor
- Department of Anesthesia and Critical Care, Infanta Leonor University Hospital, Madrid, Spain - .,Spanish Perioperative Audit and Research Network (REDGERM), Zaragoza, Spain -
| | - Matilde Zaballos-García
- Department of Anesthesia and Critical Care, Gregorio Maranon University Hospital, Madrid, Spain
| | - Manuel I Monge García
- Department of Critical Care, University Hospital of Jerez, Jerez de la Frontera, Spain
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Saugel B, Critchley LAH, Kaufmann T, Flick M, Kouz K, Vistisen ST, Scheeren TWL. Journal of Clinical Monitoring and Computing end of year summary 2019: hemodynamic monitoring and management. J Clin Monit Comput 2020; 34:207-219. [PMID: 32170569 PMCID: PMC7080677 DOI: 10.1007/s10877-020-00496-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 03/05/2020] [Indexed: 12/27/2022]
Affiliation(s)
- Bernd Saugel
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Outcomes Research Consortium, Cleveland, OH, USA
| | - Lester A H Critchley
- Department of Anesthesia and Intensive Care, The Chinese University of Hong Kong, Shatin, Hong Kong.,The Belford Hospital, Fort William, The Highlands, Scotland, UK
| | - Thomas Kaufmann
- Department of Anesthesiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9700 RB, Groningen, The Netherlands
| | - Moritz Flick
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Karim Kouz
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Simon T Vistisen
- Department of Anaesthesia and Intensive Care, Aarhus University, Aarhus, Denmark
| | - Thomas W L Scheeren
- Department of Anesthesiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9700 RB, Groningen, The Netherlands.
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Silversides JA, Perner A, Malbrain MLNG. Liberal versus restrictive fluid therapy in critically ill patients. Intensive Care Med 2019; 45:1440-1442. [DOI: 10.1007/s00134-019-05713-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Accepted: 07/25/2019] [Indexed: 10/26/2022]
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