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Kang DO, Nam HS, Kim S, Yoo H, Kim JW. Feasibility and safety of non-contrast optical coherence tomography imaging using hydroxyethyl starch in coronary arteries. Sci Rep 2023; 13:13818. [PMID: 37620359 PMCID: PMC10449772 DOI: 10.1038/s41598-023-40363-7] [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: 05/04/2023] [Accepted: 08/09/2023] [Indexed: 08/26/2023] Open
Abstract
Intracoronary optical coherence tomography (OCT) requires injection of flushing media for image acquisition. Alternative flushing media needs to be investigated to reduce the risk of contrast-induced renal dysfunction. We investigated the feasibility and safety of pentastarch (hydroxyethyl starch) for clinical OCT imaging. We prospectively enrolled 43 patients with 70 coronary lesions (46-stented; 24-native). Total 81 OCT pullback pairs were obtained by manual injection of iodine contrast, followed by pentastarch. Each pullback was assessed frame-by-frame using an automated customized lumen contour/stent strut segmentation algorithm. Paired images were compared for the clear image segments (CIS), blood-flushing capability, and quantitative morphometric measurements. Overall image quality, as assessed by the proportion of CIS, was comparable between the contrast- and pentastarch-flushed images (97.1% vs. 96.5%; p = 0.160). The pixel-based blood-flushing capability was similar between the groups (0.951 [0.947-0.953] vs. 0.950 [0.948-0.952], p = 0.125). Quantitative two- and three-dimensional morphometric measurements of the paired images correlated well (p < 0.001) with excellent inter-measurement variability. All patients safely underwent OCT imaging using pentastarch without resulting in clinically relevant complications or renal deterioration. Non-contrast OCT imaging using pentastarch is clinically safe and technically feasible with excellent image quality and could be a promising alternative strategy for patients at high risk of renal impairment.
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Affiliation(s)
- Dong Oh Kang
- Multimodal Imaging and Theranostic Laboratory, Cardiovascular Center, Korea University Guro Hospital, 148 Gurodong-Ro, Guro-Gu, Seoul, 08308, Republic of Korea
- Cardiovascular Center, Korea University Guro Hospital, 148 Gurodong-Ro, Guro-Gu, Seoul, 08308, Republic of Korea
| | - Hyeong Soo Nam
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-Ro, Yuseong-Gu, Daejeon, 34141, Republic of Korea
| | - Sunwon Kim
- Multimodal Imaging and Theranostic Laboratory, Cardiovascular Center, Korea University Guro Hospital, 148 Gurodong-Ro, Guro-Gu, Seoul, 08308, Republic of Korea
- Cardiovascular Center, Korea University Ansan Hospital, 123 Jeokgeum-Ro, Danwon-Gu, Ansan, 15355, Republic of Korea
| | - Hongki Yoo
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-Ro, Yuseong-Gu, Daejeon, 34141, Republic of Korea.
| | - Jin Won Kim
- Multimodal Imaging and Theranostic Laboratory, Cardiovascular Center, Korea University Guro Hospital, 148 Gurodong-Ro, Guro-Gu, Seoul, 08308, Republic of Korea.
- Cardiovascular Center, Korea University Guro Hospital, 148 Gurodong-Ro, Guro-Gu, Seoul, 08308, Republic of Korea.
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Arora V, Khatri A, Bala R, Kumar V, Arora R, Jindal S. Effect of Normal Saline versus PlasmaLyte on Coagulation and Metabolic Status in Patients Undergoing Neurosurgical Procedures. Asian J Neurosurg 2023; 18:301-305. [PMID: 37397042 PMCID: PMC10310450 DOI: 10.1055/s-0043-1768598] [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] [Indexed: 07/04/2023] Open
Abstract
Background The choice of intraoperative fluid in neurosurgical patients is important as we need to maintain adequate cerebral perfusion and oxygenation and also avoid cerebral edema. Normal saline (NS) is commonly used in neurosurgeries, but it leads to hyperchloremic metabolic acidosis, which may result in coagulopathy. Balanced crystalloid with physiochemical composition akin to that of plasma has favorable effects on metabolic profile and may avoid the problems associated with NS. Against this background, the present study aimed to compare the effects of NS versus PlasmaLyte (PL) on coagulation profile in patients undergoing neurosurgical procedures. Methods This prospective, randomized, double-blinded study was conducted in 100 adult patients scheduled to undergo various neurosurgical procedures. Patients were randomly allocated in two groups of 50 each to receive either NS or PL intraoperatively and postoperatively till 4 hours after the surgery. Hemoglobin, hematocrit, coagulation profile (PT, PTT, and INR), serum chloride, pH, blood urea, and serum creatinine were measured prior to induction (baseline) and 4 hours after completion of surgery. Results Demographic characteristics were statistically similar between the two groups. Coagulation profile parameters were comparable between the two groups at baseline as well as 4 hours after surgery. pH was significantly lower in the NS group as compared to the PL group at 4 hours after surgery. Postoperatively blood urea, serum creatinine, and serum chloride levels were significantly raised in the NS group as compared to the PL group. Hemoglobin and hematocrit values were similar between the two groups. Conclusion Coagulation profile parameters were normal and statistically similar with intraoperative infusion of NS versus PL in patients undergoing neurosurgical procedures. However, use of PL was associated with a better acid-base and renal profile in these patients.
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Affiliation(s)
- Vandna Arora
- Department of Anaesthesiology, Pt. B.D. Sharma PGIMS, Rohtak, Haryana, India
| | - Akanksha Khatri
- Department of Anaesthesiology, Pt. B.D. Sharma PGIMS, Rohtak, Haryana, India
| | - Renu Bala
- Department of Anaesthesiology, Pt. B.D. Sharma PGIMS, Rohtak, Haryana, India
| | - Vibhuti Kumar
- Department of Anaesthesiology, Pt. B.D. Sharma PGIMS, Rohtak, Haryana, India
| | - Rashmi Arora
- Department of Anaesthesiology, Pt. B.D. Sharma PGIMS, Rohtak, Haryana, India
| | - Shweta Jindal
- Department of Anaesthesiology, Pt. B.D. Sharma PGIMS, Rohtak, Haryana, India
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Barbu M, Kolsrud O, Radulovic V, Dellgren G, Björk K, Thorén A, Pivodic A, Ricksten SE, Jeppsson A. Hemostatic effects of a dextran-based priming solution for cardiopulmonary bypass: A secondary analysis of a randomized clinical trial. Thromb Res 2023; 223:139-145. [PMID: 36753875 DOI: 10.1016/j.thromres.2023.01.028] [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: 08/24/2022] [Revised: 01/15/2023] [Accepted: 01/27/2023] [Indexed: 02/03/2023]
Abstract
INTRODUCTION Intravascular fluids administered to patients may influence hemostasis. In patients undergoing cardiac surgery with cardiopulmonary bypass, the heart-lung machine is primed with 1300 ml of fluid. We assessed postoperative coagulation and platelet function in patients randomized to two different priming solutions, one colloid-based (dextran 40) and one crystalloid-based. MATERIALS AND METHODS Eighty-four elective cardiac surgery patients were randomized to either a dextran-based prime or Ringer's acetate with added mannitol. Blood samples were collected before, and 2 and 24 h after cardiopulmonary bypass. Coagulation was assessed by standard coagulation tests and rotational thromboelastometry. Platelet function was assessed with impedance aggregometry. Bleeding volumes and transfusion requirements were recorded. RESULTS Comparing the groups 2 h after bypass, the dextran group showed lower hemoglobin concentration, hematocrit, platelet count, and fibrinogen concentration, and higher INR and aPTT, as well as longer clot formation time (+41 ± 21 % vs. +8 ± 18 %, p < 0.001) and a larger reduction in fibrinogen-dependent clot strength (-37 ± 12 % vs. -7 ± 20 %, p < 0.001). Adenosine diphosphate-dependent platelet activation was reduced in the dextran group but not in the crystalloid group 2 h after bypass (-14 ± 29 % vs. -1 ± 41 %, p = 0.041). No significant between-group differences in hemostatic variables remained after 24 h, and no significant differences in perioperative bleeding volumes, re-explorations for bleeding, or transfusion rates were observed. CONCLUSIONS Compared to a crystalloid solution, a dextran-based prime had measurable negative impact on hemostatic variables but no detectable increase in bleeding volume or transfusion requirements in cardiac surgery patients.
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Affiliation(s)
- Mikael Barbu
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Department of Cardiology, Karlskrona Hospital, Karlskrona, Sweden
| | - Oscar Kolsrud
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Department of Cardiothoracic Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Vladimir Radulovic
- Department of Haematology and Coagulation Disorders, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Göran Dellgren
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Transplant Institute, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Kerstin Björk
- Department of Cardiothoracic Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Anders Thorén
- Department of Cardiothoracic Anesthesiology and Intensive Care, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Aldina Pivodic
- APNC Sweden, Gothenburg, Sweden; Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Sven-Erik Ricksten
- Department of Cardiothoracic Anesthesiology and Intensive Care, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Anders Jeppsson
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Department of Cardiothoracic Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden.
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Ta HQ, Teman NR, Kron IL, Roeser ME, Laubach VE. Steen solution protects pulmonary microvascular endothelial cells and preserves endothelial barrier after lipopolysaccharide-induced injury. J Thorac Cardiovasc Surg 2023; 165:e5-e20. [PMID: 35577593 PMCID: PMC9576825 DOI: 10.1016/j.jtcvs.2022.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 03/04/2022] [Accepted: 04/01/2022] [Indexed: 12/16/2022]
Abstract
OBJECTIVES Acute respiratory distress syndrome represents the devastating result of acute lung injury, with high mortality. Limited methods are available for rehabilitation of lungs affected by acute respiratory distress syndrome. Our laboratory has demonstrated rehabilitation of sepsis-injured lungs via normothermic ex vivo and in vivo perfusion with Steen solution (Steen). However, mechanisms responsible for the protective effects of Steen remain unclear. This study tests the hypothesis that Steen directly attenuates pulmonary endothelial barrier dysfunction and inflammation induced by lipopolysaccharide. METHODS Primary pulmonary microvascular endothelial cells were exposed to lipopolysaccharide for 4 hours and then recovered for 8 hours in complete media (Media), Steen, or Steen followed by complete media (Steen/Media). Oxidative stress, chemokines, permeability, interendothelial junction proteins, and toll-like receptor 4-mediated pathways were assessed in pulmonary microvascular endothelial cells using standard methods. RESULTS Lipopolysaccharide treatment of pulmonary microvascular endothelial cells and recovery in Media significantly induced reactive oxygen species, lipid peroxidation, expression of chemokines (eg, chemokine [C-X-C motif] ligand 1 and C-C motif chemokine ligand 2) and cell adhesion molecules (P-selectin, E-selectin, and vascular cell adhesion molecule 1), permeability, neutrophil transmigration, p38 mitogen-activated protein kinase and nuclear factor kappa B signaling, and decreased expression of tight and adherens junction proteins (zonula occludens-1, zonula occludens-2, and vascular endothelial-cadherin). All of these inflammatory pathways were significantly attenuated after recovery of pulmonary microvascular endothelial cells in Steen or Steen/Media. CONCLUSIONS Steen solution preserves pulmonary endothelial barrier function after lipopolysaccharide exposure by promoting an anti-inflammatory environment via attenuation of oxidative stress, toll-like receptor 4-mediated signaling, and conservation of interendothelial junctions. These protective mechanisms offer insight into the advancement of methods for in vivo lung perfusion with Steen for the treatment of severe acute respiratory distress syndrome.
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Affiliation(s)
| | | | | | | | - Victor E. Laubach
- Address for reprints: Victor E. Laubach, PhD, Department of Surgery, University of Virginia School of Medicine, PO Box 801359, Charlottesville, VA 22908
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A review of treatments for non-compressible torso hemorrhage (NCTH) and internal bleeding. Biomaterials 2022; 283:121432. [DOI: 10.1016/j.biomaterials.2022.121432] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 01/26/2022] [Accepted: 02/17/2022] [Indexed: 12/12/2022]
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Choi SU, Rho JH, Choi YJ, Jun SW, Shin YJ, Lee YS, Shin HJ, Lim CH, Shin HW, Kim JH, Lee HW, Lim HJ. Postoperative hypoalbuminemia is an independent predictor of 1-year mortality after surgery for geriatric intertrochanteric femoral fracture: A retrospective cohort study. Medicine (Baltimore) 2021; 100:e28306. [PMID: 34941120 PMCID: PMC8701452 DOI: 10.1097/md.0000000000028306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 11/26/2021] [Indexed: 01/05/2023] Open
Abstract
Preoperative hypoalbuminemia from malnutrition is associated with increased morbidity and mortality after geriatric hip fracture surgery. However, little is known regarding the correlation between postoperative hypoalbuminemia and mortality. This study aimed to evaluate whether postoperative hypoalbuminemia could predict 1-year mortality after intertrochanteric femoral fracture surgery in elderly patients.The medical records of 263 geriatric patients (age ≥65 years) who underwent intertrochanteric femoral fracture surgery between January 2013 and January 2016 in a single hospital were reviewed retrospectively. The patients were allocated to 2 groups based on lowest serum albumin levels within 2 postoperative days (≥3.0 g/dL [group 1, n = 46] and <3.0 g/dL [group 2, n = 217]. Data between the non-survival and survival groups were compared. Multivariable logistic regression analysis was conducted to identify the independent predictor for 1-year mortality.The 1-year mortality rate was 16.3% after intertrochanteric femoral fracture surgery. Multivariable logistic regression analysis revealed that postoperative hypoalbuminemia was significantly associated with 1-year mortality (adjusted odds ratio, 8.03; 95% confidence interval, 1.37-47.09; P = .021). The non-survival group showed a significantly increased incidence of postoperative hypoalbuminemia (95.4% vs 80.0%, P = .015) and intensive care unit admission (11.6% vs 2.7%, P = .020), older age (82.5 ± 5.8 years vs 80.0 ± 7.2 years, P = .032), lower body mass index (20.1 ± 3.2 kg/m2 vs 22.4 ± 3.8 kg/m2, P < .001), and increased amount of transfusion of perioperative red blood cells (1.79 ± 1.47 units vs 1.43 ± 2.08 units, P = .032), compared to the survival group.This study demonstrated that postoperative hypoalbuminemia is a potent predictor of 1-year mortality in geriatric patients undergoing intertrochanteric femoral fracture surgery. Therefore, exogenous albumin administration can be considered to improve postoperative outcomes and reduce the risk of mortality after surgery for geriatric hip fracture.
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Affiliation(s)
- Sung Uk Choi
- Department of Anesthesiology and Pain Medicine, Anam Hospital, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Jeong Ho Rho
- Department of Anesthesiology and Pain Medicine, Okcheon St. Mary’ Hospital, Chungcheongbuk-do, Republic of Korea
| | - Yoon Ji Choi
- Department of Anesthesiology and Pain Medicine, Ansan Hospital, College of Medicine, Korea University, Ansan, Republic of Korea
| | - Seung Woo Jun
- Department of Anesthesiology and Pain Medicine, Anam Hospital, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Young Jae Shin
- Department of Anesthesiology and Pain Medicine, Anam Hospital, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Yoon Sook Lee
- Department of Anesthesiology and Pain Medicine, Ansan Hospital, College of Medicine, Korea University, Ansan, Republic of Korea
| | - Hyeon Ju Shin
- Department of Anesthesiology and Pain Medicine, Anam Hospital, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Choon Hak Lim
- Department of Anesthesiology and Pain Medicine, Anam Hospital, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Hye Won Shin
- Department of Anesthesiology and Pain Medicine, Anam Hospital, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Jae Hwan Kim
- Department of Anesthesiology and Pain Medicine, Ansan Hospital, College of Medicine, Korea University, Ansan, Republic of Korea
| | - Hye Won Lee
- Department of Anesthesiology and Pain Medicine, Anam Hospital, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Hye Ja Lim
- Department of Anesthesiology and Pain Medicine, Anam Hospital, College of Medicine, Korea University, Seoul, Republic of Korea
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Abstract
Background: Fibrinogen is a substrate for blood clots formation. In cardiac surgery, a number of different mechanisms lead to a decrease in fibrinogen levels and consequent impaired haemostasis. Patients undergoing cardiac surgery are therefore frequently exposed to blood loss and allogeneic blood transfusion, which are risk factors associated with morbidity and mortality. Thus, particular efforts in fibrinogen management should be made to decrease bleeding and the need for blood transfusion. Therefore, fibrinogen remains an active focus of investigations from basic science to clinical practice. This review aims to summarise the latest evidence regarding the role of fibrinogen and current practices in fibrinogen management in adult cardiac surgery. Methods: The PubMed database was systematically searched for literature investigating the role and disorders of fibrinogen in cardiac surgery and diagnostic and therapeutic procedures related to fibrinogen deficiency aimed at reducing blood loss and transfusion requirements. Clinical trials and reviews from the last 10 years were included. Results: In total, 146 articles were analysed. Conclusion: The early diagnosis and treatment of fibrinogen deficiency is crucial in maintaining haemostasis in bleeding patients. Further studies are needed to better understand the association between fibrinogen levels, bleeding, and fibrinogen supplementation and their impacts on patient outcomes in different clinical settings.
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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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Crabtree NE, Epstein KL. Current Concepts in Fluid Therapy in Horses. Front Vet Sci 2021; 8:648774. [PMID: 33855057 PMCID: PMC8039297 DOI: 10.3389/fvets.2021.648774] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Accepted: 03/03/2021] [Indexed: 11/13/2022] Open
Abstract
Despite the frequent inclusion of fluid therapy in the treatment of many conditions in horses, there are limited studies available to provide evidenced-based, species-specific recommendations. Thus, equine fluid therapy is based on the application of physiology and extrapolation from evidence in other veterinary species and human medicine. The physiologic principles that underly the use of fluids in medicine are, at first glance, straightforward and simple to understand. However, in the past 20 years, multiple studies in human medicine have shown that creating recommendations based on theory in combination with experimental and/or small clinical studies does not consistently result in best practice. As a result, there are ongoing controversies in human medicine over fluid types, volumes, and routes of administration. For example, the use of 0.9% NaCl as the replacement fluid of choice is being questioned, and the theoretical benefits of colloids have not translated to clinical cases and negative effects are greater than predicted. In this review, the current body of equine research in fluid therapy will be reviewed, connections to the controversies in human medicine and other veterinary species will be explored and, where appropriate, recommendations for fluid therapy in the adult horse will be made based on the available evidence. This review is focused on the decisions surrounding developing a fluid plan involving crystalloids, synthetic colloids, and plasma.
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Affiliation(s)
- Naomi E Crabtree
- Department of Large Animal Medicine, University of Georgia College of Veterinary Medicine, Athens, GA, United States
| | - Kira L Epstein
- Department of Large Animal Medicine, University of Georgia College of Veterinary Medicine, Athens, GA, United States
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van Galen G, Hallowell G. Hydroxyethyl starches in equine medicine. J Vet Emerg Crit Care (San Antonio) 2019; 29:349-359. [PMID: 31228334 DOI: 10.1111/vec.12854] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 06/11/2017] [Accepted: 07/24/2017] [Indexed: 12/12/2022]
Abstract
OBJECTIVE To review and discuss the use of hydroxyethyl starches (HES) in equine veterinary medicine, and to provide recommendations for its use. DATA SOURCES Veterinary and human peer-reviewed medical literature including scientific reviews, meta-analyses, and original research articles. HUMAN DATA SYNTHESIS Increasing evidences on adverse effects after HES use and decreasing support for beneficial effects with regards to volume expansion and colloid osmotic pressure (COP) support in critically ill subjects have led to a recent guideline to limit the use of HES in critically ill people. EQUINE VETERINARY DATA SYNTHESIS The rationale for HES use in horses is mainly extrapolated from human medicine, and very limited studies in horses are available. There is limited evidence suggesting a superiority of volume expansion effects of HES over crystalloids. The potential for HES to increase and maintain COP is well supported, but there is no evidence that maintaining or increasing plasma COP influences outcome, tissue edema formation, or rates of complications that potentially relate to edema formation. HES induce dose-dependent changes in coagulopathic parameters, but there is no evidence that HES causes clinical coagulopathies. Insufficient data are available on other adverse effects such as acute kidney injury, or mortality in horses. The use of HES should be restricted in septic patients, but may still have some use in cases of hemorrhagic shock resuscitation, hypoalbuminemia, or perioperative fluid replacement. CONCLUSION The evidence supporting the use of HES in horses is weak due to lack of species-specific investigations. Acknowledging species differences, the use of HES should be judicious, yet with some recognition of its benefits in particular cases. More research is necessary to improve knowledge on use of HES in horses and to establish better future recommendations.
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Affiliation(s)
- Gaby van Galen
- Medicine and Surgery, Department of Large Animal Science, University of Copenhagen, Copenhagen, Denmark
| | - Gayle Hallowell
- School of Veterinary Medicine and Surgery, University of Nottingham, Nottingham, UK
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Impact of Different Clinical Perfusates During Normothermic Ex Situ Liver Perfusion on Pig Liver Transplant Outcomes in a DCD Model. Transplant Direct 2019; 5:e437. [PMID: 30993191 PMCID: PMC6445654 DOI: 10.1097/txd.0000000000000876] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 01/09/2019] [Indexed: 11/26/2022] Open
Abstract
Supplemental digital content is available in the text. Background Human albumin/dextran (HA-D), bovine-gelatin (BG), and packed red blood cells plus plasma have been used in European and North-American clinical trials of normothermic ex situ liver perfusion (NEsLP). We compared the effects of these perfusates in a porcine model during NEsLP and after transplantation. Methods Porcine livers were retrieved 30 minutes after circulatory death. After 5 hours of NEsLP, grafts were transplanted. Three groups (n = 6) were assessed (HA-D vs BG vs whole blood [WB]). One group of static cold storage (SCS) was evaluated for comparison with the perfusion groups. Hemodynamic variables, liver and endothelial injury, and function were assessed during NEsLP and posttransplantation. Results Hepatic artery flow was higher since the beginning of NEsLP in the HA-D group (HA-D, 238 ± 90 mL/min vs BG, 97 ± 33 mL/min vs WB, 148 ± 49 mL/min; P = 0.01). Hyaluronic acid was lower in the HA-D at the end of perfusion (HA-D, 16.28 ± 7.59 ng/μL vs BG, 76.05 ± 15.30 ng/μL vs WB, 114 ± 46 ng/μL; P < 0.001). After transplant, aspartate aminotransferase was decreased in the HA-D group when compared with the rest of the groups (HA-D, 444 ± 226 IU/L vs BG, 1033 ± 694 IU/L vs WB, 616 ± 444 IU/L vs SCS, 2235 ± 1878 IU/L). At 5 hours after transplant, lactate was lower in the HA-D group (HA-D, 3.88 ± 1.49 mmol/L vs BG, 7.79 ± 2.68 mmol/L vs WB, 8.16 ± 3.86 mmol/L vs SCS, 9.06 ± 3.54 mmol/L; P = 0.04). International Normalized Ratio was improved in HA-D group compared to the rest of the groups (HA-D, 1.23 ± 0.30 vs BG, 1.63 ± 0.20 vs WB, 1.50 ± 0.31 vs SCS, 1.97 ± 1.55; P = 0.03) after transplantation. In contrast, BG displayed lower aspartate aminotransferase levels during NEsLP (HA-D, 183 ± 53 IU/L vs BG, 142 ± 52 IU/L vs WB, 285 ± 74 IU/L; P = 0.01) and less cleaved-caspase-3 staining (HA-D, 2.05 ± 0.73% vs BG, 0.95 ± 1.14% vs WB, 1.74 ± 0.54% vs SCS, 7.95 ± 2.38%) compared with the other groups. On the other hand, the bile from the WB showed higher pH (HA-D, 7.54 ± 0.11 vs BG, 7.34 ± 0.37 vs WB, 7.59 ± 0.18) and lower glucose levels (HA-D, 0.38 ± 0.75 mmol/L vs BG, 1.42 ± 1.75 mmol/L vs WB, 0 ± 0 mmol/L) by the end of perfusion. Conclusions Overall HA-D displayed more physiologic conditions during NEsLP that were reflected in less graft injury and improved liver function and survival after transplantation. Optimization of the perfusates based on the beneficial effects found with these different solutions would potentially improve further the outcomes through the use of NEsLP in marginal grafts.
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The effects of Plasma-Lyte 148 solution on blood coagulation: an in-vitro, volunteer study using rotational thromboelastometry. Blood Coagul Fibrinolysis 2018; 29:446-450. [PMID: 29846277 PMCID: PMC6085130 DOI: 10.1097/mbc.0000000000000741] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The current study aimed to measure the effects of Plasma-Lyte 148 solution on the blood coagulation profile according to the hemodilution level using rotational thromboelastometry (ROTEM) tests. Venous blood was collected from 12 healthy volunteers and divided into four specimen bottles, which were diluted at different levels with Plasma-Lyte 148 (0, 20, 40, and 60%). Following this, ROTEM tests were performed on the study samples. We found that as the hemodilution level increased, the ROTEM values showed a hypocoagulable pattern. The change rate of the maximum clot firmness (MCF) of INTEM was greater in the 40 (P = 0.015) and 60% (P < 0.001) dilutions than it was in the 20% dilution. Greater lengthening of the clot formation time of EXTEM was observed in the 60% dilution than it was in the 20% dilution (P < 0.001). The alpha-angle of EXTEM showed a greater decrease in the 60% dilution than it did in the 20% dilution (P < 0.001). A larger change rate of the MCF of EXTEM was observed in the 40 (P = 0.003) and 60% (P < 0.001) dilutions than it was in the 20% dilution. A greater decrease in the MCF of FIBTEM was identified in the 40 (P = 0.009) and 60% (P < 0.001) dilutions than in the 20% dilution. All coagulation pathways exhibited hypocoagulable patterns as the hemodilution level increased. However, most of the mean values of ROTEM parameters were within the normal reference range, except for those of the 60% dilution.
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Fahlbusch FB, Heinlein T, Rauh M, Dittrich S, Cesnjevar R, Moosmann J, Nadal J, Schmid M, Muench F, Schroth M, Rascher W, Topf HG. Influence of factor XIII activity on post-operative transfusion in congenital cardiac surgery-A retrospective analysis. PLoS One 2018; 13:e0199240. [PMID: 29990321 PMCID: PMC6038983 DOI: 10.1371/journal.pone.0199240] [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: 12/01/2017] [Accepted: 04/25/2018] [Indexed: 12/16/2022] Open
Abstract
Objectives Coagulation factor XIII (FXIII) plays a key role in fibrin clot stabilization—an essential process for wound healing following cardiothoracic surgery. However, FXIII deficiency as a risk for post-operative bleeding in pediatric cardiac surgery involving cardiopulmonary bypass (CPB) for congenital heart disease (CHD) is controversially discussed. Thus, as primary outcome measures, we analyzed the association of pre-operative FXIII activity and post-operative chest tube drainage (CTD) loss with transfusion requirements post-operatively. Secondary outcomes included the influence of cyanosis and sex on transfusion. Methods Our retrospective analysis (2009–2010) encompassed a single center series of 76 cardio-surgical cases with CPB (0–17 years, mean age 5.61 years) that were post-operatively admitted to our pediatric intensive care unit (PICU). The observational period was 48 hours after cardiac surgery. Blood cell counts and coagulation status, including FXIII activity were routinely performed pre- and post-operatively. The administered amount of blood products and volume expanders was recorded electronically, along with the amount of CTD loss. Uni- and multivariate logistic regression analysis was performed to calculate the associations (odds ratios) of variables with post-operative transfusion needs. Results FXIII activities remained stable following CPB surgery. There was no association of pre- and post-operative FXIII activities and transfusion of blood products or volume expanders in the first 48 hours after surgery. Similarly, FXIII showed no association with CTD loss. Cyanosis and female sex were associated with transfusion rates. Conclusions Although essentially involved in wound healing and clotting after surgery, FXIII activity does not serve as a valid predictor of post-operative transfusion need.
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Affiliation(s)
- Fabian B Fahlbusch
- Department of Pediatrics and Adolescent Medicine, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Thomas Heinlein
- Department of Pediatrics and Adolescent Medicine, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Manfred Rauh
- Department of Pediatrics and Adolescent Medicine, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Sven Dittrich
- Department of Pediatric Cardiology, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Robert Cesnjevar
- Department of Pediatric Cardiac Surgery, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Julia Moosmann
- Department of Pediatric Cardiology, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Jennifer Nadal
- Institute of Medical Biometry, Informatics and Epidemiology (IMBIE), University Hospital, Bonn, Germany
| | - Matthias Schmid
- Institute of Medical Biometry, Informatics and Epidemiology (IMBIE), University Hospital, Bonn, Germany
| | - Frank Muench
- Department of Pediatric Cardiac Surgery, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Michael Schroth
- Cnopf'sche Kinderklinik, Diakonie Neuendettelsau, Nürnberg, Germany
| | - Wolfgang Rascher
- Department of Pediatrics and Adolescent Medicine, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Hans-Georg Topf
- Department of Pediatrics and Adolescent Medicine, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
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Jin S, Yu G, Hou R, Shen B, Jiang H. Effect of Hemodilution In Vitro with Hydroxyethyl Starch on Hemostasis. Med Sci Monit 2017; 23:2189-2197. [PMID: 28481865 PMCID: PMC5436429 DOI: 10.12659/msm.901588] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Background Hydroxyethyl starch (HES) solutions are used for volume expansion during surgery. We aimed to investigate how 6%HES 130/0.4 affects hemostasis. Material/Methods Blood samples were collected from 12 healthy adult volunteers, diluting with 6%HES 130/0.4 (HES group) or Ringer lactate solution (RL control group). The hemodilution ratio (HR) of citrated blood volume to plasma substitute volume was 10: 0 (undiluted), 10: 2, 10: 4, and 10: 6. Clotting factors activity was measured. Thrombin generation was monitored. Platelet function was analyzed. Results 1) Activity of coagulation factor was decreased with increasing HR compared to undiluted baseline, and the activity of FVIII was significantly decreased in HES vs. RL. 2) Calibrated automated thrombography (CAT) results showed HES extended lag time, time to peak (ttpeak), start tail, and decreased peak of thrombin generation. Although lag time and ttpeak were significantly prolonged in HES vs. RL, endogenous thrombin potential (ETP) did not change. 3) Flow cytometric (FCM) analysis showed that HES reduced platelet phospholipids serine (PS) vs. baseline and RL. 4) HES significantly decreased antithrombin activity (AT: A) of the anticoagulant system with increasing HR vs. baseline and RL. 5) For fibrinolytic system, HES did not affect fibrinogen degradation products (FDP) and D-dimers (D-D) vs. baseline, or α2-antiplasmin (α2-AP) vs. RL. Conclusions By reducing FVIII activity and platelet PS expression, HES interfered with PS combining to FXIa, FVIIIa, and FVa, which affected the acceleration and explosion stage of thrombin. The decreased velocity and peak of thrombin generation delays and reduces clot formation. Combined 6%HES 130/0.4 decreased anticoagulant activity and may have clinical utility.
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Affiliation(s)
- Shanliang Jin
- Department of Anesthesiology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China (mainland)
| | - Guifang Yu
- Department of Anesthesiology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China (mainland)
| | - Ruijiao Hou
- Department of Anesthesiology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China (mainland)
| | - Boxiong Shen
- Department of Anesthesiology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China (mainland)
| | - Hong Jiang
- Department of Anesthesiology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China (mainland)
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Singh A, Ali S, Shetty R. Effectiveness and Safety of Polygeline in Patients with Hypovolemia due to Trauma. J Emerg Trauma Shock 2017; 10:116-120. [PMID: 28855773 PMCID: PMC5566017 DOI: 10.4103/jets.jets_120_16] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Background: This retrospective study examined the effectiveness and safety of polygeline in adult patients with hypovolemia due to traumatic injury. Materials and Methods: Polygeline was administered after evaluating the amount of blood loss and estimating hematological and biochemical parameters. Changes in vital signs, serum electrolytes, arterial pH, and serum lactate were evaluated. The safety was evaluated by recording the adverse events if any. Results: Sixty patients with the mean age 37.5 ± 11.26 years were included in the study. All patients had blood loss < 20%. The mean total polygeline administered was 1025.0 ± 464.18 ml. Blood transfusion was required in 3.33% of patients. Diastolic, systolic, and mean arterial blood pressure and pulse rate significantly increased after 1 h of polygeline administration (P < 0.0001). There was a trend toward increase in urine output (P = 0.0715) after 1 h. The improvement in vital parameters was consistent at 6, 14, and 18 h after administration of polygeline. Arterial pH significantly increased from 7.2 ± 0.12 to 7.3 ± 0.11 after 1 h of administration (P < 0.0001) and was consistent till 24 h (P = 0.035). Blood lactate decreased after 1 h (P < 0.0001). Changes in laboratory parameters were not clinically significant. After mean duration hospital stay of 10.5 ± 4.63 days all patients were discharged without any clinically significant abnormality or adverse event. Conclusion: Polygeline improved hemodynamic stability in patients with hypovolemia due to traumatic injury. The improvement was seen within 1 h (golden hour) of polygeline administration and maintained consistently. Polygeline can be safely administered to patients with traumatic injury to improve hemodynamic parameters and achieve stability.
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Affiliation(s)
- Ajai Singh
- Department of Orthopedic Surgery, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Sabir Ali
- Department of Orthopedic Surgery, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Rohita Shetty
- Acute Care Division, Abbott Healthcare Pvt Ltd, Mumbai, Maharashtra, India
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16
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Epstein KL, Bergren A, Nie B, Arnold RD, Brainard BM. Comparison of the pharmacokinetics of two formulations of hydroxyethyl starch in healthy horses. J Vet Pharmacol Ther 2016; 40:309-313. [DOI: 10.1111/jvp.12359] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 08/05/2016] [Indexed: 11/28/2022]
Affiliation(s)
- K. L. Epstein
- Department of Large Animal Medicine; College of Veterinary Medicine; University of Georgia; Athens GA USA
| | - A. Bergren
- Department of Clinical Studies; Cummings School of Veterinary Medicine; Tufts University; Grafton MA USA
| | - B. Nie
- Department of Drug Discovery and Development; Harrison School of Pharmacy; Auburn University; Auburn AL USA
| | - R. D. Arnold
- Department of Drug Discovery and Development; Harrison School of Pharmacy; Auburn University; Auburn AL USA
- Department of Small Animal Medicine and Surgery; College of Veterinary Medicine; University of Georgia; Athens GA USA
| | - B. M. Brainard
- Department of Small Animal Medicine and Surgery; College of Veterinary Medicine; University of Georgia; Athens GA USA
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Schol PBB, Terink IM, Lancé MD, Scheepers HCJ. Liberal or restrictive fluid management during elective surgery: a systematic review and meta-analysis. J Clin Anesth 2016; 35:26-39. [PMID: 27871539 DOI: 10.1016/j.jclinane.2016.07.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Revised: 06/20/2016] [Accepted: 07/05/2016] [Indexed: 10/21/2022]
Abstract
This article reviews if a restrictive fluid management policy reduces the complication rate if compared to liberal fluid management policy during elective surgery. The PubMed database was explored by 2 independent researchers. We used the following search terms: "Blood transfusion (MESH); transfusion need; fluid therapy (MESH); permissive hypotension; fluid management; resuscitation; restrictive fluid management; liberal fluid management; elective surgery; damage control resuscitation; surgical procedures, operative (MESH); wounds (MESH); injuries (MESH); surgery; trauma patients." A secondary search in the Medline, EMBASE, Web of Science, and Cochrane library revealed no additional results. We selected randomized controlled trials performed during elective surgeries. Patients were randomly assigned to a restrictive fluid management policy or to a liberal fluid management policy during elective surgery. The patient characteristics and the type of surgery varied. All but 3 studies reported American Society of Anaesthesiologists groups 1 to 3 as the inclusion criterion. The primary outcome of interest is total number of patients with a complication and the complication rate. Secondary outcome measures are infection rate, transfusion need, postoperative rebleeding, hospital stay, and renal function. In total, 1397 patients were analyzed (693 restrictive protocol, 704 liberal protocol). Meta-analysis showed that in the restrictive group as compared with the liberal group, fewer patients experienced a complication (relative risk [RR], 0.65; 95% confidence interval [CI], 0.55-0.78). The total complication rate (RR, 0.57; 95% CI, 0.52-0.64), risk of infection (RR, 0.62; 95% CI, 0.48-0.79), and transfusion rate (RR, 0.81; 95% CI, 0.66-0.99) were also lower. The postoperative rebleeding did not differ in both groups: RR, 0.76 (95% CI, 0.28-2.06). We conclude that compared with a liberal fluid policy, a restrictive fluid policy in elective surgery results in a 35% reduction in patients with a complication and should be advised as the preferred fluid management policy.
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Affiliation(s)
- Pim B B Schol
- Department of Obstetrics and Gynaecology, Maastricht University Medical Centre, PO 5800, 6202 AZ, Maastricht, The Netherlands.
| | - Ivon M Terink
- Maastricht University, PO 616, 6200 MD Maastricht, The Netherlands.
| | - Marcus D Lancé
- Department of Anaesthesia and Pain Treatment, Maastricht University Medical Centre, PO 5800, 6202 AZ, Maastricht, The Netherlands.
| | - Hubertina C J Scheepers
- Department of Obstetrics and Gynaecology, Maastricht University Medical Centre, PO 5800, 6202 AZ, Maastricht, The Netherlands.
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Reddy S, McGuinness S, Parke R, Young P. Choice of Fluid Therapy and Bleeding Risk After Cardiac Surgery. J Cardiothorac Vasc Anesth 2016; 30:1094-103. [DOI: 10.1053/j.jvca.2015.12.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Indexed: 02/07/2023]
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Lagny MG, Roediger L, Koch JN, Dubois F, Senard M, Donneau AF, Hubert MB, Hans GA. Hydroxyethyl Starch 130/0.4 and the Risk of Acute Kidney Injury After Cardiopulmonary Bypass: A Single-Center Retrospective Study. J Cardiothorac Vasc Anesth 2016; 30:869-75. [DOI: 10.1053/j.jvca.2015.10.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Indexed: 11/11/2022]
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Adamik KN, Yozova ID, Regenscheit N. Controversies in the use of hydroxyethyl starch solutions in small animal emergency and critical care. J Vet Emerg Crit Care (San Antonio) 2016; 25:20-47. [PMID: 25655725 DOI: 10.1111/vec.12283] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 08/14/2014] [Indexed: 01/22/2023]
Abstract
OBJECTIVES To (1) review the development and medical applications of hydroxyethyl starch (HES) solutions with particular emphasis on its physiochemical properties; (2) critically appraise the available evidence in human and veterinary medicine, and (3) evaluate the potential risks and benefits associated with their use in critically ill small animals. DATA SOURCES Human and veterinary original research articles, scientific reviews, and textbook sources from 1950 to the present. HUMAN DATA SYNTHESIS HES solutions have been used extensively in people for over 30 years and ever since its introduction there has been a great deal of debate over its safety and efficacy. Recently, results of seminal trials and meta-analyses showing increased risks related to kidney dysfunction and mortality in septic and critically ill patients, have led to the restriction of HES use in these patient populations by European regulatory authorities. Although the initial ban on the use of HES in Europe has been eased, proof regarding the benefits and safety profile of HES in trauma and surgical patient populations has been requested by these same European regulatory authorities. VETERINARY DATA SYNTHESIS The veterinary literature is limited mostly to experimental studies and clinical investigations with small populations of patients with short-term end points and there is insufficient evidence to generate recommendations. CONCLUSIONS Currently, there are no consensus recommendations regarding the use of HES in veterinary medicine. Veterinarians and institutions affected by the HES restrictions have had to critically reassess the risks and benefits related to HES usage based on the available information and sometimes adapt their procedures and policies based on their reassessment. Meanwhile, large, prospective, randomized veterinary studies evaluating HES use are needed to achieve relevant levels of evidence to enable formulation of specific veterinary guidelines.
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Affiliation(s)
- Katja N Adamik
- Department of Veterinary Clinical Medicine, Division of Small Animal Emergency and Critical Care, Vetsuisse Faculty, University of Bern, Bern, Switzerland
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21
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Lidbury JA, Cook AK, Steiner JM. Hepatic encephalopathy in dogs and cats. J Vet Emerg Crit Care (San Antonio) 2016; 26:471-87. [PMID: 27060899 DOI: 10.1111/vec.12473] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 11/04/2014] [Accepted: 11/07/2014] [Indexed: 12/29/2022]
Abstract
OBJECTIVE To comparatively review the pathogenesis, clinical presentation, diagnosis, and management of hepatic encephalopathy (HE) in dogs and cats. DATA SOURCES The Medline database was searched for articles related to HE in people, dogs, and cats. Articles published within the last 5 years were given special importance. HUMAN DATA SYNTHESIS The pathogenesis of HE is complex and incompletely understood, but ammonia appears to play a central role. Hyperammonemia leads to accumulation of glutamine in astrocytes, with subsequent astrocyte swelling and neurological dysfunction. The development of HE in patients with hepatic cirrhosis is a poor prognostic indicator. The fermentable disaccharide lactulose and the antimicrobial rifaximin are US Food and Drug Administration approved treatments for human HE. Severe protein restriction is no longer recommended for patients with this condition. VETERINARY DATA SYNTHESIS HE is often associated with portosystemic shunting in dogs and cats. Ammonia plays a central role in the pathogenesis of HE in dogs and cats, but other factors such as manganese and endogenous benzodiazepines may also contribute. Recently, a soy protein-based diet was found to be beneficial in treating canine HE. Severe dietary protein restriction is likely to be detrimental in affected animals. There have been no clinical trials of drugs routinely used in the management HE in veterinary medicine, but lactulose and antimicrobials such as metronidazole are well-established treatments. CONCLUSIONS HE is a potentially life-threatening condition that is probably underdiagnosed in companion animals. Although various treatment recommendations have been proposed, there is a lack of evidence in the veterinary literature regarding optimal strategies for the management of this condition. As our understanding of the pathogenesis of HE in dogs and cats evolves, novel diagnostic tests and therapeutic agents may become available.
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Affiliation(s)
- Jonathan A Lidbury
- Department of Veterinary Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, 77843
| | - Audrey K Cook
- Department of Veterinary Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, 77843
| | - Jörg M Steiner
- Department of Veterinary Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, 77843
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Wurlod VA, Howard J, Francey T, Schweighauser A, Adamik KN. Comparison of the in vitro effects of saline, hypertonic hydroxyethyl starch, hypertonic saline, and two forms of hydroxyethyl starch on whole blood coagulation and platelet function in dogs. J Vet Emerg Crit Care (San Antonio) 2015; 25:474-87. [PMID: 26037241 DOI: 10.1111/vec.12320] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Accepted: 11/22/2013] [Indexed: 01/24/2023]
Abstract
OBJECTIVE To compare the in vitro effects of hypertonic solutions and colloids to saline on coagulation in dogs. DESIGN In vitro experimental study. SETTING Veterinary teaching hospital. ANIMALS Twenty-one adult dogs. INTERVENTIONS Blood samples were diluted with saline, 7.2% hypertonic saline solution with 6% hydroxyethylstarch with an average molecular weight of 200 kDa and a molar substitution of 0.4 (HH), 7.2% hypertonic saline (HTS), hydroxyethyl starch (HES) 130/0.4 or hydroxyethyl starch 600/0.75 at ratios of 1:22 and 1:9, and with saline and HES at a ratio of 1:3. MEASUREMENTS AND MAIN RESULTS Whole blood coagulation was analyzed using rotational thromboelastometry (extrinsic thromboelastometry-cloting time (ExTEM-CT), maximal clot firmness (MCF) and clot formation time (CFT) and fibrinogen function TEM-CT (FibTEM-CT) and MCF) and platelet function was analyzed using a platelet function analyzer (closure time, CTPFA ). All parameters measured were impaired by saline dilution. The CTPFA was prolonged by 7.2% hypertonic saline solution with 6% hydroxyethylstarch with an average molecular weight of 200 kDa and a molar substitution of 0.4 (HH) and HTS but not by HES solutions. At clinical dilutions equivalent to those generally administered for shock (saline 1:3, HES 1:9, and hypertonic solutions 1:22), CTPFA was more prolonged by HH and HTS than other solutions but more by saline than HES. No difference was found between the HES solutions or the hypertonic solutions. ExTEM-CFT and MCF were impaired by HH and HTS but only mildly by HES solutions. At clinically relevant dilutions, no difference was found in ExTEM-CFT between HTS and saline or in ExTEM-MCF between HH and saline. No consistent difference was found between the 2 HES solutions but HH impaired ExTEM-CFT and MCF more than HTS. At high dilutions, FibTEM-CT and -MCF and ExTEM-CT were impaired by HES. CONCLUSIONS Hypertonic solutions affect platelet function and whole blood coagulation to a greater extent than saline and HES. At clinically relevant dilutions, only CTPFA was markedly more affected by hypertonic solutions than by saline. At high dilutions, HES significantly affects coagulation but to no greater extent than saline at clinically relevant dilutions.
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Affiliation(s)
- Virginie A Wurlod
- Division of Small Animal Emergency and Critical Care, Department of Veterinary Clinical Medicine, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Judith Howard
- the Diagnostic Laboratory, Department of Veterinary Clinical Medicine, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Thierry Francey
- Small Animal Internal Medicine, Department of Veterinary Clinical Medicine, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Ariane Schweighauser
- Small Animal Internal Medicine, Department of Veterinary Clinical Medicine, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Katja N Adamik
- Division of Small Animal Emergency and Critical Care, Department of Veterinary Clinical Medicine, Vetsuisse Faculty, University of Bern, Bern, Switzerland
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Cook FAB, Connelly CL, Clark M. Starch and haemostasis. Anaesthesia 2015; 70:761-2. [PMID: 25959194 DOI: 10.1111/anae.13091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- F A B Cook
- Victoria Kirkcaldy Hospital, Fife, Scotland.
| | | | - M Clark
- Victoria Kirkcaldy Hospital, Fife, Scotland
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Van der Linden P, Dumoulin M, Van Lerberghe C, Torres CS, Willems A, Faraoni D. Efficacy and safety of 6% hydroxyethyl starch 130/0.4 (Voluven) for perioperative volume replacement in children undergoing cardiac surgery: a propensity-matched analysis. Crit Care 2015; 19:87. [PMID: 25886765 PMCID: PMC4376346 DOI: 10.1186/s13054-015-0830-z] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Accepted: 02/20/2015] [Indexed: 11/10/2022] Open
Abstract
INTRODUCTION Six percent hydroxyethyl starch (HES) 130/0.4 is considered an alternative to human albumin (HA) and crystalloids for volume replacement in children undergoing cardiac surgery. In this large propensity-matched analysis, we aimed to assess the efficacy and safety of replacing HA with HES for intraoperative volume therapy in children undergoing cardiac surgery with cardiopulmonary bypass (CPB). METHODS We retrospectively reviewed our database, including children who underwent cardiac surgery between January 2002 and December 2010. Four percent HA was used until 2005; it was replaced by HES thereafter. Demographic data, intra- and postoperative blood loss and blood component transfusions were recorded, together with the incidence of postoperative complications and mortality. We performed a propensity-matched analysis using 13 possible confounding factors to compare children who received either HES or HA intraoperatively. The primary objectives included the effects of both fluids on intraoperative fluid balance (difference between fluids in and fluids out (efficacy)) and blood loss and exposure to allogeneic blood products (safety). Secondary safety outcomes were mortality and the incidence of postoperative renal dysfunction. RESULTS Of 1,832 children reviewed, 1,495 were included in the analysis. Intraoperative use of HES was associated with a less positive fluid balance. Perioperative blood loss, volume of red blood cells and fresh frozen plasma administered, as well as the number of children who received transfusions, were also significantly lower in the HES group. No difference was observed regarding the incidence of postoperative renal failure requiring renal replacement therapy or of morbidity and mortality. CONCLUSIONS These results confirm that the use of HES for volume replacement in children during cardiac surgery with CPB is as safe as HA. In addition, its use might be associated with less fluid accumulation. Further large studies are needed to assess whether the reduction in fluid accumulation could have a significant impact on postoperative morbidity and mortality.
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Affiliation(s)
- Philippe Van der Linden
- Department of Anesthesiology, University Hospital Brugmann and Queen Fabiola Children's University Hospital, Free University of Brussels, 4 Place Van Gehuchten, B-1020, Brussels, Belgium.
| | - Melanie Dumoulin
- Department of Anesthesiology, University Hospital Brugmann and Queen Fabiola Children's University Hospital, Free University of Brussels, 4 Place Van Gehuchten, B-1020, Brussels, Belgium.
| | - Celine Van Lerberghe
- Department of Anesthesiology, University Hospital Brugmann and Queen Fabiola Children's University Hospital, Free University of Brussels, 4 Place Van Gehuchten, B-1020, Brussels, Belgium.
| | - Cristel Sanchez Torres
- Department of Anesthesiology, University Hospital Brugmann and Queen Fabiola Children's University Hospital, Free University of Brussels, 4 Place Van Gehuchten, B-1020, Brussels, Belgium.
| | - Ariane Willems
- Pediatric Intensive Care Unit, Queen Fabiola Children's University Hospital, Free University of Brussels, 15 Avenue JJ Crocq, B-1020, Brussels, Belgium.
| | - David Faraoni
- Department of Anesthesiology, Perioperative and Pain Medicine, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA.
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Reich-Slotky R, Bachegowda LS, Ancharski M, Mendeleyeva L, Rubinstein P, Rennert H, Shore T, van Besien K, Cushing M. How we handled the dextran shortage: an alternative washing or dilution solution for cord blood infusions. Transfusion 2015; 55:1147-53. [DOI: 10.1111/trf.13015] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 12/02/2014] [Accepted: 12/02/2014] [Indexed: 11/30/2022]
Affiliation(s)
- Ronit Reich-Slotky
- Department of Transfusion Medicine and Cellular Therapy; New York Presbyterian Hospital/Weill Cornell Medical Center; New York New York
| | - Lohith S. Bachegowda
- Department of Transfusion Medicine and Cellular Therapy; New York Presbyterian Hospital/Weill Cornell Medical Center; New York New York
- National Cord Blood Program; New York Blood Center; New York New York
| | - Michael Ancharski
- Department of Transfusion Medicine and Cellular Therapy; New York Presbyterian Hospital/Weill Cornell Medical Center; New York New York
| | - Lyubov Mendeleyeva
- Department of Transfusion Medicine and Cellular Therapy; New York Presbyterian Hospital/Weill Cornell Medical Center; New York New York
| | - Pablo Rubinstein
- National Cord Blood Program; New York Blood Center; New York New York
| | | | - Tsiporah Shore
- Department of Medicine; Weill Cornell Medical College; New York New York
| | - Koen van Besien
- Department of Medicine; Weill Cornell Medical College; New York New York
| | - Melissa Cushing
- Department of Transfusion Medicine and Cellular Therapy; New York Presbyterian Hospital/Weill Cornell Medical Center; New York New York
- Department of Pathology and Laboratory Medicine
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Fichter M, Dedters M, Pietrzak-Nguyen A, Pretsch L, Meyer CU, Strand S, Zepp F, Baier G, Landfester K, Gehring S. Monophosphoryl lipid A coating of hydroxyethyl starch nanocapsules drastically increases uptake and maturation by dendritic cells while minimizing the adjuvant dosage. Vaccine 2015; 33:838-46. [DOI: 10.1016/j.vaccine.2014.12.072] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 11/24/2014] [Accepted: 12/25/2014] [Indexed: 10/24/2022]
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Frampton JP, Lai D, Lounds M, Chung K, Kim J, Mansfield JF, Takayama S. Elongation of fibers from highly viscous dextran solutions enables fabrication of rapidly dissolving drug carrying fabrics. Adv Healthc Mater 2015; 4:313-9. [PMID: 25204273 DOI: 10.1002/adhm.201400287] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Revised: 08/14/2014] [Indexed: 11/08/2022]
Abstract
A simple method is presented for forming thread-like fibers from highly viscous dextran solutions. Based on the cohesive and adhesive forces between a dextran solution and the substrate to which it is applied, multiple fibers of approximately 10 μm in diameter can be elongated simultaneously. These fibers can be woven into multiple layers to produce fabrics of varying fiber orientations and mechanical properties. Various bioactive agents can be incorporated into the dextran solution prior to fiber formation, including hemostatic and antibiotic agents. Fabrics containing thrombin are capable of coagulating human platelet poor plasma in vitro. Fabrics containing antibiotics are capable of suppressing bacterial growth in a disk diffusion assay. These data suggest that this new material composed entirely of dextran has promise as a drug delivery component in wound dressings.
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Affiliation(s)
- John P. Frampton
- University of Michigan, Biointerfaces Institute; Ann Arbor MI48108 USA
| | - David Lai
- University of Michigan, Biointerfaces Institute; Ann Arbor MI48108 USA
| | - Maxwell Lounds
- University of Michigan, Biointerfaces Institute; Ann Arbor MI48108 USA
| | - Kyeongwoon Chung
- University of Michigan, Biointerfaces Institute; Ann Arbor MI48108 USA
| | - Jinsang Kim
- University of Michigan, Biointerfaces Institute; Ann Arbor MI48108 USA
| | - John F. Mansfield
- University of Michigan, Biointerfaces Institute; Ann Arbor MI48108 USA
| | - Shuichi Takayama
- University of Michigan, Biointerfaces Institute; Ann Arbor MI48108 USA
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Abstract
Crystalloids and colloids are used in prehospital fluid resuscitation to replace blood loss and preserve tissue perfusion until definite surgical control of bleeding can be achieved. However, large volumes of fluids will increase bleeding by elevating blood pressure, dislodging blood clots, and diluting coagulation factors and platelets. Hypotensive fluid resuscitation strategies are used to avoid worsening of uncontrolled bleeding. This is largely supported by animal studies. Most clinical evidence suggests that restricting fluid therapy is associated with improved outcome. Remote damage control resuscitation emphasizes the early use of blood products and restriction of other fluids to support coagulation and tissue oxygenation. Controversy regarding the optimal choice and composition of resuscitation fluids is ongoing. Compared with crystalloids, less colloid is needed for the same expansion of intravascular volume. On the other hand, colloids may cause coagulopathy not only related to dilution. The most important advantage of using colloids is logistical because less volume and weight are needed. In conclusion, prehospital fluid resuscitation is considered the standard of care, but there is little clinical evidence supporting the use of either crystalloids or colloids in remote damage control resuscitation. Alternative resuscitation fluids are needed.
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Pietrzak-Nguyen A, Fichter M, Dedters M, Pretsch L, Gregory SH, Meyer C, Doganci A, Diken M, Landfester K, Baier G, Gehring S. Enhanced in vivo targeting of murine nonparenchymal liver cells with monophosphoryl lipid A functionalized microcapsules. Biomacromolecules 2014; 15:2378-88. [PMID: 24901387 DOI: 10.1021/bm5006728] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A broad spectrum of infectious liver diseases emphasizes the need of microparticles for targeted delivery of immunomodulatory substances to the liver. Microcapsules (MCs) are particularly attractive for innovative drug and vaccine formulations, enabling the combination of antigen, drugs, and adjuvants. The present study aimed to develop microcapsules characterized by an enhanced liver deposition and accelerated uptake by nonparenchymal liver cells (NPCs). Initially, two formulations of biodegradable microcapsules were synthesized from either hydroxyethyl starch (HES) or mannose. Notably, HES-MCs accumulated primarily in the liver, while mannose particles displayed a lung preference. Functionalization of HES-MCs with anti-CD40, anti-DEC205, and/or monophosphoryl lipid A (MPLA) enhanced uptake of MCs by nonparenchymal liver cells in vitro. In contrast, only MPLA-coated HES-MCs promoted significantly the in vivo uptake by NPCs. Finally, HES-MCs equipped with MPLA, anti-CD40, and anti-DEC205 induced the secretion of TNF-α, IL-6 by Kupffer cells (KCs), and IFN-γ and IL-12p70 by liver dendritic cells (DCs). The enhanced uptake and activation of KCs by MPLA-HES-MCs is a promising approach to prevent or treat infection, since KCs are exploited as an entry gate in various infectious diseases, such as malaria. In parallel, loading and activating liver DCs, usually prone to tolerance, bears the potential to induce antigen specific, intrahepatic immune responses necessary to prevent and treat infections affecting the liver.
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Affiliation(s)
- Anette Pietrzak-Nguyen
- Children's Hospital, University Medical Center, Johannes Gutenberg University , Mainz 55131, Germany
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Toyoda D, Shinoda S, Kotake Y. Pros and cons of tetrastarch solution for critically ill patients. J Intensive Care 2014; 2:23. [PMID: 25520835 PMCID: PMC4267598 DOI: 10.1186/2052-0492-2-23] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Accepted: 03/06/2014] [Indexed: 01/11/2023] Open
Abstract
Proper fluid management is crucial for the management of critically ill patients. However, there is a continuing debate about the choice of the fluid, i.e., crystalloid vs. colloid. Colloid solution is theoretically advantageous to the crystalloid because of larger volume effect and less interstitial fluid accumulation, and hydroxyethyl starch (HES) is most frequently used for perioperative setting. Nevertheless, application of HES solution is relatively limited due to its side effects including renal toxicity and coagulopathy. Since prolonged presence of large HES molecule is responsible for these side effects, rapidly degradable HES solution with low degree of substitution (tetrastarch) supposedly has less potential for negative effects. Thus, tetrastarch may be more frequently used in the ICU setting. However, several large-scale randomized trials reported that administration of tetrastarch solution to the patients with severe sepsis has negative effects on mortality and renal function. These results triggered further debate and regulatory responses around the world. This narrative review intended to describe the currently available evidence about the advantages and disadvantages of tetrastarch in the ICU setting.
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Affiliation(s)
- Daisuke Toyoda
- Department of Anesthesiology, Toho University Ohashi Medical Center, 2-17-6, Ohashi, Meguro, Tokyo, 153-8515 Japan
| | - Shigeo Shinoda
- Department of Anesthesiology, Toho University Ohashi Medical Center, 2-17-6, Ohashi, Meguro, Tokyo, 153-8515 Japan
| | - Yoshifumi Kotake
- Department of Anesthesiology, Toho University Ohashi Medical Center, 2-17-6, Ohashi, Meguro, Tokyo, 153-8515 Japan
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Farrugia A, Bansal M, Balboni S, Kimber MC, Martin GS, Cassar J. Choice of Fluids in Severe Septic Patients - A Cost-effectiveness Analysis Informed by Recent Clinical Trials. Rev Recent Clin Trials 2014; 9:21-30. [PMID: 24330133 PMCID: PMC4112378 DOI: 10.2174/1574887108666131213120816] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Revised: 12/03/2013] [Accepted: 12/07/2013] [Indexed: 12/29/2022]
Abstract
Fluid resuscitation with colloids is an established second line therapy for septic patients. Evidence of relative efficacy outcomes is tempered by considerations of the relative costs of the individual fluids. An assessment of recent large clinical trials was performed, resulting in a ranking in the efficacy of these therapies. Probabilities for mortality and the need for renal replacement therapy (RRT) were derived and used to inform a decision analysis model comparing the effect of crystalloid, albumin and hydroxyethyl starch solutions in severe septic patients followed from hospital admission to 90 days in intensive care. The US payer perspective was used. Model inputs for costs and efficacy were derived from the peer-reviewed literature, assuming that that all fluid preparations are bio-equivalent within each class of these therapies. Probabilities for mortality and the need for renal replacement therapy (RRT) data were synthesized using a Bayesian meta-analysis. Relative to crystalloid therapy, 0.21 life years were gained with albumin and 0.85 life years were lost with hydroxyethyl starch. One-way sensitivity analysis showed that the model's outcomes were sensitive to the cost of RRT but not to the costs of the actual fluids or any other costs. We conclude that albumin may be the most cost-effective treatment in these patients when the total medical costs and iatrogenic morbidities involved in treating sepsis with fluids are considered. These results should assist and inform decision making in the choice of these drugs.
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Affiliation(s)
- Albert Farrugia
- 147 Old Solomons Island Road, Suite#100, Annapolis, MD 21401, Australia.
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Epstein KL, Bergren A, Giguère S, Brainard BM. Cardiovascular, colloid osmotic pressure, and hemostatic effects of 2 formulations of hydroxyethyl starch in healthy horses. J Vet Intern Med 2013; 28:223-33. [PMID: 24428324 PMCID: PMC4895541 DOI: 10.1111/jvim.12245] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Revised: 08/02/2013] [Accepted: 09/24/2013] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Lower molecular weight and molar substitution formulations of hydroxyethyl starch (HES) solutions might maximize cardiovascular function and colloid osmotic pressure (COP) and minimize adverse effects on coagulation. HYPOTHESIS/OBJECTIVES To compare effects of 1 low and 1 high molecular weight and molar substitution HES solution on cardiovascular variables, COP, and hemostasis in normal horses. ANIMALS Eight healthy adult horses. METHODS Randomized, crossover designed study: 10 mL/kg bolus of 6% HES (600/0.75) (hetastarch) (HS), 6% HES (130/0.4) tetrastarch (TS), and 0.9% NaCl (NS). Variables recorded included central venous pressure (CVP), noninvasive arterial blood pressure, packed cell volume (PCV), COP, and automated platelet analysis (CT). RESULTS Central venous pressure was increased for 8 hours after all treatment (baseline = 8.4 ± 3.8; 8 hours = 10.3 ± 3.5 cm H2 O; P < .001). HS and TS produced an increase in systolic arterial pressure (HS = 109.1 ± 11.9; TS = 109.5 ± 10.9 mmHg) and mean arterial pressure (HS = 80.4 ± 13.0; TS = 82.3 ± 10.1 mmHg) compared to NS (SAP = 103.2 ± 13.2 [P = .023]; MAP = 74.2 ± 11.4 mmHg [P = .048]). PCV decreased transiently with HS (baseline = 37.1 ± 4.4%; 1.5 hours = 31.6 ± 3.9%) and TS (baseline = 38.4 ± 3.9%; 1.5 hours = 32.2 ± 3.3%), but not NS (P = .007). COP was greater with HS (1 hour; 24.0 ± 2.1 mmHg) and TS (8 hours; 25.9 ± 2.1 mmHg) than NS (1 hour = 20.8 ± 2.6; 8 hours = 22.9 ± 3.1 mmHg; P < .001). CT was greater at 8 (HS = 178.6 ± 36.9; TS = 121.9 ± 33.3; NS = 108.3 ± 23.6 seconds) and 24 hours (HS = 174.2 ± 41.7; TS = 100.8 ± 26.0; NS = 118.7 ± 38.7 seconds; P < .001) in horses receiving HS than TS or NS. CONCLUSION AND CLINICAL IMPORTANCE Both TS and HS resulted in more effective volume expansion and arterial pressure support than NS. TS produced a more sustained effect on COP with shorter duration of adverse effects on platelet function than HS.
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Affiliation(s)
- K L Epstein
- Department of Large Animal Medicine, College of Veterinary Medicine, University of Georgia, Athens, GA
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Influence of resuscitation fluids, fresh frozen plasma and antifibrinolytics on fibrinolysis in a thrombelastography-based, in-vitro, whole-blood model. Blood Coagul Fibrinolysis 2013; 24:489-97. [PMID: 23406662 DOI: 10.1097/mbc.0b013e32835e4246] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Hyperfibrinolysis has been identified as a mechanism of trauma coagulopathy associated with poor outcome. The aim of the study was to create a trauma coagulopathy model (TCM) with a hyperfibrinolysis thrombelastography (TEG) pattern similar to injured patients and test the effects of different resuscitation fluids and antifibrinolytics on fibrinolysis. TCM was established from whole blood by either 15% dilution with isotonic saline, lactated Ringer's, Plasma-Lyte, 5% albumin, Voluven, Hextend, 6% dextran in isotonic saline or 30% dilution with lactated Ringer's plus Voluven and supplementation with tissue factor and tissue plasminogen activator (tPA). These combinations resulted in a TCM that could then be 'treated' with tranexamic acid (TXA) or 6-aminocaproic acid (ACA). Clot formation was evaluated by TEG. Whole-blood dilution by 15% with crystalloids and albumin in the presence of tissue factor plus tPA resulted in an abnormal TEG pattern and increased fibrinolysis, as did dilution with synthetic colloids. TXA 1 μg/ml or ACA 10 μg/ml were sufficient to suppress fibrinolysis when TCM was diluted 15% with lactated Ringer's, but 3 μg/ml of TXA or 30 μg/ml of ACA were needed for fibrinolysis inhibition induced by simultaneous euvolemic dilution with lactated Ringer's plus Voluven by 30%. A total of 15% dilution of whole blood in the presence of tissue factor plus tPA results in a hyperfibrinolysis TEG pattern similar to that observed in severely injured patients. Synthetic colloids worsen TEG variables with a further increase of fibrinolysis. Low concentrations of TXA or ACA reversed hyperfibrinolysis, but the efficient concentrations were dependent on the degree of fibrinolysis and whole-blood dilution.
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Evaluation of resuscitation fluids on endothelial glycocalyx, venular blood flow, and coagulation function after hemorrhagic shock in rats. J Trauma Acute Care Surg 2013; 75:759-66. [DOI: 10.1097/ta.0b013e3182a92514] [Citation(s) in RCA: 105] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Blong AE, Epstein KL, Brainard BM. In vitro effects of three formulations of hydroxyethyl starch solutions on coagulation and platelet function in horses. Am J Vet Res 2013; 74:712-20. [PMID: 23627384 DOI: 10.2460/ajvr.74.5.712] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To investigate the in vitro effects of 3 hydroxyethyl starch (HES) solutions on viscoelastic coagulation testing and platelet function in horses. SAMPLE Blood samples collected from 7 healthy adult horses. PROCEDURES Blood samples were diluted with various crystalloid and HES solutions to approximate the dilution of blood in vivo that occurs with administration of a 10 and 20 mL/kg fluid bolus to a horse (1:8 and 1:4 dilutions, respectively). Diluted samples were analyzed through optical platelet aggregometry, platelet function analysis, thromboelastography, and dynamic viscoelastic coagulometry. Colloid osmotic pressure and concentrations of von Willebrand factor and factor VIII:C were also determined for each sample. RESULTS For all HES products, at both dilutions, the colloid osmotic pressure was significantly higher than that in the respective carrier solutions. At the 1:4 dilution, nearly all HES solutions resulted in significant alterations in platelet function as measured via the platelet function analyzer and dynamic viscoelastic coagulometer. Significant decreases in platelet aggregation and factor concentrations were also evident. Fewer HES-associated changes were identified at the 1:8 dilutions. CONCLUSIONS AND CLINICAL RELEVANCE Dilution of blood samples with all HES solutions resulted in changes in viscoelastic coagulation and platelet function that did not appear to be attributable to dilution alone. In vivo evaluations are necessary to understand the clinical impact of these in vitro changes.
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Affiliation(s)
- April E Blong
- Department of Clinical Sciences, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA.
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Frick K, Michael TT, Alomar M, Mohammed A, Rangan BV, Abdullah S, Grodin J, Hastings JL, Banerjee S, Brilakis ES. Low molecular weight dextran provides similar optical coherence tomography coronary imaging compared to radiographic contrast media. Catheter Cardiovasc Interv 2013; 84:727-31. [PMID: 23804461 DOI: 10.1002/ccd.25092] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 06/16/2013] [Indexed: 12/29/2022]
Abstract
BACKGROUND Optical coherence tomography (OCT) coronary imaging requires displacement of red blood cells from the vessel lumen. This is usually accomplished using radiographic contrast. Low molecular weight dextran has low cost and is safe in low volumes. In the present study, we compared dextran with contrast for coronary OCT imaging. METHODS Fifty-one vessels in 26 patients were sequentially imaged using manual injection of radiographic contrast (iodixanol) and dextran. OCT images were analyzed at 1 mm intervals to determine the image clarity (defined as a visible lumen border > 270°) and to measure the lumen area and lumen diameter. To correct for the refractive index of dextran, the dextran area measurements were multiplied by 1.117 and the dextran length measurements were multiplied by 1.057. RESULTS A total of 3,418 cross-sections (1,709 with contrast and 1,709 with dextran) were analyzed. There were no complications related to OCT imaging or to contrast or dextran administration. Clear image segments were observed in 97.0% vs. 96.7% of the cross-sections obtained with contrast and dextran, respectively (P = 0.45). The mean lumen areas were also similar: 6.69 ± 1.95 mm(2) with iodixanol vs. 7.06 ± 2.06 mm(2) with dextran (correlation coefficient 0.984). CONCLUSIONS The image quality and measurements during OCT image acquisition are similar for dextran and contrast. Dextran could be used instead of contrast for OCT imaging, especially in patients in whom contrast load minimization is desired.
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Affiliation(s)
- Kyle Frick
- VA North Texas Healthcare System and University of Texas Southwestern Medical Center at Dallas, Dallas, Texas
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Classen J, Adamik KN, Weber K, Rubenbauer S, Hartmann K. In vitro effect of hydroxyethyl starch 130/0.42 on canine platelet function. Am J Vet Res 2013; 73:1908-12. [PMID: 23176416 DOI: 10.2460/ajvr.73.12.1908] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To evaluate the effect of 6% hydroxyethyl starch (HES) solution, with a molecular weight of 130 kDa and a degree of substitution of 0.42, on canine platelet function in vitro. SAMPLES Blood samples from 31 healthy adult dogs. PROCEDURES Citrated blood was diluted with saline (0.9% NaCl) solution or HES 130/0.42 in ratios of 1:9 (ie, 1 part saline solution or HES 130/0.42 and 9 parts blood) and 1:3. Platelet plug formation time (closure time [Ct]) was measured with a platelet function analyzer and cartridges coated with collagen and ADP. RESULTS Median baseline Ct with citrated blood was 84.0 seconds (interquartile range, 74.5 to 99.5 seconds). Results obtained with 1:9 dilutions with saline solution and HES 130/0.42 were not significantly different from baseline results. The 1:3 dilutions with saline solution and HES 130/0.42 resulted in median Cts of 96.0 seconds (interquartile range, 85.5 to 110.8 seconds) and 112.0 seconds (92.0 to 126.0 seconds), respectively. Results obtained with both 1:3 dilutions were significantly different from baseline results. The Ct obtained with the HES dilution was also significantly different from that of the 1:3 dilution with saline solution. CONCLUSIONS AND CLINICAL RELEVANCE Saline solution and HES 130/0.42 in a 1:3 dilution affected canine platelet function by prolonging Cts. The HES 130/0.42 had a significantly greater effect on canine platelets than did saline solution.
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Affiliation(s)
- Janine Classen
- Clinic of Small Animal Medicine, Ludwig Maximilian University, Veterinaerstrasse 13, 80539 Munich, Germany
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40
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Mauch J, Madjdpour C, Kutter APN, Spielmann N, Bettschart-Wolfensberger R, Weiss M, Haas T. Effect of rapid fluid resuscitation using crystalloids or colloids on hemostasis in piglets. Paediatr Anaesth 2013; 23:258-64. [PMID: 23279083 DOI: 10.1111/pan.12106] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/27/2012] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND OBJECTIVES Impairment of blood coagulation is one of the main side effects of volume replacement, particularly if artificial colloids such as hydroxyethyl starch (HES) and gelatine preparations are used. This animal study aimed to evaluate the effect of a single fast intravenous crystalloid or colloid fluid bolus on blood coagulation as measured by rotation thromboelastometry (ROTEM). METHODS Thirty-two anesthetized piglets were infused with a rapid 20 ml·kg(-1) fluid bolus of either normal saline (NS), 4% gelatine, 5% albumin or 6% HES 130/0.4 (n = 8 per group) over a period of 2 min. Hemostasis was assessed by ROTEM before and 1 min after fluid administration. Within-group differences were analyzed by Wilcoxon test, and additionally overall Kruskal-Wallis test followed by posthoc Mann-Whitney U-test were applied to detect differences between groups. RESULTS All fluids caused a significant weakening of clot strength within groups. HES and gelatine showed a significantly stronger impairment of clot growth and maximum clot firmness as compared with albumin and normal saline. Impairment of fibrin polymerization was more pronounced following HES as compared with all other fluids. CONCLUSION After moderate but very fast volume loading, HES and gelatine impair blood coagulation to a larger extent as compared with albumin or normal saline, while no significant differences were observed between both artificial colloids.
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Affiliation(s)
- Jacqueline Mauch
- Department of Anaesthesia, University Children's Hospital Zurich, Zurich, Switzerland
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Richard P, Huesler R, Banic A, Erni D, Plock JA. Perioperative risk factors for haematoma after breast augmentation. J Plast Surg Hand Surg 2013; 47:130-4. [DOI: 10.3109/2000656x.2012.740675] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Haas T, Mauch J, Weiss M, Schmugge M. Management of Dilutional Coagulopathy during Pediatric Major Surgery. Transfus Med Hemother 2012; 39:114-119. [PMID: 22670129 PMCID: PMC3364035 DOI: 10.1159/000337245] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Accepted: 01/31/2012] [Indexed: 12/19/2022] Open
Abstract
Perioperative dilutional coagulopathy is a major coagulation disorder during adult and pediatric surgery. Although the main underlying mechanisms are comparable, data of the development and management of dilutional coagulopathy in children are scarce. Observational data showed that intraoperative coagulation disorders mainly based on complex disturbances of clot firmness including acquired fibrinogen as well as factor XIII deficiencies, while clotting time and platelet counts remained fairly stable. A fast and reliable monitoring of the entire coagulation process (e.g. thrombelastometry) might be of extreme value for detection and guidance of effective coagulation management. Although the transfusion of fresh frozen plasma was recommended in several guidelines, the use of coagulation factors might offer an alternative and potentially superior approach in managing perioperative coagulation disorders. Further studies are urgently needed to determine the efficacy of modern coagulation management.
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Affiliation(s)
- Thorsten Haas
- Department of Anaesthesia, University Children's Hospital Zurich, Switzerland
| | - Jacqueline Mauch
- Department of Anaesthesia, University Children's Hospital Zurich, Switzerland
| | - Markus Weiss
- Department of Anaesthesia, University Children's Hospital Zurich, Switzerland
| | - Markus Schmugge
- Department of Haematology, University Children's Hospital Zurich, Switzerland
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Neel DR, McClave S, Martindale R. Hypoalbuminaemia in the perioperative period: clinical significance and management options. Best Pract Res Clin Anaesthesiol 2011; 25:395-400. [PMID: 21925404 DOI: 10.1016/j.bpa.2011.07.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2011] [Accepted: 07/12/2011] [Indexed: 12/15/2022]
Abstract
Albumin has been the focus of literally thousands of articles since its first use in the clinical setting during World War II. Despite being at the centre of several clinical controversies, many questions still remain regarding the use and abuse of albumin. The major physiologic functions include maintaining colloid osmotic pressure, binding and transport of metabolically active molecules, serving as an antioxidant, use as a surrogate marker of nutritional status and predictor of outcome in elective surgical populations, having an anti-thrombotic influence on platelets, aiding in acid-base balance and having a protective influence on capillary membrane integrity. Albumin will continue to be widely used in clinical medicine despite many of the drawbacks. It now appears the benefits in the use of albumin in most cases outweigh the risks. The clinical implications of hypoalbuminaemia as an indicator of surgical or intensive care unit (ICU) outcome or nutritional status is clearly disease- and organ specific. The use of albumin as a volume expander appears to have limited, if any, benefit over crystalloid. The "secondary" benefits of albumin in specific surgical and intensive-care conditions, such as sepsis and organ dysfunction, are numerous and are well supported in the current literature.
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Affiliation(s)
- Dustin R Neel
- Division of General Surgery, Oregon Health and Science University, 3181 SW Sam Jackson Park Rd, L223A, Portland, OR 97239, USA
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Patki A, Shelgaonkar V. Effect of 6% hydroxyethyl starch-450 and low molecular weight dextran on blood sugar levels during surgery under subarachnoid block: A prospective randomised study. Indian J Anaesth 2011; 54:448-52. [PMID: 21189884 PMCID: PMC2991656 DOI: 10.4103/0019-5049.71045] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Dextrans and hydroxyethyl starches produce significant levels of free glucose residues following metabolism. The following study was designed to compare 6% hydroxyethyl starch-450 with Dextran 40, both used as preloading fluids, for their potential to raise peri-operative blood glucose levels. After taking an informed consent, 180 non-diabetic adult patients, posted for elective surgery under spinal anaesthesia, were randomly divided into three groups, to receive Ringer’s Lactate 20 ml/kg (group 1), Dextran 40,10 ml/kg (group 2) and Hestar 6%-450, 10 ml/kg (group 3), over half an hour, prior to the subarachnoid block, as preloading fluid, and serial capillary blood glucose measurements were taken thereafter at regular intervals up to 240 minutes from the baseline reading. All the three preloading fluids, including Ringer’s Lactate used as control, were seen to significantly increase the capillary blood glucose levels intra-operatively (P < 0.05), but the rise with Dextran-40 was seen to be sustained and highly significant (P < 0.001). We thus conclude that, Dextran40 causes a sustained and significant rise in peri-operative blood glucose levels.
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Affiliation(s)
- Abhiruchi Patki
- Department of Anaesthesiology, Indira Gandhi Medical College and Mayo Hospital, Nagpur, India
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Chohan AS, Greene SA, Grubb TL, Keegan RD, Wills TB, Martinez SA. Effects of 6% hetastarch (600/0.75) or lactated Ringer's solution on hemostatic variables and clinical bleeding in healthy dogs anesthetized for orthopedic surgery. Vet Anaesth Analg 2011; 38:94-105. [PMID: 21303440 DOI: 10.1111/j.1467-2995.2010.00589.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To evaluate and compare hemostatic variables and clinical bleeding following the administration of 6% hetastarch (600/0.75) or lactated Ringer's solution (LRS) to dogs anesthetized for orthopedic surgery. STUDY DESIGN Randomized blinded prospective study. ANIMALS Fourteen, healthy adult mixed-breed hound dogs of either sex, aged 11-13 months, and weighing 20.8±1.2 kg. METHODS The dogs were randomly assigned to receive a 10 mL kg(-1) intravenous (i.v.) bolus of either 6% hetastarch (600/0.75) or LRS over 20 minutes followed by a maintenance infusion of LRS (10 mL kg(-1) hour(-1)) during anesthesia. Before (Baseline) and at 1 and 24 hours after bolus administration, packed cell volume (PCV), total protein concentration (TP), prothrombin time (PT), activated partial thromboplastin time (APTT), von Willebrand's factor antigen concentration (vWF:Ag), factor VIII coagulant activity (F VIII:C), platelet count, platelet aggregation, colloid osmotic pressure (COP) and buccal mucosal bleeding time (BMBT) were measured. In addition a surgeon who was blinded to the treatments assessed bleeding from the incision site during the procedure and at 1 and 24 hours after the bolus administration. RESULTS Following hetastarch or LRS administration, the PCV and TP decreased significantly 1-hour post-infusion. APTT did not change significantly compared to baseline in either treatment group, but the PT was significantly longer at 1-hour post-infusion than at 24 hours in both groups. No significant change was detected for vWF:Ag, FVIII:C, platelet aggregation or clinical bleeding in either group. The BMBT increased while platelet count decreased significantly at 1-hour post-infusion in both groups. The COP decreased significantly in both treatment groups 1-hour post-infusion but was significantly higher 1-hour post-infusion in the hetastarch group compared to the LRS group. CONCLUSIONS AND CLINICAL RELEVANCE At the doses administered, both hetastarch and LRS can alter hemostatic variables in healthy dogs. However, in these dogs undergoing orthopedic surgery, neither fluid was associated with increased clinical bleeding.
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Affiliation(s)
- Amandeep S Chohan
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman, WA 99164-6610, USA.
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Turker G, Yilmazlar T, Mogol EB, Gurbet A, Dizman S, Gunay H. The Effects of Colloid Pre-Loading on Thromboelastography Prior to Caesarean Delivery: Hydroxyethyl Starch 130/0.4 versus Succinylated Gelatine. J Int Med Res 2011; 39:143-9. [DOI: 10.1177/147323001103900115] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This prospective, randomized, double-blind study compared the effects on thromboelastography (TEG) of preloading with two different colloid fluids prior to spinal anaesthesia for caesarean section. Healthy full-term parturients received either 500 ml 6% hydroxyethyl starch 130/0.4 (HES, n = 25) or 500 ml 4% succinylated gelatine (GEL, n = 25) prior to spinal anaesthesia. TEG parameters including reaction time (r-time), clot formation time (k-time), clot formation rate (α-angle) and maximum amplitude (MA) were measured immediately before and after pre-loading. Both groups had significantly shorter r-time and lower MA after pre-loading. The α-angle was significantly decreased after pre-loading with HES but not with GEL. No significant differences in k-time were induced pre-loading. In conclusion, preloading with HES or GEL was associated with a mild hypocoagulable effect in healthy parturients presenting for elective caesarean section; however, all TEG parameters in both groups remained within or very close to the normal range after pre-loading.
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Affiliation(s)
- G Turker
- Department of Anaesthesiology, Uludag University Medical Faculty, Bursa, Turkey
| | - T Yilmazlar
- Department of Anaesthesiology, Uludag University Medical Faculty, Bursa, Turkey
| | - E Basagan Mogol
- Department of Anaesthesiology, Uludag University Medical Faculty, Bursa, Turkey
| | - A Gurbet
- Department of Anaesthesiology, Uludag University Medical Faculty, Bursa, Turkey
| | - S Dizman
- Department of Anaesthesiology, Uludag University Medical Faculty, Bursa, Turkey
| | - H Gunay
- Department of Anaesthesiology, Uludag University Medical Faculty, Bursa, Turkey
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Harrois A, Duranteau J. Le point sur la coagulation — Coagulopathies et syndromes hémorragiques en réanimation. MEDECINE INTENSIVE REANIMATION 2011. [DOI: 10.1007/s13546-010-0033-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Niemi TT, Miyashita R, Yamakage M. Colloid solutions: a clinical update. J Anesth 2010; 24:913-25. [DOI: 10.1007/s00540-010-1034-y] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2009] [Accepted: 09/23/2010] [Indexed: 01/17/2023]
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