1
|
Curry N, Bowles L, Clark TJ, Lowe G, Mainwaring J, Mangles S, Myers B, Kadir RA. Gynaecological management of women with inherited bleeding disorders. Haemophilia 2022; 28:917-937. [PMID: 35976756 DOI: 10.1111/hae.14643] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 06/20/2022] [Accepted: 07/17/2022] [Indexed: 12/17/2022]
Abstract
Women with inherited bleeding disorders (IBDs) may present to healthcare professionals in a variety of ways and commonly will be encountered by either haematology or gynaecology services. Heavy menstrual bleeding is very often the first manifestation of an IBD. There is a wide variation in severity of bleeding for women with IBD and diagnosis and subsequent management of their condition requires multidisciplinary specialised care which is tailored to the individual and includes excellent cross-specialty communication between gynaecology and haematology teams. This guideline is intended for both haematologists and gynaecologists who are involved in the diagnosis and management of women with bleeding disorders. It sets out recommendations about how to investigate heavy menstrual bleeding (HMB), the commonest presentation for women with IBD to hospital services, to guide physicians about how to diagnose an IBD and covers the management of women with known IBD and HMB. The second section sets out recommendations for patients known to have IBD and covers management of patients with IBD in the setting of gynaecological surgery and management for all other non-surgical gynaecological situations.
Collapse
Affiliation(s)
- Nicola Curry
- Oxford Haemophilia and Thrombosis Centre, Oxford University Hospitals NHS Foundation Trust, and NIHR BRC Blood Theme, Oxford University, Oxford, UK
| | - Louise Bowles
- The Royal London Hospital Haemophilia Comprehensive Care Centre, The Royal London Hospital, Whitechapel, London, UK
| | - T Justin Clark
- Birmingham Women's NHS Foundation Trust, University of Birmingham, Birmingham, UK
| | - Gillian Lowe
- West Midlands Comprehensive Care Haemophilia Unit, University Hospitals Birmingham, Mindelsohn Way, Edgbaston, Birmingham, UK
| | - Jason Mainwaring
- Bournemouth and Poole Haemophilia Centre, Royal Bournemouth Hospital, Castle Lane East, Bournemouth, Dorset, UK
| | - Sarah Mangles
- Haemophilia, Haemostasis and Thrombosis Centre, Hampshire Hospitals NHS Foundation Trust, Basingstoke, UK
| | - Bethan Myers
- Leicester Haemostasis and Thrombosis Centre, University Hospitals of Leicester, Leicester, UK
| | - Rezan Abdul Kadir
- Department of Obstetrics and Gynaecology, Katharine Dormandy Haemophilia and Thrombosis Unit, The Royal Free NHS Foundation Hospital and Institute for Women's Health, University College London, London, UK
| |
Collapse
|
2
|
Heijdra JM, Cloesmeijer ME, Jager NC, Leebeek FW, Kruip MH, Cnossen MH, Mathôt RA. Quantification of the relationship between desmopressin concentration and Von Willebrand factor in Von Willebrand disease type 1: A pharmacodynamic study. Haemophilia 2022; 28:814-821. [DOI: 10.1111/hae.14582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 03/30/2022] [Accepted: 04/19/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Jessica M. Heijdra
- Department of Paediatric Haematology Erasmus MC Sophia Children's Hospital University Medical Centre Rotterdam The Netherlands
| | - Michael E. Cloesmeijer
- Department of Hospital Pharmacy – Clinical Pharmacology Amsterdam UMC University of Amsterdam Amsterdam The Netherlands
| | - Nico C.B. Jager
- Department of Hospital Pharmacy – Clinical Pharmacology Amsterdam UMC University of Amsterdam Amsterdam The Netherlands
| | - Frank W.G. Leebeek
- Department of Haematology Erasmus MC Erasmus University Medical Centre Rotterdam The Netherlands
| | - Marieke H.J.A. Kruip
- Department of Haematology Erasmus MC Erasmus University Medical Centre Rotterdam The Netherlands
| | - Marjon H. Cnossen
- Department of Paediatric Haematology Erasmus MC Sophia Children's Hospital University Medical Centre Rotterdam The Netherlands
| | - Ron A.A. Mathôt
- Department of Hospital Pharmacy – Clinical Pharmacology Amsterdam UMC University of Amsterdam Amsterdam The Netherlands
| | | |
Collapse
|
3
|
Sreeraman S, McKinlay S, Li A, Crowther M, Motalo O. Efficacy of parenteral formulations of desmopressin in the treatment of bleeding disorders: A systematic review. Thromb Res 2022; 213:16-26. [DOI: 10.1016/j.thromres.2022.02.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 02/07/2022] [Accepted: 02/21/2022] [Indexed: 01/10/2023]
|
4
|
How I treat. Bleeding Disorder of Unknown Cause (BDUC). Blood 2021; 138:1795-1804. [PMID: 34398949 DOI: 10.1182/blood.2020010038] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 08/10/2021] [Indexed: 11/20/2022] Open
Abstract
Recent studies have demonstrated that only 30% of patients referred for assessment of a possible bleeding tendency will eventually be diagnosed with a mild bleeding disorder (MBD) such as von Willebrand disease (VWD) or platelet function defect (PFD). Rather, the majority of such patients will be diagnosed with Bleeding Disorder of Unknown Cause (BDUC). There remains an important unmet need to define consensus regarding the clinical and laboratory criteria necessary for a formal BDUC diagnosis. Nevertheless, BDUC already accounts for more than 10% of patients registered in some Haemophilia Comprehensive Care centres. Accumulating recent data suggest that BDUC is also being diagnosed with increasing frequency. Increased BAT scores are widely utilized to differentiate significant from trivial symptoms in patients with mucocutaneous bleeding. Objective assessment of bleeding phenotype using a standardised bleeding assessment tool (BAT) therefore represents a fundamental first step in the diagnosis of BDUC. Since BDUC is a diagnosis by exclusion, accurate quantification of bleeding phenotype is critical as this will be the primary determinant upon which a diagnosis of BDUC is reached. Importantly, BAT scores suggest that patients with BDUC display bleeding phenotypes comparable to those seen in patients with VWD or PFD respectively. Despite the prevalence of BDUC, diagnosis and management of these patients commonly pose significant clinical dilemmas. In this manuscript, we consider these challenges in the context of a number of typical case studies, discuss the available evidence and outline our approach to the management of these patients.
Collapse
|
5
|
Ali T, Keenan J, Mason J, Hseih JT, Batstone M. Prospective study examining the use of thrombin-gelatin matrix (Floseal) to prevent post dental extraction haemorrhage in patients with inherited bleeding disorders. Int J Oral Maxillofac Surg 2021; 51:426-430. [PMID: 34400026 DOI: 10.1016/j.ijom.2021.07.018] [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] [Received: 03/29/2021] [Revised: 07/24/2021] [Accepted: 07/28/2021] [Indexed: 10/20/2022]
Abstract
The bleeding risk in individuals with inherited bleeding disorders (IBDs) during exodontia is traditionally managed with perioperative coagulation factors and/or desmopressin, in conjunction with systemic and topical perioperative tranexamic acid and meticulous primary closure. Factor replacement is costly, requires specialist input, and carries a risk of developing factor VIII (FVIII) inhibitors. This prospective study was performed to determine whether the use of a standardized Floseal and anti-fibrinolytic protocol could reduce postoperative bleeding in patients with IBDs undergoing dental extraction, as compared to factor replacement. All patients >18 years old attending Queensland Haemophilia Centre between November 2014 and July 2019 who required dental extractions were referred to the Oral and Maxillofacial Unit. Patients were consented for intraoperative Floseal administration instead of factor replacement. All other operative measures remained the same. The bleed rate was assessed against a historical control cohort. There were 34 extraction events in 32 patients. Four of the patients reported postoperative bleeding requiring factor supplementation or desmopressin; the bleeding rate was 11.8%. While not statistically significant, this was a reduction in the bleed rate compared to the traditional protocol (P = 0.35). Third molar extractions were 10.33 times more likely to cause postoperative bleeding (P = 0.018). The Floseal protocol was equipotent to the traditional perioperative factor replacement protocol. Floseal use is more economical, eliminates the risk of peri-procedural FVIII inhibitor development, and provides a haemostatic option for patients with very rare factor deficiencies, pre-existing clotting factor inhibitors, and those with anaphylaxis to clotting concentrates.
Collapse
Affiliation(s)
- T Ali
- Department of Maxillofacial Surgery, Royal Brisbane and Women's Hospital, Brisbane, Australia.
| | - J Keenan
- Department of Maxillofacial Surgery, Royal Brisbane and Women's Hospital, Brisbane, Australia
| | - J Mason
- Queensland Haemophilia Centre, Cancer Care Services, Royal Brisbane and Women's Hospital, Brisbane, Australia; University of Queensland, Brisbane, Australia
| | - J-T Hseih
- Department of Maxillofacial Surgery, Royal Brisbane and Women's Hospital, Brisbane, Australia
| | - M Batstone
- Department of Maxillofacial Surgery, Royal Brisbane and Women's Hospital, Brisbane, Australia; University of Queensland, Brisbane, Australia
| |
Collapse
|
6
|
Noye J, Rowell JA, Zeissink B, Connolly A, Mason JA. A fixed 'single vial' dose of subcutaneous desmopressin (DDAVP) produces adequate biologic responses for persons with mild haemophilia A. Haemophilia 2021; 27:e540-e542. [PMID: 33684234 DOI: 10.1111/hae.14287] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 01/29/2021] [Accepted: 02/15/2021] [Indexed: 11/30/2022]
Affiliation(s)
- Joseph Noye
- Queensland Haemophilia Centre, Department of Haematology and Cancer Care, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia.,School of Clinical Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - John A Rowell
- Queensland Haemophilia Centre, Department of Haematology and Cancer Care, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
| | - Beryl Zeissink
- Queensland Haemophilia Centre, Department of Haematology and Cancer Care, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
| | - Alex Connolly
- Queensland Haemophilia Centre, Department of Haematology and Cancer Care, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
| | - Jane A Mason
- Queensland Haemophilia Centre, Department of Haematology and Cancer Care, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia.,School of Clinical Medicine, University of Queensland, Brisbane, Queensland, Australia.,Australian Haemophilia Centre Directors Organisation (AHCDO), Melbourne, Victoria, Australia
| |
Collapse
|
7
|
Schütte LM, van Hest RM, Cnossen MH, Stoof SCM, Leebeek FWG, Mathôt RAA, Kruip MJHA. The association between desmopressin exposure, FVIII response and side effects. Haemophilia 2020; 27:e506-e509. [PMID: 33314458 DOI: 10.1111/hae.14227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 11/13/2020] [Accepted: 11/24/2020] [Indexed: 11/30/2022]
Affiliation(s)
- Lisette M Schütte
- Department of Haematology, Erasmus MC, University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Reinier M van Hest
- Hospital Pharmacy - Clinical Pharmacology, Amsterdam UMC, University of Amsterdam, Rotterdam, The Netherlands
| | - Marjon H Cnossen
- Department of Paediatric Haematology, Erasmus MC, University Medical Centre - Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Sara C M Stoof
- Department of Haematology, Erasmus MC, University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Frank W G Leebeek
- Department of Haematology, Erasmus MC, University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Ron A A Mathôt
- Hospital Pharmacy - Clinical Pharmacology, Amsterdam UMC, University of Amsterdam, Rotterdam, The Netherlands
| | - Marieke J H A Kruip
- Department of Haematology, Erasmus MC, University Medical Centre Rotterdam, Rotterdam, The Netherlands
| |
Collapse
|
8
|
de Jager NCB, Heijdra JM, Kieboom Q, Kruip MJHA, Leebeek FWG, Cnossen MH, Mathôt RAA. Population Pharmacokinetic Modeling of von Willebrand Factor Activity in von Willebrand Disease Patients after Desmopressin Administration. Thromb Haemost 2020; 120:1407-1416. [PMID: 32746466 DOI: 10.1055/s-0040-1714349] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
OBJECTIVE Most von Willebrand disease (VWD) patients can be treated with desmopressin during bleeding or surgery. Large interpatient variability is observed in von Willebrand factor (VWF) activity levels after desmopressin administration. The aim of this study was to develop a pharmacokinetic (PK) model to describe, quantify, and explain this variability. METHODS Patients with either VWD or low VWF, receiving an intravenous desmopressin test dose of 0.3 µg kg-1, were included. A PK model was derived on the basis of the individual time profiles of VWF activity. Since no VWF was administered, the VWF dose was arbitrarily set to unity. Interpatient variability in bioavailability (F), volume of distribution (V), and clearance (Cl) was estimated. RESULTS The PK model was developed using 951 VWF activity level measurements from 207 patients diagnosed with a VWD type. Median age was 28 years (range: 5-76), median predose VWF activity was 0.37 IU/mL (range: 0.06-1.13), and median VWF activity response at peak level was 0.64 IU/mL (range: 0.04-4.04). The observed PK profiles were best described using a one-compartment model with allometric scaling. While F increased with age, Cl was dependent on VWD type and sex. Inclusion resulted in a drop in interpatient variability in F and Cl of 81.7 to 60.5% and 92.8 to 76.5%, respectively. CONCLUSION A PK model was developed, describing VWF activity versus time profile after desmopressin administration in patients with VWD or low VWF. Interpatient variability in response was quantified and partially explained. This model is a starting point toward more accurate prediction of desmopressin dosing effects in VWD.
Collapse
Affiliation(s)
- Nico C B de Jager
- Hospital Pharmacy-Clinical Pharmacology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Jessica M Heijdra
- Department of Paediatric Haematology, Erasmus University Medical Centre - Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Quincy Kieboom
- Department of Paediatric Haematology, Erasmus University Medical Centre - Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Marieke J H A Kruip
- Department of Haematology, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Frank W G Leebeek
- Department of Haematology, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Marjon H Cnossen
- Department of Paediatric Haematology, Erasmus University Medical Centre - Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Ron A A Mathôt
- Hospital Pharmacy-Clinical Pharmacology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | | |
Collapse
|
9
|
O'Donnell JS, Lavin M. Perioperative management of patients with von Willebrand disease. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2019; 2019:604-609. [PMID: 31808837 PMCID: PMC6913501 DOI: 10.1182/hematology.2019000065] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Surgical procedures represent a serious hemostatic challenge for patients with von Willebrand disease (VWD), and careful perioperative management is required to minimize bleeding risk. Risk stratification includes not only the nature of the surgery to be performed but the baseline plasma von Willebrand factor (VWF) levels, bleeding history, and responses to previous challenges. Baseline bleeding scores (BSs) may assist in identification of patients with a higher risk of postsurgical bleeding. There remains a lack of consensus between best practice guidelines as to the therapeutic target and assays to be monitored in the postoperative period. Hemostatic levels are maintained until bleeding risk abates: usually 3 to 5 days for minor procedures and 7 to 14 days for major surgery. Hemostatic supplementation is more complex in VWD than in other bleeding disorders owing to the combined but variable deficiency of both plasma VWF and factor VIII (FVIII) levels. For emergency surgery, coadministration of VWF and FVIII is required to ensure hemostasis; however, for elective procedures, early infusion of VWF replacement therapy will stabilize endogenous FVIII. Because endogenous FVIII production is unaffected in patients with VWD, repeated VWF supplementation (particularly with plasma-derived FVIII-containing products) may lead to accumulation of FVIII. Frequent monitoring of plasma levels and access to hemostatic testing are, therefore, essential for patients undergoing major surgery, particularly with more severe forms of VWD.
Collapse
Affiliation(s)
- James S O'Donnell
- Irish Centre for Vascular Biology, Royal College of Surgeons in Ireland, Dublin, Ireland; and
- National Coagulation Centre, St. James' Hospital, Dublin, Ireland
| | - Michelle Lavin
- Irish Centre for Vascular Biology, Royal College of Surgeons in Ireland, Dublin, Ireland; and
- National Coagulation Centre, St. James' Hospital, Dublin, Ireland
| |
Collapse
|
10
|
Athavale A, Kulkarni H, Arslan CD, Hart P. Desmopressin and bleeding risk after percutaneous kidney biopsy. BMC Nephrol 2019; 20:413. [PMID: 31730448 PMCID: PMC6858772 DOI: 10.1186/s12882-019-1595-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 10/16/2019] [Indexed: 01/17/2023] Open
Abstract
Background Desmopressin is used to reduce bleeding after kidney biopsy but evidence supporting its use is weak, especially in patients with elevated creatinine. The present study was undertaken to evaluate efficacy of desmopressin in reducing bleeding after percutaneous kidney biopsy. Methods Retrospective cohort study. 269 of 322 patients undergoing percutaneous kidney biopsy between January 1, 2014 and January 31, 2018 were included. Patients had normal bleeding time, platelet count and coagulation profile. Primary outcome was defined as composite of hemoglobin drop ≥1 g/dL, hematoma on post biopsy ultrasound, gross hematuria, erythrocyte transfusion or angiography to stop bleeding. Association of desmopressin with outcomes was assessed using linear (for continuous variables) and logistic (for binary variables) regression models. Propensity score was used to minimize potential confounding. Results Desmopressin was administered to 100/269 (37.17%) patients. After propensity score adjustment patients who received desmopressin had increased odds of post biopsy bleeding [OR 3.88 (1.95–7.74), p < 0.001]. Creatinine at time of biopsy influenced bleeding risk; gender, emergent vs elective biopsy, obesity, AKI, diabetes, hypertension or bleeding time did not influence bleeding risk. Administration of desmopressin to patients with serum creatinine ≥1.8 mg/dL decreased bleeding risk [OR 2.11 (95% CI 0.87–5.11), p = 0.09] but increased bleeding risk when serum creatinine was < 1.8 mg/dL (OR 9.72 (95% CI 2.95–31.96), p < 0.001). Conclusion Desmopressin should not be used routinely prior to percutaneous kidney biopsy in patients at low risk for bleeding but should be reserved for patients who are at high risk for bleeding.
Collapse
Affiliation(s)
- Ambarish Athavale
- Division of Nephrology, Cook County Health, 1950 W. Polk Street, 5th Floor, Chicago, IL, 60605, USA.
| | | | - Cagil D Arslan
- Division of Nephrology, Cook County Health, 1950 W. Polk Street, 5th Floor, Chicago, IL, 60605, USA
| | - Peter Hart
- Division of Nephrology, Cook County Health, 1950 W. Polk Street, 5th Floor, Chicago, IL, 60605, USA
| |
Collapse
|
11
|
A decreased and less sustained desmopressin response in hemophilia A carriers contributes to bleeding. Blood Adv 2019; 2:2629-2636. [PMID: 30327371 DOI: 10.1182/bloodadvances.2018023713] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 09/12/2018] [Indexed: 11/20/2022] Open
Abstract
The cause of hemophilia A carrier bleeding is not well established. Desmopressin (DDAVP), used clinically to treat or prevent bleeding, can also be used as a medical stress surrogate. This study's objective was to compare the response to DDAVP in hemophilia A carriers with that in normal control patients. Bleeding was assessed by the International Society on Thrombosis and Hemostasis Bleeding Assessment Tool (ISTH-BAT). DDAVP (0.3 μg/kg) was administered either IV or subcutaneously (SC), and blood was drawn at baseline and 1, 2, and 4 hours postadministration. Blood was assessed for factor VIII (FVIII) level, von Willebrand factor (VWF) antigen (VWF:Ag), VWF activity (VWF:RCo or VWF:GPIbM), thromboelastography (TEG), and thrombin generation assay (TGA) at all points, and for VWF propeptide (VWFpp):Ag ratio and ABO blood type at baseline. Carriers were older than control patients (median age, 34 and 21 years, respectively; P = .003) and had higher ISTH-BAT bleeding scores (median bleeding score, 8 and 0, respectively; P = .001). Carriers had a significantly reduced FVIII response to DDAVP compared with control patients (P ≤ .0001). When only carriers with normal baseline FVIII levels (n = 10) were included, carriers maintained a reduced FVIII response (P ≤ .0001). Furthermore, participants with abnormal bleeding scores had a significantly lower FVIII response to DDAVP compared with those with normal bleeding scores (P = .036). Hemophilia A carriers have a lower and less sustained FVIII response to DDAVP, suggesting an impaired ability to respond to hemostatic stress, which contributes to bleeding.
Collapse
|
12
|
How I treat low von Willebrand factor levels. Blood 2019; 133:795-804. [DOI: 10.1182/blood-2018-10-844936] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 12/20/2018] [Indexed: 01/11/2023] Open
Abstract
Abstract
Partial quantitative deficiency of plasma von Willebrand factor (VWF) is responsible for the majority of cases of von Willebrand disease (VWD), the most common inherited human bleeding disorder. International consensus guidelines recommend that patients with reduced plasma VWF antigen (VWF:Ag) levels and bleeding phenotypes be considered in 2 distinct subsets. First, patients with marked reductions in plasma VWF levels (<30 IU/dL) usually have significant bleeding phenotypes and should be classified with “type 1 VWD.” In contrast, patients with intermediate reduced plasma VWF levels (in the range of 30-50 IU/dL) should be considered in a separate category labeled “low VWF levels.” These patients with low VWF commonly display variable bleeding phenotypes and often do not have VWF gene sequence variations. Because the pathophysiology underlying low VWF levels remains largely undefined, diagnosis and management of these patients continue to pose significant difficulties. In this article, we present a number of clinical case studies to highlight these common clinical challenges. In addition, we detail our approach to establishing a diagnosis in low VWF patients and discuss strategies for the management of these patients in the context of elective surgery and pregnancy.
Collapse
|
13
|
Franchini M, Marano G, Pupella S, Vaglio S, Veropalumbo E, Liumbruno GM. Management of mild hemophilia A. Expert Opin Orphan Drugs 2018. [DOI: 10.1080/21678707.2018.1529563] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Massimo Franchini
- Italian National Blood Centre, National Institute of Health, Rome, Italy
- Department of Hematology and Transfusion Medicine, Carlo Poma Hospital, Mantua, Italy
| | - Giuseppe Marano
- Italian National Blood Centre, National Institute of Health, Rome, Italy
| | - Simonetta Pupella
- Italian National Blood Centre, National Institute of Health, Rome, Italy
| | - Stefania Vaglio
- Italian National Blood Centre, National Institute of Health, Rome, Italy
| | - Eva Veropalumbo
- Italian National Blood Centre, National Institute of Health, Rome, Italy
| | | |
Collapse
|
14
|
Okoye HC, Nielsen BI, Lee K, Abajas YL, Key NS, Rollins-Raval MA. DDAVP trial in discrepant non-severe haemophilia A patients. Haemophilia 2018; 24:e152-e154. [PMID: 29732646 DOI: 10.1111/hae.13485] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/15/2018] [Indexed: 11/27/2022]
Affiliation(s)
- H C Okoye
- Haematology and Immunology, University of Nigeria, Enugu, Nigeria
| | - B I Nielsen
- Harold R Roberts Haemophilia and Thrombosis Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - K Lee
- Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Y L Abajas
- Department of Pediatrics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - N S Key
- Harold R Roberts Haemophilia and Thrombosis Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.,Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - M A Rollins-Raval
- Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| |
Collapse
|
15
|
Koscielny J, Tauer JT, Huhn B, Gneuss A, Kuhlisch E, Hofmann A, Petros S, Aumann V, Franke D, Kentouche K, Syrbe G, Seeger K, Haberland H, Klamroth R, Knöfler R. Desmopressin testing in haemo-philia A patients and carriers. Hamostaseologie 2017; 32:271-5. [DOI: 10.5482/hamo-12-06-0012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Accepted: 08/21/2012] [Indexed: 11/05/2022] Open
Abstract
SummaryIntroduction: Desmopressin (DDAVP) testing (DT) in patients (pts) with haemophilia A (HA) and carriers (CHA) is up to now not standardized. This prompted us to evaluate results of DT carried out between 1996 and 2011 in centres of the Competence Network Haemor-rhagic Diatheses East. Patients and method: An increase of the factor VIII activity (FVIII) above 50% or at least the two fold of initial values within 120 min after DDAVP was defined as complete response (CR). Data from 80 patients (31 children, 49 adults) of whom 64 suffered from HA (sub-HA: n = 48; mild: n = 14; moderate: n = 2) and 16 patients CHA were evaluated. Results: In 34 patients DDAVP was given i. v. (dose range: 0.26–0.6 μg/kg body weight, mean: 0.33), in 31 intranasally (i.n. 300–600 μg) and in 15 s. c. (15–40 μg). The maximal FVIII increase was reached 60 min after DDAVP. For i. v. application the mean FVIII increase was 3.1-fold, for i. n. 2.1-fold and for s. c. 2.4-fold. A CR was de tected in 71 patients, a non-response in 9. Mild side effects such as flush, headaches or nausea were observed in 11 patients (14%). Conclusion: For desmopressin testing in patients with haemophilia A and carriers i. v. application at 0.3 μg/kg body weight and the determination of FVIII before and 60 min after desmopressin infusion is recommended.
Collapse
|
16
|
Bhat R, Cabey W. Evaluation and Management of Congenital Bleeding Disorders. Hematol Oncol Clin North Am 2017; 31:1105-1122. [DOI: 10.1016/j.hoc.2017.08.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
17
|
Korkmaz U, Demir E, Yazici H, Sever MS. Hypertensive pulmonary edema related to desmopressin acetate. Nefrologia 2017. [DOI: 10.1016/j.nefro.2016.11.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
|
18
|
Desborough M, Hadjinicolaou AV, Chaimani A, Trivella M, Vyas P, Doree C, Hopewell S, Stanworth SJ, Estcourt LJ. Alternative agents to prophylactic platelet transfusion for preventing bleeding in people with thrombocytopenia due to chronic bone marrow failure: a meta-analysis and systematic review. Cochrane Database Syst Rev 2016; 10:CD012055. [PMID: 27797129 PMCID: PMC5321521 DOI: 10.1002/14651858.cd012055.pub2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND People with thrombocytopenia due to bone marrow failure are vulnerable to bleeding. Platelet transfusions have limited efficacy in this setting and alternative agents that could replace, or reduce platelet transfusion, and are effective at reducing bleeding are needed. OBJECTIVES To compare the relative efficacy of different interventions for patients with thrombocytopenia due to chronic bone marrow failure and to derive a hierarchy of potential alternative treatments to platelet transfusions. SEARCH METHODS We searched for randomised controlled trials (RCTs) in the Cochrane Central Register of Controlled Trials (the Cochrane Library 2016, Issue 3), MEDLINE (from 1946), Embase (from 1974), CINAHL (from 1937), the Transfusion Evidence Library (from 1980) and ongoing trial databases to 27 April 2016. SELECTION CRITERIA We included randomised controlled trials in people with thrombocytopenia due to chronic bone marrow failure who were allocated to either an alternative to platelet transfusion (artificial platelet substitutes, platelet-poor plasma, fibrinogen concentrate, recombinant activated factor VII (rFVIIa), desmopressin (DDAVP), recombinant factor XIII (rFXIII), recombinant interleukin (rIL)6 or rIL11, or thrombopoietin (TPO) mimetics) or a comparator (placebo, standard of care or platelet transfusion). We excluded people undergoing intensive chemotherapy or stem cell transfusion. DATA COLLECTION AND ANALYSIS Two review authors independently screened search results, extracted data and assessed trial quality. We estimated summary risk ratios (RR) for dichotomous outcomes. We planned to use summary mean differences (MD) for continuous outcomes. All summary measures are presented with 95% confidence intervals (CI).We could not perform a network meta-analysis because the included studies had important differences in the baseline severity of disease for the participants and in the number of participants undergoing chemotherapy. This raised important concerns about the plausibility of the transitivity assumption in the final dataset and we could not evaluate transitivity statistically because of the small number of trials per comparison. Therefore, we could only perform direct pairwise meta-analyses of included interventions.We employed a random-effects model for all analyses. We assessed statistical heterogeneity using the I2 statistic and its 95% CI. The risk of bias of each study included was assessed using the Cochrane 'Risk of bias' tool. The quality of the evidence was assessed using GRADE methods. MAIN RESULTS We identified seven completed trials (472 participants), and four ongoing trials (recruiting 837 participants) which are due to be completed by December 2020. Of the seven completed trials, five trials (456 participants) compared a TPO mimetic versus placebo (four romiplostim trials, and one eltrombopag trial), one trial (eight participants) compared DDAVP with placebo and one trial (eight participants) compared tranexamic acid with placebo. In the DDAVP trial, the only outcome reported was the bleeding time. In the tranexamic acid trial there were methodological flaws and bleeding definitions were subject to significant bias. Consequently, these trials could not be incorporated into the quantitative synthesis. No randomised trial of artificial platelet substitutes, platelet-poor plasma, fibrinogen concentrate, rFVIIa, rFXIII, rIL6 or rIL11 was identified.We assessed all five trials of TPO mimetics included in this review to be at high risk of bias because the trials were funded by the manufacturers of the TPO mimetics and the authors had financial stakes in the sponsoring companies.The GRADE quality of the evidence was very low to moderate across the different outcomes.There was insufficient evidence to detect a difference in the number of participants with at least one bleeding episode between TPO mimetics and placebo (RR 0.86, 95% CI 0.56 to 1.31, four trials, 206 participants, low-quality evidence).There was insufficient evidence to detect a difference in the risk of a life-threatening bleed between those treated with a TPO mimetic and placebo (RR 0.31, 95% CI 0.04 to 2.26, one trial, 39 participants, low-quality evidence).There was insufficient evidence to detect a difference in the risk of all-cause mortality between those treated with a TPO mimetic and placebo (RR 0.74, 95%CI 0.52 to 1.05, five trials, 456 participants, very low-quality evidence).There was a significant reduction in the number of participants receiving any platelet transfusion between those treated with TPO mimetics and placebo (RR 0.76, 95% CI 0.61 to 0.95, four trials, 206 participants, moderate-quality evidence).There was no evidence for a difference in the incidence of transfusion reactions between those treated with TPO mimetics and placebo (pOR 0.06, 95% CI 0.00 to 3.44, one trial, 98 participants, very low-quality evidence).There was no evidence for a difference in thromboembolic events between TPO mimetics and placebo (RR 1.41, 95%CI 0.39 to 5.01, five trials, 456 participants, very-low quality evidence).There was no evidence for a difference in drug reactions between TPO mimetics and placebo (RR 1.12, 95% CI 0.83 to 1.51, five trials, 455 participants, low-quality evidence).No trial reported the number of days of bleeding per participant, platelet transfusion episodes, mean red cell transfusions per participant, red cell transfusion episodes, transfusion-transmitted infections, formation of antiplatelet antibodies or platelet refractoriness.In order to demonstrate a reduction in bleeding events from 26 in 100 to 16 in 100 participants, a study would need to recruit 514 participants (80% power, 5% significance). AUTHORS' CONCLUSIONS There is insufficient evidence at present for thrombopoietin (TPO) mimetics for the prevention of bleeding for people with thrombocytopenia due to chronic bone marrow failure. There is no randomised controlled trial evidence for artificial platelet substitutes, platelet-poor plasma, fibrinogen concentrate, rFVIIa, rFXIII or rIL6 or rIL11, antifibrinolytics or DDAVP in this setting.
Collapse
|
19
|
Aparna M. A medical elaboration on von Willebrand disease with its dental management. JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY MEDICINE AND PATHOLOGY 2016. [DOI: 10.1016/j.ajoms.2016.06.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
20
|
Desborough M, Estcourt LJ, Chaimani A, Doree C, Hopewell S, Trivella M, Hadjinicolaou AV, Vyas P, Stanworth SJ. Alternative agents versus prophylactic platelet transfusion for preventing bleeding in patients with thrombocytopenia due to chronic bone marrow failure: a network meta-analysis and systematic review. Cochrane Database Syst Rev 2016; 2016:CD012055. [PMID: 27069420 PMCID: PMC4826602 DOI: 10.1002/14651858.cd012055] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
This is the protocol for a review and there is no abstract. The objectives are as follows: To compare the relative efficacy of different treatments for thrombocytopenia (artificial platelet substitutes, platelet-poor plasma, fibrinogen, rFVIIa, rFXIII, thrombopoietin mimetics, antifibrinolytic drugs or platelet transfusions) in patients with chronic bone marrow failure and to derive a hierarchy of potential alternate treatments to platelet transfusions.
Collapse
Affiliation(s)
| | - Lise J Estcourt
- Haematology/Transfusion Medicine, NHS Blood and Transplant, Oxford, UK
| | - Anna Chaimani
- Department of Hygiene and Epidemiology, University of Ioannina School of Medicine, Ioannina, Greece
| | - Carolyn Doree
- Systematic Review Initiative, NHS Blood and Transplant, Oxford, UK
| | - Sally Hopewell
- Oxford Clinical Trials Research Unit, University of Oxford, Oxford, UK
| | | | - Andreas V Hadjinicolaou
- Human Immunology Unit, Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Paresh Vyas
- MRC Molecular Haematology Unit and Department of Haematology, University of Oxford and Oxford University Hospitals NHS Trust, Oxford, UK
| | - Simon J Stanworth
- National Institute for Health Research (NIHR) Oxford Biomedical Research Centre, Oxford University Hospitals NHS Foundation Trust and the University of Oxford, Oxford, UK
| |
Collapse
|
21
|
Desmopressin responsiveness at a capped dose of 15 μg in type 1 von Willebrand disease and mild hemophilia A. Blood Coagul Fibrinolysis 2015; 25:820-3. [PMID: 24911459 DOI: 10.1097/mbc.0000000000000158] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Desmopressin (DDAVP) is commonly used in the treatment of patients with type 1 von Willebrand disease (VWD) and mild hemophilia A. A patient's responsiveness to DDAVP based on a 0.3 μg/kg dose determines future therapeutic efficacy of the drug. The aim of the study was to determine whether a capped dose of 15 μg subcutaneous DDAVP is able to achieve the same level of DDAVP responsiveness as previously reported. This is a retrospective chart review of patients from 1995 to 2013 in adults and children with type 1 VWD and hemophilia A weighing more than 50 kg. Levels of factor VIII, ristocetin cofactor, and von Willebrand factor antigen were measured before and after 1 h of administration of 15 μg of DDAVP. In patients with type 1 VWD, the complete response rate was 82.5% with a partial response rate of 12.5% and 5% nonresponders. In patients with mild hemophilia A, the complete response rate was 53.8% with a partial response rate of 38.5% and 7.7% nonresponders. These results using a capped 15-μg dose of DDAVP are similar to previously published reports using the 0.3-μg/kg dose.
Collapse
|
22
|
|
23
|
Leissinger C, Carcao M, Gill JC, Journeycake J, Singleton T, Valentino L. Desmopressin (DDAVP) in the management of patients with congenital bleeding disorders. Haemophilia 2013; 20:158-67. [DOI: 10.1111/hae.12254] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/15/2013] [Indexed: 11/29/2022]
Affiliation(s)
- C. Leissinger
- Section of Hematology and Medical Oncology; Tulane University; New Orleans LA USA
| | - M. Carcao
- Division of Haematology/Oncology; The Hospital for Sick Children; University of Toronto; Toronto ON Canada
| | - J. C. Gill
- Pediatric Hematology, Medicine and Epidemiology; The Medical College of Wisconsin and the Blood Center of Wisconsin; Milwaukee WI USA
| | - J. Journeycake
- Pediatrics; University of Texas Southwestern Medical Center; USA
- Bleeding Disorders and Thrombosis Program; Children's Medical Center; Dallas TX USA
| | - T. Singleton
- Section of Pediatric Hematology/Oncology; Tulane University; New Orleans LA USA
| | - L. Valentino
- Section of Pediatric Hematology/Oncology; Rush Hemophilia & Thrombophilia Center; Rush University Medical Center; Chicago IL USA
| |
Collapse
|
24
|
Akin M. Response to low-dose desmopressin by a subcutaneous route in children with type 1 von Willebrand disease. Hematology 2013; 18:115-8. [PMID: 23321055 DOI: 10.1179/1607845412y.0000000051] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
OBJECTIVE The primary objective of this study was to determine responses to low-dose desmopressin (DDAVP) by a subcutaneous route in children with type 1 VWD. METHODS This study analyzed responses to low doses of DDAVP administered by a subcutaneous route to 14 children between the ages of 3 and 16 with type 1 VWD and a personal and familial history of bleeding. At 0 (baseline) and 1 hour (initial response) after the subcutaneous injection of DDAVP, the vital signs were assessed and blood samples were obtained for VWD panel determinations (VWF:Ag, VWF:RCo, FVIII:C levels, and Col/Epi, Col/ADP). At 4 hours (sustained response), only Col/Epi and Col/ADP were assessed. RESULTS The DDAVP mean (min-max range, μg/kg) based on the patient's weight was 0.15 (0.12-0.18). Laboratory values mean (min-max range in U/dl) baseline for VWF:RCo, VWF:Ag, and FVIII:C were 28 (20-36), 34 (25-42), and 40 (29-48), respectively. After a subcutaneous administration, the laboratory values mean (min-max range in U/dl(-1)) achieved for 1 hour for VWF:RCo, VWF:Ag, and FVIII:C were 109 (72-144), 132 (88-166), and 151 (96-198), respectively. PFA 100(®) CT (Col/Epi <134 seconds and Col/ADP <110 seconds) returned to normal values at 1 and 4 hours after a subcutaneous administration. CONCLUSION Subcutaneous low-dose DDAVP therapy is at least effective as 0.3 µg/kg intravenous therapy for children with type 1 VWD. This study shows that a wider use of DDAVP should be promoted, especially in developing countries.
Collapse
Affiliation(s)
- Mehmet Akin
- Department of Pediatric Hematology, Denizli State Hospital, Denizli, Turkey
| |
Collapse
|
25
|
Lusher JM. Pharmacology and Pharmacokinetics of Desmopressin in Haemostatic Disorders. ACTA ACUST UNITED AC 2012. [DOI: 10.1007/bf03258240] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
26
|
|
27
|
MAUSER-BUNSCHOTEN EP, DEN UIJL IEM, SCHUTGENS REG, ROOSENDAAL G, FISCHER K. Risk of inhibitor development in mild haemophilia A increases with age. Haemophilia 2011; 18:263-7. [DOI: 10.1111/j.1365-2516.2011.02629.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
28
|
Peerlinck K, Jacquemin M. Mild haemophilia: a disease with many faces and many unexpected pitfalls. Haemophilia 2011; 16 Suppl 5:100-6. [PMID: 20590864 DOI: 10.1111/j.1365-2516.2010.02306.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
SUMMARY Despite major advances in diagnosis and treatment, the management of patients with mild haemophilia (MH) remains a major challenge. Mild haemophilia is defined by factor levels between 0.05 and 0.40 IU mL(-1). The bleeding associated with mild haemophilia is most frequently episodic, occurring during surgery or following trauma. Spontaneous bleeding is rare. Diagnosis is sometimes delayed because of insensitivity of screening clotting assays or discrepancies in factor VIII activity as measured by different assays. The treatment of choice in mild haemophilia A is desmopressin, which typically induces a 2-6-fold increase of factor VIII over baseline. However, desmopressin has its limitations in this setting such as the occurrence of tachyphylaxis and failure to respond in an undetermined proportion of patients. Factors underlying poor biological response or magnitude of response to desmopressin are incompletely understood. Inhibitor development in mild haemophilia is particularly distressing. This complication arises at an older age in this patient group because of infrequent need for factor VIII replacement. Inhibitors in mild haemophilia patients often cross-react with endogenous factor VIII resulting in severe spontaneous bleeding frequently in a postoperative setting. Intensive perioperative use of factor VIII and some specific mutations induce a particularly high risk for inhibitor development, but risk factors are incompletely understood. For reasons of the older age of the patients, treatment of bleeding with bypassing agents may cause major thrombotic complications. Data on therapeutic options for inhibitor eradication in patients with mild haemophilia are particularly scarce. With increased life-expectancy for all haemophilia patients, the group of elderly patients with mild haemophilia requiring major surgery will further increase. Prevention of inhibitors, particularly in this patient group, should be a major topic of interest in both clinic and research.
Collapse
Affiliation(s)
- K Peerlinck
- Hemophilia Center, Universitaire Ziekenhuizen Leuven and Center for Molecular and Vascular Biology, Katholieke Universiteit Leuven, Leuven, Belgium.
| | | |
Collapse
|
29
|
Szlam F, Sreeram G, Solomon C, Levy JH, Molinaro RJ, Tanaka KA. Elevated factor VIII enhances thrombin generation in the presence of factor VIII-deficiency, factor XI-deficiency or fondaparinux. Thromb Res 2010; 127:135-40. [PMID: 21144556 DOI: 10.1016/j.thromres.2010.10.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2010] [Revised: 09/02/2010] [Accepted: 10/19/2010] [Indexed: 10/18/2022]
Abstract
BACKGROUND Increased levels of factor VIII occur as a response to vascular injury and/or inflammation, and may increase thrombotic risks. In contrast, factor VIII deficiency poses a major hemostatic challenge. The role of factor VIII in modulating hemostasis/thrombosis was investigated in plasma models of hypocoagulable and hypercoagulable state using thrombin generation (TG) assay. METHODS TG was performed in undiluted/diluted control, FVIII-deficient, FVIII-deficient with low antithrombin (AT activity, ~59%), and factor XI-deficient plasma samples using relipidated tissue factor (TF, 2 pM) or dilute Actin as activators. The impact of elevated FVIII on TG was simulated by adding Humate-P (0 to 3 U/ml) to the above plasma samples. In fondaparinux (1 μg/ml) treated plasma with normal or lower AT activity effects of Humate-P vs. 60 nM of recombinant activated factor VII (rFVIIa) were also evaluated. RESULTS Humate-P increased TG concentration dependently in undiluted and diluted control plasma with TF activation. With Actin activation, only the concentration dependent shortening of lag time, but no change in peak thrombin was observed. In FVIII-deficient, FVIII-deficient with low AT, and FXI-deficient samples, 3 U/ml of Humate-P increased TG, and decreased its onset with either activator. The reduced peak thrombin due to fondaparinux was reversed with Humate-P (3 U/ml) more than with rFVIIa. Elevated FVIII levels seem to favor intrinsic tenase formation and antagonize fondaparinux because anti-FIXa aptamer added to fondaparinux effectively attenuated TG. CONCLUSION Elevated FVIII supports the propagation of TG via intrinsic tenase formation under low TF condition, factor XI deficiency or in the presence of fondaparinux.
Collapse
Affiliation(s)
- Fania Szlam
- Department of Anesthesiology, Emory University School of Medicine, Atlanta, Georgia 30322, USA
| | | | | | | | | | | |
Collapse
|
30
|
|
31
|
Hanke AA, Dellweg C, Kienbaum P, Weber CF, Görlinger K, Rahe-Meyer N. Effects of desmopressin on platelet function under conditions of hypothermia and acidosis: an in vitro study using multiple electrode aggregometry*. Anaesthesia 2010; 65:688-91. [PMID: 20477783 DOI: 10.1111/j.1365-2044.2010.06367.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
SUMMARY Hypothermia and acidosis lead to an impairment of coagulation. It has been demonstrated that desmopressin improves platelet function under hypothermia. We tested platelet function ex vivo during hypothermia and acidosis. Blood samples were taken from 12 healthy subjects and assigned as follows: normal pH, pH 7.2, and pH 7.0, each with and without incubation with desmopressin. Platelet aggregation was assessed by multiple electrode aggregometry. Baseline was normal pH and 36 degrees C. The other samples were incubated for 30 min and measured at 32 degrees C. Acidosis significantly impaired aggregation. Desmopressin significantly increased aggregability during hypothermia and acidosis regardless of pH, but did not return it to normal values at low pH. During acidosis and hypothermia, acidosis should be corrected first; desmopressin can then be administered to improve platelet function as a bridge until normothermia can be achieved.
Collapse
Affiliation(s)
- A A Hanke
- Department of Anaesthesiology and Intensive Care Medicine, Hannover Medical School, Hannover, Germany.
| | | | | | | | | | | |
Collapse
|
32
|
Abstract
Mild hemophilia A (HA), defined by clinical features and factor VIII coagulant activity (FVIII:C) between 0.05 and 0.40 IU mL(-1), is characteristically distinct from severe HA. Indeed, although the molecular characterization of mild HA has permitted the identification of specific underlying mutations, its clinical phenotype is strikingly different from that of patients with a severe FVIII defect, where spontaneous hemorrhages or recurrent joint bleeding are usual manifestations. With aging, mild HA patients may develop complications (i.e. cancers and cardiovascular disorders), the management of which may prove challenging due to the concomitant bleeding tendency. Furthermore, the development of inhibitors provides an additional major complication in these patients, because it increases the severity of the bleeding phenotype and complicates their management. Standard management of mild HA includes the use of desmopressin and antifibrinolytic agents for minor bleeding episodes or surgical procedures, whilst major bleeding or surgery requires replacement therapy with FVIII concentrates. As regards treatment of patients with inhibitors, bypassing agents (i.e. activated prothrombin complex concentrates and recombinant activated FVII) have proven effective in the treatment of bleeding episodes, but as there are insufficient data to determine the optimal approach to immune tolerance induction in this group of patients, their optimal management remains controversial. Rituximab is a newer, promising therapeutic option for inhibitor eradication in such patients. Many aspects concerning mild HA remain to be clarified, including the molecular basis, the natural history and the optimal diagnostic and therapeutic strategies. Only large prospective studies will shed light on this condition.
Collapse
Affiliation(s)
- M Franchini
- Servizio di Immunoematologia e Medicina Trasfusionale, Dipartimento di Patologia e Medicina di Laboratorio, Azienda Ospedaliero-Universitaria di Parma, Parma, Italy.
| | | | | |
Collapse
|
33
|
Castaman G, Mancuso ME, Giacomelli SH, Tosetto A, Santagostino E, Mannucci PM, Rodeghiero F. Molecular and phenotypic determinants of the response to desmopressin in adult patients with mild hemophilia A. J Thromb Haemost 2009; 7:1824-31. [PMID: 19719828 DOI: 10.1111/j.1538-7836.2009.03595.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND The relationship of the biologic response to desmopressin with the F8 mutation and physiological characteristics has been poorly investigated in patients with mild hemophilia A. OBJECTIVES We prospectively assessed the molecular and phenotypic determinants of the biologic response to desmopressin in a cohort of 50 patients with mild hemophilia A. METHODS Up to 24 h after desmopressin, blood samples were serially obtained and factor (F)VIII and von Willebrand factor (VWF) measured. The promoter region, all exons and exon-intron boundaries of the F8 gene were screened using denaturing high-performance liquid chromatography (DHPLC). Direct sequencing was done when DHPLC screening was normal. Genomic DNA was also sequenced for exons 18-21, 24 and 27 of VWF. RESULTS Mean basal FVIII:C was 19 +/- 9 IU dL(-1) (range 6-37) and the median postdesmopressin peak increase was 2.5-fold (range 1.1-7.1). Eleven patients with a cross-reacting material positive (CRM(+)) phenotype had similar basal levels and relative increases of FVIII:C to the remaining patients with low FVIII:Ag. Using multivariate regression, FVIII:C half-life was positively related to basal and peak VWF:Ag levels (P = 0.008) and patient age (P = 0.004). Eleven patients had evidence of reduced FVIII survival. While 27 different gene mutations were identified in 41 patients, nine patients had no detectable mutation. These patients had significantly smaller peaks and smaller relative increase of postdesmopressin FVIII:C (median FVIII:C 26 IU dL(-1) vs. 54 IU dL(-1); P < 0.001; fold 1.8 +/- 0.6 vs. 2.9 +/- 0.8; P = 0.002). CONCLUSIONS In this cohort of patients with mild hemophilia A, a poor biologic response to desmopressin was frequently associated with the absence of detectable F8 mutations.
Collapse
Affiliation(s)
- G Castaman
- Department of Cell Therapy and Hematology, Hemophilia and Thrombosis Center, San Bortolo Hospital, Vicenza, Italy.
| | | | | | | | | | | | | |
Collapse
|
34
|
Abstract
The synthetic vasopressin analogue (1-deamino-8-D-arginine-vasopressin) increases plasma concentration of factor VIII and von Willebrand factor in normal subjects and patients with mild haemophilia A and von Willebrand disease. Since its first clinical use in 1977, desmopressin has become the treatment of choice for patients with haemophilia A and factor VIII coagulant activity (FVIII:C) > 5% and has spared several patients the risk of acquiring blood-borne viral infections due to the use of non-virally inactivated plasma-derived FVIII concentrates. An average two to sixfolds FVIII:C increase is typically observed in most patients and return to baseline occurs usually within 8 hours. Several clinical studies have demonstrated the clinical efficacy and safety of desmopressin and the availability of concentrated formulation for subcutaneous injection and of a nasal spray has paved the way to home-treatment. However, overall it appears that haemophilic children may have a lower rate of biologic response compared to adults and a minority of adult patients are not able to attain clinically useful FVIII:C levels post-desmopressin administration. Thus, in every patient with haemophilia A likely to be treated or candidate to an elective invasive procedure, a test-infusion/injection should be carried out to assess the future usefulness of the compound.
Collapse
Affiliation(s)
- G Castaman
- Department of Hematology and Hemophilia, Thrombosis Center, San Bortolo Hospital, Vicenza, Italy.
| |
Collapse
|
35
|
Nichols WL, Hultin MB, James AH, Manco-Johnson MJ, Montgomery RR, Ortel TL, Rick ME, Sadler JE, Weinstein M, Yawn BP. von Willebrand disease (VWD): evidence-based diagnosis and management guidelines, the National Heart, Lung, and Blood Institute (NHLBI) Expert Panel report (USA). Haemophilia 2008; 14:171-232. [PMID: 18315614 DOI: 10.1111/j.1365-2516.2007.01643.x] [Citation(s) in RCA: 570] [Impact Index Per Article: 35.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- W L Nichols
- Special Coagulation Laboratory, Division of Hematopathology, Department of Laboratory Medicine and Pathology, College of Medicine, Mayo Clinic, Rochester, MN, USA.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Rose SS, Faiz A, Miller CH, Saidi P, Philipp CS. Laboratory response to intranasal desmopressin in women with menorrhagia and platelet dysfunction. Haemophilia 2008; 14:571-8. [PMID: 18312366 DOI: 10.1111/j.1365-2516.2008.01655.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Intranasal desmopressin (IN-DDAVP) is used for home treatment of menorrhagia in women with inherited bleeding disorders. The effect of IN-DDAVP on laboratory haemostatic parameters in women with menorrhagia related to platelet dysfunction is unknown. We evaluated the effects of IN-DDAVP on haemostatic parameters in women with menorrhagia and platelet dysfunction and correlated them with menstrual flow. Eleven women (aged 18-45) with menorrhagia and haemostatic abnormalities had determination of von Willebrand factor antigen (VWF:Ag), von Willebrand factor ristocetin cofactor (VWF:RCo) activity, factor VIII coagulant activity (FVIII:C), platelet aggregation and platelet adenosine tri-phosphate (ATP) release pre-IN-DDAVP and 60-min post-IN-DDAVP. Eight of eleven women underwent platelet function analyzer (PFA-100) closure time determination with collagen/adrenaline and collagen/adenosine diphosphate cartridges pretreatment and post-treatment. IN-DDAVP was administered during two consecutive menstrual cycles. Menstrual flow was assessed during each cycle using a pictorial blood assessment chart. Treatment with IN-DDAVP resulted in elevated VWF levels and shortened PFA-100 closure time with significant inverse correlation between shortening of PFA-100 closure times and increases in VWF levels. There were also significant inverse correlations between changes in menstrual flow and changes in VWF:Ag (P = 0.02), VWF:RCo (P = 0.04) and FVIII:C (P = 0.006), following treatment. In vitro platelet aggregation and platelet ATP release response did not correct and did not correlate with changes in menstrual flow. Our results demonstrate a correlation between haemostatic parameters and menstrual flow following IN-DDAVP in women with menorrhagia and platelet dysfunction.
Collapse
Affiliation(s)
- S S Rose
- Division of Hematology, Department of Medicine, UMDNJ-Robert Wood Johnson Medical School, New Brunswick, NJ 08903, USA.
| | | | | | | | | |
Collapse
|
37
|
Sharthkumar A, Greist A, Di Paola J, Winay J, Roberson C, Heiman M, Herbert S, Parameswaran R, Shapiro A. Biologic response to subcutaneous and intranasal therapy with desmopressin in a large Amish kindred with Type 2M von Willebrand disease. Haemophilia 2008; 14:539-48. [PMID: 18312368 DOI: 10.1111/j.1365-2516.2008.01666.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The aim of this study was to characterize the adequacy and longevity of biological response to desmopressin (DDAVP) in a large Amish kindred of Type 2M von Willebrand disease (VWD) possessing C-to-T transition at nucleotide 4120 in exon 28 of A1 domain of von Willebrand factor (VWF) gene. Response to both intranasal (Stimate) and subcutaneous DDAVP administration was assessed. Rise in ristocetin cofactor activity (VWF:RCo) > or = 40% at 90-min post-Stimate and 1-2 h after subcutaneous DDAVP was defined as initial response; response longevity was assessed only after subcutaneous dosing by measuring VWF:RCo levels at time-points 1, 2, 4 and 6 h. Eleven patients (five males, six females; age range: 20-56 years) participated in intranasal and 9/11 (four males, five females) in subcutaneous testing. Baseline haemostatic profiles included: VWF:RCo < 15%, VWF:Ag < 40% and normal VWF multimers. Initial response was comparable by both intranasal (6/11; 54.5%) and subcutaneous (4/9; 44%) routes; sustained response (VWF:RCo > 40% for 2 h) was observed in only one in nine (11%) patients tested. Median VWF:RCo peak levels after intranasal (40%) and subcutaneous (39%) routes were equivalent. Peak VWF:Ag levels were significantly higher after subcutaneous than intranasal DDAVP (94% vs. 54%; P = 0.03). Area under the curve for VWF:RCo was significantly decreased (170 microg h mL(-1)) compared with VWF:Ag (471 microg h mL(-1)) and FVIII:C (624.60 microg h mL(-1)). This study suggests that in this population: (i) intra-individual DDAVP response is consistent with subcutaneous and intranasal administration; and (ii) extending DDAVP challenge test up to at least 6 h is required to characterize adequacy and longevity of biologic response prior to using DDAVP as a sole haemostatic intervention.
Collapse
Affiliation(s)
- A Sharthkumar
- Indiana Hemophilia and Thrombosis Center, Indianapolis, IN 46260, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Ying CLA, Tsang SF, Ng KFJ. The potential use of desmopressin to correct hypothermia-induced impairment of primary haemostasis—An in vitro study using PFA-100®. Resuscitation 2008; 76:129-33. [PMID: 17714852 DOI: 10.1016/j.resuscitation.2007.07.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2007] [Revised: 06/30/2007] [Accepted: 07/05/2007] [Indexed: 01/09/2023]
Abstract
OBJECTIVE Mild hypothermia (32-35 degrees C) impairs primary haemostasis and coagulation. Correction of these haemostatic impairments by rewarming alone may not be possible or desirable, particularly in major trauma, neuroanaesthesia and in critically ill patients. Pharmacological treatment of these impairments, if available, may be a useful alternative. Desmopressin has been used to treat various congenital and acquired platelet disorders, but its effects on hypothermia-induced impairment of primary haemostasis is not known. This study aims to investigate the in vitro effects of desmopressin on hypothermia-induced impairment of primary haemostasis using PFA-100 platelet function analyzer. METHODS Whole blood was collected from 20 healthy volunteers, divided into 2.7 ml aliquots and some incubated at 32 degrees C, and others at 37 degrees C as control. Three log doses of desmopressin (0.01, 0.1 or 1 nM) were added to aliquots at 32 degrees C, and saline was added to controls at both 32 and 37 degrees C, all in 0.1 ml volume. After incubating for 30 min, closure times (CT) was measured by PFA-100 using both collagen/epinephrine (adrenaline) (Col/EPI) and collagen/adenosine-5'-diphosphate (Col/ADP) cartridges. RESULTS CT was prolonged by 30.9% (Col/EPI) and 18.8% (Col/ADP) at 32 degrees C, respectively, compared to 37 degrees C (P<0.001). All the three doses of desmopressin significantly, but incompletely corrected CT prolongation due to hypothermia (P<0.002). CONCLUSION Desmopressin partially reverses hypothermia-induced impairment of primary haemostasis in vitro, and may be potentially useful in improving haemostasis in hypothermic patients with bleeding where immediate rewarming is difficult or undesirable.
Collapse
Affiliation(s)
- Chee L A Ying
- Department of Anaesthesiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Room 424, Block K, Queen Mary Hospital, 102 Pokfulam Road, Hong Kong, China
| | | | | |
Collapse
|
39
|
RODEGHIERO F. Management of menorrhagia in women with inherited bleeding disorders: general principles and use of desmopressin. Haemophilia 2007; 14 Suppl 1:21-30. [DOI: 10.1111/j.1365-2516.2007.01611.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
40
|
Abstract
Desmopressin, a synthetic derivative of the antidiuretic hormone vasopressin, is the treatment of choice for most patients with von Willebrand disease and mild hemophilia A. Moreover, the compound has been shown to be useful in a variety of inherited and acquired hemorrhagic conditions, including some congenital platelet function defects, chronic liver disease, uremia, and hemostatic defects induced by the therapeutic use of antithrombotic drugs such as aspirin and ticlopidine. Finally, desmopressin has been used as a blood saving agent in patients undergoing operations characterized by large blood loss and transfusion requirements, but studies suggest that this is not as effective as other methods. This review briefly summarizes the current clinical indications on the use of desmopressin as a hemostatic agent.
Collapse
Affiliation(s)
- Massimo Franchini
- Servizio di Immunoematologia e Trasfusione, Centro Emofilia, Azienda Ospedaliera di Verona, Verona, Italy.
| |
Collapse
|
41
|
Lee CA, Chi C, Pavord SR, Bolton-Maggs PHB, Pollard D, Hinchcliffe-Wood A, Kadir RA. The obstetric and gynaecological management of women with inherited bleeding disorders - review with guidelines produced by a taskforce of UK Haemophilia Centre Doctors' Organization. Haemophilia 2006; 12:301-36. [PMID: 16834731 DOI: 10.1111/j.1365-2516.2006.01314.x] [Citation(s) in RCA: 148] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The gynaecological and obstetric management of women with inherited coagulation disorders requires close collaboration between obstetrician/gynaecologists and haematologists. Ideally these women should be managed in a joint disciplinary clinic where expertise and facilities are available to provide comprehensive assessment of the bleeding disorder and a combined plan of management. The haematologist should arrange and interpret laboratory tests and make provision for appropriate replacement therapy. These guidelines have been provided for healthcare professionals for information and guidance and it is also intended that they are readily available for women with bleeding disorders.
Collapse
Affiliation(s)
- C A Lee
- Katharine Dormandy Haemophilia Centre and Haemostasis Unit, Royal Free Hospital, London, UK.
| | | | | | | | | | | | | |
Collapse
|
42
|
Ruzicka H, Björkman S, Lethagen S, Sterner G. Pharmacokinetics and antidiuretic effect of high-dose desmopressin in patients with chronic renal failure. PHARMACOLOGY & TOXICOLOGY 2003; 92:137-42. [PMID: 12753429 DOI: 10.1034/j.1600-0773.2003.920306.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
High-dose desmopressin shortens the bleeding time in uraemia. The aim of this study was to investigate the pharmacokinetics and the antidiuretic effect of desmopressin when given in a dose normally used for haemostasis to patients with reduced renal function. Ten patients with chronic renal failure of varying aetiology were enrolled in the study. The age was 58 (20-76) years (median and range), serum creatinine 447 (309-691) micromol/l and plasma clearance of iohexol 16 (8-19) ml/min./1.73 m2 body surface. After baseline measurements, desmopressin was infused at a dose of 0.3 microg/kg. The plasma concentration of desmopressin was followed for 26 hr during and after the infusion and the pharmacokinetic parameters were estimated by compartmental analysis. Urine volume and osmolality, as well as body weight, blood pressure, heart rate, haematocrit, serum osmolality, electrolytes and creatinine, were measured repeatedly during the day before and for two days after the infusion. The total clearance of desmopressin was 0.35 (0.21-0.47) ml/min./kg, the volume of distribution at steady state was 0.30 (0.17-0.38) l/kg and the terminal half-life 9.7 (8.4-16) hr. After administration of desmopressin, urine osmolality increased significantly, by approximately 10%, and this increase lasted for 48 hr. Concomitantly, there was a modest but significant decrease in haematocrit. Thus, the clearance of desmopressin was on average decreased to approximately one quarter, and the terminal half-life was prolonged 2-3 times in the patients as compared to previously published values for healthy adults. The single haemostatic dose of desmopressin given to patients with severe renal failure did not cause fluid overload or changes in serum electrolytes.
Collapse
Affiliation(s)
- Hana Ruzicka
- Department of Nephrology and Transplantation, Malmö University Hospital, Malmö, Sweden.
| | | | | | | |
Collapse
|
43
|
Abstract
Hemophilia is an inherited bleeding disorder caused by quantitative or qualitative defects in the synthesis of factor VIII (FVIII) or factor IX (FIX). Clinically, it is divided into severe, moderate and mild disease depending on the levels of FVIII or FIX in the blood. The bleeding tendency is most pronounced and can start at a very young age in severe hemophilia, which is characterized by repeated hemorrhage into the joints and muscles. Without treatment, these episodes lead to severe arthropathy, and there is also a high risk of lethal cerebral hemorrhage. The treatment of bleeding symptoms requires the correction of the coagulation defect. Factor concentrates have been available for 30 years, initially with the development of cryoprecipitate, subsequently with increasingly purified plasma-derived forms, and ultimately with recombinant clotting factor concentrates. The advantage of this highly effective therapy has been subdued by the outbreak of HIV and Hepatitis C infections in patients with hemophilia treated with factor concentrates which did not have adequate viral inactivation steps in the purification process. Plasma-derived and recombinant factor concentrates are today considered to have a good safety profile, but are only available for a small group of hemophilia patients worldwide. A multidisciplinary team approach is important for early diagnosis, communication with the patient and parents, and to tailor the best treatment possible with the amount of clotting factor concentrates available. The main goal of hemophilia treatment is to prevent bleeding symptoms and allow normal integration in social life. In patients with severe hemophilia, this can best be achieved by early home treatment and primary prophylaxis. Future developments in gene therapy may transform severe hemophilia to a mild form, with no need for regular injections of clotting factor concentrates.
Collapse
Affiliation(s)
- Pia Petrini
- Coagulation Department, Karolinska Hospital, Stockholm, Sweden.
| |
Collapse
|
44
|
Villar A, Jimenez-Yuste V, Quintana M, Hernandez-Navarro F. The use of haemostatic drugs in haemophilia: desmopressin and antifibrinolytic agents. Haemophilia 2002; 8:189-93. [PMID: 12010409 DOI: 10.1046/j.1365-2516.2002.00645.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Over the last 4 decades, there have been very significant advances in the treatment of haemophilia. Plasma products first became available in the 1960s, beginning with cryoprecipitate and then intermediate-purity plasma concentrates, for the treatment of haemophilia A and B. The disasters of viral infections amongst people with haemophilia in the 1980s served to stimulate both the development of techniques of viral inactivation of concentrates and the manufacture of purer products. We therefore now have safe plasma products that are also pure in that they are concentrates of only the deficient protein responsible for the congenital coagulopathy. Preparations of specific coagulation proteins obtained using recombinant biotechnology techniques have been available since 1995. By contrast, pharmacological options for the treatment of the haemophilia remain very limited. The only therapeutic alternatives of real practical value which have been available in the last 30 years for the treatment of haemophilic patients are desmopressin, antifibrinolytic agents, aprotinin, concentrated oestrogens, and local haemostatic agents such as topical thrombin or fibrin glue. This article aims to assess the pharmacological basis and accumulated experience relating to these drugs when used for the prevention and treatment of bleeding in patients with haemorrhagic disorders.
Collapse
Affiliation(s)
- A Villar
- Hematology Department, Hospital Universitario La Paz, Madrid, Spain.
| | | | | | | |
Collapse
|
45
|
Wilde JT, Cook RJ. von Willebrand disease and its management in oral and maxillofacial surgery. Br J Oral Maxillofac Surg 1998; 36:112-8. [PMID: 9643596 DOI: 10.1016/s0266-4356(98)90178-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
von Willebrand disease (vWD) is the most common of the hereditary disorders of coagulation. We describe the pathophysiology, diagnosis and the new simplified classification of the disorder and discuss the management of patients about to undergo dental procedures and maxillofacial surgery. Close collaboration between oral and maxillofacial surgeons and haematologists in the management of patients with vWD is essential.
Collapse
Affiliation(s)
- J T Wilde
- Queen Elizabeth Hospital, Edgbaston, Birmingham, UK
| | | |
Collapse
|
46
|
Green D, Wong CA, Twardowski P. Efficacy of hemostatic agents in improving surgical hemostasis. Transfus Med Rev 1996; 10:171-82. [PMID: 8809968 DOI: 10.1016/s0887-7963(96)80058-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- D Green
- Department of Medicine, Northwestern University Medical School, Chicago, IL, USA
| | | | | |
Collapse
|
47
|
Berntorp E. The treatment of haemophilia, including prophylaxis, constant infusion and DDAVP. BAILLIERE'S CLINICAL HAEMATOLOGY 1996; 9:259-71. [PMID: 8800504 DOI: 10.1016/s0950-3536(96)80062-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Recent years have witnessed advances in the treatment of haemophilia such as the introduction of prophylaxis, continuous infusion and pharmacological treatment with desmopressin (DDAVP). Prophylactic treatment on a long-term basis appears to be effective in preventing the development of arthropathy in severe haemophilia. The largest body of experience is that from Sweden, where prophylaxis is started at the age of 1-2 years. The dosage used is 25-40 U factor VIII/IX per kilogram bodyweight given three times or twice weekly, respectively. In some cases an intravenous access device has to be used during the first years of treatment. The patients grow up like normal boys and can live virtually normal lives. The beneficial psychological impact of prophylaxis on the family cannot be overestimated. Side-effects are not more frequent with prophylaxis than with on-demand treatment. The feasibility of continuous infusion of factor VIII/IX concentrates during bleeding episodes, or as cover for surgery, has been documented. This mode of delivery increases convenience and the cost-benefit ratio of the treatment, with savings in postoperative replacement of factor concentrate of about 50-75%. Many modern concentrates are stable enough for the purpose, and several pump systems, including portable ones, are available. The haemostatic drug DDAVP can be effectively used in most cases of mild haemophilia A. Intravenous administration is to be preferred as cover for surgery or in the case of severe bleeds. There is an effective nasal spray which can also be used for home therapy in mild or moderate bleedings.
Collapse
Affiliation(s)
- E Berntorp
- Malmö Haemophilia Centre, Malmö University Hospital, University of Lund, Sweden
| |
Collapse
|
48
|
Abstract
Desmopressin is a widely used hemostatic drug. It is a synthetic analogue of the natural hormone vasopressin, but, in contrast to vasopressin, it has no pressor activity. The effect is immediate, with two- to sixfold increases in the plasma concentrations of coagulation factor VIII, on Willebrand factor, and tissue plasminogen activator, and increases in platelet adhesiveness of comparable magnitude. Desmopressin is used in patients with mild hemophilia A, von Willebrand's disease, congenital platelet dysfunction, or acquired platelet dysfunction due to uremia or intake of such drugs as aspirin. It may also be used to reduce surgical blood loss in patients without known bleeding diathesis. Optimal hemostatic effect is achieved with a dosage of 0.3 micrograms/kg given intravenously. Other routes of administration are subcutaneous injection or intranasal spray. The latter proved to be efficient for home treatment of patients with bleeding disorders.
Collapse
Affiliation(s)
- S Lethagen
- Department for Coagulation Disorders, University of Lund, Malmö General Hospital, Sweden
| |
Collapse
|
49
|
Karnezis TA, Stulberg SD, Wixson RL, Reilly P. The hemostatic effects of desmopressin on patients who had total joint arthroplasty. A double-blind randomized trial. J Bone Joint Surg Am 1994; 76:1545-50. [PMID: 7929503 DOI: 10.2106/00004623-199410000-00015] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The effects of desmopressin on postoperative bleeding and postoperative transfusion requirements were studied in ninety-two hemostatically normal patients who had had an elective primary total hip or total knee arthroplasty. The patients were randomized into either a placebo or a desmopressin group in a double-blind prospective clinical trial. During closure of the wound, desmopressin (0.03 microgram per kilogram of body mass) or the placebo was infused into a peripheral vein over a twenty-minute period. Compared with the placebo, desmopressin did not significantly decrease blood loss or transfusion requirements, and it did not affect the postoperative platelet or fibrinogen levels or the bleeding time. The results were no different even when the treatment and control groups were matched according to surgeon, use of cement for the femoral and knee components, preoperative use of non-steroidal anti-inflammatory agents, or performance of a lateral release for total knee arthroplasty. We concluded that desmopressin does not reduce blood loss or transfusion requirements after total joint arthroplasty.
Collapse
Affiliation(s)
- T A Karnezis
- Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois 60611-3008
| | | | | | | |
Collapse
|
50
|
|