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Martinez-Lopez PR, Barroso-Gonzalez A. Anesthetic Implications of Factor XI Deficiency: A Clinical Case Study and Review of Literature. Cureus 2024; 16:e72594. [PMID: 39478767 PMCID: PMC11524335 DOI: 10.7759/cureus.72594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/28/2024] [Indexed: 11/02/2024] Open
Abstract
Factor XI deficiency, a rare but significant coagulopathy, poses unique challenges in perioperative management, particularly in obstetric settings. This review provides an in-depth exploration of the pathophysiology, diagnosis, and anesthetic implications of factor XI deficiency, thereby emphasizing the useful role of anesthesiologists. The variable bleeding phenotype of the disorder necessitates a nuanced understanding and tailored management strategies to mitigate severe perioperative bleeding risks. Conventional coagulation tests, while useful, often fall short in predicting bleeding risks, underscoring the importance of advanced diagnostic tools, such as viscoelastic testing. Viscoelastic testing provides real-time data on clot stability, which allows for immediate intervention and more targeted therapeutic strategies compared to standard coagulation tests. A clinical case of a 25-year-old patient with factor XI deficiency undergoing emergency surgery for an ectopic pregnancy illustrates the application of viscoelastic testing in managing acute bleeding and optimizing patient outcomes and advocates for the development of standardized protocols, continuous monitoring techniques, and enhanced training programs to improve the perioperative care of patients with factor XI deficiency, providing anesthesiologists with the tools necessary to navigate the complexities of factor XI deficiency in the perioperative environment. Integrating these advanced diagnostic and therapeutic approaches could significantly improve patient safety and surgical outcomes in patients with complex coagulopathy.
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Abstract
Factor XI (FXI) deficiency (hemophilia C or Rosenthal disease) was first described in the 1950s in a multigenerational family experiencing bleeding related to surgery and dental procedures. Managing patients with FXI deficiency presents several challenges, including a lack of correlation of bleeding symptoms with FXI activity levels, the large volume of fresh frozen plasma required to achieve hemostatic FXI levels, lack of availability of FXI concentrate in certain regions of the world, and the inherent thrombotic risk associated with replacement therapy. This article summarizes presentation, diagnosis, and management of patients with FXI deficiency in a variety of clinical settings.
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Affiliation(s)
| | - Jean Marie Connors
- Hematology Division, Brigham and Women's Hospital, Dana-Farber Cancer Institute, Harvard Medical School, 75 Francis Street, Boston, MA 02215, USA. https://twitter.com/connors_md
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Peterson W, Tse B, Martin R, Fralick M, Sholzberg M. Evaluating hemostatic thresholds for neuraxial anesthesia in adults with hemorrhagic disorders and tendencies: A scoping review. Res Pract Thromb Haemost 2021; 5:e12491. [PMID: 33977207 PMCID: PMC8105160 DOI: 10.1002/rth2.12491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 12/29/2020] [Accepted: 01/01/2021] [Indexed: 11/08/2022] Open
Abstract
Neuraxial anesthesia can be complicated by spinal or epidural hematoma and may result in permanent neurologic injury. There is a paucity of literature characterizing this serious complication in patients with congenital and acquired hemorrhagic disorders or tendencies. The objective of this scoping review was to describe the hemostatic laboratory parameters where neuraxial anesthesia has been administered with and without spinal and epidural hematoma in patients with preexisting hemorrhagic disorders and tendencies, including immune thrombocytopenia, gestational thrombocytopenia, thrombocytopenia associated with hypertensive disorders of pregnancy, platelet function disorders, von Willebrand disease, coagulation factor deficiencies, and fibrinogen disorders. A systematic search of Ovid MEDLINE, CINAHL, Embase, Scopus, and Web of Science was performed. Two authors independently reviewed all titles, abstracts, and full texts to determine study eligibility and extract data. Qualitative synthesis of 91 studies revealed significant gaps in our understanding of the risk of spinal and epidural hematoma in patients with hemorrhagic disorders and tendencies, including few studies of males and in nonobstetric settings. Most reviewed articles were small, retrospective studies at high risk for potential bias. With such low-quality data, we were unable to provide any true estimates of the risk of spinal or epidural hematoma for these patients, nor could we attribute any specific hemostatic or laboratory values to increased risk of hematoma. There is a need both for larger and more rigorously designed and reported studies on this subject and for structured, comprehensive recommendations for safe administration and removal of neuraxial anesthesia in patients with hemorrhagic disorders and tendencies.
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Affiliation(s)
- Wynn Peterson
- Division of Medicine University of Toronto Toronto ON Canada
| | - Brandon Tse
- Faculty of Medicine University of Toronto Toronto ON Canada
| | - Rachel Martin
- Department of Anesthesia St. Michael's Hospital Toronto ON Canada
| | - Michael Fralick
- Sinai Health System and the Department of Medicine University of Toronto Toronto ON Canada
| | - Michelle Sholzberg
- Division of Hematology Department of Medicine and Department of Laboratory Medicine and Pathobiology St. Michael's Hospital Toronto ON Canada
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Mandal S, Gami S, Shah S. A Case Report on an Extremely Rare Disease: Factor XI Deficiency. Cureus 2020; 12:e10746. [PMID: 33150098 PMCID: PMC7603878 DOI: 10.7759/cureus.10746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/01/2020] [Indexed: 11/23/2022] Open
Abstract
Factor XI deficiency is a rare condition with an estimated prevalence of about one in one million and is more commonly seen in Ashkenazi Jews (8-9%) due to consanguinity. It occurs because of mutations in the factor XI gene (F11) on chromosome 4(4q35). Patients with this disorder may remain asymptomatic until they undergo any surgical procedure or delivery. The most common sites of bleeding include the oral cavity, pharynx, and genitourinary tract, where there is high fibrinolytic activity. Our patient was asymptomatic his whole life. He never had spontaneous bleeding or bruising; however, he had severe bleeding requiring multiple transfusions of fresh frozen plasma during and after surgeries.
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Affiliation(s)
- Shobha Mandal
- Internal Medicine, Guthrie Robert Packer Hospital, Sayre, USA
| | - Sumit Gami
- Medicine, Universal College of Medical Sciences, Bhairahawa, NPL
- Internal Medicine, Nidan Hospital, Kathmandu, NPL
| | - Surendra Shah
- Hematology and Oncology, Guthrie Robert Packer Hospital, Sayre, USA
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Wheeler AP, Hemingway C, Gailani D. The clinical management of factor XI deficiency in pregnant women. Expert Rev Hematol 2020; 13:719-729. [PMID: 32437625 DOI: 10.1080/17474086.2020.1772745] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
INTRODUCTION Factor XI (FXI) deficiency is associated with highly variable bleeding, including excessive gynecologic and obstetrical bleeding. Since approximately 20% of FXI-deficient women will experience pregnancy-related bleeding, careful planning and knowledge of appropriate hemostatic management is pivotal for their care. AREAS COVERED In this manuscript, authors present our current understanding of the role of FXI in hemostasis, the nature of the bleeding phenotype caused by its deficiency, and the impact of deficiency on obstetrical care. The authors searched PubMed with the terms, 'factor XI', 'factor XI deficiency', 'women', 'pregnancy', and 'obstetrics' to identify literature on these topics. Expectations of pregnancy-related complications in women with FXI deficiency, including antepartum, abortion-related, and postpartum bleeding, as well as bleeding associated with regional anesthesia are discussed. Recommendations for the care of these women are considered, including guidance for management of prophylactic care and acute bleeding. EXPERT COMMENTARY FXI deficiency results in a bleeding diathesis in some, but not all, patients, making treatment decisions and clinical management challenging. Currently available laboratory assays are not particularly useful for distinguishing patients with FXI deficiency who are prone to bleeding from those who are not. There is a need for alternative testing strategies to address this limitation.
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Affiliation(s)
- Allison P Wheeler
- Department of Pathology, Microbiology and Immunology, Vanderbilt University , Nashville, TN, USA.,Department of Pediatrics, Vanderbilt University , Nashville, TN, USA
| | - Celeste Hemingway
- Department of Obstetrics and Gynecology, Vanderbilt University , Nashville, TN, USA
| | - David Gailani
- Department of Pathology, Microbiology and Immunology, Vanderbilt University , Nashville, TN, USA
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Gerber GF, Klute KA, Chapin J, Bussel J, DeSancho MT. Peri- and Postpartum Management of Patients With Factor XI Deficiency. Clin Appl Thromb Hemost 2020; 25:1076029619880262. [PMID: 31595781 PMCID: PMC6900674 DOI: 10.1177/1076029619880262] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Factor XI (FXI) deficiency is an uncommon autosomal disorder with variable bleeding phenotype, making peripartum management challenging. We describe our experience in pregnant women with FXI deficiency and identify strategies to minimize the use of hemostatic agents and increase utilization of neuraxial anesthesia. Electronic records of 28 pregnant women with FXI deficiency seen by a hematology service in an academic medical center from January 2006 to August 2018 were reviewed. Data on bleeding, obstetric history, peripartum management, and FXI activity were collected. Partial FXI deficiency was defined as >20 IU/dL and severe <20 IU/dL. Median FXI activity was 42 IU/dL (range <1-73 IU/dL), and median activated partial thromboplastin time was 32.2 seconds (range: 27.8-75 seconds). There were 64 pregnancies: 53 (83%) live births and 11 (17%) pregnancy losses. Postpartum hemorrhage occurred in 9 (17%) pregnancies. Antifibrinolytic agents and fresh frozen plasma were used only in women with severe deficiency (42% with bleeding and 17% with no bleeding phenotype, respectively). Neuraxial anesthesia was successfully administered in 32 (59%) deliveries. Most women with FXI deficiency have uncomplicated pregnancies and deliveries with minimal hemostatic support. Neuraxial anesthesia can be safely administered in most women.
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Affiliation(s)
- Gloria F Gerber
- Department of Medicine, Weill Cornell Medicine, New York Presbyterian Hospital, NY, USA
| | - Kelsey A Klute
- Division of Oncology and Hematology, University of Nebraska Medical Center, Omaha, NE, USA
| | - John Chapin
- Clinical Development, CRISPR Therapeutics, Cambridge, MA, USA
| | - James Bussel
- Division of Hematology-Oncology, Department of Pediatrics, Weill Cornell Medicine, New York Presbyterian Hospital, NY, USA
| | - Maria T DeSancho
- Division of Hematology-Oncology, Department of Medicine, Weill Cornell Medicine, New York Presbyterian Hospital, NY, USA
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Thomas O, Lybeck E, Flisberg P, Schött U. Pre- to postoperative coagulation profile of 307 patients undergoing oesophageal resection with epidural blockade over a 10-year period in a single hospital: implications for the risk of spinal haematoma. Perioper Med (Lond) 2017; 6:14. [PMID: 29034090 PMCID: PMC5628458 DOI: 10.1186/s13741-017-0070-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 09/11/2017] [Indexed: 12/18/2022] Open
Abstract
Background Epidural anaesthesia and analgesia are indicated for oesophageal surgery. A rare but serious complication is spinal haematoma, which can occur on insertion, manipulation or withdrawal of catheters. Evidence and guidelines are vague regarding which tests are appropriate and how to interpret their results. We aimed to describe how routine coagulation test results change during oesophagectomy’s perioperative course. Methods Following ethical approval, we retrospectively identified patients who had undergone oesophagectomy between 2002 and 2012. Blood test results and details of operations, haemorrhage and complications were recorded and analysed with Excel and R. A literature search was conducted using the PubMed terms ‘epidural’ AND ‘coagulation’ AND English language. Relevant articles published in 2000 and after were included. Results Three hundred and seven patients received a thoracic epidural infusion with bupivacaine and morphine while 51 received an intravenous morphine infusion. Tests taken preoperatively and before the planned withdrawal of the epidural catheter demonstrated increases in all three measures: aPTT (activated partial thromboplastin time), PT-INR (prothrombin international normalised ratio) and platelet count (Plc). Postoperative thrombocytopenia was almost non-existent while aPTT or PT-INR was elevated above the reference range in 129/307 patients: aPTT was elevated in 116/307 while PT-INR was elevated in 32/307. This is too small a sample to allow meaningful estimation of risk of spinal haematoma: it may be as high as 2.3%. The literature search returned 275 articles, of which 57 were relevant. Twenty-one concerned the natural history of postoperative coagulation; 16, the incidence of and risk factors for spinal haematoma; and 5, evaluation of specific blood tests. Postoperative coagulation is characterised by thrombocytosis and transient moderately abnormal routine coagulation test results. Viscoelastic tests are not validated in the stable postoperative setting. Conclusions Screening for coagulopathy before removal of epidural catheters is of unclear benefit since elevated aPTT and PT-INR are usual and may not indicate hypocoagulation. A thorough clinical assessment is important. We nevertheless recommend caution when being presented with elevated routine tests of coagulation before withdrawing an epidural catheter: viscoelastic haemostatic tests may have a role in testing before withdrawal of epidural catheters but they are so far not validated. Future research should include advanced coagulation analysis as soon as a patient is unfortunate enough to have a spinal haematoma. Electronic supplementary material The online version of this article (10.1186/s13741-017-0070-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Owain Thomas
- Department of Anaesthesiology and Intensive Care Medicine, Institute of Clinical Sciences, Lund, Medical Faculty, University of Lund, 221 00 Lund, Sweden.,Department of Paediatric Anaesthesia and Intensive Care, SUS Lund University Hospital, 22185 Lund, Sweden
| | | | - Per Flisberg
- Department of Anaesthesiology and Intensive Care Medicine, Institute of Clinical Sciences, Lund, Medical Faculty, University of Lund, 221 00 Lund, Sweden.,Department of Anaesthesia and Intensive Care, Helsingborg Hospital, Södra Vallgatan 5, 254 37 Helsingborg, Sweden
| | - Ulf Schött
- Department of Anaesthesiology and Intensive Care Medicine, Institute of Clinical Sciences, Lund, Medical Faculty, University of Lund, 221 00 Lund, Sweden.,Department of Anaesthesia and Intensive Care, SUS Lund University Hospital, 221 85 Lund, Sweden
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Verghese L, Tingi E, Thachil J, Hay C, Byrd L. Management of parturients with Factor XI deficiency—10 year case series and review of literature. Eur J Obstet Gynecol Reprod Biol 2017. [DOI: 10.1016/j.ejogrb.2017.06.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Günaydın B, Özek A, Büyüktaşkın F, Özterlemez NT. Spinal Anaesthesia for Caesarean Delivery in a Parturient with Partial Factor XI Deficiency. Turk J Anaesthesiol Reanim 2017; 45:63-64. [PMID: 28377844 PMCID: PMC5367730 DOI: 10.5152/tjar.2017.76892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 12/12/2016] [Indexed: 06/07/2023] Open
Affiliation(s)
- Berrin Günaydın
- Department of Anaesthesiology, Gazi University School of Medicine, Ankara, Turkey
| | - Aykut Özek
- Department of Gynecology and Obstetrics, Gazi University School of Medicine, Ankara, Turkey
| | - Fırat Büyüktaşkın
- Department of Gynecology and Obstetrics, Gazi University School of Medicine, Ankara, Turkey
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12
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Adıbelli B, Araz C, Ersoy Z, Kayhan Z. Anaesthesia Management of a Patient with Factor XI Deficiency. Turk J Anaesthesiol Reanim 2016; 44:149-51. [PMID: 27366578 DOI: 10.5152/tjar.2016.90267] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2015] [Accepted: 12/02/2015] [Indexed: 11/22/2022] Open
Abstract
Factor XI deficiency is an extremely rare disease presenting no clinical symptoms, unless there is an inducing reason such as trauma or surgery. Normally, factor levels are in the range of 70-150 U dL-1 in healthy subjects. Although no clinical symptoms are seen, only high levels of aPTT can be found. Once a prolongation is detected in aPTT, factor XI deficiency should be suspected and factor levels should be analysed. With careful preoperative preparations in factor-deficient people, preoperative and postoperative complications can be decreased. In this case report, management of anaesthesia during total hip arthroplasty of a patient with factor XI deficiency is presented.
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Affiliation(s)
- Bilgehan Adıbelli
- Department of Anaesthesiology, Başkent University School of Medicine, Ankara, Turkey
| | - Coşkun Araz
- Department of Anaesthesiology, Başkent University School of Medicine, Ankara, Turkey
| | - Zeynep Ersoy
- Department of Anaesthesiology, Başkent University School of Medicine, Ankara, Turkey
| | - Zeynep Kayhan
- Department of Anaesthesiology, Başkent University School of Medicine, Ankara, Turkey
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Wiewel-Verschueren S, Arendz IJ, M. Knol H, Meijer K. Gynaecological and obstetrical bleeding in women with factor XI deficiency - a systematic review. Haemophilia 2015; 22:188-195. [DOI: 10.1111/hae.12856] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/24/2015] [Indexed: 12/15/2022]
Affiliation(s)
- S. Wiewel-Verschueren
- Division of Haemostasis and Thrombosis; Department of Haematology; University of Groningen University Medical Centre Groningen; Groningen The Netherlands
- Department of Obstetrics and Gynaecology; University of Groningen University Medical Centre Groningen; Groningen The Netherlands
| | - I. J. Arendz
- Department of Obstetrics and Gynaecology; University of Groningen University Medical Centre Groningen; Groningen The Netherlands
| | - H. M. Knol
- Department of Obstetrics and Gynaecology; University of Groningen University Medical Centre Groningen; Groningen The Netherlands
- Isala Clinics Department of Obstetrics and Gynaecology; Zwolle The Netherlands
| | - K. Meijer
- Division of Haemostasis and Thrombosis; Department of Haematology; University of Groningen University Medical Centre Groningen; Groningen The Netherlands
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Lee SE, Choi YJ, Chi SI, Kim HJ, Seo KS. Factor XI deficiency and orthognathic surgery: a case report on anesthesia management. J Dent Anesth Pain Med 2015; 15:25-29. [PMID: 28879255 PMCID: PMC5564066 DOI: 10.17245/jdapm.2015.15.1.25] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Revised: 04/02/2015] [Accepted: 04/02/2015] [Indexed: 11/15/2022] Open
Abstract
Factor XI deficiency (Hemophilia C) is a very rare autosomal recessive bleeding disorder. Patients with factor XI deficiency do not typically show any spontaneous bleeding or specific symptoms. Sometimes those who have this disorder are identified during special situations such as trauma or surgery. Orthognathic surgery is particularly associated with a high bleeding risk. Therefore, great care must be taken when treating patients with bleeding disorders such as factor XI deficiency. There are a few reports that address the management of patients with bleeding disorders during orthognathic surgery. The current report describes a patient with factor XI deficiency who underwent Le Fort I osteotomy together with bilateral sagittal split osteotomy. The patient's condition was assessed using both rotation thromboelastometry (ROTEM™) and noninvasive measurements of total hemoglobin (SpHb) using Masimo Radical 7 (Masimo Co. CA, USA).
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Affiliation(s)
- Soo Eon Lee
- Department of Dental Anesthesiology, Seoul National University Dental Hospital, Seoul, Korea
| | - Yoon Ji Choi
- Department of Dental Anesthesiology, Seoul National University Dental Hospital, Seoul, Korea
| | - Seong-In Chi
- Department of Dental Anesthesiology, Seoul National University Dental Hospital, Seoul, Korea
| | - Hyun-Jeong Kim
- Department of Dental Anesthesiology, Seoul National University Dental Hospital, Seoul, Korea
| | - Kwang-Suk Seo
- Department of Dental Anesthesiology, Seoul National University Dental Hospital, Seoul, Korea
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Perioperative management of factor XI deficiency in a patient undergoing hip arthroplasty. J Anesth 2013; 28:618-20. [DOI: 10.1007/s00540-013-1771-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Accepted: 12/06/2013] [Indexed: 10/25/2022]
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17
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Schaal JV, Jarrassier A, Renner J, Salvadori A, Pelletier C, Villevieille T. [Labour epidural analgesia for a parturient with a factor XI deficiency: an ill-considered challenge or a reasonable risk?]. ACTA ACUST UNITED AC 2013; 32:436-8. [PMID: 23684431 DOI: 10.1016/j.annfar.2013.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Accepted: 04/04/2013] [Indexed: 11/17/2022]
Abstract
The authors report the performance of a labour epidural analgesia in a 26-year-old parturient presenting a moderate factor XI (FXI) deficiency. If haemostasis disorders usually contraindicate an epidural analgesia (with a risk of epidural haematoma), a moderate FXI deficiency is not an absolute contraindication to perform such an epidural analgesia. Desmopressin, sometimes used in surgery to reduce the bleeding, was administered to withdraw the catheter in better haemostasis conditions. No neurological signs were observed.
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Affiliation(s)
- J-V Schaal
- Département d'anesthésie-réanimation, hôpital d'instruction des armées Bégin, 69, avenue de Paris, 94163 Saint-Mandé, France
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Chow L, Farber MK, Camann WR. Anesthesia in the pregnant patient with hematologic disorders. Hematol Oncol Clin North Am 2011; 25:425-43, ix-x. [PMID: 21444039 DOI: 10.1016/j.hoc.2011.01.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The management of patients with hematologic disorders in pregnancy involves a multidisciplinary approach involving specialists from hematology, obstetrics, and anesthesiology. Whereas regional anesthesia has led to a decline in maternal morbidity and mortality, the presence of uncorrected coagulopathy or the use of anticoagulant or antithrombotic medications pose a special risk for the rare complication of an epidural hematoma after neuraxial anesthesia. This article briefly reviews the common principles of anesthesia for obstetric patients, provides an obstetric anesthesiologist's perspective on the implications of regional anesthesia in obstetrics, and enhances communication between the specialties.
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Affiliation(s)
- Lorraine Chow
- Department of Anesthesiology, Perioperative and Pain Medicine, Harvard Medical School, Brigham and Women's Hospital, Boston, MA 02115, USA
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Thornton P, Douglas J. Coagulation in pregnancy. Best Pract Res Clin Obstet Gynaecol 2010; 24:339-52. [DOI: 10.1016/j.bpobgyn.2009.11.010] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2009] [Accepted: 11/25/2009] [Indexed: 10/19/2022]
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