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Wagner A, Wostrack M, Hartz F, Heim J, Hameister E, Hildebrandt M, Meyer B, Winter C. The role of extended coagulation screening in adult cranial neurosurgery. Brain Spine 2023; 3:101756. [PMID: 37383462 PMCID: PMC10293229 DOI: 10.1016/j.bas.2023.101756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 04/23/2023] [Accepted: 05/10/2023] [Indexed: 06/30/2023]
Abstract
Introduction Postoperative hemorrhage after adult cranial neurosurgery is a serious complication with substantial morbidity and mortality. Research question We investigated if an extended preoperative screening and an early treatment of previously undetected coagulopathies may decrease the risk of postoperative hemorrhage. Methods A prospective study cohort of patients undergoing elective cranial surgery and receiving the extended coagulatory work-up were compared to a propensity matched historical control cohort. The extended work-up included a standardized questionnaire on the patient's bleeding history as well as coagulatory tests of Factor XIII, von-Willebrand-Factor and PFA-100®. Deficiencies were substituted perioperatively. The primary outcome was determined as the surgical revision rate due to postoperative hemorrhage. Results The study cohort and the control cohort included 197 cases each, without any significant difference in the preoperative intake of anticoagulant medication (p = .546). Most common interventions were resections of malignant tumors (41%), benign tumors (27%) and neurovascular surgeries (9%) in both cohorts. Imaging revealed postoperative hemorrhage in 7 cases (3.6%) in the study cohort and 18 cases (9.1%) in the control cohort (p = .023). Of these, revision surgeries were significantly more common in the control cohort with 14 cases (9.1%) compared to 5 cases (2.5%) in the study cohort (p = .034). Differences in mean intraoperative blood loss were not significant with 528 ml in the study cohort and 486 ml in the control cohort (p = .376). Conclusion Preoperative extended coagulatory screening may allow for revealing previously undiagnosed coagulopathies with subsequent preoperative substitution and thereby reduction of risk for postoperative hemorrhage in adult cranial neurosurgery.
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Affiliation(s)
- Arthur Wagner
- Department of Neurosurgery, Technical University Munich School of Medicine, Munich, Germany
| | - Maria Wostrack
- Department of Neurosurgery, Technical University Munich School of Medicine, Munich, Germany
| | - Frederik Hartz
- Department of Neurosurgery, Technical University Munich School of Medicine, Munich, Germany
| | - Johannes Heim
- Department of Neurosurgery, Technical University Munich School of Medicine, Munich, Germany
| | - Erik Hameister
- Institute of Clinical Chemistry and Pathobiochemistry, Technical University Munich School of Medicine, Munich, Germany
| | - Martin Hildebrandt
- Institute of Clinical Chemistry and Pathobiochemistry, Technical University Munich School of Medicine, Munich, Germany
| | - Bernhard Meyer
- Department of Neurosurgery, Technical University Munich School of Medicine, Munich, Germany
| | - Christof Winter
- Institute of Clinical Chemistry and Pathobiochemistry, Technical University Munich School of Medicine, Munich, Germany
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2
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Lubnin AY, Israelyan LA, Moshkin AV. [Hemostatic disorders in neurosurgical patients: diagnostics and correction]. Zh Vopr Neirokhir Im N N Burdenko 2023; 87:98-110. [PMID: 37011335 DOI: 10.17116/neiro20238702198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Abstract
The authors analyzed the main causes of perioperative hemostatic disorders in neurosurgical patients. The problem of preoperative hemostatic screening, intraoperative and postoperative factors contributing to hemostatic disorders are considered. The authors also discuss the methods for correction of hemostatic disorders.
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Affiliation(s)
- A Yu Lubnin
- Burdenko Neurosurgical Center, Moscow, Russia
| | | | - A V Moshkin
- Burdenko Neurosurgical Center, Moscow, Russia
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3
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Stahl F, Rühl H, Goldmann G, Strieth S, Send T. [Perioperative management of coagulation in otorhinolaryngologic surgery]. HNO 2022; 70:705-714. [PMID: 35976387 DOI: 10.1007/s00106-022-01201-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/07/2022] [Indexed: 11/25/2022]
Abstract
Considering the increasing number of patients suffering from drug-induced coagulation disorders caused by antiplatelet or anticoagulant therapy, the right balance between minimizing the risk of bleeding and the risk of a venous thrombosis or embolism during otorhinolaryngologic (ORL) surgery is becoming increasingly important. According to a recent study, the highest risk of intraoperative bleeding in ORL surgery is associated with transoral tumor surgery, tonsillectomy, thyroidectomy, and glomus tumor surgery. The risk of venous thrombosis or embolism during ORL surgery is estimated to be 1%, and increases to 6% among tumor patients. Currently, there is no general recommendation for perioperative hemostatic management because of the limited available data. In the majority of patients who continue antiplatelet therapy with acetylsalicylic acid (ASS) to prevent thromboembolic events, the perioperative bleeding risk is considered to be acceptable. For patients with dual antiplatelet therapy, surgical procedures should be only performed after adaption of the medication.
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Affiliation(s)
- F Stahl
- Klinik und Poliklinik für Hals-Nasen-Ohren-Heilkunde, Klinik für experimentelle Hämatologie und Transfusionsmedizin, Universitätsklinikum Bonn (UKB), Venusberg-Campus 1, 53127, Bonn, Deutschland.
| | - H Rühl
- Klinik und Poliklinik für Hals-Nasen-Ohren-Heilkunde, Klinik für experimentelle Hämatologie und Transfusionsmedizin, Universitätsklinikum Bonn (UKB), Venusberg-Campus 1, 53127, Bonn, Deutschland
| | - G Goldmann
- Klinik und Poliklinik für Hals-Nasen-Ohren-Heilkunde, Klinik für experimentelle Hämatologie und Transfusionsmedizin, Universitätsklinikum Bonn (UKB), Venusberg-Campus 1, 53127, Bonn, Deutschland
| | - S Strieth
- Klinik und Poliklinik für Hals-Nasen-Ohren-Heilkunde, Klinik für experimentelle Hämatologie und Transfusionsmedizin, Universitätsklinikum Bonn (UKB), Venusberg-Campus 1, 53127, Bonn, Deutschland
| | - T Send
- Klinik und Poliklinik für Hals-Nasen-Ohren-Heilkunde, Klinik für experimentelle Hämatologie und Transfusionsmedizin, Universitätsklinikum Bonn (UKB), Venusberg-Campus 1, 53127, Bonn, Deutschland
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Favaloro EJ, Pasalic L, Lippi G. Towards 50 years of platelet function analyser (PFA) testing. Clin Chem Lab Med 2022; 61:851-860. [PMID: 35859143 DOI: 10.1515/cclm-2022-0666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Accepted: 07/11/2022] [Indexed: 11/15/2022]
Abstract
The platelet function analyser (PFA) is a prevalent platelet function screening instrument, and comes in two models-the original PFA-100 and the contemporary PFA-200. The instruments have 'identical' output, being a 'closure time' (CT). Moreover, normal reference ranges provided by the manufacturer, for the specific test cartridges, are the same for both models. There are three different types of test cartridge: collagen/epinephrine (C/Epi), collagen/adenosine diphosphate (C/ADP), and "Innovance PFA P2Y" (only available in certain geographical locations). The PFA-100 was released in the mid 1990s, and so is approaching 50 years of age. The PFA-200, released in some locations in the mid 2010s, is destined to eventually replace the PFA-100, but is not yet available in the USA. The test system is highly sensitive to von Willebrand disease (VWD; C/Epi and C/ADP) and to aspirin therapy (C/Epi only), but only has moderate sensitivity to defects in platelet function and/or deficiencies in platelet number. Accordingly, recommendations for use for screening platelet function vary according to user experience. Some workers have alternatively used the PFA to assess thrombosis risk or pre-operative bleeding risk. In this review, we provide an overview of the history of PFA, and summarise its current clinical utility.
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Affiliation(s)
- Emmanuel J Favaloro
- Haematology, Institute of Clinical Pathology and Medical Research (ICPMR), NSW Health Pathology, Westmead Hospital, Westmead, NSW, Australia.,Sydney Centres for Thrombosis and Haemostasis, Westmead, NSW, Australia.,Faculty of Science and Health, Charles Sturt University, Wagga Wagga, NSW, Australia
| | - Leonardo Pasalic
- Haematology, Institute of Clinical Pathology and Medical Research (ICPMR), NSW Health Pathology, Westmead Hospital, Westmead, NSW, Australia.,Sydney Centres for Thrombosis and Haemostasis, Westmead, NSW, Australia.,Westmead Clinical School, University of Sydney, Westmead, NSW, Australia
| | - Giuseppe Lippi
- Section of Clinical Biochemistry and School of Medicine, University of Verona, Verona, Italy
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Favaloro EJ, Mohammed S, Vong R, Chapman K, Kershaw G, Just S, Connelly L, Ryan M, Zebeljan D, Brighton T, Pasalic L. Harmonizing platelet function analyzer testing and reporting in a large laboratory network. Int J Lab Hematol 2022; 44:934-944. [PMID: 35754202 PMCID: PMC9545980 DOI: 10.1111/ijlh.13907] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 05/30/2022] [Indexed: 11/29/2022]
Abstract
INTRODUCTION The platelet function analyzer (PFA) is a popular platelet function screening instrument, highly sensitive to von Willebrand disease (VWD) and to aspirin therapy, with moderate sensitivity to defects in platelet function and/or deficiencies in platelet number. There are two models, the original PFA-100 and the contemporary PFA-200. Normal reference ranges (NRRs) provided by the manufacturer are the same for both models, instead being based on the type of test cartridge, for which there are two main ones: collagen/epinephrine (C/Epi) and collagen/adenosine diphosphate (C/ADP). METHODS Comparative evaluations of PFA testing and reporting in six different sites of a large pathology network, aiming to harmonize NRRs and test reporting across all network sites. A separate comparative study of testing a range of samples (n > 150) on a PFA-100 versus that on a PFA-200. Review of contemporary literature. RESULTS Each site was identified to have a different reporting NRR, which after consolidating data permitted establishment of an agreed harmonized NRR for use across the network (C/Epi: 90-160; C/ADP: 70-124; based on n > 180). Similarly, each site reported and interpreted results in different ways, and after discussion and consolidation, a harmonized approach to interpretation and reporting was achieved. The separate comparative study of PFA-100 versus PFA-200 testing confirmed instrument equivalence. CONCLUSION We achieved harmonized NRRs and reporting for PFA testing across a large pathology network. Our approach may be useful for other laboratory networks wishing to harmonize PFA testing.
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Affiliation(s)
- Emmanuel J Favaloro
- Haematology, Institute of Clinical Pathology and Medical Research (ICPMR), NSW Health Pathology, Westmead Hospital, Westmead, New South Wales, Australia.,Sydney Centres for Thrombosis and Haemostasis, Westmead, New South Wales, Australia.,Faculty of Science and Health, Charles Sturt University, Wagga Wagga, New South Wales, Australia
| | - Soma Mohammed
- Haematology, Institute of Clinical Pathology and Medical Research (ICPMR), NSW Health Pathology, Westmead Hospital, Westmead, New South Wales, Australia
| | - Ronny Vong
- Haematology, Institute of Clinical Pathology and Medical Research (ICPMR), NSW Health Pathology, Westmead Hospital, Westmead, New South Wales, Australia
| | - Kent Chapman
- Haematology, NSW Health Pathology, John Hunter Hospital, Newcastle, New South Wales, Australia
| | - Geoffrey Kershaw
- Haematology, NSW Health Pathology, Prince Alfred Hospital, Camperdown, New South Wales, Australia
| | - Sarah Just
- Haematology, NSW Health Pathology, Royal North Shore Hospital, St Leonards, New South Wales, Australia
| | - Lynne Connelly
- Haematology, NSW Health Pathology, Royal North Shore Hospital, St Leonards, New South Wales, Australia
| | - Michael Ryan
- Haematology, NSW Health Pathology, Wollongong Hospital, Wollongong, New South Wales, Australia
| | - Diane Zebeljan
- Haematology, NSW Health Pathology, Liverpool Hospital, Liverpool, New South Wales, Australia
| | - Timothy Brighton
- Haematology, NSW Health Pathology, Prince of Wales Hospital, Randwick, New South Wales, Australia
| | - Leonardo Pasalic
- Haematology, Institute of Clinical Pathology and Medical Research (ICPMR), NSW Health Pathology, Westmead Hospital, Westmead, New South Wales, Australia.,Sydney Centres for Thrombosis and Haemostasis, Westmead, New South Wales, Australia.,Westmead Clinical School, University of Sydney, Westmead, New South Wales, Australia
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6
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Metze M, Platz M, Pfrepper C, Petros S. [Coagulation diagnostics in the clinical routine-Part 1 : Evaluation of the risk of bleeding before surgery, interventions and diagnostics in bleeding diathesis]. Inn Med (Heidelb) 2022; 63:619-630. [PMID: 35925131 DOI: 10.1007/s00108-022-01331-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 04/04/2022] [Indexed: 06/15/2023]
Abstract
This article on coagulation diagnostics is published in two parts covering five common clinical scenarios for coagulation diagnostics. Part 1 deals with the diagnostics prior to invasive interventions and coagulation diagnostics to clarify a tendency to bleeding. The global parameters Quick and activated partial thromboplastin time are established for monitoring certain anticoagulants; however, they are not predictive with respect to the risk of bleeding prior to elective invasive interventions. In this context, disorders of primary hemostasis are frequent, which are insufficiently detected by the global parameters. Most clinical bleeding tendencies are due to acquired causes. These include anticoagulants and diseases which can be accompanied by tendency to bleeding. For coagulation tests preanalytical issues are essential in order to avoid false results. The interpretation should always be made in the context of the current physiological state.
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Affiliation(s)
- Michael Metze
- Klinik und Poliklinik für Kardiologie, Universitätsklinikum Leipzig, Liebigstr. 20, 04103, Leipzig, Deutschland.
| | - Martin Platz
- Klinik und Poliklinik für Kardiologie, Universitätsklinikum Leipzig, Liebigstr. 20, 04103, Leipzig, Deutschland
| | - Christian Pfrepper
- Klinik und Poliklinik für Hämatologie, Zelltherapie und Hämostaseologie, Bereich Hämostaseologie, Universitätsklinikum Leipzig, Leipzig, Deutschland
| | - Sirak Petros
- Klinik und Poliklinik für Hämatologie, Zelltherapie und Hämostaseologie, Bereich Hämostaseologie, Universitätsklinikum Leipzig, Leipzig, Deutschland
- Interdisziplinäre Internistische Intensivmedizin, Universitätsklinikum Leipzig, Leipzig, Deutschland
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7
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Lauermann P, Klingelhöfer A, Mielke D, Bahlmann D, Hoerauf H, Koscielny J, Sucker C, Feltgen N, van Oterendorp C. Risk Factors for Severe Bleeding Complications in Glaucoma Surgery and the Role of Antiplatelet or Anticoagulant Agents. Clin Ophthalmol 2022; 16:1245-1254. [PMID: 35493972 PMCID: PMC9041781 DOI: 10.2147/opth.s361867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 04/06/2022] [Indexed: 11/23/2022] Open
Abstract
Purpose To evaluate the influences and risk factors for severe bleeding complications during glaucoma surgery, and to investigate the role of antiplatelet (AP) and anticoagulant (AC) agents. Methods This prospective study enrolled patients undergoing trabeculectomy, trabeculotomy (with Trabectome® or Kahook Dual Blade®), viscocanaloplasty and Ahmed or Baerveldt implants. Bleeding severity was graded on an ordinal scale ranging from 0 to 5. Immediately after surgery and one day later, the incidence and severity of bleeding events was documented on a standardized form. A grade ≥3 was defined as severe bleeding. The influence of known systemic disorders, the type of anesthesia, surgical procedure, intraoperative blood pressure, and the use of or change in AP or AC agents on intraoperative bleeding were analyzed. Results Data from 89 eyes undergoing glaucoma procedures were included (age 71.3y ± 10.5). We observed severe intraoperative bleeding in 8 eyes (9%) and found that concomitant diseases such as the history of a deep vein thrombosis or peripheral arterial occlusive disease, and the type of surgical procedure (trabeculectomy and viscocanaloplasty) were significantly associated with severe bleeding events. By contrast, the use of AP/ AC agents had no significant influence on severe intraoperative bleeding events. Conclusion According to the results of our study cohort, glaucoma procedures entailing scleral manipulations (trabeculectomy and viscocanaloplasty) and concomitant diseases such as the history of a deep vein thrombosis or peripheral arterial occlusive disease influence the risk of severe intraoperative bleeding events, we detected no increased risk related to concomitant antiplatelet and/ or anticoagulant medication use.
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Affiliation(s)
- Peer Lauermann
- Department of Ophthalmology, University Medical Center Goettingen, Goettingen, Germany
- Correspondence: Peer Lauermann, Department of Ophthalmology, University Medical Center Goettingen, Robert-Koch Str. 40, Goettingen, 37075, Germany, Email
| | - Anthea Klingelhöfer
- Department of Ophthalmology, University Medical Center Goettingen, Goettingen, Germany
| | - Dorothee Mielke
- Department of Neurosurgery, University Medical Center Goettingen, Goettingen, Germany
| | - Dirk Bahlmann
- Department of Ophthalmology, University Medical Center Goettingen, Goettingen, Germany
| | - Hans Hoerauf
- Department of Ophthalmology, University Medical Center Goettingen, Goettingen, Germany
| | - Juergen Koscielny
- Gerinnungsambulanz mit Hämophiliezentrum im Ambulanten Gesundheitszentrum (AGZ), Charité Universitätsmedizin Berlin, Berlin, Germany
| | | | - Nicolas Feltgen
- Department of Ophthalmology, University Medical Center Goettingen, Goettingen, Germany
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Wagner M, Uzun G, Bakchoul T, Althaus K. Diagnosis of Platelet Function Disorders: A Challenge for Laboratories. Hamostaseologie 2022; 42:36-45. [PMID: 35196730 DOI: 10.1055/a-1700-7036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
In patients with normal plasmatic coagulation and bleeding tendency, platelet function defect can be assumed. Congenital platelet function defects are rare. Much more commonly they are acquired. The clinical bleeding tendency of platelet function defects is heterogeneous, which makes diagnostic approaches difficult. During the years, a large variety of tests for morphological phenotyping and functional analysis have been developed. The diagnosis of platelet function defects is based on standardized bleeding assessment tools followed by a profound morphological evaluation of the platelets. Platelet function assays like light transmission aggregation, luminoaggregometry, and impedance aggregometry followed by flow cytometry are commonly used to establish the diagnosis in these patients. Nevertheless, despite great efforts, standardization of these tests is poor and in most cases, quality control is lacking. In addition, these tests are still limited to specialized laboratories. This review summarizes the approaches to morphologic phenotyping and platelet testing in patients with suspected platelet dysfunction, beginning with a standardized bleeding score and ending with flow cytometry testing. The diagnosis of a functional defect requires a good collaboration between the laboratory and the clinician.
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Affiliation(s)
- Miriam Wagner
- Transfusion Medicine, Faculty of Medicine, University of Tübingen, Tübingen, Germany
| | - Günalp Uzun
- Centre for Clinical Transfusion Medicine, Tübingen ZKT gGmbH, Tübingen, Germany
| | - Tamam Bakchoul
- Transfusion Medicine, Faculty of Medicine, University of Tübingen, Tübingen, Germany.,Centre for Clinical Transfusion Medicine, Tübingen ZKT gGmbH, Tübingen, Germany
| | - Karina Althaus
- Transfusion Medicine, Faculty of Medicine, University of Tübingen, Tübingen, Germany.,Centre for Clinical Transfusion Medicine, Tübingen ZKT gGmbH, Tübingen, Germany
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Tanner LM, Kunishima S, Lehtinen E, Helin T, Volmonen K, Lassila R, Pöyhönen M. Platelet function and filamin A expression in two families with novel FLNA gene mutations associated with periventricular nodular heterotopia and panlobular emphysema. Am J Med Genet A 2022; 188:1716-1722. [PMID: 35156755 PMCID: PMC9303863 DOI: 10.1002/ajmg.a.62690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 01/15/2022] [Accepted: 01/28/2022] [Indexed: 11/22/2022]
Abstract
Pathogenic variants of the X‐linked FLNA gene encoding filamin A protein have been associated with a wide spectrum of symptoms, including the recently described pulmonary phenotype with childhood‐onset panlobular emphysema. We describe three female patients from two families with novel heterozygous FLNA variants c.5837_2del and c.508C > T. Analysis of immunofluorescence of peripheral blood smears and platelet function was performed for all patients. FLNA‐negative platelets were observed, suggesting that these variants result in the loss of a functional protein product. All three patients also had periventricular nodular heterotopia and panlobular emphysema. However, they had considerably milder symptoms and later age of onset than in the previously reported cases. Therefore, patients with pathogenic FLNA variants should be studied actively for lung involvement even in the absence of pronounced respiratory symptoms. Conversely, any patient with unexplained panlobular emphysema should be analyzed for pathogenic FLNA variants. We also suggest that immunofluorescence analysis is a useful tool for investigating the pathogenicity of novel FLNA variants.
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Affiliation(s)
- Laura M Tanner
- HUSLAB Department of Clinical Genetics, Helsinki University Hospital, Helsinki, Finland.,Department of Medical and Clinical Genetics, University of Helsinki, Helsinki, Finland
| | - Shinji Kunishima
- Department of Medical Technology, Gifu University of Medical Science, Gifu, Japan
| | - Elina Lehtinen
- Coagulation Disorders Unit, Helsinki University Hospital, Research Program Unit in Systems Oncology, University of Helsinki, Helsinki, Finland
| | - Tuukka Helin
- HUSLAB Department of Chemistry and Microbiology, Helsinki University Hospital, Helsinki, Finland
| | - Kirsi Volmonen
- HUS Medical Imaging Center, Helsinki University Hospital, Helsinki, Finland
| | - Riitta Lassila
- Coagulation Disorders Unit, Helsinki University Hospital, Research Program Unit in Systems Oncology, University of Helsinki, Helsinki, Finland.,HUSLAB Department of Chemistry and Microbiology, Helsinki University Hospital, Helsinki, Finland
| | - Minna Pöyhönen
- HUSLAB Department of Clinical Genetics, Helsinki University Hospital, Helsinki, Finland.,Department of Medical and Clinical Genetics, University of Helsinki, Helsinki, Finland
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Spelde AE, Spahn DR, Patel PA. Hematologic Risk Assessment. Perioper Med (Lond) 2022. [DOI: 10.1016/b978-0-323-56724-4.00010-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Zimmermann A, Spiekermann K. [Step by step - A diagnostic approach to bleeding disorders]. Dtsch Med Wochenschr 2021; 146:1360-1368. [PMID: 34644797 DOI: 10.1055/a-1226-5388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
The main symptom of hemorrhagic diathesis is an increased bleeding tendency. Due to the subjectivity of various features of the bleeding history, unclarity of the family history, and an individualization of the extent of diagnostic the evaluation of a suspected bleeding disorder represents a challenging endeavour in hematology. Hemorrhagic diathesis can be divided into the following sub-categories: disorders in primary hemostasis (e. g. von Willebrand disease, different causes of thrombocytopenia), secondary hemostasis (e. g. hemophilia A and B, Vitamin K deficiency) and fibrinolysis, and in connective tissue or vascular formation. This article reviews available diagnostic methods for bleeding disorders, from structured patient history to highly specialized laboratory diagnosis.
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12
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Abstract
Bleeding is associated with an increased morbidity and mortality. Anatomic and hemostatic causes play a central role in the pathophysiology of bleeding, with anatomic causes being by far more common. While trauma and invasive procedures are the leading causes of bleeding in surgical disciplines, gastrointestinal bleeding is the major cause of bleeding in internal medicine. Major bleedings lead to secondary homeostatic changes, which in turn not only contribute to further bleeding, but also to the pathogenesis of organ dysfunction. Acquired coagulopathies due to antithrombotic treatment or an underlying disease also contribute to the extent and the dynamics of bleeding, while hereditary bleeding disorders are seldom. The balance between the physiological pro- and anticoagulant pathway plays a significant role in the pathophysiology of bleeding and coagulation. Therefore, the pathophysiology of bleeding cannot be described by means of easily available laboratory coagulation workup. The aim of coagulation correction during the management of life-threatening bleeding is not to normalize coagulation, but rather to stop bleeding. Besides a careful clinical evaluation of the course of bleeding coupled with basic understanding of the physiology of coagulation, targeted laboratory coagulation workup can contribute to a rational coagulation treatment concept.
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Affiliation(s)
- Sirak Petros
- Interdisziplinäre Internistische Intensivmedizin, Universitätsklinikum Leipzig, Liebigstr. 20, 04103, Leipzig, Deutschland.
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13
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Restin T, Schmugge M, Cushing MM, Haas T. Comparison between intraoperative bleeding score and ROTEM® measurements to assess coagulopathy during major pediatric surgery. Transfus Apher Sci 2021;:103191. [PMID: 34215519 DOI: 10.1016/j.transci.2021.103191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 06/01/2021] [Accepted: 06/11/2021] [Indexed: 11/23/2022]
Abstract
PURPOSE Intraoperative bleeding should be regularly assessed visually to guide coagulation management. Whereas viscoelastic testing with ROTEM® measurement has been proven to be useful in detecting coagulopathies, the visual assessment is not standardized. This study therefore aims to compare a standardized visual assessment with ROTEM® results. METHODS A 5-point bleeding score was created and applied in a recently published randomized controlled trial in major pediatric non-cardiac surgery. This score assesses overall bleeding tendency and the occurrence of diffuse bleeding, aqueous bleeding, bleeding outside the operative field, and the ability to control bleeding. Validity of this score was tested by post hoc comparison to the results of simultaneously performed ROTEM® measurements. RESULTS Signs of coagulopathic bleeding were assessed at 183 time points. Mild to moderate bleeding intensity was judged at 103 time points, in 42 % abnormal ROTEM® traces were obtained simultaneously. When severe bleeding was scored, abnormal ROTEM values occurred in 58 %, and FIBTEM-values were significantly lower than in the "no bleeding group". Altogether, the correlation between bleeding score and ROTEM® measurements was not significant. CONCLUSIONS The standardized visual assessment did not correlate well with ROTEM® measurements, suggesting that it is not useful to detect coagulopathy. Trial registry number: ClinicalTrials.gov identifier No. NCT01487837.
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Erdoes G, Koster A, Levy JH. Viscoelastic Coagulation Testing: Use and Current Limitations in Perioperative Decision-making. Anesthesiology 2021; 135:342-9. [PMID: 33979438 DOI: 10.1097/ALN.0000000000003814] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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15
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Gandhi A, Görlinger K, Nair SC, Kapoor PM, Trikha A, Mehta Y, Handoo A, Karlekar A, Kotwal J, John J, Apte S, Vohra V, Gupta G, Tiwari AK, Rani A, Singh SA. Patient blood management in India - Review of current practices and feasibility of applying appropriate standard of care guidelines. A position paper by an interdisciplinary expert group. J Anaesthesiol Clin Pharmacol 2021; 37:3-13. [PMID: 34103816 PMCID: PMC8174427 DOI: 10.4103/joacp.joacp_410_20] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 09/09/2020] [Accepted: 10/04/2020] [Indexed: 01/09/2023] Open
Abstract
In a developing country like India, with limited resources and access to healthcare facilities, dealing with massive hemorrhage is a major challenge. This challenge gets compounded by pre-existing anemia, hemostatic disorders, and logistic issues of timely transfer of such patients from peripheral hospitals to centers with adequate resources and management expertise. Despite the awareness amongst healthcare providers regarding management modalities of bleeding patients, no uniform Patient Blood Management (PBM) or perioperative bleeding management protocols have been implemented in India, yet. In light of this, an interdisciplinary expert group came together, comprising of experts working in transfusion medicine, hematology, obstetrics, anesthesiology and intensive care, to review current practices in management of bleeding in Indian healthcare institutions and evaluating the feasibility of implementing uniform PBM guidelines. The specific intent was to perform a gap analysis between the ideal and the current status in terms of practices and resources. The expert group identified interdisciplinary education in PBM and bleeding management, bleeding history, viscoelastic and platelet function testing, and the implementation of validated, setting-specific bleeding management protocols (algorithms) as important tools in PBM and perioperative bleeding management. Here, trauma, major surgery, postpartum hemorrhage, cardiac and liver surgery are the most common clinical settings associated with massive blood loss. Accordingly, PBM should be implemented as a multidisciplinary and practically applicable concept in India in a timely manner in order to optimize the use the precious resource blood and to increase patients' safety.
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Affiliation(s)
- Ajay Gandhi
- Head - Clinical Affairs, Instrumentation Laboratory India Pvt Ltd, New Delhi, India
| | - Klaus Görlinger
- Medical Director, TEM Innovations/PBM Instrumentation Laboratory, Munich, Germany
| | - Sukesh C Nair
- Department of Transfusion Medicine and Immunohematology, Christian Medical College, Vellore, Tamil Nadu, India
| | - Poonam M Kapoor
- Department of Cardiac Anaesthesia, All India Institute of Medical Sciences, New Delhi, India
| | - Anjan Trikha
- Department of Anaesthesiology, Pain Medicine and Critical Care, In Charge Trauma Intensive Care Unit and Trauma Anaesthesia, JPN Apex Trauma Centre, New Delhi, India
| | - Yatin Mehta
- Department of Cardiac Anaesthesia, Medanta the Medicity, Gurugram, Haryana, India
| | - Anil Handoo
- Department of Laboratory Medicine, BLK Superspeciality Hospital, New Delhi, India
| | - Anil Karlekar
- Department of Cardiac Anaesthesia, Fortis Escorts Heart Institute, New Delhi, India
| | - Jyoti Kotwal
- Department of Haematology, Sir Gangaram Hospital, New Delhi, India
| | - Joseph John
- Department of Haematology and Bone Marrow Transplant, Christian Medical College, Ludhiana, Punjab, India
| | - Shashikant Apte
- Department of Clinical Haematology, Sahayadri Hospital, Pune, Maharashtra, India
| | - Vijay Vohra
- Department of Liver Transplant Anaesthesia, Medanta the Medicity, Gurugram, Haryana, India
| | - Gajendra Gupta
- Medical Director and Head, Laboratory and Blood Bank, Santokhba Durlabhji Hospital, Jaipur, Rajasthan, India
| | - Aseem K Tiwari
- Department of Transfusion Medicine, Medanta the Medicity, Gurugram, Haryana, India
| | - Anjali Rani
- Department of Liver Transplant Anaesthesia, Max Superspeciality Hospital, New Delhi, India
| | - Shweta A Singh
- Department of Obstetrics and Gynaecology, Banaras Hindu University, Varanasi, Uttar Pradesh, India
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Abstract
Hemostasis is a complex wound-healing process involving numerous mechanical and biochemical mechanisms and influenced by many factors including platelets, coagulation factors, and endothelial components. Slight alterations in these mechanisms can lead to either prothrombotic or bleeding consequences, and such hemostatic imbalances can lead to significant clinical consequences with resultant morbidity and mortality. An ideal hemostasis assay would not only address all the unique processes involved in clot formation and resolution but also take place under flow conditions to account for endothelial involvement. Global assays do exist; however, these assays are not flow based. Flow-based assays have been limited secondary to their large blood volume requirements and low throughput, limiting potential clinical applications. Microfluidic-based assays address the aforementioned limitations of both global and flow-based assays by utilizing standardized devices that require low blood volumes, offer reproducible analysis, and have functionality under a range of shear stresses and flow conditions. While still largely confined to the preclinical space, here we aim to discuss these novel technologies and potential clinical implications, particularly in comparison to the current, commercially available point-of-care assays.
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Affiliation(s)
- Christina Caruso
- Department of Pediatrics, Aflac Cancer and Blood Disorders Center of Children's Healthcare of Atlanta, Emory University School of Medicine, Atlanta, Georgia
| | - Wilbur A Lam
- Department of Pediatrics, Aflac Cancer and Blood Disorders Center of Children's Healthcare of Atlanta, Emory University School of Medicine, Atlanta, Georgia.,Wallace H. Coulter Department of Biomedical Engineering, Emory University School of Medicine, Georgia Institute of Technology, Atlanta, Georgia
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17
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Kaufmann J, Adler M, Alberio L, Nagler M. Utility of the Platelet Function Analyzer in Patients with Suspected Platelet Function Disorders: Diagnostic Accuracy Study. TH Open 2020; 4:e427-e436. [PMID: 33376942 PMCID: PMC7755505 DOI: 10.1055/s-0040-1721502] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 10/28/2020] [Indexed: 11/30/2022] Open
Abstract
Introduction
The platelet function analyzer (PFA) is widely used as a screening tool for bleeding disorders in various settings. The diagnostic performance regarding platelet function disorders (PFDs), which are among the most common inherited bleeding disorders, is however still elusive. We aimed to assess the diagnostic value of PFA for PFD in clinical practice.
Methods
Comprehensive clinical and laboratory data of all consecutive patients referred to a specialized outpatient between January 2012 and March 2017 with a suspected bleeding disorder were prospectively recorded. The diagnostic work-up was performed according to a prespecified protocol following current guidelines and platelet function was tested using light transmission aggregometry as well as flow cytometry.
Results
Five hundred and fifty-five patients were included (median age 43.7 years; interquartile range [IQR] 29.3, 61.7; 66.9% female). Possible PFD was diagnosed in 64 patients (11.5%) and confirmed PFD in 54 patients (9.7%). In patients with confirmed PFD, median closure times were 107 seconds (ADP or adenosine diphosphate; IQR 89, 130) and 169 seconds (EPI; IQR 121, 211). In patients without bleeding disorders, PFA closure times were 96 seconds (ADP; IQR 83, 109) and 137 seconds (EPI; IQR 116, 158). The sensitivity was 19.5% in case of PFA ADP (95%CI 12.6, 30.0; specificity 86.4%; 95% CI 82.4, 89.8), and 44.3% in case of PFA EPI (95% CI 34.9, 53.9; specificity 75.6%; 95% CI 70.8, 79.9).
Conclusion
The diagnostic performance of PFA for PFD was moderate to poor. Our results do not support the utilization of PFA for screening of PFD in clinical practice.
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Affiliation(s)
- Jonas Kaufmann
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland
| | - Marcel Adler
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland.,Division of Hematology and Central Hematology Laboratory, CHUV, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Lorenzo Alberio
- Division of Hematology and Central Hematology Laboratory, CHUV, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.,Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
| | - Michael Nagler
- Department of Hematology and Central Hematology Laboratory, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland.,University Institute of Clinical Chemistry, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
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18
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Scharf RE. Hemostasis Laboratory Diagnostics: Characteristics, Communication Issues, and Current Challenges Resulting from Centralization of Laboratory Medicine. Hamostaseologie 2020; 40:403-412. [DOI: 10.1055/a-1249-8767] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
AbstractLaboratory diagnostics of patients with bleeding and thrombotic disorders can be a delicate task, which requires special skills and expertise. In this article, characteristic features of hemostasis testing are reviewed, including staged protocols and synoptic assessment of the patient history, clinical symptoms, and laboratory findings. Despite major progress in the diagnostic and therapeutic management, centralized testing of hemostasis can be associated with substantial challenges, resulting from the current dissociation between the clinical and laboratory world. To address some of these challenges, possible solutions are discussed, including adaptation of an established working paradigm.
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Affiliation(s)
- Rüdiger E. Scharf
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts, USA
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Yu ES, Jeon MJ, Kang KW, Lee BH, Kang EJ, Park Y, Lee SR, Sung HJ, Choi CW, Kim BS, Kim DS. The role of platelet function analyzer-200 in predicting perioperative bleeding risk. Korean J Intern Med 2020; 35:1199-1209. [PMID: 32019292 PMCID: PMC7487293 DOI: 10.3904/kjim.2019.112] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 04/17/2019] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND/AIMS Various preoperative screening tests, such as platelet count, prothrombin time, activated partial thromboplastin time, and bleeding time, have been widely used to evaluate the risk of bleeding during surgery. Use of platelet function analyzer (PFA)-100/200 for assessing platelet function instead of bleeding time is increasing. However, its role in predicting the perioperative risk of bleeding remains controversial. METHODS Data of 703 patients who underwent surgery under general anesthesia were retrospectively analyzed. Preoperative platelet function was measured using PFA-200 system and the association with intraoperative bleeding was assessed. Additionally, other variables that could affect PFA-200 results were assessed by logistic regression analysis. RESULTS Collagen/epinephrine (COL/EPI) test was prolonged in 199/703 (28.3%) patients (EPI group), while 99/212 (46.7%) patients showed COL/adenosine diphosphate test abnormalities. Bleeding over 300 mL during surgery occurred in 14.3% and 20.1% of patients in the normal and EPI groups, respectively (p = 0.058). In addition, red blood cell transfusion within 72 hours after surgery rate was significantly higher in the EPI group than in the normal group (31.7% vs. 23.4%, p = 0.024). In multivariate logistic analysis, prolongation closure time with COL/EPI (p = 0.068) was marginally associated with risk of bleeding during surgery. Furthermore, PFA-200 results were influenced by various factors, such as nonsteroidal anti-inflammatory drug use, blood group, hematocrit, and time of blood collection. CONCLUSION Preoperative PFA-200 test may be helpful in predicting the risk of perioperative bleeding. However, its results should be carefully interpreted because they are affected by several factors.
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Affiliation(s)
- Eun Sang Yu
- Division of Hematology-Oncology, Department of Internal Medicine, Korea University Guro Hospital, Seoul, Korea
| | - Min Ji Jeon
- Division of Hematology-Oncology, Department of Internal Medicine, Korea University Guro Hospital, Seoul, Korea
| | - Ka-Won Kang
- Division of Hematology-Oncology, Department of Internal Medicine, Korea University Anam Hospital, Seoul, Korea
| | - Byung-Hyun Lee
- Division of Hematology-Oncology, Department of Internal Medicine, Korea University Anam Hospital, Seoul, Korea
| | - Eun Joo Kang
- Division of Hematology-Oncology, Department of Internal Medicine, Korea University Guro Hospital, Seoul, Korea
| | - Yong Park
- Division of Hematology-Oncology, Department of Internal Medicine, Korea University Anam Hospital, Seoul, Korea
| | - Se Ryeon Lee
- Division of Hematology-Oncology, Department of Internal Medicine, Korea University Ansan Hospital, Ansan, Korea
| | - Hwa Jung Sung
- Division of Hematology-Oncology, Department of Internal Medicine, Korea University Ansan Hospital, Ansan, Korea
| | - Chul Won Choi
- Division of Hematology-Oncology, Department of Internal Medicine, Korea University Guro Hospital, Seoul, Korea
| | - Byung Soo Kim
- Division of Hematology-Oncology, Department of Internal Medicine, Korea University Anam Hospital, Seoul, Korea
| | - Dae Sik Kim
- Division of Hematology-Oncology, Department of Internal Medicine, Korea University Guro Hospital, Seoul, Korea
- Correspondence to Dae Sik Kim, M.D. Division of Hematology and Oncology, Department of Internal Medicine, Korea University School of Medicine, 148 Gurodong-ro, Guro-gu, Seoul 08308, Korea Tel: +82-2-2626-3062 Fax: +82-2-2626-2208 E-mail:
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20
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Listyo S, Forrest E, Graf L, Korte W. The Need for Red Cell Support During Non-Cardiac Surgery Is Associated to Pre-Transfusion Levels of FXIII and the Platelet Count. J Clin Med 2020; 9:jcm9082456. [PMID: 32751988 PMCID: PMC7465630 DOI: 10.3390/jcm9082456] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 07/27/2020] [Accepted: 07/27/2020] [Indexed: 12/20/2022] Open
Abstract
Unexpected intraoperative bleeding is associated with a reduced availability of crosslinking capacity (provided through factor XIII (FXIII)) per unit of generated thrombin. Furthermore, FXIII deficiency and thrombocytopenia (but not fibrinogen deficiency) are the most prevalent modulators of clot firmness in the immediate postoperative setting. In this study, we therefore evaluated whether levels of FXIII, fibrinogen, or the platelet count influenced the probability of intraoperative red cell transfusions in patients in the operating theatre. This retrospective study was comprised of 1023 patients, which were in need of blood product support in the operating theatre and of which 443 received red cell transfusions. Due to standard operating procedures, FXIII activity, fibrinogen concentration, and platelet count were measured before transfusion took place, but without influencing the decision to transfuse. FXIII deficiency was frequent (50%), as was thrombocytopenia (49%), but not fibrinogen deficiency (9%). FXIII deficiency was associated with a significantly increased probability to receive red cell transfusions (OR 4.58, 95% CI 3.46–6.05) as was thrombocytopenia (OR 1.94, 95% CI 1.47–2.56), but not fibrinogen deficiency (OR 1.09, 95% CI 0.67–1.76). Similar results were seen for cut-off independent evaluations (receiver operating characteristics (ROC) curves, using continuously distributed variables), where the areas under the curves (AUC) of red cell transfusion for FXIII activity was 0.744 (95% CI 0.716–0.770)/0.632 (95% CI 0.601–0.661) for the platelet count, and 0.578 (95% CI 0.547–0.609) for fibrinogen concentration. All AUCs were significantly different from each other (p < 0.0001 and p = 0.0106, respectively), indicating that FXIII activity was a significantly better predictor of red blood cell (RBC) transfusion than platelet count and fibrinogen concentration. These results suggest that pre-transfusion FXIII activity and to a lesser extent the platelet count influence the probability of intraoperative red cell transfusions. Modifying FXIII activity and/or the platelet count might influence the need for downstream red cell transfusion, thus potentially reducing transfusion associated morbidity. This, however, needs confirmation in future studies.
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Affiliation(s)
- Silke Listyo
- University of Bern, Hochschulstrasse 6, 3012 Bern, Switzerland;
| | - Eric Forrest
- Blutspendezentrum SRK Ostschweiz, Rorschacher Strasse 111, 9000 St. Gallen, Switzerland;
| | - Lukas Graf
- Center for Laboratory Medicine and Haemostasis and Hemophilia Center St. Gallen, Frohbergstrasse 3, 9001 St. Gallen, Switzerland;
| | - Wolfgang Korte
- University of Bern, Hochschulstrasse 6, 3012 Bern, Switzerland;
- Center for Laboratory Medicine and Haemostasis and Hemophilia Center St. Gallen, Frohbergstrasse 3, 9001 St. Gallen, Switzerland;
- Correspondence: ; Tel.: +41-58-580-9202
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21
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Favaloro EJ. Utility of the platelet function analyser (PFA-100/200) for exclusion or detection of von Willebrand disease: A study 22 years in the making. Thromb Res 2020; 188:17-24. [PMID: 32036157 DOI: 10.1016/j.thromres.2020.01.029] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Revised: 01/04/2020] [Accepted: 01/31/2020] [Indexed: 11/16/2022]
Abstract
INTRODUCTION von Willebrand disease (VWD) is the most common inherited bleeding disorder and may alternatively arise as an acquired condition (AVWS). These represent deficiency and/or defects in von Willebrand factor (VWF). Closure times (CTs) obtained from the platelet function analyser (PFA) are highly sensitive to both VWD/AVWS. The current study has evaluated the utility of the PFA-100/-200 to exclude or detect laboratory identified VWD. MATERIALS AND METHODS An evaluation of the success or otherwise of prospective PFA testing to help exclude or detect VWD using data from a locally maintained database. This database contains patient information, results of PFA testing, results of VWF testing, platelet count and hematocrit, and additional information, for a current total of 3678 entries representing over 2 decades of testing. RESULTS According to selection criteria, a total of 142 samples were identified as derived from patients with VWD. All but one of these were also identified to have abnormal PFA CTs. Additional data sets of patients with 'low VWF' (n = 137), or borderline normal VWF (n = 163) were also identified, as well as patients with thrombocytopenia and/or low hematocrit (n = 487). In these cohorts, PFA CTs were often (but not always) abnormal. There was a strong association between VWF test parameter values and PFA CTs. Additional study samples comprised cases with normal VWF parameters but prolonged CTs (n = 594), as well as cases with normal VWF and normal CTs (n = 1292), permitting calculation of sensitivity of abnormal PFA for VWD (99.3%), as well as specificity (68.5%), negative predictive value (99.9%) and positive predictive value (19.2%), for a prevalence of 7.0%. Comparatively, normal PFA CTs were better able to exclude VWD than normal test results for individual VWF parameters. CONCLUSION This study reports on an evaluation of PFA CTs for identification or exclusion of VWD. In our dataset, representing over 22 years of experience, normal PFA CTs were able to predict absence of VWD with higher sensitivity than individual VWF test results.
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Affiliation(s)
- Emmanuel J Favaloro
- Haematology, Institute of Clinical Pathology and Medical Research (ICPMR), NSW Health Pathology, Westmead Hospital, Westmead, NSW, Australia; Sydney Centres for Thrombosis and Haemostasis Research, Westmead Hospital, Westmead, NSW, Australia.
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Hinterleitner C, Pecher AC, Kreißelmeier KP, Budde U, Kanz L, Kopp HG, Jaschonek K. Disease progression and defects in primary hemostasis as major cause of bleeding in multiple myeloma. Eur J Haematol 2019; 104:26-35. [PMID: 31541609 DOI: 10.1111/ejh.13331] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 09/12/2019] [Accepted: 09/17/2019] [Indexed: 12/15/2022]
Abstract
BACKGROUND AND OBJECTIVES In patients with multiple myeloma (MM), unexpected bleeding complications remain a major issue. Since routine coagulation parameters are often inconspicuous, diagnosis and treatment of the underlying coagulation disorders are challenging. PATIENTS AND METHODS In our single-center observational study, we analyzed 164 patients with MM for coagulation disorders and bleeding complications. RESULTS Prolonged closure times (CTs), measured by PFA-100, were the most common, abnormal coagulation test, found in 66% of bleeding patients vs 5% in non-bleeding, followed by qualitative defects of von Willebrand factor (VWF:CB/VWF:Ag ratios), found in 34% vs 1% in the non-bleeding group. Increased serum free light chains (SFLC) and SFLC ratios were significantly associated with prolonged CTs and acquired von Willebrand syndrome (AVWS). Prolonged CTs and AVWS were associated with disease progression, determined by dynamics of SFLC ratios (P < .001), serum creatinine level (P = .013), Beta-2 microglobulin (P = .03), LDH (P = .016), and bone marrow infiltration (P < .001). Of note, response to myeloma therapy was frequently correlated with normalization of coagulation parameters. CONCLUSIONS Bleeding complications in MM are predominantly caused by defects in primary hemostasis and associated with disease progression. In a peri-interventional workup, determination of CTs and VWF:CB/VWF:Ag ratios are of significant importance to assess bleeding risk.
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Affiliation(s)
- Clemens Hinterleitner
- Department of Medical Oncology, Hematology, Immunology, Rheumatology and Pulmonology, Eberhard-Karls University, Tuebingen, Germany
| | - Ann-Christin Pecher
- Department of Medical Oncology, Hematology, Immunology, Rheumatology and Pulmonology, Eberhard-Karls University, Tuebingen, Germany
| | - Klaus-Peter Kreißelmeier
- Department of Medical Oncology, Hematology, Immunology, Rheumatology and Pulmonology, Eberhard-Karls University, Tuebingen, Germany
| | - Ulrich Budde
- Medilys Laborgesellschaft mbH, Asklepios Klinik Hamburg-Altona, Hamburg, Germany
| | - Lothar Kanz
- Department of Medical Oncology, Hematology, Immunology, Rheumatology and Pulmonology, Eberhard-Karls University, Tuebingen, Germany
| | - Hans-Georg Kopp
- Department of Medical Oncology, Hematology, Immunology, Rheumatology and Pulmonology, Eberhard-Karls University, Tuebingen, Germany
| | - Karl Jaschonek
- Department of Medical Oncology, Hematology, Immunology, Rheumatology and Pulmonology, Eberhard-Karls University, Tuebingen, Germany
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Shahramian I, Tabrizian K, Delaramnasab M, Khosravi Bonjar A, Dehghani SM, Sargazi-Aval O, Bazi A. A Review on Clinical, Pathophysiological, and Diagnostic Hematological Features in Children With Liver Cirrhosis. Int J Basic Sci Med 2019. [DOI: 10.15171/ijbsm.2019.17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Appropriate diagnostic and therapeutic measures for liver cirrhosis is critical, particularly in children. In the present review, a comprehensive approach was provided toward hematological parameters in pediatric liver cirrhosis. The literature search included MeSH terms "liver cirrhosis" and "hepatic cirrhosis" and databases such as PubMed, Web of Science, Scopus, and Google Scholar were searched up until December 2017. Hematologic changes in the liver cirrhosis mainly encompassed anemia and coagulopathies. In addition, bleeding diathesis was considered as the most clinical complication in these patients. In addition to reduced coagulation factors, hyperfibrinolysis is a common feature in childhood cirrhosis and may be an important contributor to the risk of bleeding. Based on the results, children with liver cirrhosis also demonstrated a procoagulant state at laboratory and clinical levels. This may be partly due to a reduction in coagulation inhibitors such as anti-thrombin, C1 inhibitor, and α1-antitrypsin in children with cirrhosis. The portal vein thrombosis and portal hypertension are considered as the most clinical presentations of the hypercoagulable state. Further, children with liver cirrhosis complicated with portal hypertension usually show leukopenia, anemia, and thrombocytopenia due to hypersplenism. Although the etiology of childhood and adult cirrhosis may be different, their hematological compilations and clinicopathological features are somehow similar.
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Affiliation(s)
- Iraj Shahramian
- Pediatric Digestive and Hepatic Diseases Research Center, Zabol University of Medical Sciences, Zabol, Iran
| | - Kaveh Tabrizian
- Department of Pharmacology, Zabol University of Medical Sciences, Zabol, Iran
| | - Mojtaba Delaramnasab
- Faculty of Allied Medical Sciences, Zabol University of Medical Sciences, Zabol, Iran
| | - Ali Khosravi Bonjar
- Faculty of Allied Medical Sciences, Zabol University of Medical Sciences, Zabol, Iran
| | - Seyed Mohsen Dehghani
- Shiraz Organ Transplantation Center, Nemazee Hospital, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Ali Bazi
- Faculty of Allied Medical Sciences, Zabol University of Medical Sciences, Zabol, Iran
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Lubnin AY. [Current trends in the development of neuroanesthesiology]. Zh Vopr Neirokhir Im N N Burdenko 2019; 83:83-91. [PMID: 31825379 DOI: 10.17116/neiro20198305183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The paper presents the author's analysis of the main trends in the development of modern neuroanesthesiology over the past five to ten years. These, in the author\s opinion, include the introduction and elaboration of blood-sparing techniques, monitoring the depth of anesthesia, fast track concept, applying regional (conduction) anesthesia techniques, xenon anesthesia, development of effective and safe protocols for DVT and PTE prophylaxis for neurosurgical patients, study of the hemostatic system using bedside methods for assessing hemostasis (thromboelastogram) and correcting hypocoagulation by activated recombinant VII factor.
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Affiliation(s)
- A Yu Lubnin
- Burdenko Neurosurgical Center, Moscow, Russia
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25
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Scharf RE. Acquired Disorders of Platelet Function. Platelets 2019. [DOI: 10.1016/b978-0-12-813456-6.00049-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Vries MJ, van der Meijden PE, Kuiper GJ, Nelemans PJ, Wetzels RJ, van Oerle RG, Lancé MD, ten Cate H, Henskens YM. Preoperative screening for bleeding disorders: A comprehensive laboratory assessment of clinical practice. Res Pract Thromb Haemost 2018; 2:767-777. [PMID: 30349896 PMCID: PMC6178633 DOI: 10.1002/rth2.12114] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 04/22/2018] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Patients with mild bleeding disorders are at risk of perioperative bleeding, but screening for these disorders remains challenging. OBJECTIVES We aimed to assess the prevalence of hemostatic abnormalities in patients with and without reported bleeding symptoms on a preoperative questionnaire, consisting of guideline-proposed questions, and appraised the diagnostic value of several screening modalities for the identification of patients with hemostatic abnormalities. METHODS In this observational study, 240 patients with and 95 patients without bleeding symptoms on the preoperative questionnaire were included. Patients with known bleeding disorders, antithrombotic drugs, thrombocytopenia, and anemia were excluded. Preoperatively, all patients underwent elaborate hemostatic testing. Hemostatic abnormalities were defined as coagulation, vWF, or fibrinolysis factor levels below reference range and platelet function defects. Screening modalities included the ISTH Bleeding Assessment Tool (ISTH-BAT), PT, aPTT, TT, Euglobulin Lysis Time (ELT), and Platelet Function Analyser (PFA). RESULTS In 21 of 240 (8.8%) patients reporting bleeding symptoms, hemostatic abnormalities were found, including 7 reduced coagulation factor levels, 10 platelet function abnormalities, and 4 reduced vWF levels. In comparison, 10 of 95 (10.5%) patients not reporting bleeding symptoms had abnormalities. The ISTH-BAT could not identify patients with abnormalities, while PT, aPTT, TT, ELT, and PFA had high specificity but low sensitivity to detect abnormalities. CONCLUSIONS The prevalence of hemostatic abnormalities in both patients with and without reported bleeding symptoms was 9%-10%. This suggests that the guideline-based questionnaire cannot differentiate between patients with and without abnormalities, while the discriminative power of the screening modalities is also limited.
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Affiliation(s)
- Minka J. Vries
- Laboratory for Clinical Thrombosis and HaemostasisDepartment of BiochemistryCardiovascular Research Institute MaastrichtMaastricht UniversityMaastrichtThe Netherlands
| | - Paola E. van der Meijden
- Laboratory for Clinical Thrombosis and HaemostasisDepartment of BiochemistryCardiovascular Research Institute MaastrichtMaastricht UniversityMaastrichtThe Netherlands
- Thrombosis Expertise CentreMaastricht University Medical CentreMaastrichtThe Netherlands
| | - Gerhardus J. Kuiper
- Department of AnaesthesiologyMaastricht University Medical CentreMaastrichtThe Netherlands
| | - Patricia J. Nelemans
- Department of EpidemiologySchool for Public Health and Primary CareMaastricht University Medical CentreMaastrichtThe Netherlands
| | - Rick J. Wetzels
- Central Diagnostic LaboratoryMaastricht University Medical CentreMaastrichtThe Netherlands
| | - René G. van Oerle
- Laboratory for Clinical Thrombosis and HaemostasisDepartment of BiochemistryCardiovascular Research Institute MaastrichtMaastricht UniversityMaastrichtThe Netherlands
- Central Diagnostic LaboratoryMaastricht University Medical CentreMaastrichtThe Netherlands
| | - Marcus D. Lancé
- Department of AnaesthesiologyMaastricht University Medical CentreMaastrichtThe Netherlands
| | - Hugo ten Cate
- Laboratory for Clinical Thrombosis and HaemostasisDepartment of BiochemistryCardiovascular Research Institute MaastrichtMaastricht UniversityMaastrichtThe Netherlands
- Thrombosis Expertise CentreMaastricht University Medical CentreMaastrichtThe Netherlands
| | - Yvonne M. Henskens
- Laboratory for Clinical Thrombosis and HaemostasisDepartment of BiochemistryCardiovascular Research Institute MaastrichtMaastricht UniversityMaastrichtThe Netherlands
- Central Diagnostic LaboratoryMaastricht University Medical CentreMaastrichtThe Netherlands
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Haas T, Cushing MM, Varga S, Gilloz S, Schmugge M. Usefulness of multiple electrode aggregometry as a screening tool for bleeding disorders in a pediatric hospital. Platelets 2018; 30:498-505. [DOI: 10.1080/09537104.2018.1475631] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Thorsten Haas
- Department of Anesthesia, University Children’s Hospital Zurich, Zurich, Switzerland
| | - Melissa M. Cushing
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Stephanie Varga
- Department of Anesthesia, University Children’s Hospital Zurich, Zurich, Switzerland
| | - Séverine Gilloz
- Department of Hematology, University Children’s Hospital Zurich, Zurich, Switzerland
| | - Markus Schmugge
- Department of Hematology, University Children’s Hospital Zurich, Zurich, Switzerland
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Beynon C, Wei S, Radbruch A, Capper D, Unterberg AW, Kiening KL. Preoperative assessment of haemostasis in patients undergoing stereotactic brain biopsy. J Clin Neurosci 2018; 53:112-116. [PMID: 29685415 DOI: 10.1016/j.jocn.2018.04.035] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2018] [Accepted: 04/09/2018] [Indexed: 11/26/2022]
Abstract
Parenchymal hemorrhage is considered a major risk factor for perioperative morbidity in patients undergoing stereotactic brain biopsy. Studies on patients undergoing surgical procedures have suggested that evaluation of prothrombin time (PT) and activated partial thromboplastin time (aPTT) is of limited value with regard to prevention of haemorrhagic complications. However, this issue has not yet been addressed in patients undergoing stereotactic biopsy of intracranial lesions. We retrospectively analysed the medical records of 159 consecutive patients undergoing stereotactic biopsy of supratentorial intracranial lesions during a three-year period. Laboratory values (PT, aPTT, platelet count) were reviewed as well as clinical characteristics, modalities of surgical treatment, histopathological results and the postoperative course of patients. The overall diagnostic yield was 93.7%. Histopathological examination revealed glioma (WHO°I: 5, WHO°II: 25, WHO°III: 23, WHO°IV: 65), lymphoma (n = 14), inflammation (n = 8) and other entities (n = 6). Surgery-associated neurological deficits occurred in 7 patients (4.4%) and completely resolved in 6 of these patients. CT-confirmed intracranial hemorrhage occurred in 2 patients (1.3%) and in both cases, histopathological examination revealed glioblastoma. Results of hemostatic parameters (PT: 99 ± 13%, aPTT: 24 ± 3s, platelet count: 274 ± 87 103/μL) were within normal range values in all patients and did not correlate with postsurgical morbidity. Standard assessment of haemostasis seems to be of limited value in patients with intracranial lesions undergoing stereotactic biopsy. Further studies regarding the intratumoural vasculature's impact on the risk of biopsy-related bleeding are necessary.
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Affiliation(s)
| | - Shilai Wei
- Department of Neurosurgery, Heidelberg University Hospital, Germany
| | - Alexander Radbruch
- Department of Neuroradiology, Heidelberg University Hospital, Germany; Department of Diagnostic and Interventional Radiology and Neuroradiology, Essen University Hospital, Germany
| | - David Capper
- Institute of Neuropathology, Heidelberg University Hospital, Germany
| | | | - Karl L Kiening
- Department of Neurosurgery, Heidelberg University Hospital, Germany; Division of Stereotactic Neurosurgery, Department of Neurosurgery, Heidelberg University Hospital, Germany
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Lubnin AY, Konovalov AN, Lasunin NV, Abramov TA, Bulanov AY, Galstyan GM, Polevodova OA, Moshkin AV, Gadzhieva OA, Manushkova AA. [Severe postoperative intracranial hemorrhagic complications in a neurosurgical patient with von Willebrand disease not diagnosed before surgery (a case report and literature review)]. Zh Vopr Neirokhir Im N N Burdenko 2018; 82:56-65. [PMID: 29927426 DOI: 10.17116/neiro201882356] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The article describes a rare clinical case of a patient with previously undiagnosed von Willebrand disease and basal meningioma; an intracranial neurosurgical intervention was complicated by delayed intracranial hematomas, both at the resected tumor site and distantly. The diagnosis of von Willebrand disease was established only after special hematology tests and only after surgery. Despite the use of specific therapy, the patient died due to intracranial hemorrhagic complications in the postoperative period. The paper discusses the problem of preoperative diagnosis of asymptomatic hemostasis disorders in neurosurgical patients and potential ways of its solution.
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Affiliation(s)
- A Yu Lubnin
- Burdenko Neurosurgical Institute, 4-ya Tverskaya-Yamskaya Str., 16, Moscow, Russia, 125047
| | - A N Konovalov
- Burdenko Neurosurgical Institute, 4-ya Tverskaya-Yamskaya Str., 16, Moscow, Russia, 125047
| | - N V Lasunin
- Burdenko Neurosurgical Institute, 4-ya Tverskaya-Yamskaya Str., 16, Moscow, Russia, 125047
| | - T A Abramov
- Burdenko Neurosurgical Institute, 4-ya Tverskaya-Yamskaya Str., 16, Moscow, Russia, 125047
| | - A Yu Bulanov
- City Clinical Hospital #52, Pekhotnaya Str., 53, Moscow, Russia, 123182
| | - G M Galstyan
- National Hematology Research Center, Novy Zykovskiy Proezd, 4, Moscow, Russia, 125167
| | - O A Polevodova
- National Hematology Research Center, Novy Zykovskiy Proezd, 4, Moscow, Russia, 125167
| | - A V Moshkin
- Burdenko Neurosurgical Institute, 4-ya Tverskaya-Yamskaya Str., 16, Moscow, Russia, 125047
| | - O A Gadzhieva
- Burdenko Neurosurgical Institute, 4-ya Tverskaya-Yamskaya Str., 16, Moscow, Russia, 125047
| | - A A Manushkova
- Burdenko Neurosurgical Institute, 4-ya Tverskaya-Yamskaya Str., 16, Moscow, Russia, 125047
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Schneider T, Siegemund T, Siegemund R, Petros S. Thrombin generation and rotational thromboelastometry in the healthy adult population. Hamostaseologie 2017; 35:181-6. [DOI: 10.5482/hamo-14-08-0033] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Accepted: 12/05/2014] [Indexed: 11/05/2022] Open
Abstract
SummaryPublished data on thrombin generation variables and their correlation with thrombo - elastometry in the healthy population are scarce. This study aimed at assessing thrombin generation in adults and its correlation to classical rotational thromboelastometry (ROTEM).Thrombin generation was measured in platelet-poor plasma from healthy volunteers using the calibrated automated thrombogram (CAT) with 1 and 5 pmol/l tissue factor final concentration. Lag time, thrombin peak, time to thrombin peak and endogenous thrombin potential (ETP) were analyzed. ROTEM was performed without activator (NATEM) and data for clotting time, alpha angle, clot formation time and maximum clot firmness were correlated with those of thrombin generation.Altogether 132 persons (72 men, 60 women; median age: 48.0 years) were included. There was a positive non-linear correlation for age versus lag time (p < 0.001) and time to peak (p = 0.001), and almost linear correlation for age versus thrombin peak (p = 0.024) and ETP (p = 0.001), although with a moderate regression slope. Regarding ROTEM, there was a positive correlation between age and maximum clot firmness and alpha angle (p = 0.001), but a negative correlation between age and clotting time (p = 0.039). Comparing both assays, thrombin peak and ETP measured with a final tissue factor concentration of 5 pmol/l correlated significantly with alpha angle and maximum clot firmness.The age-related changes in CAT and ROTEM variables among adults are not linear. There is a significant correlation, although with a moderate slope, between data from CAT measured with 5 pmol/l tissue factor and ROTEM.
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Fabbro M, Winkler AM, Levy JH. Technology: Is There Sufficient Evidence to Change Practice in Point-of-Care Management of Coagulopathy? J Cardiothorac Vasc Anesth 2017; 31:1849-1856. [DOI: 10.1053/j.jvca.2017.05.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Indexed: 01/30/2023]
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Filipescu D, Bănăţeanu R, Beuran M, Burcoş T, Corneci D, Cristian D, Diculescu M, Dobrotă A, Droc G, Isacoff D, Goşa D, Grinţescu I, Lupu A, Mirea L, Posea C, Stanca O, Ştefan M, Tomescu D, Tudor C, Ungureanu D, Mircescu G. Perioperative Patient Blood Management Programme. Multidisciplinary recommendations from the Patient Blood Management Initiative Group. Rom J Anaesth Intensive Care 2017; 24:139-157. [PMID: 29090267 DOI: 10.21454/rjaic.7518.242.fil] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Patients with untreated anaemia or iron deficiency who undergo surgical procedures have an increased risk for mortality and morbidity. Patient Blood Management programmes address this issue worldwide and try to improve patient outcomes through a complex set of measures targeting anaemia correction, minimisation of bleeding and improvement of anaemia tolerance, in all phases of perioperative care. The Patient Blood Management Initiative Group is a multidisciplinary team of physicians from specialties including anaesthesiology, nephrology, surgery, orthopaedics, haematology, gastroenterology and transfusion medicine. The team has elaborated ten recommendations, divided into five categories, in order to implement a Patient Blood Management programme in Romania, using the most recent and relevant evidence. The document was discussed during three meetings which took place during October 2016 and May 2017 and the result was modified and updated via e-mail.
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Woll C, Smith PB, Fox JW. Epidemiology of preoperative hematologic assessment of children cared for in a pediatric emergency department. Am J Emerg Med 2017; 36:33-37. [PMID: 28669694 DOI: 10.1016/j.ajem.2017.06.055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 06/16/2017] [Accepted: 06/27/2017] [Indexed: 10/19/2022] Open
Abstract
OBJECTIVE To assess frequency of preoperative hematologic testing in a tertiary care pediatric emergency department (PED) and how often these values predict clinical outcome or change management decisions. METHODS Single-center retrospective cohort study in a tertiary-care children's hospital PED. Patients 0-18years old, presenting between July 1, 2009-July 1, 2011, ultimately undergoing a surgical procedure within 48h of presentation were included. Patients were defined as having "preoperative" hematologic assessment if these studies were performed solely because the child was going to the operative suite. Patients who met trauma team activation criteria, underwent neurosurgical procedures, or had laboratory studies performed prior to PED arrival were excluded. The primary outcome was the prevalence of preoperative laboratory assessment. RESULTS 528 children were included, of whom 301 (57%) underwent preoperative hematologic laboratory evaluations. Of these 301 patients, 115 (38%) had abnormal hematologic parameters, and only 3 (1%) of these patients had their perioperative management changed. One additional child had intraoperative bleeding that required blood products but did not undergo preoperative hematologic assessment. All four children had medical histories that would have identified their risk for perioperative bleeding events. CONCLUSION Preoperative hematologic laboratory assessment occurs frequently in children initially cared for in a tertiary care pediatric emergency department who subsequently undergo operative interventions. Although age-based abnormal hematologic values are often found, rarely are these abnormalities clinically significant. This study suggests that children cared for in a PED without a history concerning for an increased risk of perioperative bleeding does not require preoperative hematologic assessment.
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Affiliation(s)
- Christopher Woll
- Department of Pediatrics, Duke University School of Medicine, 3201 Erwin Road, Durham, NC, USA, 27710.
| | - P Brian Smith
- Department of Pediatrics, Duke University School of Medicine, 3201 Erwin Road, Durham, NC, USA, 27710.
| | - James Walter Fox
- Department of Pediatrics, Duke University School of Medicine, 3201 Erwin Road, Durham, NC, USA, 27710.
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Favaloro EJ. Clinical utility of closure times using the platelet function analyzer-100/200. Am J Hematol 2017; 92:398-404. [PMID: 27935090 DOI: 10.1002/ajh.24620] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Revised: 11/21/2016] [Accepted: 11/28/2016] [Indexed: 01/02/2023]
Abstract
The "platelet function analyzer" (PFA)-100 was first introduced to us in 1995. Since then, the instrument has appeared in over 50 reviews and almost 1000 publications. Recently, the PFA-100 has been "upgraded" to the PFA-200, which has transformed the user interface and electronic management, but retained the fundamental mechanics, and essentially provides the same results. The PFA-100/200 has conceivable clinical utility to screen for von Willebrand Disease (VWD) and platelet disorders, and in monitoring desmopressin (DDAVP) therapy in both, and possibly anti-platelet therapy. Its great strengths are its usage simplicity and sensitivity to conditions affecting primary hemostasis. However, as a "global" test, its limitation is that closure time (CT) test results are neither predictive of, nor specific for, any individual disorder. However, utilized properly, the PFA-100/200 reflects a valuable addition to hemostasis laboratories involved in identification or therapeutic-monitoring of disorders of primary hemostasis.
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Affiliation(s)
- Emmanuel J. Favaloro
- Department of Haematology; Institute of Clinical Pathology and Medical Research (ICPMR), Sydney Centres for Thrombosis and Haemostasis, NSW Health Pathology, Westmead Hospital; NSW Australia
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Lee AJ, Kim SG. Utility of preoperative in vitro platelet function tests for predicting bleeding risk in patients undergoing functional endoscopic sinus surgery. J Blood Med 2016; 7:235-238. [PMID: 27799837 PMCID: PMC5085293 DOI: 10.2147/jbm.s117669] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background It is necessary to predict the bleeding risk in patients undergoing functional endoscopic sinus surgery (FESS). To evaluate the adequacy of primary hemostasis, preoperative hemostatic screening tests are used. In the present study, we determined whether there is a positive correlation between prolonged closure time (CT) with collagen/epinephrine (CT-epi), prothrombin time (PT), international normalized ratio (INR), activated partial thromboplastin time (aPTT) and bleeding during FESS. Patients and methods We reviewed the medical records of 90 patients without bleeding histories who had undergone FESS from March 2013 to June 2014. More than 200 mL of blood loss was defined as moderate bleeding during surgery. With respect to bleeding during surgery, we determined the sensitivity, specificity, negative predictive value (NPV) and positive predictive value (PPV) of CT-epi, PT, INR and aPTT. Results Of the 90 patients, 17 (18.9%) patients had preoperative prolonged CT values and three (17.6%) patients had bleeding. In comparison, five (6.8%) of the 73 (81.1%) patients who had undergone FESS with preoperative normal PFA values experienced bleeding (P=0.171). On the other hand, patients with prolonged PT values (2, 2.2%), prolonged INR values (3, 3.3%) or prolonged PTT values (1, 1.1%) had no bleeding episode. Preoperative CT had low sensitivity (44.4%) and PPV (23.5%). Conclusion During preoperative period, the hemostatic screening may not be helpful to detect the bleeding tendency in adult patients undergoing FESS. Routine measurement of CT-epi, PT, INR and aPTT for preoperative screening may not be recommended for FESS patients.
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Affiliation(s)
- A-Jin Lee
- Department of Laboratory Medicine, Catholic University of Daegu School of Medicine, Daegu, Republic of Korea
| | - Sang-Gyung Kim
- Department of Laboratory Medicine, Catholic University of Daegu School of Medicine, Daegu, Republic of Korea
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Woehrle D, Martinez M, Bolliger D. [Hereditary heterozygous factor VII deficiency in patients undergoing surgery : Clinical relevance]. Anaesthesist 2016; 65:746-754. [PMID: 27586406 DOI: 10.1007/s00101-016-0217-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 08/03/2016] [Accepted: 08/04/2016] [Indexed: 01/19/2023]
Abstract
BACKGROUND A hereditary deficiency in coagulation factor VII (FVII) may affect the international normalized ratio (INR) value. However, FVII deficiency is occasionally associated with a tendency to bleed spontaneously. We hypothesized that perioperative substitution with coagulation factor concentrates might not be indicated in most patients. METHODS In this retrospective data analysis, we included all patients with hereditary heterozygous FVII deficiency who underwent surgical procedures at the University Hospital Basel between December 2010 and November 2015. In addition, by searching the literature, we identified publications reporting patients with FVII deficiency undergoing surgical procedures without perioperative substitution. RESULTS We identified 22 patients undergoing 46 surgical procedures, resulting in a prevalence of 1:1500-2000. Coagulation factor concentrates were administered during the perioperative period in 15 procedures (33 %), whereas in the other 31 procedures (66 %), FVII deficiency was not substituted. No postoperative bleeding or thromboembolic events were reported. In addition, we found no differences in pre- and postoperative hemoglobin and coagulation parameters, with the exception of an improved postoperative INR value in the substituted group. In the literature review, we identified five publications, including 125 patients with FVII deficiency, undergoing 213 surgical procedures with no perioperative substitution. DISCUSSION Preoperative substitution using coagulation factor concentrates does not seem to be mandatory in patients with an FVII level ≥15 %. For decision-making on preoperative substitution, patient history of an increased tendency to bleed may be more important than the FVII level or increased INR value.
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Affiliation(s)
- D Woehrle
- Abteilung für Anästhesie, Hirslanden Klinik Birshof, Münchenstein, Basel, Schweiz
| | - M Martinez
- Abteilung für Hämatologie, Universitätsspital Basel, Basel, Schweiz
| | - D Bolliger
- Departement Anästhesie, Chirurgische Intensivbehandlung, Präklinische Notfallmedizin und Schmerztherapie, Universitätsspital Basel, Spitalstrasse 21, 4031, Basel, Schweiz.
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Abstract
AbstractBackground:Tonsillectomy is a common, low-risk procedure. Post-tonsillectomy haemorrhage remains the most serious complication. Recent nationwide studies in the UK have identified an increased morbidity and mortality for both high-risk and low-risk elective general surgery performed at the weekend.Methods:Data for tonsillectomies performed at a district general hospital over a three-year period were retrospectively reviewed. The same group of surgeons performed elective tonsillectomies on both weekends and weekdays. All patients who developed a post-tonsillectomy haemorrhage were identified and the day of original operation was noted.Results:Between 2010 and 2013, 2208 (94.00 per cent) elective tonsillectomies were performed on a weekday and 141 (6.00 per cent) were performed on the weekend. Post-tonsillectomy haemorrhages occurred in 104 patients (4.71 per cent) who underwent their procedure on a weekday and in 10 patients (7.09 per cent) who had their surgery at the weekend (p = 0.20).Conclusion:There is no difference in the rate of post-tonsillectomy haemorrhage for procedures performed on a weekday or weekend.
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Meybohm P, Richards T, Isbister J, Hofmann A, Shander A, Goodnough LT, Muñoz M, Gombotz H, Weber CF, Choorapoikayil S, Spahn DR, Zacharowski K. Patient Blood Management Bundles to Facilitate Implementation. Transfus Med Rev 2017; 31:62-71. [PMID: 27317382 DOI: 10.1016/j.tmrv.2016.05.012] [Citation(s) in RCA: 132] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 05/25/2016] [Accepted: 05/25/2016] [Indexed: 12/22/2022]
Abstract
More than 30% of the world's population are anemic with serious economic consequences including reduced work capacity and other obstacles to national welfare and development. Red blood cell transfusion is the mainstay to correct anemia, but it is also 1 of the top 5 overused procedures. Patient blood management (PBM) is a proactive, patient-centered, and multidisciplinary approach to manage anemia, optimize hemostasis, minimize iatrogenic blood loss, and harness tolerance to anemia. Although the World Health Organization has endorsed PBM in 2010, many hospitals still seek guidance with the implementation of PBM in clinical routine. Given the use of proven change management principles, we propose simple, cost-effective measures enabling any hospital to reduce both anemia and red blood cell transfusions in surgical and medical patients. This article provides comprehensive bundles of PBM components encompassing 107 different PBM measures, divided into 6 bundle blocks acting as a working template to develop institutions' individual PBM practices for hospitals beginning a program or trying to improve an already existing program. A stepwise selection of the most feasible measures will facilitate the implementation of PBM. In this manner, PBM represents a new quality and safety standard.
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Abstract
PURPOSE OF REVIEW Blood coagulation exists to halt excessive blood loss. It is paradoxical that surgery and trauma simultaneously represent major risk factors for both hemorrhagic and thrombotic complications. A summary of the available evidence used to guide contemporary approaches to perioperative care will be reviewed. RECENT FINDINGS Although the advent of factor-specific products has safely allowed for intervention on patients with congenital hemostatic defects, the presence of an increasingly complex surgical population (chronic liver disease, traumatic injuries, and requirements for chronic anticoagulation) has renewed concerns about hemorrhagic risks. However, the past three decades of clinical sciences have supported a re-emphasis on the prevention of venous thromboembolism (VTE), a major cause of morbidity and mortality in hospitalized surgical patients. There is now an abundance of data confirming the robust risk:benefit ratio of antithrombotic prophylaxis in the vast majority of surgical patients, regardless of their medical comorbidities. SUMMARY Perioperative hemorrhage is a natural risk of any surgical intervention and deserves careful evaluation and prompt intervention. However, in order to support ongoing efforts in the prevention of medical errors, the application of evidence-based guidelines for the prophylaxis of VTE in surgical patients must become a standard part of daily practice.
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Vaglio S, Prisco D, Biancofiore G, Rafanelli D, Antonioli P, Lisanti M, Andreani L, Basso L, Velati C, Grazzini G, Liumbruno GM. Recommendations for the implementation of a Patient Blood Management programme. Application to elective major orthopaedic surgery in adults. Blood Transfus 2016; 14:23-65. [PMID: 26710356 PMCID: PMC4731340 DOI: 10.2450/2015.0172-15] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Stefania Vaglio
- Italian National Blood Centre, National Institute of Health, Rome, Italy
- Department of Clinical and Molecular Medicine, “Sapienza” University of Rome, Rome, Italy
| | - Domenico Prisco
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Gianni Biancofiore
- Liver Transplant Anaesthesia and Critical Care, University Hospital Pisana, Pisa, Italy
| | - Daniela Rafanelli
- Immunohaematology and Transfusion Unit, Pistoia 3 Local Health Authority, Pistoia, Italy
| | - Paola Antonioli
- Department of Infection Prevention Control and Risk Management, Ferrara University Hospital, Ferrara, Italy
| | - Michele Lisanti
- 1 Orthopaedics and Trauma Section, University Hospital Pisana, Pisa, Italy
| | - Lorenzo Andreani
- 1 Orthopaedics and Trauma Section, University Hospital Pisana, Pisa, Italy
| | - Leonardo Basso
- Orthopaedics and Trauma Ward, Cottolengo Hospital, Turin, Italy
| | - Claudio Velati
- Transfusion Medicine and Immunohaematology Department of Bologna Metropolitan Area, Bologna, Italy, on behalf of Italian Society of Transfusion Medicine and Immunohaematology (SIMTI); Italian Society of Italian Society of Orthopaedics and Traumatology (SIOT); Italian Society of Anaesthesia, Analgesia, Resuscitation and Intensive Therapy (S.I.A.A.R.T.I.); Italian Society for the Study of Haemostasis and Thrombosis (SISET), and the National Association of Hospital Medical Directors (ANMDO) working group
| | - Giuliano Grazzini
- Italian National Blood Centre, National Institute of Health, Rome, Italy
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Thiele T, Kaftan H, Hosemann W, Greinacher A. Hemostatic management of patients undergoing ear-nose-throat surgery. GMS Curr Top Otorhinolaryngol Head Neck Surg 2015; 14:Doc07. [PMID: 26770281 PMCID: PMC4702056 DOI: 10.3205/cto000122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Perioperative hemostatic management is increasingly important in the field of otolaryngology. This review summarizes the key elements of perioperative risk stratification, thromboprophylaxis and therapies for bridging of antithrombotic treatment. It gives practical advice based on the current literature with focus on patients undergoing ENT surgery.
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Affiliation(s)
- Thomas Thiele
- Institute for Immunology and Transfusion Medicine, Section of Transfusion Medicine, University Medicine of Greifswald, Germany
| | - Holger Kaftan
- Department of Otolaryngology, Head & Neck Surgery, University Medicine of Greifswald, Germany
| | - Werner Hosemann
- Department of Otolaryngology, Head & Neck Surgery, University Medicine of Greifswald, Germany
| | - Andreas Greinacher
- Institute for Immunology and Transfusion Medicine, Section of Transfusion Medicine, University Medicine of Greifswald, Germany
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Shim SH, Kim JM, Woo HY, Shin KU, Koh JW, Park KH. Association Between Platelet Function and Disc Hemorrhage in Patients With Normal-Tension Glaucoma: A Prospective Cross-Sectional Study. Am J Ophthalmol 2015; 160:1191-1199.e1. [PMID: 26384167 DOI: 10.1016/j.ajo.2015.09.006] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 09/06/2015] [Accepted: 09/07/2015] [Indexed: 11/23/2022]
Abstract
PURPOSE To evaluate the association between platelet function and disc hemorrhage in patients with normal-tension glaucoma. DESIGN Prospective, cross-sectional study. METHODS Study involved a total of 315 subjects, including patients with normal-tension glaucoma and disc hemorrhage (n = 120), patients with normal-tension glaucoma without disc hemorrhage (n = 75), and healthy individuals (control group, n = 120). A detailed eye examination including visual field testing, color disc photography, optical coherence tomography scanning, and measurement of collagen/epinephrine closure time using a platelet function analyzer were performed for all subjects. RESULTS The collagen/epinephrine closure time (s) as measured by the platelet function analyzer was approximately 14%-24% longer in the normal-tension glaucoma and disc hemorrhage group compared with the other groups (141.92 ± 53.44 [with normal-tension glaucoma and disc hemorrhage] vs 124.60 ± 46.72 [with normal-tension glaucoma without disc hemorrhage] vs 114.84 ± 34.84 [healthy individuals], 1-way analysis of variance test, P < .001). The activated partial thromboplastin time (s) value of the normal-tension glaucoma with disc hemorrhage group was also higher than the control group. Stepwise multiple logistic regression analysis revealed that only a longer collagen/epinephrine closure time (OR adjusted for age, sex, prothrombin time, activated partial thromboplastin time, diabetes mellitus, hypertension, hypotension, heart disease, hypothyroidism, migraine, stroke, hypercholesterolemia: 2.94; 95% CI: 1.40-6.17) was independently associated with disc hemorrhage. A similar trend was observed when platelet function was compared among the 3 groups with respect to age. CONCLUSIONS Our results suggest that platelet function is significantly associated with disc hemorrhage in patients with normal-tension glaucoma. Delayed absorption resulted from prolonged bleeding due to delayed platelet aggregation may have an effect on the detectability of disc hemorrhage in patients with normal-tension glaucoma.
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Lippi G, Pasalic L, Favaloro EJ. Detection of mild inherited disorders of blood coagulation: current options and personal recommendations. Expert Rev Hematol 2015; 8:527-42. [DOI: 10.1586/17474086.2015.1039978] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Sporbeck B, Bechara FG, Häfner HM, Koenen W, Kolk A, Koscielny J, Meissner M, Pokrywka A, Schirmer S, Strömer K, Löser C, Nast A. S3-Leitlinie zum Umgang mit Antikoagulation bei Operationen an der Haut. J Dtsch Dermatol Ges 2015. [DOI: 10.1111/ddg.12576_suppl] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Birte Sporbeck
- Division of Evidence Based Medicine, Charité - Universitätsmedizin Berlin
| | | | | | | | - Andreas Kolk
- Klinik und Poliklinik für Mund-, Kiefer- und Gesichtschirurgie, Klinikum rechts der Isar, Technische Universität München
| | - Jürgen Koscielny
- Institut für Transfusionsmedizin, Charité - Universitätsmedizin Berlin
| | - Markus Meissner
- Klinik für Dermatologie, Venerologie und Allergologie, Universitätsklinikum Frankfurt
| | - Anna Pokrywka
- Klinik für Dermatologie, Venerologie und Allergologie, Charité - Universitätsmedizin Berlin
| | - Steffen Schirmer
- Klinik für Plastische, Wiederherstellungs- und Ästhetische Chirurgie - Handchirurgie, Klinikum Bielefeld Mitte
| | - Klaus Strömer
- Niedergelassene Dermatologe, Gemeinschaftspraxis Dr. Strömer / Deden, Mönchengladbach
| | - Christoph Löser
- Hautklinik, Hauttumorzentrum, Klinikum der Stadt Ludwigshafen am Rhein gGmbH
| | - Alexander Nast
- Division of Evidence Based Medicine, Charité - Universitätsmedizin Berlin
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Sporbeck B, Georges Bechara F, Häfner HM, Koenen W, Kolk A, Koscielny J, Meissner M, Pokrywka A, Schirmer S, Strömer K, Löser C, Nast A. S3 guidelines for the management of anticoagulation in cutaneous surgery. J Dtsch Dermatol Ges 2015; 13:346-56. [PMID: 25819254 DOI: 10.1111/ddg.12576] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND An increasing number of patients are being treated with anticoagulants and platelet inhibitors. Whenever surgical procedures of the skin are required, questions arise regarding the perioperative management of anticoagulation. METHODS Development of S3 guidelines following the requirements of the Association of Scientific Medical Societies, systematic literature search and analysis, use of GRADE methodology, structured consensus conference using a nominal group process. RESULTS During cutaneous surgery, treatment with acetylsalicylic acid (ASA) should be continued if medically necessary. In procedures with a higher risk of bleeding and a positive bleeding history, INR should be determined preoperatively. Surgical procedures of the skin with a higher risk of bleeding should not be performed if the INR is above therapeutic range. Bridging from vitamin K antagonists (VKA) to heparin should not be performed just because of the surgery of the skin. As to direct-acting oral anticoagulants, the last dose should be taken 24 h preoperatively. CONCLUSIONS The recommendations issued by the German guidelines group are mostly in line with recommendations provided by other guidelines. The American ìChest-Guidelineì recommends continuing VKAs and acetylsalicylic acid during minor dermatologic procedures. In their guidelines, the German College of General Practitioners and Family Physicians considers an INR of 2 to be adequate in surgical procedures on the skin.
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Affiliation(s)
- Birte Sporbeck
- Division of Evidence Based Medicine, Charité - Universitätsmedizin Berlin
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Haas T, Weiss M, Staubli G, Schmugge M. Präklinische Gerinnungsnotfälle bei Kindern. Notf Rett Med 2015; 18:42-48. [DOI: 10.1007/s10049-014-1949-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Abstract
ORL procedures are the most common operations in children – an optimal anesthetic management provides an uncomplicated, safe perioperative process with as little discomfort for the child as possible. Children at risk must already be identified preoperatively: the combination of ORL surgery, airway susceptibility and age below 3 years can increase the risk of perioperative respiratory adverse events. Postoperatively, it is important to prevent complications such as pain and PONV by dedicated prevention and treatment strategies, as well as to recognize and treat respiratory or circulatory complications competently. Interdisciplinary guidelines and agreements as well as the overall competence of the team have the potential to improve patient safety and outcome in children.
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Affiliation(s)
- Karin Becke
- Abteilung für Anästhesie und Intensivmedizin, Klinik Hallerwiese/Cnopf'sche Kinderklinik, Diakonie Neuendettelsau, Nürnberg, Germany
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Salar O, Holley J, Baker B, Ollivere BJ, Moran CG. Omitting pre-operative coagulation screening tests in hip fracture patients: stopping the financial cascade? Injury 2014; 45:1938-41. [PMID: 25205647 DOI: 10.1016/j.injury.2014.08.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Accepted: 08/17/2014] [Indexed: 02/02/2023]
Abstract
BACKGROUND Coagulation screening continues as a standard of care in many hip fracture pathways despite the 2011 guidelines from the Association of Anaesthetists of Great Britain and Ireland (AAGBI) which recommend that such screening be performed only if clinically indicated. This study aims to evaluate the use of pre-operative coagulation screening and explore its financial impact. METHODS Prospective data was collected in accordance with the "Standardised Audit of Hip Fractures in Europe" (SAHFE) protocol. All patients admitted to our hospital with hip fractures during a 12-month period from November 2011 to November 2012 were analysed. Data including coagulation results and the use of vitamin K or blood products were collected retrospectively from the hospital computer system. Patient subgroup analysis was performed for intraoperative blood loss, post-operative blood units transfused, haematoma formation and gastrointestinal haemorrhage. RESULTS 814 hip fractures were analysed. 91.4% (n=744) had coagulation tests performed and 22.0% (n=164) had an abnormal result. Of these, 55 patients were taking warfarin leaving 109 patients who had abnormal results and were not taking warfarin. When this group (n=109) was compared to those who had normal test results (n=580) and to all other patients (n=705) there was no difference in intraoperative blood loss (p=0.79, 0.78), postoperative transfusion (p=0.38, 0.30), postoperative haematoma formation (p=0.79, 1.00), or gastrointestinal haemorrhage (p=0.45, 1.00), respectively. In those who were not taking warfarin, but had abnormal results, none had treatment to reverse their coagulopathy with either vitamin K or blood products. By omitting pre-operative coagulation tests in patients who are not taking warfarin, we estimate a financial saving of between £66,500 and £432,250 per annum. CONCLUSIONS This study supports the hypothesis that routine pre-operative coagulation screening is unnecessary in hip fracture patients unless they take warfarin or have a known coagulopathy. Moreover, its omission represents significant cost-saving potential.
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Affiliation(s)
- O Salar
- Department of Orthopaedics and Trauma, Queens Medical Centre, Derby Road, Nottingham NG7 2UH, Nottinghamshire, UK.
| | - J Holley
- Department of Orthopaedics and Trauma, Queens Medical Centre, Derby Road, Nottingham NG7 2UH, Nottinghamshire, UK
| | - B Baker
- Department of Orthopaedics and Trauma, Queens Medical Centre, Derby Road, Nottingham NG7 2UH, Nottinghamshire, UK
| | - B J Ollivere
- Department of Orthopaedics and Trauma, Queens Medical Centre, Derby Road, Nottingham NG7 2UH, Nottinghamshire, UK
| | - C G Moran
- Department of Orthopaedics and Trauma, Queens Medical Centre, Derby Road, Nottingham NG7 2UH, Nottinghamshire, UK
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Geraldo RB, Sathler PC, Lourenço AL, Saito MS, Cabral LM, Rampelotto PH, Castro HC. Platelets: still a therapeutical target for haemostatic disorders. Int J Mol Sci 2014; 15:17901-19. [PMID: 25295482 PMCID: PMC4227196 DOI: 10.3390/ijms151017901] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Revised: 08/26/2014] [Accepted: 09/23/2014] [Indexed: 11/16/2022] Open
Abstract
Platelets are cytoplasmatic fragments from bone marrow megakaryocytes present in blood. In this work, we review the basis of platelet mechanisms, their participation in syndromes and in arterial thrombosis, and their potential as a target for designing new antithrombotic agents. The option of new biotechnological sources is also explored.
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Affiliation(s)
- Reinaldo Barros Geraldo
- Programa de Pós-graduação em Ciências e Biotecnologia, Instituto de Biologia, Universidade Federal Fluminense (UFF), Niterói CEP 24210-130, RJ, Brazil.
| | - Plínio Cunha Sathler
- Programa de Pós-graduação em Patologia, Departamento de Patologia, Hospital Universitário Antônio Pedro (HUAP), Universidade Federal Fluminense (UFF), Niterói CEP 24030-215, RJ, Brazil.
| | - André Luiz Lourenço
- Programa de Pós-graduação em Patologia, Departamento de Patologia, Hospital Universitário Antônio Pedro (HUAP), Universidade Federal Fluminense (UFF), Niterói CEP 24030-215, RJ, Brazil.
| | - Max Seidy Saito
- Programa de Pós-graduação em Patologia, Departamento de Patologia, Hospital Universitário Antônio Pedro (HUAP), Universidade Federal Fluminense (UFF), Niterói CEP 24030-215, RJ, Brazil.
| | - Lucio M Cabral
- LabTIF, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro CEP 21941-590, RJ, Brazil.
| | - Pabulo Henrique Rampelotto
- Interdisciplinary Center for Biotechnology Research, Federal University of Pampa, Antônio Trilha Avenue, P.O. Box 1847, São Gabriel/RS 97300-000, Brazil.
| | - Helena Carla Castro
- Programa de Pós-graduação em Ciências e Biotecnologia, Instituto de Biologia, Universidade Federal Fluminense (UFF), Niterói CEP 24210-130, RJ, Brazil.
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