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Goel G, Semwal S, Khare A, Joshi D, Amerneni CK, Pakhare A, Kapoor N. Immature Platelet Fraction: Its Clinical Utility in Thrombocytopenia Patients. J Lab Physicians 2021; 13:214-218. [PMID: 34602784 PMCID: PMC8478497 DOI: 10.1055/s-0041-1729471] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
Objectives Etiology of thrombocytopenia is multifactorial and its pathogenesis should be distinguished for appropriate management. Newly formed immature platelets are called reticulated platelets (RPs) and can be estimated in peripheral blood using automated hematology analyzers, which express them as immature platelet fraction (IPF). In the present study we intend to assess and establish the clinical utility of IPF in differentiating the two major causes of thrombocytopenia-decreased production and increased destruction of platelets-along with determining its significance in monitoring patients with thrombocytopenia. Materials and Methods Sixty-one cases of thrombocytopenia and 101 healthy controls with normal platelet count were included in the study. IPF and all the other usual blood cell parameters were measured using a fully automated hematology analyzer. Based on the pathogenesis of thrombocytopenia, the cases were divided into groups and the difference in IPF value between the groups was evaluated. Results The reference range of IPF among healthy controls was estimated to be 0.7 to 5.7%. The mean IPF was significantly higher in patients with increased peripheral destruction of platelets (13.4%) as compared to patients with decreased production of platelets (4.6%). The optimal cutoff value of IPF for differentiating patients with increased peripheral destruction of platelets from patients with decreased production of platelets was 5.95% with a sensitivity of 88% and specificity of 75.9%. Conclusion Measurement of IPF is useful for detecting evidence of increased platelet production and helps in the initial evaluation of thrombocytopenia patients. It is a novel diagnostic method which can be used to differentiate patients with thrombocytopenia due to increased destruction of platelets from patients with thrombocytopenia due to bone marrow failure/suppression.
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Affiliation(s)
- Garima Goel
- Department of Pathology and Laboratory Medicine, All India Institute of Medical Sciences, Bhopal, Madhya Pradesh, India
| | - Shruti Semwal
- Department of Pathology, L.N. Medical College and J.K. Hospital, Bhopal, Madhya Pradesh, India
| | - Akriti Khare
- Department of Hematology, All India Institute of Medical Sciences, Delhi, India
| | - Deepti Joshi
- Department of Pathology and Laboratory Medicine, All India Institute of Medical Sciences, Bhopal, Madhya Pradesh, India
| | - Chaitanya K Amerneni
- Department of Pathology and Lab Medicine, All India Institute of Medical Sciences, Bhopal, Madhya Pradesh, India
| | - Abhijit Pakhare
- Department of Community and Family Medicine, All India Institute of Medical Sciences, Bhopal, Madhya Pradesh, India
| | - Neelkamal Kapoor
- Department of Pathology and Laboratory Medicine, All India Institute of Medical Sciences, Bhopal, Madhya Pradesh, India
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Laroche V, Blais‐Normandin I. Clinical Uses of Blood Components. Transfus Med 2021. [DOI: 10.1002/9781119599586.ch10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Post R, Tjerkstra MA, Middeldorp S, Van den Berg R, Roos YBWEM, Coert BA, Verbaan D, Vandertop WP. Platelet transfusion in patients with aneurysmal subarachnoid hemorrhage is associated with poor clinical outcome. Sci Rep 2020; 10:856. [PMID: 31964972 PMCID: PMC6972790 DOI: 10.1038/s41598-020-57683-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 01/06/2020] [Indexed: 12/21/2022] Open
Abstract
Patients with subarachnoid hemorrhage (SAH) who are using antiplatelet drugs prior to their hemorrhage, often receive platelet transfusions to reverse antiplatelet effects prior to life-saving surgical interventions. However, little is known about the effect of platelet transfusion on patient outcome in these patients. The aim of this study is to investigate the effect of platelet transfusion on clinical outcome in patients with aneurysmal SAH (aSAH) who use antiplatelet agents. Consecutive adult patients with an aSAH admitted between 2011 and 2015 to the Academic Medical Center (Amsterdam, the Netherlands) were included. Demographic characteristics and in-hospital complications were compared and clinical outcome was assessed after six months. Multivariable logistic regression analysis was performed to correct for confounding variables. A total of 364 patients with an aSAH were included. Thirty-eight (10%) patients underwent platelet transfusion during admission. Patients receiving platelet transfusion had worse clinical outcome (modified Rankin Scale score 4–6) at six months compared to patients without platelet transfusion (65% versus 32%, odds ratio 4.0, 95% confidence interval:1.9–8.1). Multivariable logistic regression analysis showed that platelet transfusion during admission was associated with unfavorable clinical outcome after six months; adjusted for age, treatment modality, modified Fisher and WFNS on admission (adjusted odds ratio 3.3, 95% confidence interval: 1.3–8.4). In this observational study, platelet transfusion was associated with poor clinical outcome at six months after correcting for confounding influences. In aSAH patients who need surgical treatment at low risk of bleeding, the indication for platelet transfusion needs careful weighing of the risk-benefit-balance.
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Affiliation(s)
- R Post
- Department of Neurosurgery, Academic Medical Center Amsterdam, Amsterdam, The Netherlands
| | - M A Tjerkstra
- Department of Neurosurgery, Academic Medical Center Amsterdam, Amsterdam, The Netherlands
| | - S Middeldorp
- Department of Vascular Medicine, Academic Medical Center Amsterdam, Amsterdam, The Netherlands
| | - R Van den Berg
- Department of Radiology, Academic Medical Center Amsterdam, Amsterdam, The Netherlands
| | - Y B W E M Roos
- Department of Neurology, Academic Medical Center Amsterdam, Amsterdam, The Netherlands
| | - B A Coert
- Department of Neurosurgery, Academic Medical Center Amsterdam, Amsterdam, The Netherlands
| | - D Verbaan
- Department of Neurosurgery, Academic Medical Center Amsterdam, Amsterdam, The Netherlands
| | - W P Vandertop
- Department of Neurosurgery, Academic Medical Center Amsterdam, Amsterdam, The Netherlands.
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Patel IJ, Rahim S, Davidson JC, Hanks SE, Tam AL, Walker TG, Wilkins LR, Sarode R, Weinberg I. Society of Interventional Radiology Consensus Guidelines for the Periprocedural Management of Thrombotic and Bleeding Risk in Patients Undergoing Percutaneous Image-Guided Interventions—Part II: Recommendations. J Vasc Interv Radiol 2019; 30:1168-1184.e1. [DOI: 10.1016/j.jvir.2019.04.017] [Citation(s) in RCA: 147] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 04/10/2019] [Accepted: 04/10/2019] [Indexed: 02/06/2023] Open
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McDonnell A, Bride KL, Lim D, Paessler M, Witmer CM, Lambert MP. Utility of the immature platelet fraction in pediatric immune thrombocytopenia: Differentiating from bone marrow failure and predicting bleeding risk. Pediatr Blood Cancer 2018; 65. [PMID: 28921855 DOI: 10.1002/pbc.26812] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 08/09/2017] [Accepted: 08/10/2017] [Indexed: 01/19/2023]
Abstract
BACKGROUND Differentiating childhood immune thrombocytopenia (ITP) from other cause of thrombocytopenia remains a diagnosis of exclusion. Additionally factors that predict bleeding risk for those patients with ITP are currently not well understood. Previous small studies have suggested that immature platelet fraction (IPF) may differentiate ITP from other causes of thrombocytopenia and in combination with other factors may predict bleeding risk. METHODS We performed a retrospective chart review of thrombocytopenic patients with an IPF measured between November 1, 2013 and July 1, 2015. Patients were between 2 months and 21 years of age with a platelet count <50 × 109 /l. Each patient chart was reviewed for final diagnosis and bleeding symptoms. A bleeding severity score was retrospectively assigned. RESULTS Two hundred seventy two patients met inclusion criteria, 97 with ITP, 11 with bone marrow failure (BMF), 126 with malignancy, and 38 with other causes of thrombocytopenia. An IPF > 5.2% differentiated ITP from BMF with 93% sensitivity and 91% specificity. Absolute immature platelet number (AIPN) was significantly lower in ITP patients with severe to life-threatening hemorrhage than those without, despite similar platelet counts. On multivariate analysis, an IPF < 10.4% was confirmed as an independent predictor of bleeding risk at platelet counts <10 × 109 /l in patients with ITP. CONCLUSIONS IPF measurement alone has utility in both the diagnosis of ITP and identifying patients at increased risk of hemorrhage. Further study is required to understand the pathophysiological differences of ITP patients with lower IPF/AIPN.
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Affiliation(s)
- Alicia McDonnell
- Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Karen L Bride
- Division of Hematology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Derick Lim
- Department of Pathology and Laboratory Medicine, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Michele Paessler
- Division of Hematology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.,Department of Pathology and Laboratory Medicine, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Char M Witmer
- Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania.,Division of Hematology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Michele P Lambert
- Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania.,Division of Hematology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
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7
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Schiffer CA, Bohlke K, Delaney M, Hume H, Magdalinski AJ, McCullough JJ, Omel JL, Rainey JM, Rebulla P, Rowley SD, Troner MB, Anderson KC. Platelet Transfusion for Patients With Cancer: American Society of Clinical Oncology Clinical Practice Guideline Update. J Clin Oncol 2018; 36:283-299. [DOI: 10.1200/jco.2017.76.1734] [Citation(s) in RCA: 156] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Purpose To provide evidence-based guidance on the use of platelet transfusion in people with cancer. This guideline updates and replaces the previous ASCO platelet transfusion guideline published initially in 2001. Methods ASCO convened an Expert Panel and conducted a systematic review of the medical literature published from September 1, 2014, through October 26, 2016. This review builds on two 2015 systematic reviews that were conducted by the AABB and the International Collaboration for Transfusion Medicine Guidelines. For clinical questions that were not addressed by the AABB and the International Collaboration for Transfusion Medicine Guidelines (the use of leukoreduction and platelet transfusion in solid tumors or chronic, stable severe thrombocytopenia) or that were addressed partially (invasive procedures), the ASCO search extended back to January 2000. Results The updated ASCO review included 24 more recent publications: three clinical practice guidelines, eight systematic reviews, and 13 observational studies. Recommendations The most substantial change to a previous recommendation involved platelet transfusion in the setting of hematopoietic stem-cell transplantation. Based on data from randomized controlled trials, adult patients who undergo autologous stem-cell transplantation at experienced centers may receive a platelet transfusion at the first sign of bleeding, rather than prophylactically. Prophylactic platelet transfusion at defined platelet count thresholds is still recommended for pediatric patients undergoing autologous stem-cell transplantation and for adult and pediatric patients undergoing allogeneic stem-cell transplantation. Other recommendations address platelet transfusion in patients with hematologic malignancies or solid tumors or in those who undergo invasive procedures. Guidance is also provided regarding the production of platelet products, prevention of Rh alloimmunization, and management of refractoriness to platelet transfusion ( www.asco.org/supportive-care-guidelines and www.asco.org/guidelineswiki ).
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Affiliation(s)
- Charles A. Schiffer
- Charles A. Schiffer, Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI; Kari Bohlke, American Society of Clinical Oncology, Alexandria, VA; Meghan Delaney, Children’s National Medical System & George Washington University, Washington DC; Heather Hume, CHU Sainte-Justine, University of Montreal, Montreal, Quebec, Canada; Anthony J. Magdalinski, Alliance Cancer Specialists, Sellersville, PA; Jeffrey J. McCullough, University of Minnesota, Minneapolis, MN; James L. Omel,
| | - Kari Bohlke
- Charles A. Schiffer, Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI; Kari Bohlke, American Society of Clinical Oncology, Alexandria, VA; Meghan Delaney, Children’s National Medical System & George Washington University, Washington DC; Heather Hume, CHU Sainte-Justine, University of Montreal, Montreal, Quebec, Canada; Anthony J. Magdalinski, Alliance Cancer Specialists, Sellersville, PA; Jeffrey J. McCullough, University of Minnesota, Minneapolis, MN; James L. Omel,
| | - Meghan Delaney
- Charles A. Schiffer, Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI; Kari Bohlke, American Society of Clinical Oncology, Alexandria, VA; Meghan Delaney, Children’s National Medical System & George Washington University, Washington DC; Heather Hume, CHU Sainte-Justine, University of Montreal, Montreal, Quebec, Canada; Anthony J. Magdalinski, Alliance Cancer Specialists, Sellersville, PA; Jeffrey J. McCullough, University of Minnesota, Minneapolis, MN; James L. Omel,
| | - Heather Hume
- Charles A. Schiffer, Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI; Kari Bohlke, American Society of Clinical Oncology, Alexandria, VA; Meghan Delaney, Children’s National Medical System & George Washington University, Washington DC; Heather Hume, CHU Sainte-Justine, University of Montreal, Montreal, Quebec, Canada; Anthony J. Magdalinski, Alliance Cancer Specialists, Sellersville, PA; Jeffrey J. McCullough, University of Minnesota, Minneapolis, MN; James L. Omel,
| | - Anthony J. Magdalinski
- Charles A. Schiffer, Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI; Kari Bohlke, American Society of Clinical Oncology, Alexandria, VA; Meghan Delaney, Children’s National Medical System & George Washington University, Washington DC; Heather Hume, CHU Sainte-Justine, University of Montreal, Montreal, Quebec, Canada; Anthony J. Magdalinski, Alliance Cancer Specialists, Sellersville, PA; Jeffrey J. McCullough, University of Minnesota, Minneapolis, MN; James L. Omel,
| | - Jeffrey J. McCullough
- Charles A. Schiffer, Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI; Kari Bohlke, American Society of Clinical Oncology, Alexandria, VA; Meghan Delaney, Children’s National Medical System & George Washington University, Washington DC; Heather Hume, CHU Sainte-Justine, University of Montreal, Montreal, Quebec, Canada; Anthony J. Magdalinski, Alliance Cancer Specialists, Sellersville, PA; Jeffrey J. McCullough, University of Minnesota, Minneapolis, MN; James L. Omel,
| | - James L. Omel
- Charles A. Schiffer, Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI; Kari Bohlke, American Society of Clinical Oncology, Alexandria, VA; Meghan Delaney, Children’s National Medical System & George Washington University, Washington DC; Heather Hume, CHU Sainte-Justine, University of Montreal, Montreal, Quebec, Canada; Anthony J. Magdalinski, Alliance Cancer Specialists, Sellersville, PA; Jeffrey J. McCullough, University of Minnesota, Minneapolis, MN; James L. Omel,
| | - John M. Rainey
- Charles A. Schiffer, Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI; Kari Bohlke, American Society of Clinical Oncology, Alexandria, VA; Meghan Delaney, Children’s National Medical System & George Washington University, Washington DC; Heather Hume, CHU Sainte-Justine, University of Montreal, Montreal, Quebec, Canada; Anthony J. Magdalinski, Alliance Cancer Specialists, Sellersville, PA; Jeffrey J. McCullough, University of Minnesota, Minneapolis, MN; James L. Omel,
| | - Paolo Rebulla
- Charles A. Schiffer, Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI; Kari Bohlke, American Society of Clinical Oncology, Alexandria, VA; Meghan Delaney, Children’s National Medical System & George Washington University, Washington DC; Heather Hume, CHU Sainte-Justine, University of Montreal, Montreal, Quebec, Canada; Anthony J. Magdalinski, Alliance Cancer Specialists, Sellersville, PA; Jeffrey J. McCullough, University of Minnesota, Minneapolis, MN; James L. Omel,
| | - Scott D. Rowley
- Charles A. Schiffer, Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI; Kari Bohlke, American Society of Clinical Oncology, Alexandria, VA; Meghan Delaney, Children’s National Medical System & George Washington University, Washington DC; Heather Hume, CHU Sainte-Justine, University of Montreal, Montreal, Quebec, Canada; Anthony J. Magdalinski, Alliance Cancer Specialists, Sellersville, PA; Jeffrey J. McCullough, University of Minnesota, Minneapolis, MN; James L. Omel,
| | - Michael B. Troner
- Charles A. Schiffer, Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI; Kari Bohlke, American Society of Clinical Oncology, Alexandria, VA; Meghan Delaney, Children’s National Medical System & George Washington University, Washington DC; Heather Hume, CHU Sainte-Justine, University of Montreal, Montreal, Quebec, Canada; Anthony J. Magdalinski, Alliance Cancer Specialists, Sellersville, PA; Jeffrey J. McCullough, University of Minnesota, Minneapolis, MN; James L. Omel,
| | - Kenneth C. Anderson
- Charles A. Schiffer, Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI; Kari Bohlke, American Society of Clinical Oncology, Alexandria, VA; Meghan Delaney, Children’s National Medical System & George Washington University, Washington DC; Heather Hume, CHU Sainte-Justine, University of Montreal, Montreal, Quebec, Canada; Anthony J. Magdalinski, Alliance Cancer Specialists, Sellersville, PA; Jeffrey J. McCullough, University of Minnesota, Minneapolis, MN; James L. Omel,
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Opheim EN, Apelseth TO, Stanworth SJ, Eide GE, Hervig T. Thromboelastography may predict risk of grade 2 bleeding in thrombocytopenic patients. Vox Sang 2017. [DOI: 10.1111/vox.12544] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- E. N. Opheim
- Department of Clinical Science; University of Bergen; Bergen Norway
- Department of Immunology and Transfusion Medicine; Haukeland University Hospital; Bergen Norway
| | - T. O. Apelseth
- Department of Immunology and Transfusion Medicine; Haukeland University Hospital; Bergen Norway
- Laboratory of Clinical Biochemistry; Haukeland University Hospital; Bergen Norway
| | - S. J. Stanworth
- NHS Blood and Transplant/Oxford University Hospitals NHS Trust; John Radcliffe Hospital; Oxford UK
| | - G. E. Eide
- Department of Global Public Health and Primary Care; University of Bergen; Bergen Norway
- Centre for Clinical Research; Haukeland University Hospital; Bergen Norway
| | - T. Hervig
- Department of Clinical Science; University of Bergen; Bergen Norway
- Department of Immunology and Transfusion Medicine; Haukeland University Hospital; Bergen Norway
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Abstract
Platelet transfusions play an important role in the treatment of critically ill patients. Like any blood component, however, there are various aspects of platelet transfusion therapy that need be considered by the intensivist. These include the proper dose and type of platelet component to infuse, as well as the route and method of administration. Methods to reduce the volume of the transfused platelets, for example, must ensure that the infused platelets will be functional and viable, posttransfusion. Treatment and diagnosis of the HLA alloimmunized recipient can pose a serious challenge to the clinician and an obstacle to adequate platelet therapy. An ICU patient for whom an adequate posttransfusion platelet increment cannot be achieved is at great risk of suffering a fatal hemorrhage. The ICU physician should be aware of the techniques used in modern transfusion practice to avoid having to deal with this complication. Adverse reactions to platelet transfusion include not only serologic ones, but those related to febrile and allergic complications, as well as infectious complications. The latter group includes diseases caused by infection with cytomegalovirus, bacteria, and a cadre of viruses including HIV and hepatitis. The clinical approach to thrombocytopenia in the ICU will be covered in some detail in an effort to review many of the conditions associated with recipient thrombocytopenia, including ITP, TTP, dilutional thrombocytopenia, DIC, surgery, HELLP syndrome, and drug-induced thrombocytopenia. Unfortunately the treatment approaches traditionally used are not always derived from evidence-based studies. This review covers many of these topics in an attempt to help physicians become better able to manage thrombocytopenia in the ICU and thus provide the best transfusion therapy for their patients.
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Affiliation(s)
- Jean-Pierre Gelinas
- Department of Anesthesiology and Critical Care, Yale University School of Medicine, Yale-New Haven Hospital, New Haven, CT
| | - Lanu V. Stoddart
- Blood Bank/Apheresis Service, Yale University School of Medicine, Yale-New Haven Hospital, New Haven, CT
| | - Edward L. Snyder
- Department of Laboratory Medicine, Yale University School of Medicine, Yale-New Haven Hospital, New Haven, CT.
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10
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Clinical Uses of Blood Components. Transfus Med 2016. [DOI: 10.1002/9781119236504.ch11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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11
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Affiliation(s)
- Paul Harrison
- Department of Haematology, 98, Chenies Mews, University College Hospital, London, WCIE 6HX, UK
| | - Carol Briggs
- Department of Haematology, 98, Chenies Mews, University College Hospital, London, WCIE 6HX, UK
| | - Sam Machin
- Department of Haematology, 98, Chenies Mews, University College Hospital, London, WCIE 6HX, UK
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Hussein E. Clinical and quality evaluation of apheresis vs random-donor platelet concentrates stored for 7 days. Transfus Med 2015; 25:20-6. [PMID: 25808050 DOI: 10.1111/tme.12187] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2014] [Revised: 11/18/2014] [Accepted: 03/08/2015] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND OBJECTIVES The clinical efficacy of different types of platelets remains under debate. We conducted a pilot study to prospectively evaluate the impact of subsequent storage on the in vitro quality and post-transfusion outcome of apheresis prepared platelets (APCs) vs random donor platelets (RDPs). MATERIALS AND METHODS We studied 30 units of APCs, and 30 units of RDPs. We performed assays on days 1, 3, 5 and 7, evaluating ADP aggregation, platelet count and pH. Fifteen thrombocytopenic patients with haematologic conditions were evaluated. Each patient received prophylactic transfusions of both components, and their post-transfusion platelet increments were compared. Twenty-five transfusions were apheresis prepared, and 35 transfusions were received as RDPs. None of the RDPs were leukoreduced. RESULTS The median platelet counts for APCs on days 1, 3, 5 and 7 were; 2070, 1990, 1680 and 1240 × 10(3) µL(-1) , respectively, and were; 1290, 850, 499 and 284 × 10(3) µL(-1) , respectively for RDPs. The pH of all units was more than 6·2. Both groups demonstrated a significant decrease of ADP aggregation after 3 days of storage (P < 0·05). However, APCs provided satisfactory increments for 90·9% of transfusions. On the sixth and seventh days of storage, APCs provided significantly higher platelet increments (18·7 × 10(3) µL(-1) ) compared with RDPs (3·20 × 10(3) µL(-1) ) (P < 0·05). Significantly longer transfusion intervals were also achieved with APCs (P < 0·05). CONCLUSION Although other variables may have confounded the results, subsequent storage of APCs appeared to provide higher increments with longer intervals of transfusion compared with RDPs. Future prospective studies are needed, adjusting for other possible confounding variables.
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Affiliation(s)
- E Hussein
- Clinical Pathology Department, Transfusion Medicine Division, Cairo University, Cairo, Egypt
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13
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Mauffrey C, Cuellar DO, Pieracci F, Hak DJ, Hammerberg EM, Stahel PF, Burlew CC, Moore EE. Strategies for the management of haemorrhage following pelvic fractures and associated trauma-induced coagulopathy. Bone Joint J 2014; 96-B:1143-54. [PMID: 25183582 DOI: 10.1302/0301-620x.96b9.33914] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Exsanguination is the second most common cause of death in patients who suffer severe trauma. The management of haemodynamically unstable high-energy pelvic injuries remains controversial, as there are no universally accepted guidelines to direct surgeons on the ideal use of pelvic packing or early angio-embolisation. Additionally, the optimal resuscitation strategy, which prevents or halts the progression of the trauma-induced coagulopathy, remains unknown. Although early and aggressive use of blood products in these patients appears to improve survival, over-enthusiastic resuscitative measures may not be the safest strategy. This paper provides an overview of the classification of pelvic injuries and the current evidence on best-practice management of high-energy pelvic fractures, including resuscitation, transfusion of blood components, monitoring of coagulopathy, and procedural interventions including pre-peritoneal pelvic packing, external fixation and angiographic embolisation.
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Affiliation(s)
- C Mauffrey
- Denver Health Medical Center, 655 Broadway, Suite 365 Denver, Colorado 80203, USA
| | - D O Cuellar
- Denver Health Medical Center, 655 Broadway, Suite 365 Denver, Colorado 80203, USA
| | - F Pieracci
- Denver Health Medical Center, 655 Broadway, Suite 365 Denver, Colorado 80203, USA
| | - D J Hak
- Denver Health Medical Center, 655 Broadway, Suite 365 Denver, Colorado 80203, USA
| | - E M Hammerberg
- Denver Health Medical Center, 655 Broadway, Suite 365 Denver, Colorado 80203, USA
| | - P F Stahel
- Denver Health Medical Center, 655 Broadway, Suite 365 Denver, Colorado 80203, USA
| | - C C Burlew
- Denver Health Medical Center, 655 Broadway, Suite 365 Denver, Colorado 80203, USA
| | - E E Moore
- Denver Health Medical Center, 655 Broadway, Suite 365 Denver, Colorado 80203, USA
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Rioux-Massé B, Cohn C, Lindgren B, Pulkrabek S, McCullough J. Utilization of cross-matched or HLA-matched platelets for patients refractory to platelet transfusion. Transfusion 2014; 54:3080-7. [PMID: 24916382 DOI: 10.1111/trf.12739] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 04/17/2014] [Accepted: 04/21/2014] [Indexed: 01/10/2023]
Abstract
BACKGROUND Use of cross matching or HLA matching for donor selection is the basis of managing patients refractory to platelet (PLT) transfusion. Because of changes in patient care, we evaluated the effect of cross matching and HLA matching in patients refractory to PLT transfusion. STUDY DESIGN AND METHODS We identified all patients who received either HLA-matched or cross-matched PLTs during a 3-year period at our medical center. Patient records were reviewed and laboratory data were collected. One- to 4-hour corrected count increments (CCIs) were calculated for transfusions given up to 72 hours before receiving these specialized units and the HLA-matched or cross-matched units themselves. RESULTS Thirty-two patients were identified who received a total of 354 PLT transfusions. Of these, 161 were from unselected apheresis, 152 were cross matched, and 41 were HLA selected. The median CCI for random-donor transfusions was 0 (range, 0 × 10(9)-10.5 × 10(9)/L), for cross-matched PLT transfusions 1.7 × 10(9)/L (0 × 10(9)-5.1 × 10(9)/L), and for HLA-matched transfusions 1.2 × 10(9)/L (0 × 10(9)-13.9 × 10(9)/L). Only 25 and 30% of cross-match-compatible or HLA-selected units, respectively, gave 1- to 4-hour CCIs of more than 5.0 × 10(9)/L compared to 12% of the transfusions from random donors. There were no significant differences in the 1- to 4-hour CCIs when comparing random units with HLA-selected or cross-match-compatible units. There was also no significant difference when comparing the HLA-matched and cross-match-compatible PLT units with each other. CONCLUSIONS The use of cross-match-compatible or HLA-matched units did not provide better increments in PLT count when compared to random nonselected units. Clinical factors may overpower immunologic matching.
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Konig G, Yazer MH, Waters JH. Stored platelet functionality is not decreased after warming with a fluid warmer. Anesth Analg 2013; 117:575-578. [PMID: 23921655 DOI: 10.1213/ane.0b013e31829cfdfa] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND Warming of IV-administered fluids and blood products is routinely performed in the operating room to help maintain normothermia. Current guidelines recommend against the warming of platelets (PLTs), although there is no evidence for this prohibition in the literature. Our goal in this pilot study was to determine whether the warming of stored PLTs had any effect on their function. METHODS Ten units of 3-day-old, PLT-rich plasma-derived whole blood PLTs were acquired from the transfusion service. A 5-mL aliquot was taken from each unit before warming (control samples). The remainder of the unit was then passed into a blood-warming device and held there for 2 minutes. Postwarming (warmed) PLT samples were then collected from the effluent end of the warming device. PLT aggregometry assays with adenosine diphosphate, collagen, and arachidonic acid as agonists were performed on the control and warmed samples. Thromboelastography tests were also performed on the control and warmed samples from 6 of the 10 PLT units. RESULTS The mean temperature of the control and warmed samples was 22.4°C ± 0.5°C and 37.8°C ± 2.3°C, respectively. There was no significant difference (all P ≥ 0.13) in any of the PLT aggregometry assays or in the maximum amplitude of the thromboelastography test between the control and the warmed samples. The observed mean of only 1 parameter decreased (PLT aggregometry with 5 μM adenosine diphosphate) by 5% (95% confidence interval, -115% to 105%). The maximum change observed was PLT aggregometry with arachidonic acid as agonist, which increased by 116% (95% confidence interval, -91% to 323%). CONCLUSION Although small in size, the results of this study do not support the prohibition against mechanical PLT warming. Studies of PLT activation after warming are also warranted.
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Affiliation(s)
- Gerhardt Konig
- Department of Anesthesiology, Magee Womens Hospital, 300 Halket St., Suite 3510, Pittsburgh, PA 15213.
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Beynon C, Scherer M, Jakobs M, Jung C, Sakowitz OW, Unterberg AW. Initial experiences with Multiplate® for rapid assessment of antiplatelet agent activity in neurosurgical emergencies. Clin Neurol Neurosurg 2013; 115:2003-8. [PMID: 23830497 DOI: 10.1016/j.clineuro.2013.06.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2013] [Revised: 04/26/2013] [Accepted: 06/09/2013] [Indexed: 10/26/2022]
Abstract
OBJECTIVE As the population ages, physicians encounter a growing number of patients who are treated with antiplatelet agents and present with severe conditions requiring urgent neurosurgical therapy. Standard laboratory investigations are insufficient to evaluate platelet activity and furthermore, it is difficult to evaluate effects of haemostatic measures on platelet function. In this article we report our initial experiences with the point-of-care device Multiplate® for assessment of platelet activity in neurosurgical emergencies on patients with a reported intake of antiplatelet medication. METHODS Multiplate® assessment of antiplatelet activity was carried out in 21 non-consecutive patients with a reported intake of antiplatelet medication (aspirin: n=21, clopidogrel: n=3, ticragrelor: n=1) and urgent admission to our hospital because of conditions such as intracranial haemorrhage requiring urgent neurosurgical therapy. Analysis was repeated in order to evaluate the effectiveness of haemostatic drugs and platelet concentrate transfusion on platelet activity in six patients. RESULTS No technical difficulties occurred and in all cases, results were obtained within 15 min. On admission, patients' arachidonic acid induced platelet activity was reduced by 44.4±33.5% (range: -79.7% to +44.3%) compared to the lower reference limit. Two patients had a normal platelet activity despite a reported intake of aspirin. Haemostatic measures significantly increased arachidonic acid induced platelet activity by 100±66% (p<0.005). CONCLUSION The Multiplate® device allowed rapid assessment of antiplatelet agent activity and evaluation of haemostatic measures on platelet activity. Further studies with larger patient numbers are needed, but this device may represent a valuable tool to improve treatment modalities in patients treated with antiplatelet medication and conditions requiring urgent neurosurgical therapy.
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Affiliation(s)
- Christopher Beynon
- Department of Neurosurgery, Heidelberg University Hospital, Heidelberg, Germany.
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Ko YJ, Kim H, Hur M, Choi SG, Moon HW, Yun YM, Hong SN. Establishment of reference interval for immature platelet fraction. Int J Lab Hematol 2013; 35:528-33. [PMID: 23286350 DOI: 10.1111/ijlh.12049] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Accepted: 11/28/2012] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Immature platelet fraction (IPF) is a parameter for reticulated platelets. A high percentage IPF (%-IPF) is indicative of consumptive or recovering thrombocytopenic disorders in contrast to a low %-IPF seen in aplastic states. Absolute IPF (A-IPF) specifically reflects the number of immature platelets in circulation. This study aimed to establish reliable reference intervals for %-IPF and A-IPF. METHODS Except outliers, platelet counts and IPF were determined in 2152 healthy individuals (1252 men and 900 women) and 133 umbilical cord blood from healthy full-term neonates using XE-2100 hematology analyzer (Sysmex, Kobe, Japan). The reference intervals for %-IPF and A-IPF were defined using nonparametrical percentile methods according to the Clinical and Laboratory Standard Institute (CLSI) guideline. RESULTS Platelets,%-IPF, and A-IPF all showed nonparametrical distributions. In total individuals, the reference intervals for %-IPF and A-IPF were 0.5-3.3% (0.5-3.1% in men; 0.5-3.4% in women) and 1.25-7.02 × 10(9) /L (1.30-6.80 × 10(9) /L in men; 1.21-7.15 × 10(9) /L in women), respectively. The reference intervals for %-IPF and A-IPF in umbilical cord blood were 0.7-3.8% and 1.93-9.7 × 10(9) /L, respectively. CONCLUSIONS This study provides the reference interval for IPF, including %-IPF and A-IPF, according to the CLSI guideline. These results could be used as fundamental data for clinical use as well as future researches.
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Affiliation(s)
- Y J Ko
- Departments of Laboratory Medicine and Internal Medicine, Konkuk University School of Medicine, Seoul, Korea
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Chan Wah Hak CML, Tan YO, Chan C. Coronary artery stenting in a patient with chronic immune thrombocytopenic purpura: a clinical conundrum. BMJ Case Rep 2012; 2012:bcr-02-2012-5802. [PMID: 23008362 DOI: 10.1136/bcr-02-2012-5802] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
A patient with long-standing immune thrombocytopenic purpura (ITP) would logically contradict antiplatelet use due to increased bleeding risk during coronary stenting. Coronary stenting using an endothelial progenitor cells (EPC) capture stents (Genous™) was used to successfully revascularise our patient using a transradial approach. The only complication was extensive superficial ecchymosis on the patient's forearm from antiplatelet use, which resolved spontaneously. To the best of our knowledge, this is the first case report of EPC capture stents in a chronic ITP patient.
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Beynon C, Hertle DN, Unterberg AW, Sakowitz OW. Clinical review: Traumatic brain injury in patients receiving antiplatelet medication. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2012; 16:228. [PMID: 22839302 PMCID: PMC3580675 DOI: 10.1186/cc11292] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
As the population ages, emergency physicians are confronted with a growing number of trauma patients receiving antithrombotic and antiplatelet medication prior to injury. In cases of traumatic brain injury, pre-injury treatment with anticoagulants has been associated with an increased risk of posttraumatic intracranial haemorrhage. Since high age itself is a well-recognised risk factor in traumatic brain injury, this population is at special risk for increased morbidity and mortality. The effects of antiplatelet medication on coagulation pathways in posttraumatic intracranial haemorrhage are not well understood, but available data suggest that the use of these agents increases the risk of an unfavourable outcome, especially in cases of severe traumatic brain injury. Standard laboratory investigations are insufficient to evaluate platelet activity, but new assays for monitoring platelet activity have been developed. Commonly used interventions to restore platelet activity include platelet transfusion and application of haemostatic drugs. Nevertheless, controlled clinical trials have not been carried out and, therefore, clinical practice guidelines are not available. In addition to the risks of the acute trauma, patients are at risk for cardiac events such as life-threatening stent thrombosis if antiplatelet therapy is withdrawn. In this review article, we summarize the pathophysiologic mechanisms of the most commonly used antiplatelet agents and analyse results of studies on the effects of this treatment on patients with traumatic brain injury. Additionally, we focus on opportunities to counteract antiplatelet effects in those patients as well as on considerations regarding the withdrawal of antiplatelet therapy. In those chronically ill patients, an interdisciplinary approach involving intensivists, neurosurgeons as well as cardiologists is often mandatory.
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Patel IJ, Davidson JC, Nikolic B, Salazar GM, Schwartzberg MS, Walker TG, Saad WA. Consensus guidelines for periprocedural management of coagulation status and hemostasis risk in percutaneous image-guided interventions. J Vasc Interv Radiol 2012; 23:727-36. [PMID: 22513394 DOI: 10.1016/j.jvir.2012.02.012] [Citation(s) in RCA: 411] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Revised: 02/22/2012] [Accepted: 02/22/2012] [Indexed: 12/12/2022] Open
Affiliation(s)
- Indravadan J Patel
- Department of Radiology, University Hospitals Case Medical Center, Cleveland, OH, USA
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Efficacy and safety of eltrombopag in Japanese patients with chronic liver disease and thrombocytopenia: a randomized, open-label, phase II study. J Gastroenterol 2012; 47:1342-51. [PMID: 22674141 PMCID: PMC3523116 DOI: 10.1007/s00535-012-0600-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2011] [Accepted: 04/10/2012] [Indexed: 02/06/2023]
Abstract
BACKGROUND Eltrombopag is an oral thrombopoietin receptor agonist that stimulates thrombopoiesis and shows higher exposure in East Asian patients than in non-Asian patients. We evaluated the pharmacokinetics, efficacy, and safety of eltrombopag in Japanese patients with thrombocytopenia associated with chronic liver disease (CLD). METHODS Thirty-eight patients with CLD and thrombocytopenia (platelets <50,000/μL) were enrolled in this phase II, open-label, dose-ranging study that consisted of 2 parts. In the first part, 12 patients received 12.5 mg of eltrombopag once daily for 2 weeks. After the evaluation of safety, 26 patients were randomly assigned to receive either 25 or 37.5 mg of eltrombopag once daily for 2 weeks in the second part. RESULTS Pharmacokinetics showed that the geometric means of the maximum plasma concentration (C(max)) and the area under the curve (AUC) in the 12.5 mg group were 3,413 ng/mL and 65,236 ng h/mL, respectively. At week 2, the mean increases from baseline in platelet counts were 24,800, 54,000, and 60,000/μL in the 12.5, 25, and 37.5 mg groups, respectively. The median platelet counts increased within 2 weeks of the beginning of administration in all groups, and remained at the same level throughout the 2-week post-treatment period in the 12.5 mg group, whereas the platelet counts peaked a week after the last treatment in both the 25 and 37.5 mg groups. Most adverse events reported were grade 1 or 2; 2 patients in the 37.5 mg group had drug-related serious adverse events. CONCLUSIONS Eltrombopag ameliorated thrombocytopenia in Japanese patients with CLD and thrombocytopenia. The recommended dose for these patients is 25 mg daily for 2 weeks.
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Clinical Uses of Blood Components. Transfus Med 2011. [DOI: 10.1002/9781444398748.ch11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Assessment of platelet transfusion for reversal of aspirin after traumatic brain injury. Surgery 2011; 150:836-43. [DOI: 10.1016/j.surg.2011.07.059] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Accepted: 07/12/2011] [Indexed: 11/20/2022]
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Chern JJ, Tsung AJ, Humphries W, Sawaya R, Lang FF. Clinical outcome of leukemia patients with intracranial hemorrhage. J Neurosurg 2011; 115:268-72. [DOI: 10.3171/2011.4.jns101784] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Object
Intracranial hemorrhage (ICH) is a frequent complication found in leukemia patients with thrombocytopenia. At the University of Texas MD Anderson Cancer Center, when a leukemia patient is found to have ICH, a platelet transfusion is generally recommended until 50,000/μl is reached. The authors examine the feasibility and outcome of their intervention strategy in this study.
Methods
Records were reviewed from 76 consecutive leukemia patients with newly diagnosed ICH at the University of Texas MD Anderson Cancer Center from January 1, 2007, to December 31, 2009. Variables of interest included age, platelet count at presentation, leukemia subtype, history of trauma, Glasgow Coma Scale score at presentation, whether the 50,000/μl goal was reached after transfusion, and whether the patient was a transfusion responder (platelet count increase > 2000/μl/unit transfused). Outcome parameters were mortality rates at 72 hours and 30 days and imaging-documented hemorrhage progression.
Results
Thrombocytopenia was prevalent at the time of presentation (68 of 76 patients had platelet levels < 50,000/μl at presentation). Despite an aggressive transfusion protocol, only 24 patients reached the 50,000/μl target after an average of 16 units of transfusion. Death due to ICH occurred in 15 patients within the first 72 hours (mortality rate 19.7%). Death correlated with the presenting Glasgow Coma Scale score (p = 0.0075) but not with other transfusion-related parameters. A significant mortality rate was again observed after 30 days (32.7%). The 30-day mortality rate, however, was largely attributable to non-ICH related causes and correlated with patient age (p = 0.032) and whether the patient was a transfusion responder (p = 0.022). Reaching and maintaining a platelet count > 50,000/μl did not positively correlate with the 30-day mortality rate (p = 0.392 and 0.475, respectively).
Conclusions
Platelet transfusion in the setting of ICH in leukemia patients is undoubtedly necessary, but whether the transfusion threshold should be 50,000/μl remains unclear. Factors other than thrombocytopenia likely contribute to the overall poor prognosis.
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Affiliation(s)
- Joshua J. Chern
- 1Department of Neurosurgery, Baylor College of Medicine, Houston, Texas
| | - Andrew J. Tsung
- 2Illinois Neurological Institute, University of Illinois College of Medicine at Peoria, Illinois; and
| | - William Humphries
- 1Department of Neurosurgery, Baylor College of Medicine, Houston, Texas
| | - Raymond Sawaya
- 1Department of Neurosurgery, Baylor College of Medicine, Houston, Texas
- 3The University of Texas MD Anderson Cancer Center, Houston, Texas
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[Periprocedural management of hemostasis risk in interventional radiology]. ACTA ACUST UNITED AC 2011; 92:659-70. [PMID: 21819908 DOI: 10.1016/j.jradio.2011.05.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2011] [Accepted: 05/16/2011] [Indexed: 11/20/2022]
Abstract
Given the increasing demand for interventional image-guided procedures, radiologists are increasingly sollicited by clinicians to participate in the management of patients prior to and after the interventional procedure, especially with regards to hemostasis. Therefore, radiologists should be familiar with the risk of procedure related hemorrhage. Based on consensus guidelines published by the Society of Interventional Radiology (SIR), the risk of hemorrhage for each interventional procedure will be classified. Recommendations for preprocedure testing based on the type of procedure planned will be reviewed. Finally, limitations of hemostasis parameters will be discussed along with management of anticoagulants and antiplatelet agents before the procedure.
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Jung H, Jeon HK, Kim HJ, Kim SH. Immature platelet fraction: establishment of a reference interval and diagnostic measure for thrombocytopenia. Korean J Lab Med 2011; 30:451-9. [PMID: 20890075 DOI: 10.3343/kjlm.2010.30.5.451] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Immature platelet fraction (IPF, %) is a measure of reticulated platelets (RPs), which represents the state of thrombopoiesis. The IPF is obtained from an automated hematology analyzer as one of the platelet parameters. This study was performed to establish reference intervals of IPF and its cut-off values for the differential diagnosis of thrombocytopenia. METHODS Blood samples from 2,039 healthy individuals (1,161 males, 878 females) were obtained to establish reference intervals. The patient group included patients with idiopathic thrombocytopenic purpura (ITP) (N=150) and aplastic anemia (AA) (N=51) with platelet counts of less than 100×10(9)/L. We evaluated the reliability of the IPF measurements, the reference intervals, and cut-off value for the diagnosis of ITP. RESULTS The reference intervals of IPF were 0.5-3.2% in males and 0.4-3.0% in females (95% confidence interval). The median IPF% of ITP and AA were 7.7% (range, 1.0-33.8%) and 3.5% (range, 0.6-12.9%), respectively. Statistical analysis revealed a significant difference between the IPF% of ITP and AA (P<0.0001). The cut-off value of IPF for differentiating ITP from AA was 7.3% with a sensitivity and specificity of 54.0% and 92.2%, respectively. CONCLUSIONS A rapid and inexpensive automated measurement of IPF can be integrated as a standard parameter to evaluate the thrombopoietic state of the bone marrow. This study determined the reference intervals of IPF from a large population of healthy individuals, including children. Further studies are needed to establish the clinical utility of IPF.
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Affiliation(s)
- Haiyoung Jung
- Department of Laboratory Medicine & Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Abstract
Platelet transfusions are a critical component of the supportive care for patients receiving intensive therapy for hematologic malignancies. The platelet count "triggering" prophylactic transfusion has decreased over the years, and studies comparing a prophylactic versus a therapeutic transfusion approach are in progress. The evidence supporting the need for platelet transfusions prior to different invasive procedures is reviewed. Lastly, studies evaluating the use of thrombopoietic stimulating agents to reduce hemorrhage and decrease the need for platelet transfusions are discussed. To date, there is no evidence that this approach is of clinical utility.
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Affiliation(s)
- Jason Valent
- Division of Hematology/Oncology, Karmanos Cancer Institute, Wayne State University, Detroit, MI 48201, USA.
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Oladipo O, Kennedy R, Shiels A, McAleer S. 'Pseudo Wine Glass' Radiological Appearance of Intracranial Haemorrhage as a Result of Chemotherapy-Induced Thrombocytopenia and Red Cell Sedimentation. Case Rep Oncol 2010; 3:406-409. [PMID: 21113351 PMCID: PMC2992429 DOI: 10.1159/000322283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The radiological features of intracranial haemorrhage are well described in the literature, but atypical appearances can sometimes develop. We report a case of chemotherapy-induced thrombocytopenia resulting in fatal intracranial haemorrhage in a man undergoing autologous peripheral stem cell transplantation. The CT showed an unusual appearance, with separation of blood products and fluid within the haemorrhage leading to a wine-glass-shaped outline in the image. This case draws attention to this uncommon radiological finding and emphasises the risks of allosensitisation following chemotherapy and peripheral stem cell transplantation.
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Affiliation(s)
- O Oladipo
- Department of Medical Oncology, Belfast City Hospital, Belfast, UK
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Affiliation(s)
- D C Buhrkuhl
- Haematology Department, Blood and Cancer Centre, Wellington Hospital, Capital and Coast District Health Board, Wellington, New Zealand.
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Sahaya K, Patel NC. Venous sinus thrombosis and consumptive coagulopathy: a role for heparin? Pediatr Neurol 2010; 43:225-7. [PMID: 20691949 DOI: 10.1016/j.pediatrneurol.2010.04.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2010] [Revised: 03/31/2010] [Accepted: 04/26/2010] [Indexed: 11/18/2022]
Abstract
Cerebral venous sinus thrombosis is a relatively rare but serious condition, more commonly affecting children and pregnant women. It can be precipitated by dehydration. Despite the frequent coexistence of hemorrhage in venous infarcts of patients, clinical trials in adults recommended the use of anticoagulation. No randomized, clinical trials exist in the pediatric age group. Rarely, consumptive coagulopathy is reported to coexist with cerebral venous sinus thrombosis. We report on a child with venous sinus thrombosis and consumptive coagulopathy developing after routine tonsillectomy and its successful management with anticoagulation.
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Affiliation(s)
- Kinshuk Sahaya
- Department of Neurology, University of Missouri-Columbia, Columbia, Missouri 65212, USA.
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Rossaint R, Bouillon B, Cerny V, Coats TJ, Duranteau J, Fernández-Mondéjar E, Hunt BJ, Komadina R, Nardi G, Neugebauer E, Ozier Y, Riddez L, Schultz A, Stahel PF, Vincent JL, Spahn DR. Management of bleeding following major trauma: an updated European guideline. Crit Care 2010; 14:R52. [PMID: 20370902 PMCID: PMC2887168 DOI: 10.1186/cc8943] [Citation(s) in RCA: 468] [Impact Index Per Article: 33.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2010] [Revised: 03/23/2010] [Accepted: 04/06/2010] [Indexed: 12/18/2022] Open
Abstract
INTRODUCTION Evidence-based recommendations are needed to guide the acute management of the bleeding trauma patient, which when implemented may improve patient outcomes. METHODS The multidisciplinary Task Force for Advanced Bleeding Care in Trauma was formed in 2005 with the aim of developing a guideline for the management of bleeding following severe injury. This document presents an updated version of the guideline published by the group in 2007. Recommendations were formulated using a nominal group process, the Grading of Recommendations Assessment, Development and Evaluation (GRADE) hierarchy of evidence and based on a systematic review of published literature. RESULTS Key changes encompassed in this version of the guideline include new recommendations on coagulation support and monitoring and the appropriate use of local haemostatic measures, tourniquets, calcium and desmopressin in the bleeding trauma patient. The remaining recommendations have been reevaluated and graded based on literature published since the last edition of the guideline. Consideration was also given to changes in clinical practice that have taken place during this time period as a result of both new evidence and changes in the general availability of relevant agents and technologies. CONCLUSIONS This guideline provides an evidence-based multidisciplinary approach to the management of critically injured bleeding trauma patients.
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Affiliation(s)
- Rolf Rossaint
- Department of Anaesthesiology, University Hospital Aachen, RWTH Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany
| | - Bertil Bouillon
- Department of Trauma and Orthopedic Surgery, University of Witten/Herdecke, Hospital Cologne Merheim, Ostmerheimerstrasse 200, 51109 Cologne, Germany
| | - Vladimir Cerny
- Faculty of Medicine in Hradec Králové, Department of Anaesthesiology and Intensive Care Medicine, University Hospital Hradec Králové, 50005 Hradec Králové, Czech Republic
| | - Timothy J Coats
- Accident and Emergency Department, University of Leicester, Infirmary Square, Leicester LE1 5WW, UK
| | - Jacques Duranteau
- Department of Anaesthesia and Intensive Care, University of Paris XI, Faculté de Médecine Paris-Sud, 63 rue Gabriel Péri, 94276 Le Kremlin-Bicêtre, France
| | - Enrique Fernández-Mondéjar
- Department of Emergency and Critical Care Medicine, University Hospital Virgen de las Nieves, ctra de Jaén s/n, 18013 Granada, Spain
| | - Beverley J Hunt
- Guy's & St Thomas' Foundation Trust, Westminster Bridge Road, London, SE1 7EH, UK
| | - Radko Komadina
- Department of Traumatology, General and Teaching Hospital Celje, 3000 Celje, Slovenia
| | - Giuseppe Nardi
- Shock and Trauma Center, S. Camillo Hospital, I-00152 Rome, Italy
| | - Edmund Neugebauer
- Institute for Research in Operative Medicine (IFOM), Ostmerheimerstrasse 200, 51109 Cologne, Germany
| | - Yves Ozier
- Department of Anaesthesia and Intensive Care, Université Paris Descartes, AP-HP Hopital Cochin, Paris, France
| | - Louis Riddez
- Department of Surgery and Trauma, Karolinska University Hospital, 171 76 Solna, Sweden
| | - Arthur Schultz
- Ludwig-Boltzmann-Institute for Experimental and Clinical Traumatology and Lorenz Boehler Trauma Center, Donaueschingenstrasse 13, 1200 Vienna, Austria
| | - Philip F Stahel
- Department of Orthopaedic Surgery and Department of Neurosurgery, University of Colorado Denver School of Medicine, Denver Health Medical Center, 777 Bannock Street, Denver, CO 80204, USA
| | - Jean-Louis Vincent
- Department of Intensive Care, Erasme University Hospital, Université Libre de Bruxelles, Route de Lennik 808, 1070 Brussels, Belgium
| | - Donat R Spahn
- Institute of Anesthesiology, University Hospital Zurich, 8091 Zurich, Switzerland
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Vamvakas EC, Blajchman MA. Blood still kills: six strategies to further reduce allogeneic blood transfusion-related mortality. Transfus Med Rev 2010; 24:77-124. [PMID: 20303034 PMCID: PMC7126657 DOI: 10.1016/j.tmrv.2009.11.001] [Citation(s) in RCA: 104] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
After reviewing the relative frequency of the causes of allogeneic blood transfusion-related mortality in the United States today, we present 6 possible strategies for further reducing such transfusion-related mortality. These are (1) avoidance of unnecessary transfusions through the use of evidence-based transfusion guidelines, to reduce potentially fatal (infectious as well as noninfectious) transfusion complications; (2) reduction in the risk of transfusion-related acute lung injury in recipients of platelet transfusions through the use of single-donor platelets collected from male donors, or female donors without a history of pregnancy or who have been shown not to have white blood cell (WBC) antibodies; (3) prevention of hemolytic transfusion reactions through the augmentation of patient identification procedures by the addition of information technologies, as well as through the prevention of additional red blood cell alloantibody formation in patients who are likely to need multiple transfusions in the future; (4) avoidance of pooled blood products (such as pooled whole blood-derived platelets) to reduce the risk of transmission of emerging transfusion-transmitted infections (TTIs) and the residual risk from known TTIs (especially transfusion-associated sepsis [TAS]); (5) WBC reduction of cellular blood components administered in cardiac surgery to prevent the poorly understood increased mortality seen in cardiac surgery patients in association with the receipt of non-WBC-reduced (compared with WBC-reduced) transfusion; and (6) pathogen reduction of platelet and plasma components to prevent the transfusion transmission of most emerging, potentially fatal TTIs and the residual risk of known TTIs (especially TAS).
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Affiliation(s)
- Eleftherios C Vamvakas
- Department of Pathology and Laboratory Medicine, Cedars-Sinai Medical Center, Los Angeles, CA, USA.
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Shehata N, Tinmouth A, Naglie G, Freedman J, Wilson K. ABO-identical versus nonidentical platelet transfusion: a systematic review. Transfusion 2009; 49:2442-53. [DOI: 10.1111/j.1537-2995.2009.02273.x] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Fernández-Mondéjar E, Pino-Sánchez F, Tuero León G, Rodríguez Bolaños S, Castán Ribas P. [Management of hemorrhage in patients with abdominal trauma: application of the European Guidelines for the management of bleeding following major trauma]. Cir Esp 2009; 85 Suppl 1:29-34. [PMID: 19589407 DOI: 10.1016/s0009-739x(09)71625-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In patients with traumatic intraabdominal hemorrhage, urgent decisions must be made. Resuscitation measures must often be simultaneously combined with diagnostic actions and measures to control the source of the bleeding. Hemorrhages are usually complicated by coagulation disorders and the presence of acidosis and hypothermia. In these conditions, emergency measures are required that usually involve various specialists. However, given the paucity of the scientific evidence in this field, the intervention protocols differ from one center to another. The European Guidelines for the management of bleeding following major trauma has recently been published. These guidelines review aspects such as evaluation and initial management of bleeding, localization and control of the source of bleeding and replacement of blood products. In addition, recommendations based on the best available evidence to 2008 are made. This review describes the basic aspects of traumatic intraabdominal hemorrhage.
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Affiliation(s)
- Enrique Fernández-Mondéjar
- Unidad de Cuidados Intensivos, Hospital de Traumatología, Hospital Universitario Virgen de las Nieves, Granada, España.
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Choi S, Brull R. Neuraxial Techniques in Obstetric and Non-Obstetric Patients with Common Bleeding Diatheses. Anesth Analg 2009; 109:648-60. [DOI: 10.1213/ane.0b013e3181ac13d1] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Montero AJ, Estrov Z, Freireich EJ, Khouri IF, Koller CA, Kurzrock R. Phase II study of low-dose interleukin-11 in patients with myelodysplastic syndrome. Leuk Lymphoma 2009; 47:2049-54. [PMID: 17071475 DOI: 10.1080/10428190600758058] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Severe thrombocytopenia places patients with myelodysplastic syndrome (MDS) at risk of serious hemorrhage. Currently, therapeutic options are limited to platelet transfusions. The only commercially available growth factor that increases platelet counts is interleukin-11 (IL-11). We report the results of a phase II trial to more accurately assess the clinical response and toxicity data for low-dose IL-11 (10 microg/kg/day) in patients with MDS. In this study, nine of 32 assessable patients (28%) demonstrated increases in their platelet counts after treatment. Of these, five were considered major platelet responses (15%), as defined by World Health Organization criteria. Four patients had minor platelet responses (13%). The median duration of platelet response was 9 months. Low-dose IL-11 was well tolerated, with no observed grade 4 toxicities. Our study provides additional clinical evidence that chronic administration of IL-11, at low doses, can raise platelet counts and reduce platelet transfusion requirements in a subset of patients with MDS.
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Affiliation(s)
- Alberto J Montero
- Hematology-Oncology Division, Hollings Cancer Center, Medical University of South Carolina, Charleston, South Carolina, USA
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39
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Malloy PC, Grassi CJ, Kundu S, Gervais DA, Miller DL, Osnis RB, Postoak DW, Rajan DK, Sacks D, Schwartzberg MS, Zuckerman DA, Cardella JF. Consensus Guidelines for Periprocedural Management of Coagulation Status and Hemostasis Risk in Percutaneous Image-guided Interventions. J Vasc Interv Radiol 2009; 20:S240-9. [DOI: 10.1016/j.jvir.2008.11.027] [Citation(s) in RCA: 158] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2008] [Accepted: 11/24/2008] [Indexed: 01/27/2023] Open
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Trabuio E, Valverde S, Antico F, Manoni F, Gessoni G. Performance of automated platelet quantification using different analysers in comparison with an immunological reference method in thrombocytopenic patients. BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2009; 7:43-8. [PMID: 19290080 PMCID: PMC2652236 DOI: 10.2450/2008.0039-08] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/31/2008] [Accepted: 10/27/2008] [Indexed: 11/21/2022]
Abstract
BACKGROUND Rapidly available and accurate platelet counts play an important role in the evaluation of haemorrhagic status and in assessing the need for platelet transfusions. We, therefore, evaluated platelet counting performance of haematology analysers using optical, impedance and immunological methods in thrombocytopenic patients. MATERIALS AND METHODS We considered 99 patients with a platelet (plt) count under 50 x 10(9) plt/L. We compared the platelet counts obtained using ADVIA 2120 (optical method), Cell-Dyn Sapphire (optical, impedance and immunological methods with CD61) and a reference, double staining (CD41+CD61) immunological method. RESULTS The platelet counts of all the considered methods showed good correlation with those of the reference method, despite an overestimation in platelet quantification. The degree of inaccuracy was greater for platelet counts under 20 x10(9) plt/L. CONCLUSIONS Clinicians who use platelet thresholds below 20 x10(9) plt/L for making clinical decisions must be aware of the limitations in precision and accuracy of cell counters at this level of platelet count. Inaccurate counts of low platelet numbers could create problems if attempts are made to reduce the threshold below 20 x 10(9) plt/L.
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Affiliation(s)
| | - Sara Valverde
- Servizio di Immunoematologia e Trasfusionale, A-ULS 14 Chioggia, Italia
| | | | - Fabio Manoni
- Laboratorio di Patologia Clinica, A-ULS 14 Chioggia
| | - Gianluca Gessoni
- Servizio di Immunoematologia e Trasfusionale, A-ULS 14 Chioggia, Italia
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41
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Pereira J. Control of bleeding in cancer. Cancer Treat Res 2009; 148:305-326. [PMID: 19377932 DOI: 10.1007/978-0-387-79962-9_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Affiliation(s)
- Jaime Pereira
- Department of Hematology-Oncology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.
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43
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Lachant NA. Hemorrhagic and Thrombotic Disorders. Crit Care Med 2008. [DOI: 10.1016/b978-032304841-5.50081-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Nevo S, Fuller AK, Zahurak ML, Hartley E, Borinsky ME, Vogelsang GB. Profound thrombocytopenia and survival of hematopoietic stem cell transplant patients without clinically significant bleeding, using prophylactic platelet transfusion triggers of 10 x 10(9) or 20 x 10(9) per L. Transfusion 2007; 47:1700-9. [PMID: 17725737 DOI: 10.1111/j.1537-2995.2007.01345.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND A trigger of 10 x 10(9) per L for prophylactic platelet (PLT) transfusions is generally recommended for stable thrombocytopenic patients who receive chemotherapy, based on studies showing similar incidence, severity, and fatality of bleeding compared with the 20 x 10(9) per L trigger. The outcome of thrombocytopenic nonbleeding patients has not been well described. This retrospective analysis evaluates thrombocytopenia and survival of 381 hematopoietic stem cell transplant (HSCT) patients without clinically significant bleeding, with 10 x 10(9) and 20 x 10(9) per L prophylactic triggers. STUDY DESIGN AND METHODS A total of 170 patients who received prophylactic PLT transfusions at 20 x 10(9) per L (1997-1998, SP1) and 211 patients who had prophylaxis at 10 x 10(9) per L (1999-2001, SP2) were identified as nonbleeding patients. PLT counts and clinical complications were assessed within 100 days from HSCT. RESULTS PLT counts less than or equal to 10 x 10(9) per L were found in 69.2 percent of patients in SP2 and 38.3 percent in SP1 (p < 0.001). Profound thrombocytopenia (4+ PLT counts <or=10 x 10(9)/L) was found in 19.0 percent of patients in SP2 and 7.0 percent in SP1 (p = 0.001). Patients with profound thrombocytopenia had significantly increased early mortality (odds ratio [OR], 3.18; 95% confidence interval [CI], 1.25-8.07) and significantly reduced overall survival (hazard ratio [HR], 1.95; 95% CI, 1.28-2.97) compared to patients with 0 to 3 PLT counts less than or equal to 10 x 10(9) per L. The association of profound thrombocytopenia with early mortality was more notable in SP2. CONCLUSION The 10 x 10(9) per L transfusion trigger is associated with significantly greater exposure to low PLT counts. Nonbleeding patients with profound thrombocytopenia were at significantly greater risk of dying compared with nonthrombocytopenic patients. These results suggest that safety of the 10 x 10(9) per L trigger should be more thoroughly evaluated.
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Affiliation(s)
- Shoshan Nevo
- Johns Hopkins University, Baltimore, Maryland, USA.
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45
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Nevo S, Fuller AK, Hartley E, Borinsky ME, Vogelsang GB. Acute bleeding complications in patients after hematopoietic stem cell transplantation with prophylactic platelet transfusion triggers of 10�נ109and 20�נ109per L. Transfusion 2007; 47:801-12. [PMID: 17465944 DOI: 10.1111/j.1537-2995.2007.01193.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Prophylactic platelet (PLT) transfusions are given as a standard care in patients with hematologic malignancies undergoing hematopoietic stem cell transplantation (HSCT). This retrospective analysis evaluates utilization of blood transfusions, risk of bleeding, and survival in 480 HSCT patients at 10 x 10(9) and 20 x 10(9) per L prophylactic trigger levels. STUDY DESIGN AND METHODS A total of 224 patients received prophylactic PLT transfusions at 20 x 10(9) per L threshold (1997-1998, SP1); 256 patients had prophylaxis at 10 x 10(9) per L (1999-2001, SP2). Bleeding scores were assigned daily. RESULTS A slight reduction in PLT transfusions per patient in SP2 compared with SP1 was not statistically significant (odds ratio, 0.82; 95% confidence interval, 0.51-1.33; p = 0.416), yet a significantly higher proportion of patients in SP2 had PLT counts less than or equal to 10 x 10(9) per L compared to SP1 (p < 0.001). In patients who bled, however, there was no excess exposure to low PLT counts before bleeding started. A substantial number of patients who bled received PLT transfusions above the goal before bleeding started (82.9% in SP2, 41.5% in SP1) because of medical complications that associated with increased risk of bleeding. Bleeding incidence was similar in both study periods (21.9% in SP1, 16.4% in SP2; p = 0.526). Bleeding was significantly associated with reduced survival in both study periods. CONCLUSIONS Patients who bled were usually placed on a higher threshold before the onset of their major bleeding event and were not exposed to additional risk of bleeding from thrombocytopenia. Similarity in bleeding incidence between study periods appears to associate with adjustments to high-risk conditions and may not reflect consequences of the lower transfusion threshold.
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Affiliation(s)
- Shoshan Nevo
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Bunting Blaustein Cancer Research Building, Baltimore, Maryland, USA.
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Abstract
The four main procedures for platelet counting are: manual phase contrast microscopy, impedance, optical light scatter/fluorescence and flow cytometry. Early methods to enumerate platelets were inaccurate and irreproducible. The manual count is still recognized as the gold standard or reference method, and until very recently the calibration of platelet counts by the manufacturers of automated cell counters and quality control material was performed by this method. However, it is time-consuming and results in high levels of imprecision. The introduction of automated full blood counters using impedance technology resulted in a dramatic improvement in precision. However, impedance counts still have limitations as cell size analysis cannot discriminate platelets from other similar-sized particles. More recently, light scatter or fluorescence methods have been introduced for automated platelet counting, but there are still occasional cases where an accurate platelet count remains a challenge. Thus, there has been interest in the development of an improved reference procedure to enable optimization of automated platelet counting. This method utilizes monoclonal antibodies to platelet cell surface antigens conjugated to a suitable fluorophore. This permits the possible implementation of a new reference method to calibrate cell counters, assign values to calibrators, and to obtain a direct platelet count on a variety of pathological samples. In future, analysers may introduce additional platelet parameters; a reliable method to quantify immature or reticulated platelets would be useful.
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Affiliation(s)
- C Briggs
- Department of Haematology, University College London Hospitals, London, UK
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47
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Platelet Storage and Transfusion. Platelets 2007. [DOI: 10.1016/b978-012369367-9/50831-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Spahn DR, Cerny V, Coats TJ, Duranteau J, Fernández-Mondéjar E, Gordini G, Stahel PF, Hunt BJ, Komadina R, Neugebauer E, Ozier Y, Riddez L, Schultz A, Vincent JL, Rossaint R. Management of bleeding following major trauma: a European guideline. Crit Care 2007; 11:R17. [PMID: 17298665 PMCID: PMC2151863 DOI: 10.1186/cc5686] [Citation(s) in RCA: 303] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2006] [Revised: 01/08/2007] [Accepted: 02/13/2007] [Indexed: 12/26/2022] Open
Abstract
INTRODUCTION Evidence-based recommendations can be made with respect to many aspects of the acute management of the bleeding trauma patient, which when implemented may lead to improved patient outcomes. METHODS The multidisciplinary Task Force for Advanced Bleeding Care in Trauma was formed in 2005 with the aim of developing guidelines for the management of bleeding following severe injury. Recommendations were formulated using a nominal group process and the GRADE (Grading of Recommendations Assessment, Development, and Evaluation) hierarchy of evidence and were based on a systematic review of published literature. RESULTS Key recommendations include the following: The time elapsed between injury and operation should be minimised for patients in need of urgent surgical bleeding control, and patients presenting with haemorrhagic shock and an identified source of bleeding should undergo immediate surgical bleeding control unless initial resuscitation measures are successful. A damage control surgical approach is essential in the severely injured patient. Pelvic ring disruptions should be closed and stabilised, followed by appropriate angiographic embolisation or surgical bleeding control, including packing. Patients presenting with haemorrhagic shock and an unidentified source of bleeding should undergo immediate further assessment as appropriate using focused sonography, computed tomography, serum lactate, and/or base deficit measurements. This guideline also reviews appropriate physiological targets and suggested use and dosing of blood products, pharmacological agents, and coagulation factor replacement in the bleeding trauma patient. CONCLUSION A multidisciplinary approach to the management of the bleeding trauma patient will help create circumstances in which optimal care can be provided. By their very nature, these guidelines reflect the current state-of-the-art and will need to be updated and revised as important new evidence becomes available.
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Affiliation(s)
- Donat R Spahn
- Department of Anesthesiology, University Hospital Zurich, Rämistrasse 100, 8091 Zurich, Switzerland
| | - Vladimir Cerny
- Charles University in Prague, Faculty of Medicine in Hradec Králové, Department of Anaesthesiology and Intensive Care Medicine, University Hospital Hradec Králové, Sokolska 581, 50005 Hradec Králové, Czech Republic
| | - Timothy J Coats
- Leicester Royal Infirmary, Accident and Emergency Department, Infirmary Square, Leicester LE1 5WW, UK
| | - Jacques Duranteau
- Department of Anaesthesia and Intensive Care, University of Paris XI Faculté de Médecine Paris-Sud, 63 rue Gabriel Péri, 94276 Le Kremlin-Bicêtre, France
| | - Enrique Fernández-Mondéjar
- Department of Emergency and Critical Care Medicine, University Hospital Virgen de las Nieves, ctra de Jaén s/n, 18013 Granada, Spain
| | - Giovanni Gordini
- Department of Anaesthesia and Intensive Care, Ospedale Maggiore, Largo Nigrisoli 2, 40100 Bologna, Italy
| | - Philip F Stahel
- Department of Orthopaedic Surgery, Denver Health Medical Center, University of Colorado Medical School, 777 Bannock Street, Denver, CO 80204, USA
| | - Beverley J Hunt
- Departments of Haematology, Pathology and Rheumatology, Guy's & St Thomas' Foundation Trust, Lambeth Palace Road, London SE1 7EH, UK
| | - Radko Komadina
- Department of Traumatology, General and Teaching Hospital Celje, 3000 Celje, Slovenia
| | - Edmund Neugebauer
- Institute for Research in Operative Medicine, University of Witten/Herdecke, Ostmerheimerstrasse 200, 51109 Köln (Merheim), Germany
| | - Yves Ozier
- Department of Anaesthesia and Intensive Care, Université René Descartes Paris 5, AP-HP, Hopital Cochin, 27 rue du Fbg Saint-Jacques, 75014 Paris, France
| | - Louis Riddez
- Department of Surgery and Trauma, Karolinska University Hospital, 171 76 Solna, Sweden
| | - Arthur Schultz
- Ludwig-Boltzmann-Institute for Experimental and Clinical Traumatology, Donaueschingenstrasse 13, 1200 Vienna, Austria
| | - Jean-Louis Vincent
- Department of Intensive Care, Erasme Hospital, University of Brussels, Belgium, route de Lennik 808, 1070 Brussels, Belgium
| | - Rolf Rossaint
- Department of Anaesthesiology, University Hospital Aachen, Pauwelsstraße 30, 52074 Aachen, Germany
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Bowles KM, Bloxham DM, Perry DJ, Baglin TP. Discrepancy between impedance and immunofluorescence platelet counting has implications for clinical decision making in patients with idiopathic thrombocytopenia purpura. Br J Haematol 2006; 134:320-2. [PMID: 16848774 DOI: 10.1111/j.1365-2141.2006.06165.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This study investigated whether differences occur between the impedance and immunofluorescence methods for platelet quantification in idiopathic thrombocytopenia purpura (ITP). Immunofluorescence gave a platelet count >50% higher than the impedance test in 9/35 (26%) patients, of which 4/35 (11%) were >100% higher. The clinical severity of thrombocytopenia was changed as a result of the immunofluorescence test in 14/35 (40%) patients. Neither mean platelet volume nor platelet distribution width predicted impedance/immunofluorescence method discrepancy. It is suggested that immunofluorescence platelet counts should be performed on all ITP patients when the implementation of a therapeutic or diagnostic intervention is being considered.
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