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Hemodynamics fluids

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https://www.readbyqxmd.com/read/27858374/prediction-of-fluid-responsiveness-an-update
#1
REVIEW
Xavier Monnet, Paul E Marik, Jean-Louis Teboul
In patients with acute circulatory failure, the decision to give fluids or not should not be taken lightly. The risk of overzealous fluid administration has been clearly established. Moreover, volume expansion does not always increase cardiac output as one expects. Thus, after the very initial phase and/or if fluid losses are not obvious, predicting fluid responsiveness should be the first step of fluid strategy. For this purpose, the central venous pressure as well as other "static" markers of preload has been used for decades, but they are not reliable...
December 2016: Annals of Intensive Care
https://www.readbyqxmd.com/read/27841822/vasopressin-versus-norepinephrine-in-patients-with-vasoplegic-shock-after-cardiac-surgery-the-vancs-randomized-controlled-trial
#2
Ludhmila Abrahao Hajjar, Jean Louis Vincent, Filomena Regina Barbosa Gomes Galas, Andrew Rhodes, Giovanni Landoni, Eduardo Atsushi Osawa, Renato Rosa Melo, Marcia Rodrigues Sundin, Solimar Miranda Grande, Fabio A Gaiotto, Pablo Maria Pomerantzeff, Luis Oliveira Dallan, Rafael Alves Franco, Rosana Ely Nakamura, Luiz Augusto Lisboa, Juliano Pinheiro de Almeida, Aline Muller Gerent, Dayenne Hianae Souza, Maria Alice Gaiane, Julia Tizue Fukushima, Clarice Lee Park, Cristiane Zambolim, Graziela Santos Rocha Ferreira, Tânia Mara Strabelli, Felipe Lourenco Fernandes, Ligia Camara, Suely Zeferino, Valter Garcia Santos, Marilde Albuquerque Piccioni, Fabio Biscegli Jatene, Jose Otavio Costa Auler, Roberto Kalil Filho
BACKGROUND: Vasoplegic syndrome is a common complication after cardiac surgery and impacts negatively on patient outcomes. The objective of this study was to evaluate whether vasopressin is superior to norepinephrine in reducing postoperative complications in patients with vasoplegic syndrome. METHODS: This prospective, randomized, double-blind trial was conducted at the Heart Institute, University of Sao Paulo, Sao Paulo, Brazil, between January 2012 and March 2014...
November 11, 2016: Anesthesiology
https://www.readbyqxmd.com/read/27829180/changes-of-central-venous-oxygen-saturation-define-fluid-responsiveness-in-patients-with-septic-shock-a-prospective-observational-study
#3
Biao Xu, Xiaobo Yang, Chunyao Wang, Wei Jiang, Li Weng, Xiaoyun Hu, Jinmin Peng, Bin Du
PURPOSE: To evaluate whether the changes of central venous oxygen saturation (Scvo2) after fluid challenge can define fluid responsiveness in patients with septic shock. METHODS: In this prospective observational study, septic shock patients with invasive cardiac output monitoring requiring fluid challenge were included. Cardiac index (CI) and Scvo2 were measured before and after fluid challenges. The changes of CI (ΔCI) and the changes of Scvo2 (ΔScvo2) were calculated and analyzed using Pearson correlation...
October 19, 2016: Journal of Critical Care
https://www.readbyqxmd.com/read/27815151/right-atrial-pressure-in-the-critically-ill-how-to-measure-what-is-the-value-what-are-the-limitations
#4
REVIEW
Sheldon Magder
Right atrial pressure (Pra) is determined by the interaction of the function of the heart as a pump, called cardiac function, and the factors that determine the return of blood to heart, called return function. Thus, monitoring Pra or its surrogate, central venous pressure (CVP), can give important insights into mechanisms behind changes in hemodynamic status, responses to interventions, and the likelihood of diagnoses. Examination of the components of the Pra tracing, especially during the ventilator cycle, also can give information about right heart diastolic function, status of the tricuspid valve, volume responsiveness and the cardiac rhythm...
November 1, 2016: Chest
https://www.readbyqxmd.com/read/27787407/vasodilators-in-septic-shock-resuscitation-a-clinical-perspective
#5
Thiago Domingos Corrêa, Roberto Rabello Filho, Murillo Santucci Cesar Assunção, Eliézer Silva, Alexandre Lima
Microcirculatory abnormalities have been shown to be frequent in patients with septic shock despite "normalization" of systemic hemodynamics. Several studies have explored the impact of vasodilator therapy (prostacyclin, inhaled nitric oxide, topic acetylcholine and nitroglycerin) on microcirculation and tissue perfusion, with contradictory findings.In this narrative review, we briefly present the pathophysiological aspects of microcirculatory dysfunction, and depict the evidence supporting the use of vasodilators and other therapeutic interventions (fluid administration, blood transfusion, vasopressors and dobutamine) aiming to improve the microcirculatory flow in septic shock patients...
October 26, 2016: Shock
https://www.readbyqxmd.com/read/27774825/optimum-treatment-of-vasopressor-dependent-distributive-shock
#6
Jean-Louis Vincent, Marc Leone
Distributive shock is associated with decreased systemic vascular resistance and altered oxygen extraction. Septic shock is the most frequent form of distributive shock. In shock states, duration of hypotension is associated with poor outcomes. The speed at which treatment to restore adequate perfusion pressure is initiated is, therefore, important to improve survival. Areas covered: This review presents an overview of the literature related to the management of vasopressor-dependent distributive shock, and in particular the relationship between arterial pressure and organ perfusion and function...
November 7, 2016: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/27749318/diagnostic-accuracy-of-the-inferior-vena-cava-collapsibility-to-predict-fluid-responsiveness-in-spontaneously-breathing-patients-with-sepsis-and-acute-circulatory-failure
#7
Sebastien Preau, Perrine Bortolotti, Delphine Colling, Florent Dewavrin, Vincent Colas, Benoit Voisin, Thierry Onimus, Elodie Drumez, Alain Durocher, Alban Redheuil, Fabienne Saulnier
OBJECTIVE: To investigate whether the collapsibility index of the inferior vena cava recorded during a deep standardized inspiration predicts fluid responsiveness in nonintubated patients. DESIGN: Prospective, nonrandomized study. SETTING: ICUs at a general and a university hospital. PATIENTS: Nonintubated patients without mechanical ventilation (n = 90) presenting with sepsis-induced acute circulatory failure and considered for volume expansion...
September 30, 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27734109/conservative-fluid-management-or-deresuscitation-for-patients-with-sepsis-or-acute-respiratory-distress-syndrome-following-the-resuscitation-phase-of-critical-illness-a-systematic-review-and-meta-analysis
#8
Jonathan A Silversides, Emmet Major, Andrew J Ferguson, Emma E Mann, Daniel F McAuley, John C Marshall, Bronagh Blackwood, Eddy Fan
BACKGROUND: It is unknown whether a conservative approach to fluid administration or deresuscitation (active removal of fluid using diuretics or renal replacement therapy) is beneficial following haemodynamic stabilisation of critically ill patients. PURPOSE: To evaluate the efficacy and safety of conservative or deresuscitative fluid strategies in adults and children with acute respiratory distress syndrome (ARDS), sepsis or systemic inflammatory response syndrome (SIRS) in the post-resuscitation phase of critical illness...
October 12, 2016: Intensive Care Medicine
https://www.readbyqxmd.com/read/27705084/levosimendan-for-the-prevention-of-acute-organ-dysfunction-in-sepsis
#9
Anthony C Gordon, Gavin D Perkins, Mervyn Singer, Daniel F McAuley, Robert M L Orme, Shalini Santhakumaran, Alexina J Mason, Mary Cross, Farah Al-Beidh, Janis Best-Lane, David Brealey, Christopher L Nutt, James J McNamee, Henrik Reschreiter, Andrew Breen, Kathleen D Liu, Deborah Ashby
Background Levosimendan is a calcium-sensitizing drug with inotropic and other properties that may improve outcomes in patients with sepsis. Methods We conducted a double-blind, randomized clinical trial to investigate whether levosimendan reduces the severity of organ dysfunction in adults with sepsis. Patients were randomly assigned to receive a blinded infusion of levosimendan (at a dose of 0.05 to 0.2 μg per kilogram of body weight per minute) for 24 hours or placebo in addition to standard care. The primary outcome was the mean daily Sequential Organ Failure Assessment (SOFA) score in the intensive care unit up to day 28 (scores for each of five systems range from 0 to 4, with higher scores indicating more severe dysfunction; maximum score, 20)...
October 5, 2016: New England Journal of Medicine
https://www.readbyqxmd.com/read/27686349/restricting-volumes-of-resuscitation-fluid-in-adults-with-septic-shock-after-initial-management-the-classic-randomised-parallel-group-multicentre-feasibility-trial
#10
Peter B Hjortrup, Nicolai Haase, Helle Bundgaard, Simon L Thomsen, Robert Winding, Ville Pettilä, Anne Aaen, David Lodahl, Rasmus E Berthelsen, Henrik Christensen, Martin B Madsen, Per Winkel, Jørn Wetterslev, Anders Perner
PURPOSE: We assessed the effects of a protocol restricting resuscitation fluid vs. a standard care protocol after initial resuscitation in intensive care unit (ICU) patients with septic shock. METHODS: We randomised 151 adult patients with septic shock who had received initial fluid resuscitation in nine Scandinavian ICUs. In the fluid restriction group fluid boluses were permitted only if signs of severe hypoperfusion occurred, while in the standard care group fluid boluses were permitted as long as circulation continued to improve...
September 30, 2016: Intensive Care Medicine
https://www.readbyqxmd.com/read/27685848/fluid-composition-and-acute-kidney-injury
#11
Fernando G Zampieri, Alexandre B Libório, Alexandre B Cavalcanti
PURPOSE OF REVIEW: To describe recent advances in the understanding of the role of fluid composition in renal outcomes in critically ill patients. RECENT FINDINGS: The debate on fluid composition is now focused in a pragmatic discussion on fluid electrolyte composition. The resurgence of this debate was propelled by several observational studies that suggested that balanced (i.e., low chloride) solutions were associated with less acute kidney injury in critically ill patients...
December 2016: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/27673307/will-this-hemodynamically-unstable-patient-respond-to-a-bolus-of-intravenous-fluids
#12
Peter Bentzer, Donald E Griesdale, John Boyd, Kelly MacLean, Demetrios Sirounis, Najib T Ayas
IMPORTANCE: Fluid overload occurring as a consequence of overly aggressive fluid resuscitation may adversely affect outcome in hemodynamically unstable critically ill patients. Therefore, following the initial fluid resuscitation, it is important to identify which patients will benefit from further fluid administration. OBJECTIVE: To identify predictors of fluid responsiveness in hemodynamically unstable patients with signs of inadequate organ perfusion. DATA SOURCES AND STUDY SELECTION: Search of MEDLINE and EMBASE (1966 to June 2016) and reference lists from retrieved articles, previous reviews, and physical examination textbooks for studies that evaluated the diagnostic accuracy of tests to predict fluid responsiveness in hemodynamically unstable adult patients who were defined as having refractory hypotension, signs of organ hypoperfusion, or both...
September 27, 2016: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/27600122/the-physiologic-basis-of-burn-shock-and-the-need-for-aggressive-fluid-resuscitation
#13
REVIEW
Lisa Rae, Philip Fidler, Nicole Gibran
Burn trauma in the current age of medical care still portends a 3% to 8% mortality. Of patients who die from their burn injuries, 58% of deaths occur in the first 72 hours after injury, indicating death from the initial burn shock is still a major cause of burn mortality. Significant thermal injury incites an inflammatory response, which distinguishes burns from other trauma. This article focuses on the current understanding of the pathophysiology of burn shock, the inflammatory response, and the direction of research and targeted therapies to improve resuscitation, morbidity, and mortality...
October 2016: Critical Care Clinics
https://www.readbyqxmd.com/read/27600123/colloids-in-acute-burn-resuscitation
#14
REVIEW
Robert Cartotto, David Greenhalgh
Colloids have been used in varying capacities throughout the history of formula-based burn resuscitation. There is sound experimental evidence that demonstrates colloids' ability to improve intravascular colloid osmotic pressure, expand intravascular volume, reduce resuscitation requirements, and limit edema in unburned tissue following a major burn. Fresh frozen plasma appears to be a useful and effective immediate burn resuscitation fluid but its benefits must be weighed against its costs, and risks of viral transmission and acute lung injury...
October 2016: Critical Care Clinics
https://www.readbyqxmd.com/read/27600124/monitoring-end-points-of-burn-resuscitation
#15
REVIEW
Daniel M Caruso, Marc R Matthews
This article discusses commonly used methods of monitoring and determining the end points of resuscitation. Each end point of resuscitation is examined as it relates to use in critically ill burn patients. Published medical literature, clinical trials, consensus trials, and expert opinion regarding end points of resuscitation were gathered and reviewed. Specific goals were a detailed examination of each method in the critical care population and how this methodology can be used in the burn patient. Although burn resuscitation is monitored and administered using the methodology as seen in medical/surgical intensive care settings, special consideration for excessive edema formation, metabolic derangements, and frequent operative interventions must be considered...
October 2016: Critical Care Clinics
https://www.readbyqxmd.com/read/27600129/complicated-burn-resuscitation
#16
REVIEW
David T Harrington
More than 4 decades after the creation of the Brooke and Parkland formulas, burn practitioners still argue about which formula is the best. So it is no surprise that there is no consensus about how to resuscitate a thermally injured patient with a significant comorbidity such as heart failure or cirrhosis or how to resuscitate a patient after an electrical or inhalation injury or a patient whose resuscitation is complicated by renal failure. All of these scenarios share a common theme in that the standard rule book does not apply...
October 2016: Critical Care Clinics
https://www.readbyqxmd.com/read/27600130/fluid-creep-and-over-resuscitation
#17
REVIEW
Jeffrey R Saffle
Fluid creep is the term applied to a burn resuscitation, which requires more fluid than predicted by standard formulas. Fluid creep is common today and is linked to several serious edema-related complications. Increased fluid requirements may accompany the appropriate resuscitation of massive injuries but dangerous fluid creep is also caused by overly permissive fluid infusion and the lack of colloid supplementation. Several strategies for recognizing and treating fluid creep are presented.
October 2016: Critical Care Clinics
https://www.readbyqxmd.com/read/27592289/echocardiography-as-a-guide-for-fluid-management
#18
REVIEW
John H Boyd, Demetrios Sirounis, Julien Maizel, Michel Slama
BACKGROUND: In critically ill patients at risk for organ failure, the administration of intravenous fluids has equal chances of resulting in benefit or harm. While the intent of intravenous fluid is to increase cardiac output and oxygen delivery, unwelcome results in those patients who do not increase their cardiac output are tissue edema, hypoxemia, and excess mortality. Here we briefly review bedside methods to assess fluid responsiveness, focusing upon the strengths and pitfalls of echocardiography in spontaneously breathing mechanically ventilated patients as a means to guide fluid management...
September 4, 2016: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/27536694/fluid-management-for-critically-ill-patients-a-review-of-the-current-state-of-fluid-therapy-in-the-intensive-care-unit
#19
REVIEW
Erin Frazee, Kianoush Kashani
BACKGROUND: Intravenous fluids (IVF) are frequently utilized to restore intravascular volume in patients with distributive and hypovolemic shock. Although the benefits of the appropriate use of fluids in intensive care units (ICUs) and hospitals are well described, there is growing knowledge regarding the potential risks of volume overload and its impact on organ failure and mortality. To avoid volume overload and its associated complications, strategies to identify fluid responsiveness are developed and utilized more often among ICU patients...
June 2016: Kidney Diseases
https://www.readbyqxmd.com/read/27591389/inferior-vena-cava-diameter-variation-compared-with-pulse-pressure-variation-as-predictors-of-fluid-responsiveness-in-patients-with-sepsis
#20
Pongdhep Theerawit, Thotsaporn Morasert, Yuda Sutherasan
BACKGROUND: Currently, physicians employ pulse pressure variation (PPV) as a gold standard for predicting fluid responsiveness. However, employing ultrasonography in intensive care units is increasing, including using the ultrasonography for assessment of fluid responsiveness. Data comparing the performance of both methods are still lacking. This is the reason for the present study. MATERIALS AND METHODS: We conducted a prospective observational study in patients with sepsis requiring fluid challenge...
December 2016: Journal of Critical Care
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