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Mladinov D, Isaza E, Gosling AF, Clark AL, Kukreja J, Brzezinski M. Perioperative Fluid Management. Anesthesiol Clin 2023; 41:613-629. [PMID: 37516498 DOI: 10.1016/j.anclin.2023.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/31/2023]
Abstract
The medical complexity of the geriatric patients has been steadily rising. Still, as outcomes of surgical procedures in the elderly are improving, centers are pushing boundaries. There is also a growing appreciation of the importance of perioperative fluid management on postoperative outcomes, especially in the elderly. Optimal fluid management in this cohort is challenging due to the combination of age-related physiological changes in organ function, increased comorbid burden, and larger fluid shifts during more complex surgical procedures. The current state-of-the-art approach to fluid management in the perioperative period is outlined.
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Affiliation(s)
- Domagoj Mladinov
- Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, 75 Francis Street, CWN-L1, Boston, MA 02115, USA
| | - Erin Isaza
- University of California, San Francisco, School of Medicine, 500 Parnassus Avenue, MU 405 W San Francisco, CA 94143, USA
| | - Andre F Gosling
- Department of Anesthesiology and Perioperative Medicine, University of Alabama at Birmingham, 619 19th Street South, JT 845D, Birmingham, AL 35249, USA
| | - Adrienne L Clark
- Department of Anesthesia and Perioperative Care, University of California, 500 Parnassus Avenue, MU 405 W San Francisco, CA 94143, USA
| | - Jasleen Kukreja
- Division of Cardiothoracic Surgery, Department of Surgery, University of California, 500 Parnassus Avenue, MU 405 W San Francisco, CA 94143, USA
| | - Marek Brzezinski
- Department of Anesthesia and Perioperative Care, University of California, VA Medical Center-San Francisco, 4150 Clement Street, San Francisco CA 94121, USA.
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Kim SJ, Kim SY, Lee HS, Park G, Yoon EJ, Heo S, Koo BN. Ability of dynamic preload indices to predict fluid responsiveness in a high femoral-to-radial arterial pressure gradient: a retrospective study. Anesth Pain Med (Seoul) 2022; 16:360-367. [PMID: 35139617 PMCID: PMC8828628 DOI: 10.17085/apm.21001] [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: 12/31/2020] [Accepted: 07/20/2021] [Indexed: 11/18/2022] Open
Abstract
Background Dynamic preload indices may predict fluid responsiveness in end-stage liver disease. However, their usefulness in patients with altered vascular compliance is uncertain. This study is the first to evaluate whether dynamic indices can reliably predict fluid responsiveness in patients undergoing liver transplantation with a high femoral-to-radial arterial pressure gradient (PG). Methods Eighty liver transplant recipients were retrospectively categorized as having a normal (n = 56) or high (n = 24, difference in systolic pressure ≥ 10 mmHg and/or mean pressure ≥ 5 mmHg) femoral-to-radial arterial PG, measured immediately after radial and femoral arterial cannulation. The ability of dynamic preload indices (stroke volume variation, pulse pressure variation [PPV], pleth variability index) to predict fluid responsiveness was assessed before the surgery. Fluid replacement of 500 ml of crystalloid solution was performed over 15 min. Fluid responsiveness was defined as ≥ 15% increase in the stroke volume index. The area under the receiver-operating characteristic curve (AUC) indicated the prediction of fluid responsiveness. Results Fourteen patients in the normal, and eight in the high PG group were fluid responders. The AUCs for PPV in the normal, high PG groups and total patients were 0.702 (95% confidence interval [CI] 0.553–0.851, P = 0.008), 0.633 (95% CI 0.384–0.881, P = 0.295) and 0.667 (95% CI 0.537–0.798, P = 0.012), respectively. No other index predicted fluid responsiveness. Conclusion PPV can be used as a dynamic index of fluid responsiveness in patients with end-stage liver disease but not in patients with altered vascular compliance.
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Affiliation(s)
- Seon Ju Kim
- Department of Anesthesiology and Pain Medicine, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - So Yeon Kim
- Department of Anesthesiology and Pain Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Hye Sun Lee
- Department of Research Affairs, Biostatistics Collaboration Unit, Yonsei University College of Medicine, Seoul, Korea
| | - Goeun Park
- Department of Research Affairs, Biostatistics Collaboration Unit, Yonsei University College of Medicine, Seoul, Korea
| | - Eun Jang Yoon
- Department of Anesthesiology and Pain Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Sungtaik Heo
- Department of Anesthesiology and Pain Medicine, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - Bon-Nyeo Koo
- Department of Anesthesiology and Pain Medicine, Yonsei University College of Medicine, Seoul, Korea
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de Keijzer IN, Scheeren TWL. Perioperative Hemodynamic Monitoring: An Overview of Current Methods. Anesthesiol Clin 2021; 39:441-456. [PMID: 34392878 DOI: 10.1016/j.anclin.2021.03.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Perioperative hemodynamic monitoring is an essential part of anesthetic care. In this review, we aim to give an overview of methods currently used in the clinical routine and experimental methods under development. The technical aspects of the mentioned methods are discussed briefly. This review includes methods to monitor blood pressures, for example, arterial pressure, mean systemic filling pressure and central venous pressure, and volumes, for example, global end-diastolic volume (GEDV) and extravascular lung water. In addition, monitoring blood flow (cardiac output) and fluid responsiveness (preload) will be discussed.
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Affiliation(s)
- Ilonka N de Keijzer
- Department of Anesthesiology, University Medical Center Groningen, Hanzeplein 1, PO Box 30.001, 9700 RB Groningen, The Netherlands.
| | - Thomas W L Scheeren
- Department of Anesthesiology, University Medical Center Groningen, Hanzeplein 1, PO Box 30.001, 9700 RB Groningen, The Netherlands
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Sarı Ş, Arıcan Ş, Topal A, Hacıbeyoğlu G, Tuncer Uzun S. Preoperatif vena cava inferior ultrasonografisi gastrointestinal cerrahi altindaki hastalarda indüksiyon sonrası hipotansiyonu tahmin edebilir. CUKUROVA MEDICAL JOURNAL 2019. [DOI: 10.17826/cumj.512617] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Paranjape VV, Shih AC, Garcia-Pereira FL. Use of a modified passive leg-raising maneuver to predict fluid responsiveness during experimental induction and correction of hypovolemia in healthy isoflurane-anesthetized pigs. Am J Vet Res 2019; 80:24-32. [PMID: 30605039 DOI: 10.2460/ajvr.80.1.24] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To evaluate the use of a modified passive leg-raising maneuver (PLRM) to predict fluid responsiveness during experimental induction and correction of hypovolemia in isoflurane-anesthetized pigs. ANIMALS 6 healthy male Landrace pigs. PROCEDURES Pigs were anesthetized with isoflurane, positioned in dorsal recumbency, and instrumented. Following induction of a neuromuscular blockade, pigs were mechanically ventilated throughout 5 sequential experimental stages during which the blood volume was manipulated so that subjects transitioned from normovolemia (baseline) to hypovolemia (blood volume depletion, 20% and 40%), back to normovolemia, and then to hypervolemia. During each stage, hemodynamic variables were measured before and 3 minutes after a PLRM and 1 minute after the pelvic limbs were returned to their original position. The PLRM consisted of raising the pelvic limbs and caudal portion of the abdomen to a 15° angle relative to the horizontal plane. RESULTS Hemodynamic variables did not vary in response to the PLRM when pigs were normovolemic or hypervolemic. When pigs were hypovolemic, the PLRM resulted in a significant increase in cardiac output and decrease in plethysomographic variability index and pulse pressure variation. When the pelvic limbs were returned to their original position, cardiac output and pulse pressure variation rapidly returned to their pre-PLRM values, but the plethysomographic variability index did not. CONCLUSIONS AND CLINICAL RELEVANCE Results suggested a modified PLRM might be useful for identification of hemodynamically unstable animals that are likely to respond to fluid therapy. Further research is necessary to validate the described PLRM for prediction of fluid responsiveness in clinically ill animals.
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Taniguchi LU, Zampieri FG, Nassar AP. Applicability of respiratory variations in stroke volume and its surrogates for dynamic fluid responsiveness prediction in critically ill patients: a systematic review of the prevalence of required conditions. Rev Bras Ter Intensiva 2018; 29:70-76. [PMID: 28444075 PMCID: PMC5385988 DOI: 10.5935/0103-507x.20170011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 08/17/2016] [Indexed: 12/16/2022] Open
Abstract
Objective The present systematic review searched for published data on the prevalence
of required conditions for proper assessment in critically ill patients. Methods The Medline, Scopus and Web of Science databases were searched to identify
studies that evaluated the prevalence of validated conditions for the fluid
responsiveness assessment using respiratory variations in the stroke volume
or another surrogate in adult critically ill patients. The primary outcome
was the suitability of the fluid responsiveness evaluation. The secondary
objectives were the type and prevalence of pre-requisites evaluated to
define the suitability. Results Five studies were included (14,804 patients). High clinical and statistical
heterogeneity was observed (I2 = 98.6%), which prevented us from
pooling the results into a meaningful summary conclusion. The most frequent
limitation identified is the absence of invasive mechanical ventilation with
a tidal volume ≥ 8mL/kg. The final suitability for the fluid
responsiveness assessment was low (in four studies, it varied between 1.9 to
8.3%, in one study, it was 42.4%). Conclusion Applicability of the dynamic indices of preload responsiveness requiring
heart-lung interactions might be limited in daily practice.
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Affiliation(s)
- Leandro Utino Taniguchi
- Disciplina de Emergências Clínicas, Faculdade de Medicina, Universidade de São Paulo - São Paulo (SP), Brasil.,Instituto de Ensino e Pesquisa, Hospital Sírio-Libanês - São Paulo (SP), Brasil
| | - Fernando Godinho Zampieri
- Disciplina de Emergências Clínicas, Faculdade de Medicina, Universidade de São Paulo - São Paulo (SP), Brasil.,Unidade de Terapia Intensiva, Hospital Alemão Oswaldo Cruz - São Paulo (SP), Brasil
| | - Antonio Paulo Nassar
- Disciplina de Emergências Clínicas, Faculdade de Medicina, Universidade de São Paulo - São Paulo (SP), Brasil.,Unidade de Terapia Intensiva de Adultos, A.C. Camargo Cancer Center - São Paulo (SP), Brasil
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Abstract
Thoracic injuries account for 25% of all civilian deaths. Blunt force injuries are a subset of thoracic injuries and include injuries of the tracheobronchial tree, pleural space, and lung parenchyma. Early identification of these injuries during initial assessment and resuscitation is essential to reduce associated morbidity and mortality rates. Management of airway injuries includes definitive airway control with identification and repair of tracheobronchial injuries. Management of pneumothorax and hemothorax includes pleural space drainage and control of ongoing hemorrhage, along with monitoring for complications such as empyema and chylothorax. Injuries of the lung parenchyma, such as pulmonary contusion, may require support of oxygenation and ventilation through both conventional and nonconventional mechanical ventilation strategies. General strategies to improve pulmonary function and gas exchange include balanced fluid resuscitation to targeted volume-based resuscitation end points, positioning therapy, and pain management.
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Silverstein DC, Cozzi EM, Hopkins AS, Keefe TJ. Microcirculatory effects of intravenous fluid administration in anesthetized dogs undergoing elective ovariohysterectomy. Am J Vet Res 2014; 75:809-17. [PMID: 25157884 DOI: 10.2460/ajvr.75.9.809] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To assess the microcirculatory effects of IV fluid administration in healthy anesthetized dogs undergoing elective ovariohysterectomy. ANIMALS 49 client-owned dogs. PROCEDURES Dogs were sedated, and anesthesia was induced with propofol and diazepam and maintained with isoflurane in oxygen. Dogs received lactated Ringer's solution (LRS) IV at rates of 0, 10, or 20 mL/kg/h. Videomicroscopy was used to assess and record effects of LRS administration on microcirculation in the buccal mucosa. Measurements of microcirculatory (total vessel density, proportion of perfused vessels, microcirculatory flow index, and perfused vessel density by vessel size [< 20 μm, ≥ 20 μm, and all diameters]) and other physiologic variables (heart rate, Doppler-measured blood pressure, oxygen saturation as measured by pulse oximetry, capillary refill time, and body temperature) were compared among groups at baseline (immediately after anesthetic induction), 30 and 60 minutes afterward, and overall. RESULTS Neither the proportion of perfused vessels nor microcirculatory flow index varied among treatment groups at any time point, regardless of vessel size. For vessels < 20 μm in diameter and for all vessels combined, total and perfused vessel density were similar among groups. For vessels ≥ 20 μm in diameter, total vessel density was significantly greater in the 20 mL/kg/h group than in other groups, and perfused vessel density was significantly greater in the 20 mL/kg/h group than in the 0 mL/kg/h group, when all time points were considered. Other physiologic variables were similar among groups. CONCLUSIONS AND CLINICAL RELEVANCE Total and perfused vessel density of vessels ≥ 20 μm in diameter (mostly venules) were greatest in dogs that received 20 mL of LRS/kg/h. Further research is required to evaluate clinical importance of these findings.
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Affiliation(s)
- Deborah C Silverstein
- Department of Clinical Studies, Matthew J. Ryan Veterinary Hospital, University of Pennsylvania, Philadelphia, PA 19104
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Abstract
Thoracic injuries account for 25% of all civilian deaths. Blunt force injuries are a subset of thoracic injuries and include injuries of the tracheobronchial tree, pleural space, and lung parenchyma. Early identification of these injuries during initial assessment and resuscitation is essential to reduce associated morbidity and mortality rates. Management of airway injuries includes definitive airway control with identification and repair of tracheobronchial injuries. Management of pneumothorax and hemothorax includes pleural space drainage and control of ongoing hemorrhage, along with monitoring for complications such as empyema and chylothorax. Injuries of the lung parenchyma, such as pulmonary contusion, may require support of oxygenation and ventilation through both conventional and nonconventional mechanical ventilation strategies. General strategies to improve pulmonary function and gas exchange include balanced fluid resuscitation to targeted volume-based resuscitation end points, positioning therapy, and pain management.
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Affiliation(s)
- John J. Gallagher
- John J. Gallagher is Clinical Nurse Specialist/Trauma Program Manager, Hospital of the University of Pennsylvania, 3400 Spruce St, Philadelphia, PA 19104
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Bouchacourt JP, Riva JA, Grignola JC. The increase of vasomotor tone avoids the ability of the dynamic preload indicators to estimate fluid responsiveness. BMC Anesthesiol 2013; 13:41. [PMID: 24215252 PMCID: PMC4175099 DOI: 10.1186/1471-2253-13-41] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Accepted: 11/05/2013] [Indexed: 11/27/2022] Open
Abstract
Background The use of vasoconstrictor can affect the dynamic indices to predict fluid responsiveness. We investigate the effects of an increase of vascular tone on dynamic variables of fluid responsiveness in a rabbit model of hemorrhage, and to examine the ability of the arterial pressure surrogates dynamic indices to track systolic volume variation (SVV) during hypovolemia under increased vasomotor tone. Methods Eighteen anesthetized and mechanically ventilated rabbits were studied during normovolemia (BL) and after blood progressive removal (15 mL/kg, BW). Other two sets of data were obtained during PHE infusion with normovolemia (BL + PHE) and during hypovolemia (BW + PHE). We measured central venous and left ventricular (LV) pressures and infra diaphragmatic aortic blood flow (AoF) and pressure. Pulse pressure variation (PPV), systolic pressure variation (SPV) and SVV were estimated manually by the variation of beat-to-beat PP, SP and SV, respectively. We also calculated PPVapnea as 100 × (PPmax-PPmin)/PP during apnea. The vasomotor tone was estimated by total peripheral resistance (TPR = mean aortic pressure/mean AoF), dynamic arterial elastance (Eadyn = PPV/SVV) and arterial compliance (C = SV/PP). We assessed LV preload by LV end-diastolic pressure (LVEDP). We compared the trending abilities between SVV and pressure surrogate indices using four-quadrant plots and polar plots. Results Baseline PPV, SPV, PPVapnea, and SVV increased significantly during hemorrhage, with a decrease of AoF (P < 0.05). PHE induced significant TPR and Eadyn increase and C decrease in bled animals, and a further decrease in AoF with a significant decrease of all dynamic indices. There was a significant correlation between SVV and PPV, PPVapnea and SPV in normal vasomotor tone (r2 ≥ 0.5). The concordance rate was 91%, 95% and 76% between SVV and PPV, PPVapnea and SPV, respectively, in accordance with the polar plot analysis. During PHE infusion, there was no correlation between SVV and its surrogates, and both four-quadrant plot and polar plot showed poor trending. Conclusion In this animal model of hemorrhage and increased vasomotor tone induced by phenylephrine the ability of dynamic indices to predict fluid responsiveness seems to be impaired, masking the true fluid loss. Moreover, the arterial pressure surrogates have not the reliable trending ability against SVV.
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Affiliation(s)
- Juan P Bouchacourt
- Department of Pathophysiology, Hospital de Clínicas, Facultad de Medicina, Universidad de la República, Avda Italia 2870, PC 11600, Montevideo, Uruguay.
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Renner J, Scholz J, Bein B. Monitoring cardiac function: echocardiography, pulse contour analysis and beyond. Best Pract Res Clin Anaesthesiol 2013; 27:187-200. [PMID: 24012231 DOI: 10.1016/j.bpa.2013.06.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Accepted: 06/12/2013] [Indexed: 11/25/2022]
Abstract
Haemodynamic monitoring has developed considerably over the last decades, nowadays comprising a wide spectrum of different technologies ranging from invasive to completely non-invasive techniques. At present, the evidence to continuously measure and optimise stroke volume, that is, cardiac output, in order to prevent occult hypoperfusion in the perioperative setting and consequently to improve patients' outcome is substantial. Surprisingly, there is a striking discrepancy between the developments in advanced haemodynamic monitoring combined with evidence-based knowledge on the one hand and daily clinical routine on the other hand. Recent trials have shown that perioperative mortality is higher than anticipated, emphasising the need for the speciality of anaesthesiology to face the problem and to translate proven concepts into clinical routine to improve patients' outcome. One basic principle of these concepts is to monitor and to optimise cardiac function by means of advanced haemodynamic monitoring, using echocardiography, pulse contour analysis and beyond.
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Affiliation(s)
- Jochen Renner
- Department of Anaesthesiology and Intensive Care Medicine, University Hospital Schleswig-Holstein, Campus Kiel, Schwanenweg 21, D-24105 Kiel, Germany.
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Schmid M, Prettenthaler H, Weger C, Smolle KH. Evaluation of a novel automated non-invasive pulse pressure variation algorithm. Comput Biol Med 2013; 43:1583-9. [PMID: 24034750 DOI: 10.1016/j.compbiomed.2013.07.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Revised: 07/15/2013] [Accepted: 07/17/2013] [Indexed: 10/26/2022]
Abstract
In mechanically ventilated patients, Pulse Pressure Variation (PPV) has been shown to be a useful parameter to guide fluid management. We evaluated a real-time automated PPV-algorithm by comparing it to manually calculated PPV-values. In 10 critically ill patients, blood pressure was measured invasively (IBP) and non-invasively (CNAP(®) Monitor, CNSystems Medizintechnik, Austria). PPV was determined manually and compared to automated PPV values: PPVmanIBP vs. PPVautoIBP was -0.19 ± 1.65% (mean bias ± standard deviation), PPVmanCNAP vs. PPVautoCNAP was -1.02 ± 2.03% and PPVautoCNAP vs. PPVmanIBP was -2.10 ± 3.14%, suggesting that the automated CNAP(®) PPV-algorithm works well on both blood pressure waveforms but needs further clinical evaluation.
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Affiliation(s)
- Martin Schmid
- Institute for Medical Engineering, University of Technology Graz, Austria
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Barratt-Due A, Thorgersen EB, Egge K, Pischke S, Sokolov A, Hellerud BC, Lindstad JK, Pharo A, Bongoni AK, Rieben R, Nunn M, Scott H, Mollnes TE. Combined inhibition of complement C5 and CD14 markedly attenuates inflammation, thrombogenicity, and hemodynamic changes in porcine sepsis. THE JOURNAL OF IMMUNOLOGY 2013; 191:819-27. [PMID: 23761634 DOI: 10.4049/jimmunol.1201909] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Complement and the TLR family constitute two important branches of innate immunity. We previously showed attenuating effects on inflammation and thromogenicity by inhibiting the TLR coreceptor CD14 in porcine sepsis. In the present study, we explored the effect of the C5 and leukotriene B4 inhibitor Ornithodoros moubata complement inhibitor (OmCI; also known as coversin) alone and combined with anti-CD14 on the early inflammatory, hemostatic, and hemodynamic responses in porcine Escherichia coli-induced sepsis. Pigs were randomly allocated to negative controls (n = 6), positive controls (n = 8), intervention with OmCI (n = 8), or with OmCI and anti-CD14 (n = 8). OmCI ablated C5 activation and formation of the terminal complement complex and significantly decreased leukotriene B4 levels in septic pigs. Granulocyte tissue factor expression, formation of thrombin-antithrombin complexes (p < 0.001), and formation of TNF-α and IL-6 (p < 0.05) were efficiently inhibited by OmCI alone and abolished or strongly attenuated by the combination of OmCI and anti-CD14 (p < 0.001 for all). Additionally, the combined therapy attenuated the formation of plasminogen activator inhibitor-1 (p < 0.05), IL-1β, and IL-8, increased the formation of IL-10, and abolished the expression of wCD11R3 (CD11b) and the fall in neutrophil cell count (p < 0.001 for all). Finally, OmCI combined with anti-CD14 delayed increases in heart rate by 60 min (p < 0.05) and mean pulmonary artery pressure by 30 min (p < 0.01). Ex vivo studies confirmed the additional effect of combining anti-CD14 with OmCI. In conclusion, upstream inhibition of the key innate immunity molecules, C5 and CD14, is a potential broad-acting treatment regimen in sepsis as it efficiently attenuated inflammation and thrombogenicity and delayed hemodynamic changes.
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Affiliation(s)
- Andreas Barratt-Due
- Department of Immunology, Oslo University Hospital, National Hospital, University of Oslo, 0424 Oslo, Norway.
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The role of bradykinin and the effect of the bradykinin receptor antagonist icatibant in porcine sepsis. Shock 2012; 36:517-23. [PMID: 21921836 DOI: 10.1097/shk.0b013e3182336a34] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Bradykinin (BK) is regarded as an important mediator of edema, shock, and inflammation during sepsis. In this study, we evaluated the contribution of BK in porcine sepsis by blocking BK and by measuring the stable BK metabolite, BK1-5, using anesthetized pigs. The effect of BK alone, the efficacy of icatibant to block this effect, and the recovery of BK measured as plasma BK1-5 were first investigated. Purified BK injected intravenously induced an abrupt fall in blood pressure, which was completely prevented by pretreatment with icatibant. BK1-5 was detected in plasma corresponding to the doses given. The effect of icatibant was then investigated in an established model of porcine gram-negative sepsis. Neisseria meningitidis was infused intravenously without any pretreatment (n = 8) or pretreated with icatibant (n = 8). Negative controls received saline only. Icatibant-treated pigs developed the same degree of severe sepsis as did the controls. Both groups had massive capillary leakage, leukopenia, and excessive cytokine release. The plasma level of BK1-5 was low or nondetectable in all pigs. The latter observation was confirmed in supplementary studies with pigs undergoing Escherichia coli or polymicrobial sepsis induced by cecal ligation and puncture. In conclusion, icatibant completely blocked the hemodynamic effects of BK but had no beneficial effects on N. meningitidis-induced edema, shock, and inflammation. This and the fact that plasma BK1-5 in all the septic pigs was virtually nondetectable question the role of BK as an important mediator of porcine sepsis. Thus, the data challenge the current view of the role of BK also in human sepsis.
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Haas S, Trepte C, Hinteregger M, Fahje R, Sill B, Herich L, Reuter DA. Prediction of volume responsiveness using pleth variability index in patients undergoing cardiac surgery after cardiopulmonary bypass. J Anesth 2012; 26:696-701. [DOI: 10.1007/s00540-012-1410-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Accepted: 04/23/2012] [Indexed: 11/28/2022]
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Muir WW, Kijtawornrat A, Ueyama Y, Radecki SV, Hamlin RL. Effects of intravenous administration of lactated Ringer's solution on hematologic, serum biochemical, rheological, hemodynamic, and renal measurements in healthy isoflurane-anesthetized dogs. J Am Vet Med Assoc 2011; 239:630-7. [PMID: 21879963 DOI: 10.2460/javma.239.5.630] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To determine the hematologic, serum biochemical, rheological, hemodynamic, and renal effects of IV administration of lactated Ringer's solution (LRS) to healthy anesthetized dogs. DESIGN 4-period, 4-treatment cross-over study. ANIMALS 8 healthy mixed-breed dogs. PROCEDURES Each dog was anesthetized, mechanically ventilated, instrumented, and randomly assigned to receive LRS (0, 10, 20, or 30 mL/kg/h [0, 4.5, 9.1, or 13.6 mL/lb/h]), IV, on 4 occasions separated by at least 7 days. Blood hemoglobin concentration and serum total protein, albumin, lactate, and electrolyte concentrations; PCV; colloid osmotic pressure; arterial and venous pH and blood gases (Po2; Pco2); whole blood and plasma viscosity; arterial and venous blood pressures; cardiac output; results of urinalysis; urine production; glomerular filtration rate; and anesthetic recovery times were monitored. Oxygen delivery, vascular resistance, stroke volume, pulse pressure, and blood and plasma volume were calculated. RESULTS Increasing rates of LRS administration resulted in dose-dependent decreases in PCV; blood hemoglobin concentration and serum total protein and albumin concentrations; colloid osmotic pressure; and whole blood viscosity. Plasma viscosity; serum electrolyte concentrations; data from arterial and venous blood gas analysis; glomerular filtration rate; urine production; heart rate; pulse, central venous, and arterial blood pressures; pulmonary vascular resistance; and oxygen delivery did not change. Pulmonary artery pressure, stroke volume, and cardiac output increased, and systemic vascular resistance decreased. CONCLUSIONS AND CLINICAL RELEVANCE Conventional IV infusion rates of LRS to isoflurane-anesthetized dogs decreased colligative blood components; increased plasma volume, pulmonary artery pressure, and cardiac output; and did not change urine production or oxygen delivery to tissues.
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Affiliation(s)
- William W Muir
- QTest Laboratories, 6456 Fiesta Dr, Columbus, OH 43235, USA.
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Renner J, Broch O, Gruenewald M, Scheewe J, Francksen H, Jung O, Steinfath M, Bein B. Non-invasive prediction of fluid responsiveness in infants using pleth variability index. Anaesthesia 2011; 66:582-9. [DOI: 10.1111/j.1365-2044.2011.06715.x] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Abstract
Physiologic balance between fluids and electrolytes should remain stable during the perioperative period. Gaps in our understanding of how this balance is maintained has given rise to inappropriate management practices. Both failure to replace lost fluids and the infusion of excessive amounts can lead to serious consequences for the patient. There is currently renewed interest in studying the best use of fluids and/or blood products during and after surgery. This update of perioperative fluid therapy is based on a review of indexed literature retrieved by means of a PubMed search for the period of January 1999 through December 2009.
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Current world literature. Curr Opin Anaesthesiol 2010; 23:283-93. [PMID: 20404787 DOI: 10.1097/aco.0b013e328337578e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Abstract
PURPOSE OF REVIEW The aim of this review is to address and summarize some key issues and recent insights into the hemodynamic support of the trauma patient related to fluid administration. RECENT FINDINGS Colloids are not superior to crystalloids in treating hypovolemia in the trauma patient and show no survival benefit. Furthermore, several adverse effects (renal failure, bleeding complications and anaphylaxis) have been reported with the use of artificial colloids. Hypertonic saline is effective and well tolerated in the treatment of hypovolemic shock and traumatic brain injury. Potential benefits are reduced fluid requirements and immune modulation. Resuscitation strategies should depend on the type of injury (penetrating vs. blunt; concomitant brain injury). Excessive fluid resuscitation, which can cause acute respiratory distress syndrome, abdominal compartment syndrome and brain edema, should be avoided. Dynamic parameters to guide volume therapy are probably more reliable than static parameters and minimally invasive techniques to monitor the microcirculation are becoming more important to determine the endpoints of resuscitation. SUMMARY Hemodynamic support is an early goal in the treatment of the trauma patient. The use of crystalloids is currently recommended in trauma resuscitation. The amount of fluid we give should be tailored to the individual trauma patient in which clear endpoints of resuscitation are of vital importance to maximize the chances of survival.
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