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Kelly C, Thomas W, Baker RI, O'Donnell JS, Sanchez-Luceros A, Lavin M. Examining variability in the diagnosis and management of people with bleeding disorders of unknown cause: communication from the ISTH SSC Subcommittee on von Willebrand Factor. J Thromb Haemost 2024; 22:2900-2909. [PMID: 38866246 DOI: 10.1016/j.jtha.2024.05.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 05/14/2024] [Accepted: 05/15/2024] [Indexed: 06/14/2024]
Abstract
BACKGROUND Bleeding disorder of unknown cause (BDUC) is characterized by a bleeding phenotype in the setting of normal hemostatic testing. No standardized diagnostic criteria or treatment algorithms exist for people with BDUC. To address the unmet need, the International Society on Thrombosis and Haemostasis von Willebrand Factor Scientific Subcommittee performed a real-world survey aimed at addressing knowledge gaps, developing consensus pathways, and ultimately improving care. OBJECTIVES We sought to determine current international clinical practices in the investigation, registration, and treatment of people with BDUC internationally. METHODS An online structured survey was conducted of healthcare providers who managed patients with bleeding disorders using the ISTH RedCap tool. RESULTS Two hundred sixteen respondents from 39 countries were included in the final analysis. The clinical assessment of those with a possible bleeding disorder varied, with only 55% excluding hypermobility but high levels (80%) of bleeding assessment tool usage. In hemostatic testing, only the prothrombin time and activated partial thromboplastin time tests gained universal support. Tranexamic acid was favored for prophylaxis for minor (71%)/major (59%) surgeries and pregnancy (58%), but advice on the treatment if bleeding occurred was heterogeneous. The management of heavy menstrual bleeding in women despite combined oral contraceptive pill use also proved challenging, with healthcare providers selecting multiple alternative strategies. CONCLUSION Significant variation exists in the recognition, registration, and management of people with BDUC worldwide. This survey emphasizes the need for consensus pathways to diagnose and treat BDUC to standardize and improve care for patients internationally.
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Affiliation(s)
- Claire Kelly
- National Coagulation Centre, St. James's Hospital, Dublin, Ireland; Irish Centre for Vascular Biology, School of Pharmacy and Biomedical Sciences, RCSI, Dublin, Ireland
| | - Will Thomas
- Haematology Department, Cambridge University Hospitals National Health Service Foundation Trust, Cambridge, United Kingdom
| | - Ross I Baker
- Western Australia Centre for Thrombosis and Haemostasis, Perth Blood Institute, Murdoch University, Perth, Australia; Hollywood Hospital Haemophilia Treatment Centre, Perth, Australia; Irish-Australian Blood Collaborative Network, Perth, Australia
| | - James S O'Donnell
- National Coagulation Centre, St. James's Hospital, Dublin, Ireland; Irish Centre for Vascular Biology, School of Pharmacy and Biomedical Sciences, RCSI, Dublin, Ireland; Irish-Australian Blood Collaborative Network, Perth, Australia
| | - Analia Sanchez-Luceros
- Department of Haemostasis and Thrombosis, Haematological Research Institute, National Academy of Medicine, Buenos Aires, Argentina; Laboratory of Haemostasis and Thrombosis, Instituto de Medicina ExperimentalConsejo Nacional de Investigaciones Cientificas y Tecnicas-National Academy of Medicine, Buenos Aires, Argentina
| | - Michelle Lavin
- National Coagulation Centre, St. James's Hospital, Dublin, Ireland; Irish Centre for Vascular Biology, School of Pharmacy and Biomedical Sciences, RCSI, Dublin, Ireland.
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Ballard-Kordeliski A, Lee RH, O'Shaughnessy EC, Kim PY, Jones SR, Pawlinski R, Flick MJ, Paul DS, Mackman N, Adalsteinsson DA, Bergmeier W. 4D intravital imaging studies identify platelets as the predominant cellular procoagulant surface in a mouse hemostasis model. Blood 2024; 144:1116-1126. [PMID: 38820498 PMCID: PMC11406176 DOI: 10.1182/blood.2023022608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 05/12/2024] [Accepted: 05/13/2024] [Indexed: 06/02/2024] Open
Abstract
ABSTRACT Interplay between platelets, coagulation factors, endothelial cells (ECs), and fibrinolytic factors is necessary for effective hemostatic plug formation. This study describes a 4-dimensional (4D) imaging platform to visualize and quantify hemostatic plug components in mice with high spatiotemporal resolution. Fibrin accumulation after laser-induced vascular injury was observed at the platelet plug-EC interface, controlled by the antagonistic balance between fibrin generation and breakdown. We observed less fibrin accumulation in mice expressing low levels of tissue factor or F12-/-mice compared with controls, whereas increased fibrin accumulation, including on the vasculature adjacent to the platelet plug, was observed in plasminogen-deficient mice or wild-type mice treated with tranexamic acid. Phosphatidylserine (PS), a membrane lipid critical for the assembly of coagulation factors, was first detected at the platelet plug-EC interface, followed by exposure across the endothelium. Impaired PS exposure resulted in a significant reduction in fibrin accumulation in cyclophilin D-/-mice. Adoptive transfer studies demonstrated a key role for PS exposure on platelets, and to a lesser degree on ECs, in fibrin accumulation during hemostatic plug formation. Together, these studies suggest that (1) platelets are the functionally dominant procoagulant cellular surface, and (2) plasmin is critical for limiting fibrin accumulation at the site of a forming hemostatic plug.
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Affiliation(s)
- Abigail Ballard-Kordeliski
- Department of Biochemistry and Biophysics, The University of North Carolina at Chapel Hill, Chapel Hill, NC
- UNC Blood Research Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Robert H Lee
- Department of Biochemistry and Biophysics, The University of North Carolina at Chapel Hill, Chapel Hill, NC
- UNC Blood Research Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Ellen C O'Shaughnessy
- Department of Cell Biology and Physiology, The University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Paul Y Kim
- Department of Medicine, McMaster University, Hamilton, ON, Canada
- Thrombosis and Atherosclerosis Research Institute, Hamilton, ON, Canada
| | - Summer R Jones
- Department of Biochemistry and Biophysics, The University of North Carolina at Chapel Hill, Chapel Hill, NC
- UNC Blood Research Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Rafal Pawlinski
- UNC Blood Research Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC
- Department of Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Matthew J Flick
- UNC Blood Research Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC
- Department of Pathology and Laboratory Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - David S Paul
- Department of Biochemistry and Biophysics, The University of North Carolina at Chapel Hill, Chapel Hill, NC
- UNC Blood Research Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Nigel Mackman
- UNC Blood Research Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC
- Department of Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - David A Adalsteinsson
- Department of Mathematics, The University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Wolfgang Bergmeier
- Department of Biochemistry and Biophysics, The University of North Carolina at Chapel Hill, Chapel Hill, NC
- UNC Blood Research Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC
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Dell'Orso G, Carlucci M, Cesaro S, Olcese E, Balduzzi A, Vendemini F, Catti M, Saglio F, Compagno F, Maximova N, Rabusin M, Menconi MC, Perruccio K, Soncini E, Tambaro FP, Tintori V, Pagliara D, Faraci M. An expert consensus on prevention, diagnosis, and management of hemorrhagic cystitis in pediatric hematopoietic cell transplantation, on behalf of the Infectious Disease and Hematopoietic Cell Transplant Working groups of Italian Pediatric Hematology Oncology Association (AIEOP). Bone Marrow Transplant 2024; 59:1302-1308. [PMID: 38909124 DOI: 10.1038/s41409-024-02320-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Revised: 05/15/2024] [Accepted: 05/23/2024] [Indexed: 06/24/2024]
Abstract
The optimal management of hemorrhagic cystitis (HC) in hematopoietic stem cell transplantation (HCT) is debated, both for early onset HC (EOHC) secondary to chemotherapy toxicity and BK Polyomavirus (BKPyV)-related HC, due to the lack of controlled trials, particularly referred to pediatric setting. Actually, clinical practice is mainly based on guidelines of the European Conference on Infections in Leukemia, 6th edition, which considers both adult and pediatric populations but concludes that, despite much progress in understanding the pathogenesis, epidemiology, and risk factors, this complication still represents a disabling unmet clinical need with limited prophylactic and therapeutic options. Additionally, the Guidelines of the American Society of Clinical Oncology define the management of chemotherapeutic toxicity independently from the patients' population. A panel of experts belonging to the Hematopoietic Cell Transplant and Infectious Disease Working Group (WG) of Associazione Italiana di Emato-Oncologia Pediatrica (AIEOP) developed a consensus to define the best practices in prevention, diagnosis, and management of HC in pediatric HCT setting.
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Affiliation(s)
- Gianluca Dell'Orso
- Hematopoietic Stem Cell Transplantation Unit, Department of Pediatric Hematology-Oncology, IRCCS, Istituto Giannina Gaslini, Genova, Italy.
| | - Marcello Carlucci
- Pediatric Surgery Unit, IRCCS Istituto Giannina Gaslini, Genova, Italy
| | - Simone Cesaro
- Pediatric Hematology Oncology, Department of Mother and Child, Azienda Ospedaliera Universitaria Integrata Verona, Verona, Italy
| | - Evelina Olcese
- Hematopoietic Stem Cell Transplantation Unit, Department of Pediatric Hematology-Oncology, IRCCS, Istituto Giannina Gaslini, Genova, Italy
| | - Adriana Balduzzi
- Pediatric Transplantation Unit, Department of Medicine and Surgery, University of Milan-Bicocca-Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
- Clinica Pediatrica, Università degli Studi di Milano Bicocca, Fondazione MBBM/Ospedale San Gerardo, ASST, Monza, Italy
| | - Francesca Vendemini
- Pediatric Transplantation Unit, Department of Medicine and Surgery, University of Milan-Bicocca-Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
| | - Massimo Catti
- Division of Pediatric Urology, Department of Pediatrics and Pediatric Specialties, Regina Margherita Children's Hospital, Torino, Italy
| | - Francesco Saglio
- Pediatric Oncohematology, Stem Cell Transplantation and Cell Therapy Division, A.O.U. Città della Salute e della Scienza-Regina Margherita Children's Hospital, Torino, Italy
| | - Francesca Compagno
- Pediatric Hematology Oncology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Natalia Maximova
- Pediatric Hematology-Oncology Unit, Institute for Maternal and Child Health, IRCCS "Burlo Garofolo, ", Trieste, Italy
| | - Marco Rabusin
- Pediatric Hematology-Oncology Unit, Institute for Maternal and Child Health, IRCCS "Burlo Garofolo, ", Trieste, Italy
| | | | - Katia Perruccio
- Pediatric Oncology Hematology, Mother and Child Health Department, Santa Maria della Misericordia Hospital, Perugia, Italy
| | - Elena Soncini
- Pediatric Oncology-Haematology and Bone Marrow Transplantation (BMT) Unit, Spedali Civili di Brescia, Brescia, Italy
| | | | - Veronica Tintori
- Department of Pediatric Hematology/Oncology and Hematopoietic Stem Cell Transplantation, Meyer Children's University Hospital, Firenze, Italy
| | - Daria Pagliara
- Department of Hematology/Oncology, Cell and Gene Therapy, Bambino Gesù Children's Hospital, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Roma, Italy
| | - Maura Faraci
- Hematopoietic Stem Cell Transplantation Unit, Department of Pediatric Hematology-Oncology, IRCCS, Istituto Giannina Gaslini, Genova, Italy
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Vychopen M, Arlt F, Güresir E, Wach J. Intraoperative tranexamic acid administration in cranial meningioma surgery: a meta-analysis of prospective randomized, double-blinded, and placebo-controlled trials. Front Oncol 2024; 14:1464671. [PMID: 39267835 PMCID: PMC11390351 DOI: 10.3389/fonc.2024.1464671] [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] [Received: 07/14/2024] [Accepted: 08/14/2024] [Indexed: 09/15/2024] Open
Abstract
Objective Cranial meningioma surgeries often involve significant blood loss and transfusions. Tranexamic acid (TXA) has been used to reduce blood loss in various surgeries. This meta-analysis of randomized placebo-controlled trials (RCTs) evaluates the impact of TXA in cranial meningioma surgery. Methods Pubmed, Web of Science, and Cochrane Library were searched for RCTs. Studies were compared for: Blood loss, operative time, hospital stay, reoperation rates, allogeneic and autologous transfusion, and incidence of complications. Results Seven RCTs with 490 patients receiving TXA and 491 receiving placebos were included. TXA significantly shortened operative time (Mean Difference (MD): -20.95; 95%CI: -39.94 to -1.95; p=0.03). Blood loss was lower with TXA (MD: -262.7 ml; 95%CI: -397.6 to -127.8; p=0.0001). Odds of reoperation were not significantly different (OR: 0.44; 95%CI: 0.13-1.45; p=0.18). TXA significantly reduced the need for RBC transfusions (OR: 0.47; 95%CI: 0.22-0.99; p<0.05). No significant differences were observed regarding postoperative seizures (OR: 1.06; 95%CI: 0.56-2.03; p=0.85), hydrocephalus (OR: 0.25; 95%CI: 0.03-2.29; p=0.22), or hematoma (OR: 0.52; 95%CI: 0.22-1.28; p=0.16). Hospital stay was shortened in the TXA group (MD: -1.23; 95%CI: -2.41 to -0.05; p=0.04). Conclusion This meta-analysis suggests that a single intraoperative dose of TXA reduces blood loss, allogeneic blood transfusions and shortens surgery time.
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Affiliation(s)
- Martin Vychopen
- Department of Neurosurgery, University Hospital Leipzig, Leipzig, Germany
- Comprehensive Cancer Center Central Germany, University Hospital Leipzig, Leipzig, Germany
| | - Felix Arlt
- Department of Neurosurgery, University Hospital Leipzig, Leipzig, Germany
- Comprehensive Cancer Center Central Germany, University Hospital Leipzig, Leipzig, Germany
| | - Erdem Güresir
- Department of Neurosurgery, University Hospital Leipzig, Leipzig, Germany
- Comprehensive Cancer Center Central Germany, University Hospital Leipzig, Leipzig, Germany
| | - Johannes Wach
- Department of Neurosurgery, University Hospital Leipzig, Leipzig, Germany
- Comprehensive Cancer Center Central Germany, University Hospital Leipzig, Leipzig, Germany
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Mergoum AM, Mergoum AS, Larson NJ, Dries DJ, Cook A, Blondeau B, Rogers FB. Tranexamic Acid Use in the Surgical Arena: A Narrative Review. J Surg Res 2024; 302:208-221. [PMID: 39106732 DOI: 10.1016/j.jss.2024.07.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 07/02/2024] [Accepted: 07/07/2024] [Indexed: 08/09/2024]
Abstract
INTRODUCTION Tranexamic acid (TXA) is a potent antifibrinolytic drug that inhibits the activation of plasmin by plasminogen. While not a new medication, TXA has quickly gained traction across a variety of surgical subspecialties to prevent and treat bleeding. Knowledge on the use of this drug is essential for the modern surgeon to continue to provide excellent care to their patients. METHODS A comprehensive review of the PubMed database was conducted of articles published within the last 10 y (2014-2024) relating to TXA and its use in various surgical subspecialties. Seminal studies regarding the use of TXA older than 10 y were included from the author's archives. RESULTS Indications for TXA are not limited to trauma alone, and TXA is utilized across a variety of surgical subspecialties from neurosurgery to hepatic surgery to control hemorrhage. Overall, TXA is well tolerated with common dose-dependent adverse effects, including headache, nasal symptoms, dizziness, nausea, diarrhea, and fatigue. More severe adverse events are rare and easily mitigated by not exceeding a dose of 50 mg/kg. CONCLUSIONS The administration of TXA as an adjunct to treat trauma saves lives. The ability of TXA to induce seizures is dose dependent with identifiable risk factors, making this serious adverse effect predictable. As for the potential for TXA to cause thrombotic events, uncertainty remains. If this association is proven to be real, the risk will likely be small, since the use of TXA is still advantageous in most situations because of its efficacy for a more common concern, bleeding.
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Affiliation(s)
| | - Adel S Mergoum
- Department of Surgery, Regions Hospital, Saint Paul, Minnesota
| | | | - David J Dries
- Department of Surgery, Regions Hospital, Saint Paul, Minnesota
| | - Alan Cook
- Department of Surgery, University of Texas at Tyler School of Medicine, Tyler, Texas
| | - Benoit Blondeau
- Department of Surgery, Regions Hospital, Saint Paul, Minnesota
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6
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Tofighi S, Hekmatfar F, Tavakolizadeh M, Garrosi L, Gholami H, Haghighi M. Could tranexamic acid be a suitable alternative to cryotherapy for symptomatic cervical ectopy? Results from a randomized clinical trial. Int J Gynaecol Obstet 2024; 166:727-734. [PMID: 38551066 DOI: 10.1002/ijgo.15458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 01/17/2024] [Accepted: 02/20/2024] [Indexed: 07/18/2024]
Abstract
OBJECTIVE Cervical ectropion occurs due to the eversion of the endocervix that exposes glandular cells to the vaginal milieu. The aim of the present study was to evaluate and compare the clinical efficacy of effervescent vaginal tablets of tranexamic acid and cryotherapy in women with symptomatic cervical ectopy. METHODS The current randomized clinical trial was conducted on 92 samples of women with cervical erosive ectropion from March 20, 2022 to August 27, 2022. Participants were divided into two groups; the intervention group (n = 46) was treated with a 400 mg effervescent vaginal tablet of tranexamic acid and the control group (n = 46) underwent cryotherapy. All the patients were requested to visit weekly in the first month and then monthly for the next 3 months, and the outcomes encompass improvement of symptoms (leukorrhea, dyspareunia, pelvic pain, post-coital bleeding, and suprapubic pain) and cervical erosive ectropion view were monitored based on repeated examinations. RESULTS In this study, no statistically significant difference was observed in cure rate of symptoms between study groups (P value > 0.05). Women in both the tranexamic acid and cryotherapy groups reported significant improvements in dyspareunia (34 [75%] vs 31 [67%]), pelvic pain (34 [75%] vs 34 [74%]), post-coital bleeding (37 [81%] vs 31 [67%]), leukorrhea (36 [78%] vs 36 [78%]), suprapubic pain (32 [71%] vs 33 [73%]) disappearance of cervical ectropion tranexamic acid (40 [86%], vs 39 [84%]). CONCLUSION Our findings highlighted the equal effect of tranexamic acid and cryotherapy for treating cervical ectropion. Due to the ease of use, availability, and fewer side effects of tranexamic acid, it can be a suitable alternative to cryotherapy. TRIAL REGISTRATION IRCT20220115053719N1. The name of the registry: Iranian Registry of Clinical Trials. URL of registration: https://en.irct.ir/trial/61483.
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Affiliation(s)
- Shabnam Tofighi
- Department of Obstetrics and Gynecology, Mosavi Hospital, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Farzaneh Hekmatfar
- Department of Obstetrics and Gynecology, Mosavi Hospital, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Mahdi Tavakolizadeh
- Department of Pharmacognosy, School of Pharmacy, Zanjan University of Medical Sciences, Zanjan, Iran
- Department of Pharmacognosy and Pharmaceutical Biotechnology, School of Pharmacy, Iran University of Medical Sciences, Tehran, Iran
| | - Lida Garrosi
- Department of Obstetrics and Gynecology, Mosavi Hospital, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Hamideh Gholami
- Department of Obstetrics and Gynecology, Mosavi Hospital, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Maryam Haghighi
- Department of Research and Development, Amin Pharmaceutical Company, Isfahan, Iran
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Kim DJ, Cho SY, Jung KT. Tranexamic acid - a promising hemostatic agent with limitations: a narrative review. Korean J Anesthesiol 2024; 77:411-422. [PMID: 37599607 PMCID: PMC11294883 DOI: 10.4097/kja.23530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 08/21/2023] [Indexed: 08/22/2023] Open
Abstract
Tranexamic acid (TXA) is a synthetic antifibrinolytic agent that has been used for several decades to reduce blood loss during surgery and after trauma. TXA was traditionally used to reduce bleeding in various clinical settings such as menorrhagia, hemophilia, or other bleeding disorder. Numerous studies have demonstrated the efficacy of TXA in reducing blood loss and the need for transfusions. Interest in the potential applications of TXA beyond its traditional use has been growing recently, with studies investigating the use of TXA in postpartum hemorrhage, cardiac surgery, trauma, neurosurgery, and orthopedic surgery. Despite its widespread use and expanding indications, data regarding the safe and appropriate use of TXA is lacking. Recent clinical trials have found various potential risks and limitations in the long-term benefits of TXA. This narrative review summarizes the clinical applications and limitations of TXA.
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Affiliation(s)
- Dong Joon Kim
- Department of Anesthesiology and Pain Medicine, Chosun University Hospital, Chosun University College of Medicine and Medical School, Gwangju, Korea
| | - Su Yeon Cho
- Department of Anesthesiology and Pain Medicine, Chosun University Hospital, Chosun University College of Medicine and Medical School, Gwangju, Korea
| | - Ki Tae Jung
- Department of Anesthesiology and Pain Medicine, Chosun University Hospital, Chosun University College of Medicine and Medical School, Gwangju, Korea
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Al-Huniti A, Marshall L, Rusk D, Pruthi RK, Rodriguez V, Ferdjallah A, Kuhn A. Use of crushed tranexamic acid tablets in water for paediatric patients with bleeding disorders. Haemophilia 2024; 30:648-657. [PMID: 38507239 DOI: 10.1111/hae.14996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 01/18/2024] [Accepted: 02/27/2024] [Indexed: 03/22/2024]
Abstract
BACKGROUND Ε-Aminocaproic acid oral solution (EACA OS) is the only commercially available antifibrinolytic for patients who cannot swallow tablets. Insurance denials and high costs remain barriers to its use. OBJECTIVES To determine the safety and efficacy of crushed tranexamic acid tablets in water (cTXAw) for children with bleeding disorders. METHODS We retrospectively reviewed records of children (<10 years) with bleeding disorders who received cTXAw or EACA OS from 1 December 2018, through 31 July 2022, at Mayo Clinic (Rochester, Minnesota). Bleeding outcomes were defined according to ISTH criteria. RESULTS Thirty-two patients were included (median age, 3 years; male, n = 23). Diagnoses were VWD (n = 17), haemophilia (n = 5), FVII deficiency (n = 3), inherited platelet disorder (n = 4), ITP (n = 2), and combined FV and FVII deficiencies (n = 1). Thirty-two courses of cTXAw (monotherapy 24/32; mean duration 6 days) and fifteen courses of EACA (monotherapy 12/15; mean duration 5 days) were administered. No surgical procedures (n = 28) were complicated by bleeding. Of the 19 bleeding events, 16 had effective haemostasis, two had no reported outcome, and one had no response. cTXAw and EACA were equally effective in preventing and treating bleeding (p value > .1). No patients had adverse effects. Eight of 19 patients (42%) who were initially prescribed EACA OS did not receive it because of cost or insurance denial. The estimated average wholesale price of one treatment was $94 for cTXAw and $905 for EACA OS. CONCLUSIONS CTXAw appears to be an effective, safe, and low-cost alternative option to EACA OS for young children with bleeding disorders.
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Affiliation(s)
- Ahmad Al-Huniti
- Division of Pediatric Hematology/Oncology, Mayo Clinic, Rochester, Minnesota, USA
| | - Linda Marshall
- Department of Pharmacy, Mayo Clinic, Rochester, Minnesota, USA
| | - Dawn Rusk
- Department of Nursing, Mayo Clinic, Rochester, Minnesota, USA
| | - Rajiv K Pruthi
- Division of Hematology, Mayo Clinic, Rochester, Minnesota, USA
| | - Vilmarie Rodriguez
- Division of Hematology/Oncology and BMT, Nationwide Children's Hospital, Columbus, Ohio, USA
| | - Asmaa Ferdjallah
- Division of Pediatric Hematology/Oncology, Mayo Clinic, Rochester, Minnesota, USA
| | - Alexis Kuhn
- Department of Pharmacy, Mayo Clinic, Rochester, Minnesota, USA
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9
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Barg AA, Livnat T, Kenet G. Factor XI deficiency: phenotypic age-related considerations and clinical approach towards bleeding risk assessment. Blood 2024; 143:1455-1464. [PMID: 38194679 DOI: 10.1182/blood.2023020721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 12/22/2023] [Accepted: 12/29/2023] [Indexed: 01/11/2024] Open
Abstract
ABSTRACT Factor XI (FXI) deficiency is a rare bleeding disorder that presents complex challenges in patient assessment and bleeding risk management. Despite generally causing mild to moderate bleeding symptoms, clinical manifestations can vary, and bleeding tendency does not always correlate with FXI plasma levels or genotype. Our manuscript delves into the age-related nuances of FXI deficiency across an individual's lifespan. We emphasize issues faced by specific groups, including neonates and females of reproductive age experiencing abnormal uterine bleeding and postpartum hemorrhage. Older patients present unique challenges and concerns related to the management of bleeding as well as thrombotic complications. The current assortment of diagnostic laboratory assays shows limited success in predicting bleeding risk in the perisurgical setting of patients with FXI deficiency. This review explores the intricate interplay between individual bleeding profiles, surgical sites, and FXI activity levels. We also evaluate the accuracy of existing laboratory assays in predicting bleeding and discuss the potential role of investigational global assays in perioperative assessment. Furthermore, we outline our suggested diagnostic approach to refine treatment strategies and decision making. Available treatment options are presented, including antifibrinolytics, replacement products, and recombinant activated FVII. Finally, we discuss promising nonreplacement therapies for the treatment of rare bleeding disorders that can potentially address the challenges faced when managing FXI deficiency-related bleeding complications.
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Affiliation(s)
- Assaf Arie Barg
- National Hemophilia Center, Coagulation Unit and Amalia Biron Research Institution of Thrombosis and Hemostasis, Sheba Medical Center, Tel Hashomer, Israel; and Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Tami Livnat
- National Hemophilia Center, Coagulation Unit and Amalia Biron Research Institution of Thrombosis and Hemostasis, Sheba Medical Center, Tel Hashomer, Israel; and Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Gili Kenet
- National Hemophilia Center, Coagulation Unit and Amalia Biron Research Institution of Thrombosis and Hemostasis, Sheba Medical Center, Tel Hashomer, Israel; and Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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Montano-Pedroso JC, Perini FV, Donizetti E, Oliveira LC, Rodrigues RDR, Rizzo SRCP, Rabello G, Langhi DM. Consensus of the Brazilian association of hematology, hemotherapy and cellular therapy on patient blood management: Antifibrinolytics. Hematol Transfus Cell Ther 2024; 46 Suppl 1:S40-S47. [PMID: 38555249 PMCID: PMC11069061 DOI: 10.1016/j.htct.2024.02.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Accepted: 02/18/2024] [Indexed: 04/02/2024] Open
Abstract
The use of strategies to reduce blood loss and transfusions is essential in the treatment of surgical patients, including in complex cardiac surgeries and those that use cardiopulmonary bypass. Antifibrinolytics, such as epsilon-aminocaproic acid (EACA) and tranexamic acid (TXA), are widely used in these procedures, as well as in other types of surgeries. These medicines are included in the World Health Organization (WHO) list of 'essential medicines'. Scientific evidence demonstrates the effectiveness of EACA in reducing bleeding and the need for transfusions in heart surgery. EACA is highly recommended for use in heart surgery by the American Society of Anesthesiology Task Force on Perioperative Blood Management. Regarding the safety of EACA, there is no robust evidence of any significant thrombotic potential. TXA has also been shown to be effective in reducing the use of blood transfusions in cardiac and non-cardiac surgeries and is considered safer than other antifibrinolytic agents. There is no evidence of any increased risk of thromboembolic events with TXA, but doses greater than 2 g per day have been associated with an increased risk of seizures. It is also important to adjust the dose in patients with renal impairment. In conclusion, antifibrinolytics, such as EACA and TXA, are effective in reducing blood loss and transfusion use in cardiac and non-cardiac surgeries, without causing serious adverse effects.
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Affiliation(s)
- Juan Carlos Montano-Pedroso
- Universidade Federal de São Paulo (Unifesp), São Paulo, SP, Brazil; Instituto de Assistência Médica do Servidor Público Estadual (Iamspe), São Paulo, SP, Brazil
| | - Fernanda Vieira Perini
- Grupo GSH - Gestor de Serviços de Hemoterapia, São Paulo, SP, Brazil; Associação Beneficente Síria HCOR, São Paulo, SP, Brazil
| | | | - Luciana Correa Oliveira
- Hemocentro de Ribeirão Preto, Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (HCFMRP-USP), Ribeirão Preto, SP, Brazil
| | - Roseny Dos Reis Rodrigues
- Hospital Israelita Albert Einstein são Paulo, São Paulo, SP, Brazil; Faculdade de Medicina da Universidade de São Paulo (FM USP), São Paulo, SP, Brazil
| | | | - Guilherme Rabello
- Instituto do Coração do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (Incor - HCFMUSP), São Paulo, SP, Brazil.
| | - Dante Mario Langhi
- Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM UNIFESP), São Paulo, SP, Brazil
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11
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Wend CM, Fransman RB, Haut ER. Prehospital Trauma Care. Surg Clin North Am 2024; 104:267-277. [PMID: 38453301 DOI: 10.1016/j.suc.2023.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2024]
Abstract
Prehospital trauma evaluation begins with the primary assessment of airway, breathing, circulation, disability, and exposure. This is closely followed by vital signs and a secondary assessment. Key prehospital interventions include management and resuscitation according to the aforementioned principles with a focus on major hemorrhage control, airway compromise, and invasive management of tension pneumothorax. Determining the appropriate time and method for transportation (eg, ground ambulance, helicopter, police, private vehicle) to the hospital or when to terminate resuscitation are also important decisions to be made by emergency medical services clinicians.
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Affiliation(s)
- Christopher M Wend
- Department of Emergency Medicine, Johns Hopkins University School of Medicine, 1830 East Monument Street Suite 6-100, Baltimore, MD 21287, USA
| | - Ryan B Fransman
- Department of Trauma, Acute Care Surgery, and Surgical Critical Care, Emory University School of Medicine, Grady Memorial Hospital, 80 Jesse Hill Jr. Drive, SE, Atlanta, GA 30303, USA
| | - Elliott R Haut
- Department of Emergency Medicine, Johns Hopkins University School of Medicine, 1830 East Monument Street Suite 6-100, Baltimore, MD 21287, USA; Department of Surgery, Division of Acute Care Surgery, Johns Hopkins University School of Medicine, Sheikh Zayed 6107C, 1800 Orleans Street, Baltimore, MD 21287, USA; Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Health Policy and Management, The Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
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12
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Xie W, Jiang S, Donat A, Knapstein PR, Albertsen LC, Kokot JL, Erdmann C, Rolvien T, Frosch KH, Baranowsky A, Keller J. Tranexamic Acid Attenuates the Progression of Posttraumatic Osteoarthritis in Mice. Am J Sports Med 2024; 52:766-778. [PMID: 38305280 PMCID: PMC10905980 DOI: 10.1177/03635465231220855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 10/25/2023] [Indexed: 02/03/2024]
Abstract
BACKGROUND Posttraumatic osteoarthritis (OA) is a common disorder associated with a high socioeconomic burden, particularly in young, physically active, and working patients. Tranexamic acid (TXA) is commonly used in orthopaedic trauma surgery as an antifibrinolytic agent to control excessive bleeding. Previous studies have reported that TXA modulates inflammation and bone cell function, both of which are dysregulated during posttraumatic OA disease progression. PURPOSE To evaluate the therapeutic effects of systemic and topical TXA treatment on the progression of posttraumatic OA in the knee of mice. STUDY DESIGN Controlled laboratory study. METHODS OA was induced via anterior cruciate ligament (ACL) transection on the right knee of female mice. Mice were treated with TXA or vehicle intraperitoneally daily or intra-articularly weekly for 4 weeks, starting on the day of surgery. Articular cartilage degeneration, synovitis, bone erosion, and osteophyte formation were scored histologically. Micro-computed tomography evaluation was conducted to measure the subchondral bone microstructure and osteophyte volume. Cartilage thickness and bone remodeling were assessed histomorphometrically. RESULTS Both systemic and topical TXA treatment significantly reduced cartilage degeneration, synovitis, and bone erosion scores and increased the ratio of hyaline to calcified cartilage thickness in posttraumatic OA. Systemic TXA reversed ACL transection-induced subchondral bone loss and osteophyte formation, whereas topical treatment had no effect. Systemic TXA decreased the number and surface area of osteoclasts, whereas those of osteoblasts were not affected. No effect of topical TXA on osteoblast or osteoclast parameters was observed. CONCLUSION Both systemic and topical TXA exerted protective effects on the progression of posttraumatic OA. Drug repurposing of TXA may, therefore, be useful for the prevention or treatment of posttraumatic OA, particularly after ACL surgery. CLINICAL RELEVANCE TXA might be beneficial in patients with posttraumatic OA of the knee.
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Affiliation(s)
- Weixin Xie
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Shan Jiang
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Antonia Donat
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Paul Richard Knapstein
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Lilly-Charlotte Albertsen
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Judith Luisa Kokot
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Cordula Erdmann
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Tim Rolvien
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Karl-Heinz Frosch
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Anke Baranowsky
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Johannes Keller
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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13
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VanderMeulen H, Tang GH, Sholzberg M. Tranexamic acid for management of heavy vaginal bleeding: barriers to access and myths surrounding its use. Res Pract Thromb Haemost 2024; 8:102389. [PMID: 38623473 PMCID: PMC11017359 DOI: 10.1016/j.rpth.2024.102389] [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: 01/02/2024] [Revised: 03/09/2024] [Accepted: 03/11/2024] [Indexed: 04/17/2024] Open
Abstract
Tranexamic acid is safe and effective for the treatment of heavy vaginal bleeding during menstruation and childbirth. It improves the quality of life, facilitates participation in school and work, and reduces the risk of death from postpartum hemorrhage. Despite its well-established benefits, individual- and structural-level barriers preclude its widespread utilization, hindering effective patient care and perpetuating health inequities in women's health. We first describe the evidence for the use of tranexamic acid in treating heavy menstrual bleeding and postpartum hemorrhage. Barriers to tranexamic acid use, including structural sexism, period poverty, misinformation in product monograph labeling, stigmatization of vaginal blood loss, and drug access, are then discussed. Finally, we summarize relevant data presented during the 2023 International Society on Thrombosis and Haemostasis Congress.
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Affiliation(s)
- Heather VanderMeulen
- Department of Medicine, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Grace H. Tang
- Department of Hematology, Hematology-Oncology Clinical Research Group, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Michelle Sholzberg
- Department of Medicine and Laboratory Medicine & Pathobiology, St. Michael’s Hospital, Toronto, Ontario, Canada
- Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, Ontario, Canada
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14
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Simovic MO, Bynum J, Liu B, Dalle Lucca JJ, Li Y. Impact of Immunopathy and Coagulopathy on Multi-Organ Failure and Mortality in a Lethal Porcine Model of Controlled and Uncontrolled Hemorrhage. Int J Mol Sci 2024; 25:2500. [PMID: 38473750 DOI: 10.3390/ijms25052500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/07/2024] [Accepted: 02/14/2024] [Indexed: 03/14/2024] Open
Abstract
Uncontrolled hemorrhage is a major preventable cause of death in patients with trauma. However, the majority of large animal models of hemorrhage have utilized controlled hemorrhage rather than uncontrolled hemorrhage to investigate the impact of immunopathy and coagulopathy on multi-organ failure (MOF) and mortality. This study evaluates these alterations in a severe porcine controlled and uncontrolled hemorrhagic shock (HS) model. Anesthetized female swine underwent controlled hemorrhage and uncontrolled hemorrhage by partial splenic resection followed with or without lactated Ringer solution (LR) or Voluven® resuscitation. Swine were surveyed 6 h after completion of splenic hemorrhage or until death. Blood chemistry, physiologic variables, systemic and tissue levels of complement proteins and cytokines, coagulation parameters, organ function, and damage were recorded and assessed. HS resulted in systemic and local complement activation, cytokine release, hypocoagulopathy, metabolic acidosis, MOF, and no animal survival. Resuscitation with LR and Voluven® after HS improved hemodynamic parameters (MAP and SI), metabolic acidosis, hyperkalemia, and survival but resulted in increased complement activation and worse coagulopathy. Compared with the LR group, the animals with hemorrhagic shock treated with Voluven® had worse dilutional anemia, coagulopathy, renal and hepatic dysfunction, increased myocardial complement activation and renal damage, and decreased survival rate. Hemorrhagic shock triggers early immunopathy and coagulopathy and appears associated with MOF and death. This study indicates that immunopathy and coagulopathy are therapeutic targets that may be addressed with a high-impact adjunctive treatment to conventional resuscitation.
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Affiliation(s)
- Milomir O Simovic
- US Army Institute of Surgical Research, Fort Sam Houston, TX 78234, USA
- The Geneva Foundation, Tacoma, WA 98402, USA
- Department of Surgery, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - James Bynum
- US Army Institute of Surgical Research, Fort Sam Houston, TX 78234, USA
- Department of Surgery, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Bin Liu
- US Army Institute of Surgical Research, Fort Sam Houston, TX 78234, USA
| | | | - Yansong Li
- US Army Institute of Surgical Research, Fort Sam Houston, TX 78234, USA
- The Geneva Foundation, Tacoma, WA 98402, USA
- Department of Surgery, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
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15
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Vuong ADB, Pham TH, Bui VH, Nguyen XT, Trinh NB, Nguyen YON, Le DKT, Nguyen PN. Successfully conservative management of the uterus in acute pulmonary embolism during cesarean section for placenta previa: a case report from Tu Du Hospital, Vietnam and literature review. Int J Emerg Med 2024; 17:14. [PMID: 38287235 PMCID: PMC10823749 DOI: 10.1186/s12245-024-00587-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Accepted: 01/12/2024] [Indexed: 01/31/2024] Open
Abstract
BACKGROUND Cardiopulmonary collapse is a catastrophic event in cesarean section, which leads to adverse outcomes for both the mother and the fetus. Pulmonary embolism is one of the rare etiologies of this entity. We herein reported the successful management of acute embolism pulmonary associated with cesarean delivery on a healthy pregnant woman at our tertiary referral hospital. CASE PRESENTATION A full-term pregnant woman hospitalized for planned cesarean delivery due to placenta previa without cardiorespiratory diseases. She was scheduled uneventfully for a planned cesarean section. After placental delivery, the patient spontaneously fell into cardiopulmonary collapse and her vital signs deteriorated rapidly. The obstetricians promptly completed the cesarean section and performed all procedures to prevent the PPH and preserve the uterus. At the same time, the anesthesiologists continued to carry out advanced heart-lung resuscitation in order to control her vital signs. After surgery, the multidisciplinary team assessed the patient and found a thrombus in her pulmonary circulation. Therefore, the patient was managed with therapeutic anticoagulation. The patient recovered in good clinical condition and was discharged after 2 weeks without any complications. CONCLUSIONS The diagnosis of acute pulmonary embolism is extremely difficult due to uncommon occurrence, sudden onset, and non-specific presentation. Awareness of this life-threatening pathology during cesarean delivery should be raised. Interdisciplinary assessment must be essentially established in this life-threatening condition. After the whole conventional management, uterine conservation may be acceptable where applicable. Further data is required to encourage this finding.
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Affiliation(s)
- Anh Dinh Bao Vuong
- Department of High-Risk Pregnancy, Tu Du Hospital, 284 Cong Quynh, Pham Ngu Lao Ward, District 1, Ho Chi Minh City, 71012, Vietnam
| | - Thanh Hai Pham
- Tu Du Clinical Research Unit (TD-CRU), Tu Du Hospital, Ho Chi Minh City, Vietnam
| | - Van Hoang Bui
- Integrated Planning Room, Tu Du Hospital, Ho Chi Minh City, Vietnam
| | - Xuan Trang Nguyen
- Department of High-Risk Pregnancy, Tu Du Hospital, 284 Cong Quynh, Pham Ngu Lao Ward, District 1, Ho Chi Minh City, 71012, Vietnam
| | - Ngoc Bich Trinh
- Department of High-Risk Pregnancy, Tu Du Hospital, 284 Cong Quynh, Pham Ngu Lao Ward, District 1, Ho Chi Minh City, 71012, Vietnam
| | - Yen Oanh Ngoc Nguyen
- Department of High-Risk Pregnancy, Tu Du Hospital, 284 Cong Quynh, Pham Ngu Lao Ward, District 1, Ho Chi Minh City, 71012, Vietnam
| | - Dang Khoa Tran Le
- Department of High-Risk Pregnancy, Tu Du Hospital, 284 Cong Quynh, Pham Ngu Lao Ward, District 1, Ho Chi Minh City, 71012, Vietnam
| | - Phuc Nhon Nguyen
- Department of High-Risk Pregnancy, Tu Du Hospital, 284 Cong Quynh, Pham Ngu Lao Ward, District 1, Ho Chi Minh City, 71012, Vietnam.
- Tu Du Clinical Research Unit (TD-CRU), Tu Du Hospital, Ho Chi Minh City, Vietnam.
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16
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Holle LA, Pantazis JC, Turecek PL, Wolberg AS. Clot formation and fibrinolysis assays reveal functional differences among hemostatic agents in hemophilia A plasma. Res Pract Thromb Haemost 2024; 8:102337. [PMID: 38426025 PMCID: PMC10901841 DOI: 10.1016/j.rpth.2024.102337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 12/21/2023] [Accepted: 01/16/2024] [Indexed: 03/02/2024] Open
Abstract
Background Measuring the activity of hemostatic agents used to treat hemophilia A often requires drug-specific assays. In vitro assays show hemophilic clots have abnormal characteristics, including prolonged clotting time and decreased resistance to fibrinolysis. The ability of certain agents to correct these parameters in vitro is associated with hemostatic efficacy in vivo. Objectives To compare effects of established and emerging hemostatic agents on clot formation and fibrinolysis in hemophilia A plasma. Methods Pooled and individual hemophilia A platelet-poor plasmas were spiked with replacement (recombinant factor VIII [rFVIII], PEGylated rFVIII, polysialylated rFVIII, and porcine rFVIII) or bypassing (emicizumab, rFVIIa, and activated prothrombin complex concentrate) products. Effects on tissue factor-initiated clot formation and fibrinolysis were measured by turbidity. Results Compared to normal pooled plasma, hemophilia-pooled plasma showed reduced clot formation and increased fibrinolysis, and all replacement agents improved these characteristics. rFVIII and PEGylated rFVIII produced similar effects at similar concentrations, whereas polysialylated rFVIII produced slightly higher and porcine rFVIII slightly lower effects at these concentrations. Bypassing agents enhanced clot formation and stability, but patterns differed from replacement agents. The clotting rate showed a concentration-response relationship for all agents. High concentrations of all products produced effects that exceeded the normal range in at least some parameters. Responses of individual donors varied, but all agents improved clot formation and stability in all donors tested. Conclusion Clotting and fibrinolysis assays reveal hemostatic effects of replacement and bypassing therapies at clinically relevant concentrations. These assays may help characterize hemostatic agents and optimize dosing.
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Affiliation(s)
- Lori A. Holle
- Department of Pathology and Laboratory Medicine and UNC Blood Research Center, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Jacob C. Pantazis
- Department of Pathology and Laboratory Medicine and UNC Blood Research Center, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Peter L. Turecek
- Plasma-Derived Therapies R&D, Baxalta Innovations GmbH – Takeda, Vienna, Austria
| | - Alisa S. Wolberg
- Department of Pathology and Laboratory Medicine and UNC Blood Research Center, University of North Carolina, Chapel Hill, North Carolina, USA
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17
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Jakowenko ND, Seelhammer TG, Nabzdyk CGS, Macielak RJ, Nei SD, Kalvelage EL, Wieruszewski PM. Tranexamic Acid for Bleeding Management in Adult Patients on Extracorporeal Membrane Oxygenation. ASAIO J 2023; 69:e474-e481. [PMID: 37913503 DOI: 10.1097/mat.0000000000002056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023] Open
Abstract
This study described the outcomes of patients receiving topical, nebulized, endobronchial, or systemic tranexamic acid (TXA) for bleeding events while on extracorporeal membrane oxygenation (ECMO). We performed a single-center case series including adult patients >18 years old supported on either venovenous (VV) or venoarterial (VA) ECMO from January 1, 2014, to April 21, 2021. The primary outcome was hemostatic control defined as a composite of initial cessation of therapeutic interventions to mitigate bleeding or resumption of anticoagulation if previously held. Secondary outcomes included changes in transfusion requirements and lysis at 30-minute (LY30) values, venous thromboembolism (VTE) events, and seizures. In total, 47 patients were included for full analysis. There were 19 patients with surgical bleeds, 18 patients with medical bleeds, and 10 patients with multiple bleeds. Overall, initial hemostatic control was achieved in 79%, 67%, and 90% of patients, respectively. Pre- and post-TXA transfusion requirements were not significantly different ( p = 0.2), although the intraindividual change in median LY30 was -5.1% compared with baseline (95% confidence interval [CI], -12.4% to -1.5%, p = 0.005). The occurrence of VTE and seizures was relatively low and similar among patient bleeding groups. Tranexamic acid provided initial hemostatic control in roughly three quarters of patients with bleeding events on ECMO and side effects were infrequent.
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Affiliation(s)
| | | | | | - Robert J Macielak
- Department of Otolaryngology-Head and Neck Surgery, Mayo Clinic, Rochester, Minnesota
| | - Scott D Nei
- From the Department of Pharmacy, Mayo Clinic, Rochester, Minnesota
| | - Errin L Kalvelage
- Department of Cardiovascular Surgery, Mayo Clinic, Rochester, Minnesota
| | - Patrick M Wieruszewski
- From the Department of Pharmacy, Mayo Clinic, Rochester, Minnesota
- Department of Anesthesiology, Mayo Clinic, Rochester, Minnesota
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18
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Cui Y, Chen I, Chernoff A, Clancy A. Effectiveness of prophylactic pharmacological hemostatic agents for reduction of blood loss at vaginal surgery: a systematic review and meta-analysis. Int Urogynecol J 2023; 34:2945-2957. [PMID: 37584705 DOI: 10.1007/s00192-023-05614-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Accepted: 06/16/2023] [Indexed: 08/17/2023]
Abstract
INTRODUCTION AND HYPOTHESIS The objective was to evaluate the effectiveness of pharmacological hemostatic agents in the reduction of blood loss at vaginal surgery. METHODS A systematic review of randomized control trials (RCTs) was completed. We searched PubMed (1946-2022), Embase, and CINAHL, using search terms related to vaginal hysterectomies and reconstructive surgeries combined with peri-operative use of hemostatic agents. RCTs comparing hemostatic interventions with placebo or with standard care were analyzed with the primary outcome of estimated blood loss. Secondary outcomes included peri-operative complications, length of stay, blood transfusion, and readmission. Risk of bias was assessed using the Risk of Bias 2 tool. RESULTS Nine RCTs were included with a total of 903 participants. All trials were considered to have an overall low risk of bias. Meta-analysis of six RCTs (491 participants) favored the use of vasoconstrictive agent (vasopressin/ornipressin) at the surgical site for an overall effect estimate of decreased blood loss by 70 ml (95% CI -125, -14 ml). There was significant heterogeneity of studies with both dose and technique of vasoconstrictive agents used. Only one RCT evaluated tranexamic acid and found a benefit in the prophylactic use of intravenous tranexamic acid. CONCLUSIONS Peri-operative use of vasoconstrictive agents slightly reduces bleeding in women undergoing elective vaginal surgery. Additional studies evaluating alternative pharmacological agents such as tranexamic acid may be of benefit.
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Affiliation(s)
- Yiming Cui
- Department of Obstetrics and Gynecology, The Ottawa Hospital, Ottawa, ON, Canada
- University of Ottawa, 501 Smyth Road, Ottawa, ON, Canada
| | - Innie Chen
- Department of Obstetrics and Gynecology, The Ottawa Hospital, Ottawa, ON, Canada
- University of Ottawa, 501 Smyth Road, Ottawa, ON, Canada
- The Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Andie Chernoff
- University of Ottawa, 501 Smyth Road, Ottawa, ON, Canada
| | - Aisling Clancy
- University of Ottawa, 501 Smyth Road, Ottawa, ON, Canada.
- The Ottawa Hospital Research Institute, Ottawa, ON, Canada.
- Department of Obstetrics and Gynecology, Division of Urogynecology and Pelvic Reconstructive Surgery, The Ottawa Hospital, Ottawa, ON, Canada.
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19
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Ji X, Wang X, Shi L, Tian F. Postoperative clinical outcomes with and without short-term intravenous tranexamic acid after posterior lumbar interbody fusion: A prospective cohort study. Medicine (Baltimore) 2023; 102:e35911. [PMID: 37986288 PMCID: PMC10659680 DOI: 10.1097/md.0000000000035911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 10/10/2023] [Accepted: 10/12/2023] [Indexed: 11/22/2023] Open
Abstract
The use of tranexamic acid (TXA) in posterior lumbar interbody fusion (PLIF) surgery is believed to be beneficial for reducing intraoperative blood loss, postoperative drainage volume (PDV), and length of hospital stay (LOS). However, whether continued administration of intravenous TXA within 24 hours after surgery is more beneficial to patients has not yet been studied. This study prospectively analyzed the perioperative outcomes of patients who received and did not receive intravenous TXA within 24 hours after PLIF (≥2 segments) surgery from January 2018 to December 2021. A total of 78 and 69 patients were included in the TXA (receive intravenous TXA intraoperatively and within 24 hours postoperatively) and non-TXA (only receive intravenous TXA intraoperatively) groups, respectively. No significant differences were observed in the intraoperative blood loss and operative time between the 2 groups. The postoperative drainage volume, postoperative drainage time, and length of hospital stay in the TXA group were significantly lower than those in the non-TXA group. The rates and volumes of postoperative blood and albumin transfusions were significantly lower in the TXA group than those in the non-TXA group. No significant differences were observed in the perioperative complication rates between the 2 groups. No increase in thrombosis-related complications was observed with postoperative TXA administration. Short-term TXA use after PLIF (≥2 segments) surgery is safe. In addition to intraoperative use of TXA, additionally administration of intravenous TXA within 24 hours postoperatively can improve the perioperative clinical outcomes of patients without increasing the risk of thrombotic events.
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Affiliation(s)
- Xianqun Ji
- Department of Orthopedics, Xiangyang No. 1 People’s Hospital, Hubei University of Medicine, Xiangyang, China
| | - Xiaochen Wang
- Department of Pharmacy, Shengli Oilfield Central Hospital, Dongying, Shandong, China
| | - Liang Shi
- Department of Orthopedics, Xiangyang No. 1 People’s Hospital, Hubei University of Medicine, Xiangyang, China
| | - Fangtao Tian
- Department of Orthopedics, Xiangyang No. 1 People’s Hospital, Hubei University of Medicine, Xiangyang, China
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20
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Liu R, Li Y, Richard SA, Lan Z, Liu X. Rapid disappearance of acute subdural hematoma due to abrogated hyper-fibrinolytic activity by tranexamic acid: Case report. Medicine (Baltimore) 2023; 102:e35998. [PMID: 37960780 PMCID: PMC10637492 DOI: 10.1097/md.0000000000035998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 10/17/2023] [Indexed: 11/15/2023] Open
Abstract
RATIONALE Acute subdural hematoma (ASDH) occurs after tearing of bridging veins within the dura resulting in the accumulation of blood between the arachnoid and dura layers within 72 hours after traumatic head injury. Also, antigen fibrin D-dimer (DD) is the principal enzymatic degradation product of cross-linked fibrin by plasmin. We observed that early tranexamic acid (TXA) treatment resolved hyper-fibrinolysis and rapid disappearance ASDH. PATIENTS CONCERNS A 48-year-old female presented with unconsciousness for 2 hours after head trauma. Her Glasgow Coma Scale score was >8 points. DIAGNOSIS Computed tomography scan established ASDH with midline shift and brainstem compression and surgery was scheduled. Also, laboratory results indicated high DD spike of 34,820 μg/L and a reduction in plasma fibrinogen 1 hour after the injury. INTERVENTION She was treated with intravenous TXA immediately after admission. OUTCOMES Her DD spike decreased remarkably in 48 hours with associated rapid disappearance of ASDH thereby averting surgical intervention. She recovered fully with no long-term complications. LESSONS Historically, hyper-fibrinolysis is associated with poor outcome in head trauma. However, early initiation of TXA which is noninvasive treatment modality for ASDH could avert surgery and reduce cost, anesthesia, and other complications associated with surgery.
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Affiliation(s)
- Rong Liu
- Department of Neurosurgery, West China Hospital, Sichuan University, Sichuan, China
| | - Yan Li
- Department of Intensive Care Unit, Luojiang People’s Hospital, Sichuan, China
| | - Seidu A. Richard
- Department of Neurosurgery, West China Hospital, Sichuan University, Sichuan, China
- Institute of Neuroscience, Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zhigang Lan
- Department of Neurosurgery, West China Hospital, Sichuan University, Sichuan, China
| | - Xuesong Liu
- Department of Neurosurgery, West China Hospital, Sichuan University, Sichuan, China
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Ballard-Kordeliski A, Lee RH, O'Shaughnessy EC, Kim PY, Jones S, Mackman N, Flick MJ, Paul DS, Adalsteinsson D, Bergmeier W. 4D intravital imaging studies identify platelets as the predominant cellular procoagulant surface in a mouse model of hemostasis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.25.554449. [PMID: 37662350 PMCID: PMC10473702 DOI: 10.1101/2023.08.25.554449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
Interplay between platelets, coagulation/fibrinolytic factors, and endothelial cells (ECs) is necessary for effective hemostatic plug formation. This study describes a novel four-dimensional (4D) imaging platform to visualize and quantify hemostatic plug components with high spatiotemporal resolution. Fibrin accumulation following laser-induced endothelial ablation was observed at the EC-platelet plug interface, controlled by the antagonistic balance between fibrin generation and breakdown. Phosphatidylserine (PS) was first detected in close physical proximity to the fibrin ring, followed by exposure across the endothelium. Impaired PS exposure in cyclophilinD -/- mice resulted in a significant reduction in fibrin accumulation. Adoptive transfer and inhibitor studies demonstrated a key role for platelets, but not ECs, in fibrin generation during hemostatic plug formation. Inhibition of fibrinolysis with tranexamic acid (TXA) led to increased fibrin accumulation in WT mice, but not in cyclophilinD -/- mice or WT mice treated with antiplatelet drugs. These studies implicate platelets as the functionally dominant procoagulant surface during hemostatic plug formation. In addition, they suggest that impaired fibrin formation due to reduced platelet procoagulant activity is not reversed by TXA treatment.
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22
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Metcalf RA, Cohn CS, Bakhtary S, Gniadek T, Gupta G, Harm S, Haspel RL, Hess AS, Jacobson J, Lokhandwala PM, Murphy C, Poston JN, Prochaska MT, Raval JS, Saifee NH, Salazar E, Shan H, Zantek ND, Pagano MB. Current advances in 2022: A critical review of selected topics by the Association for the Advancement of Blood and Biotherapies (AABB) Clinical Transfusion Medicine Committee. Transfusion 2023; 63:1590-1600. [PMID: 37403547 DOI: 10.1111/trf.17475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 05/16/2023] [Indexed: 07/06/2023]
Abstract
BACKGROUND The Association for the Advancement of Blood and Biotherapies Clinical Transfusion Medicine Committee (CTMC) composes a summary of new and important advances in transfusion medicine (TM) on an annual basis. Since 2018, this has been assembled into a manuscript and published in Transfusion. STUDY DESIGN AND METHODS CTMC members selected original manuscripts relevant to TM that were published electronically and/or in print during calendar year 2022. Papers were selected based on perceived importance and/or originality. References for selected papers were made available to CTMC members to provide feedback. Members were also encouraged to identify papers that may have been omitted initially. They then worked in groups of two to three to write a summary for each new publication within their broader topic. Each topic summary was then reviewed and edited by two separate committee members. The final manuscript was assembled by the first and senior authors. While this review is extensive, it is not a systematic review and some publications considered important by readers may have been excluded. RESULTS For calendar year 2022, summaries of key publications were assembled for the following broader topics within TM: blood component therapy; infectious diseases, blood donor testing, and collections; patient blood management; immunohematology and genomics; hemostasis; hemoglobinopathies; apheresis and cell therapy; pediatrics; and health care disparities, diversity, equity, and inclusion. DISCUSSION This Committee Report reviews and summarizes important publications and advances in TM published during calendar year 2022, and maybe a useful educational tool.
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Affiliation(s)
- Ryan A Metcalf
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Claudia S Cohn
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Sara Bakhtary
- Department of Laboratory Medicine, University of California San Francisco, San Francisco, California, USA
| | | | - Gaurav Gupta
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Sarah Harm
- Department of Pathology and Laboratory Medicine, University of Vermont, Burlington, Vermont, USA
| | - Richard L Haspel
- Department of Pathology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Aaron S Hess
- Departments of Anesthesiology and Pathology & Laboratory Medicine, University of Wisconsin, Madison, Wisconsin, USA
| | - Jessica Jacobson
- Department of Pathology, NYU Grossman School of Medicine, New York, New York, USA
| | - Parvez M Lokhandwala
- Department of Pathology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Colin Murphy
- TriCore Reference Laboratories, Albuquerque, New Mexico, USA
| | - Jacqueline N Poston
- Department of Pathology and Laboratory Medicine, University of Vermont, Burlington, Vermont, USA
- Department of Medicine, University of Vermont, Burlington, Vermont, USA
| | - Micah T Prochaska
- Department of Medicine, University of Chicago, Chicago, Illinois, USA
| | - Jay S Raval
- Department of Pathology, University of New Mexico, Albuquerque, New Mexico, USA
| | | | - Eric Salazar
- Department of Pathology, UT Health San Antonio, San Antonio, Texas, USA
| | - Hua Shan
- Department of Pathology, Stanford University, Palo Alto, California, USA
| | - Nicole D Zantek
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Monica B Pagano
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, USA
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23
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Tang X, Li K, Zheng F, He Y, Yang Y, Wang D. The effect of perioperative tranexamic acid (TXA) in patients with calcaneal fractures: a meta-analysis and systematic review of randomized controlled trials. J Orthop Surg Res 2023; 18:495. [PMID: 37438798 DOI: 10.1186/s13018-023-03924-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 06/11/2023] [Indexed: 07/14/2023] Open
Abstract
BACKGROUND Calcaneal fractures are a common orthopedic disease, account for approximately 2% of all bone fractures, and represent 60% of fractures of tarsal bones. Tranexamic acid (TXA) is a synthetic antifibrinolytic drug that competitively blocks the lysine-binding sites of plasminogen, plasmin, and tissue plasminogen activator, delaying fibrinolysis and blood clot degradation. However, the effect of TXA on patients with calcaneal surgery remains controversial. Our objective was to evaluate the effectiveness of TXA in calcaneal fractures surgeries. METHODS The electronic literature databases of Pubmed, Embase, and Cochrane library were searched in December 2022. The data on blood loss, the stay in the hospital, the duration of surgery, hemoglobin, hematocrit, platelet count, prothrombin time, activated partial thromboplastin time, and wound complication were extracted. The Stata 22.0 software was used for the meta-analysis. RESULTS Four randomized controlled studies met our inclusion criteria. This meta-analysis showed that TXA significantly reduced postoperative blood loss during the first 24 h (p < 0.001), improved the level of hemoglobin (p < 0.001) and hematocrit (p = 0.03), and reduced the risk of wound complications (p = 0.04). There was no significant difference between the two groups regarding total and intraoperative blood loss, hospital stay, duration of surgery, platelet count, activated partial thromboplastin time, and prothrombin time. CONCLUSION TXA significantly reduced blood loss during the first 24 h postoperatively, improved the level of hemoglobin and hematocrit, and reduced the risk of wound complications. Given the evidence, TXA can be used in patients with calcaneal fractures and had the potential benefit of blood reduction. PROTOCOL REGISTRATION The protocol was registered in PROSPERO (registration No. CRD42023391211).
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Affiliation(s)
- Xiumei Tang
- Department of Respiratory and Critical Care Medicine, Med-X Center for Manufacturing, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
- Health Management Center, General Practice Medical Center, West China Hospital, Sichuan University/Institute of Hospital Management, West China Hospital, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Kai Li
- Department of Respiratory and Critical Care Medicine, Med-X Center for Manufacturing, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
- Department of Pulmonary and Critical Care Medicine, Chengdu Third People's Hospital, Southwest Jiaotong University, Chengdu, 610031, Sichuan, People's Republic of China
- Department of Respiratory Medicine, The People's Hospital of Pujiang County, Chengdu, 611630, Sichuan, People's Republic of China
| | - Fuyuan Zheng
- Department of Undergraduate Students, West China School of Medicine, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
| | - Yue He
- Department of Orthopaedics, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Yang Yang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, People's Republic of China.
| | - Duan Wang
- Department of Orthopedics, West China Hospital/West China School of Medicine, Sichuan University, Chengdu, 610041, People's Republic of China.
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24
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Kahn SR, Arnold DM, Casari C, Desch KC, Devreese KMJ, Favaloro EJ, Gaertner F, Gouw SC, Gresele P, Griffioen AW, Heger L, Kini RM, Kohli S, Leader A, Lisman T, Lordkipanidzé M, Mullins E, Okoye HC, Rosovsky RP, Salles-Crawley II, Selby R, Sholzberg M, Stegner D, Violi F, Weyand AC, Williams S, Zheng Z. Illustrated State-of-the-Art Capsules of the ISTH 2023 Congress. Res Pract Thromb Haemost 2023; 7:100193. [PMID: 37538494 PMCID: PMC10394567 DOI: 10.1016/j.rpth.2023.100193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023] Open
Abstract
This year's Congress of the International Society of Thrombosis and Haemostasis (ISTH) took place in person in Montréal, Canada, from June 24-28, 2023. The conference, held annually, highlighted cutting-edge advances in basic, translational, population and clinical sciences relevant to the Society. As for all ISTH congresses, we offered a special, congress-specific scientific theme; this year, the special theme was immunothrombosis. Certainly, over the last few years, COVID-19 infection and its related thrombotic and other complications have renewed interest in the concepts of thromboinflammation and immunothrombosis; namely, the relationship between inflammation, infection and clotting. Other main scientific themes of the Congress included Arterial Thromboembolism, Coagulation and Natural Anticoagulants, Diagnostics and Omics, Fibrinolysis and Proteolysis, Hemophilia and Rare Bleeding Disorders, Hemostatic System in Cancer, Inflammation and Immunity, Pediatrics, Platelet Disorders, von Willebrand Disease and Thrombotic Microangiopathies, Platelets and Megakaryocytes, Vascular Biology, Venous Thromboembolism and Women's Health. Among other sessions, the program included 28 State-of-the-Art (SOA) sessions with a total of 84 talks given by internationally recognized leaders in the field. SOA speakers were invited to prepare brief illustrated reviews of their talks that were peer reviewed and are included in this article. These illustrated capsules highlight the major scientific advances with potential to impact clinical practice. Readers are invited to take advantage of the excellent educational resource provided by these illustrated capsules. They are also encouraged to use the image in social media to draw attention to the high quality and impact of the science presented at the Congress.
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Affiliation(s)
- Susan R Kahn
- Medicine, Sir Mortimer B Davis Jewish General Hospital, McGill University, 3755 Cote Ste Catherine, Montreal, Quebec
| | - Donald M Arnold
- Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - Caterina Casari
- Université Paris-Saclay, INSERM, Hémostase inflammation thrombose HITH U1176, 94276, Le Kremlin-Bicêtre, France
| | - Karl C Desch
- Cell and Molecular Biology Program, University of Michigan, Ann Arbor, USA
| | - Katrien M J Devreese
- Coagulation Laboratory, Department of Laboratory Medicine, Ghent University Hospital, Department of Diagnostic Sciences, Ghent University, Ghent, Belgium
| | - Emmanuel J Favaloro
- Haematology, Sydney Centres for Thrombosis and Haemostasis, Institute of Clinical Pathology and Medical Research (ICPMR), NSW Health Pathology, Westmead Hospital, Westmead, NSW Australia
| | - Florian Gaertner
- Technische Universität München (TUM), Ismaninger Straße 22, München, Bayern 81675, Germany
| | - Samantha C Gouw
- Amsterdam UMC location University of Amsterdam, Department of Pediatric Hematology, Meibergdreef 9, Amsterdam, The Netherlands
| | - Paolo Gresele
- University of Perugia, Department of Medicine and Surgery, Head Section of Internal and Cardiovascular Medicine
| | - Arjan W Griffioen
- Angiogenesis Laboratory, Department of Medical Oncology, Amsterdam UMC, Vrije Universiteit Amsterdam, Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - Lukas Heger
- Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA; Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA 02115, USA; Departement of Cardiology and Angiology, University Hospital Freiburg Bad Krozingen, 79106 Freiburg, Germany
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA 02115, USA
- Departement of Cardiology and Angiology, University Hospital Freiburg Bad Krozingen, 79106 Freiburg, Germany
| | | | - Shrey Kohli
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, Universitätsklinikum Leipzig, Leipzig University, 04103 Leipzig, Germany
| | - Avi Leader
- Institute of Hematology, Davidoff Cancer Center, Rabin Medical Center, Petah Tikva, Israel and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ton Lisman
- Surgical Research Laboratory and Section of Hepatobiliary Surgery and Liver Transplantation, Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | | | - Eric Mullins
- Division of Hematology, Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- University of Cincinnati - College of Medicine, Cincinnati, OH, USA
| | - Helen Chioma Okoye
- College of Medicine, University of Nigeria, Ituku Ozalla campus, Enugu Nigeria
| | | | | | - Rita Selby
- Departments of Laboratory Medicine & Pathobiology and Department of Medicine, University of Toronto
| | | | | | - Francesco Violi
- Department of Clinical, Internal Medicine, Anesthesiological and Cardiovascular Sciences, Sapienza University of Rome, Rome, Italy
| | - Angela C Weyand
- Department of Pediatrics, University of Michigan Medical School
| | | | - Ze Zheng
- Medical College of Wisconsin, Milwaukee, Wisconsin 53226, USA
- Versiti Blood Research Institute, Milwaukee, Wisconsin 53226, USA
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25
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Choi H, Kim DW, Jung E, Kye YC, Lee J, Jo S, Kang M, Kim D, Kim B. Impact of intravesical administration of tranexamic acid on gross hematuria in the emergency department: A before-and-after study. Am J Emerg Med 2023; 68:68-72. [PMID: 36948083 DOI: 10.1016/j.ajem.2023.03.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 03/07/2023] [Accepted: 03/09/2023] [Indexed: 03/18/2023] Open
Abstract
INTRODUCTION Local applications of tranexamic acid (TXA) have been effective in treating various hemorrhagic conditions. In patients with gross hematuria, the main treatment in the emergency department (ED) is continuous bladder irrigation (CBI). However, CBI has no pharmacological effects except blood clot removal from dilution. The aim of this study was to evaluate the impact of the intravesical TXA injection before CBI. METHODS This study was a before-and-after, retrospective, and single-center study. The target population was hematuria patients who received CBI via a 3-way Foley catheter. As the intervention procedure, 1000 mg of TXA was injected through the Foley catheter and after 15 min, the Foley catheter was declamped and CBI started. Since the intervention started in March 2022, the patients from March 2022 to August 2022 were assigned to the after group and the patients from March 2021 to August 2021 were assigned to the before group. The primary outcomes were the length of stay in the ED and duration of Foley catheter placement. The secondary outcomes were the admissions and the revisits for CBI within 48 h after discharge. RESULTS The numbers of patients in the before group and after group were 73 and 86, respectively. The median length of stay in the ED was shorter in the intervention group than in the group not treated with TXA (274 min vs. 411 mins, P < 0.001). The median duration of Foley catheter placement was also shorter in the intervention group than not treated with TXA (145 min vs. 308 mins, P < 0.001). The revisits after ED discharge were lower in the after group than in the before group (2.3% vs. 12.3%, P = 0.031). There was a trend for lower admissions in the TXA treatment group than before group (29.1% vs. 45.2%, P = 0.052). CONCLUSION After the TXA intervention, reduction in the length of stay in the ED, the duration of Foley catheter placement, and the revisits after ED discharge was observed.
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Affiliation(s)
- Hyunwoo Choi
- Emergency Department, Korea Veterans Health Service Medical Center in Seoul, 53, Jinhwangdo-ro 61-gil, Gangdong-gu, Seoul, Republic of Korea
| | - Dong Wook Kim
- Emergency Department, Korea Veterans Health Service Medical Center in Seoul, 53, Jinhwangdo-ro 61-gil, Gangdong-gu, Seoul, Republic of Korea
| | - Euigi Jung
- Emergency Department, Korea Veterans Health Service Medical Center in Seoul, 53, Jinhwangdo-ro 61-gil, Gangdong-gu, Seoul, Republic of Korea
| | - Yu Chan Kye
- Emergency Department, Korea Veterans Health Service Medical Center in Seoul, 53, Jinhwangdo-ro 61-gil, Gangdong-gu, Seoul, Republic of Korea
| | - Jungyoup Lee
- Emergency Department, Korea Veterans Health Service Medical Center in Seoul, 53, Jinhwangdo-ro 61-gil, Gangdong-gu, Seoul, Republic of Korea
| | - Sion Jo
- Emergency Department, Korea Veterans Health Service Medical Center in Seoul, 53, Jinhwangdo-ro 61-gil, Gangdong-gu, Seoul, Republic of Korea
| | - Minwoo Kang
- Emergency Department, Korea Veterans Health Service Medical Center in Seoul, 53, Jinhwangdo-ro 61-gil, Gangdong-gu, Seoul, Republic of Korea
| | - Dongsung Kim
- Emergency Department, Korea Veterans Health Service Medical Center in Seoul, 53, Jinhwangdo-ro 61-gil, Gangdong-gu, Seoul, Republic of Korea
| | - Byunghyun Kim
- Emergency Department, Korea Veterans Health Service Medical Center in Seoul, 53, Jinhwangdo-ro 61-gil, Gangdong-gu, Seoul, Republic of Korea.
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26
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Eltringham-Smith LJ, Meixner SC, Pryzdial ELG, Sheffield WP. Correction of haemorrhagic shock-associated coagulopathy and impaired haemostasis by plasma, prothrombin complex concentrates or an activated protein C-targeted DNA aptamer in mice. Sci Rep 2023; 13:3811. [PMID: 36882463 PMCID: PMC9992365 DOI: 10.1038/s41598-023-30794-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 03/01/2023] [Indexed: 03/09/2023] Open
Abstract
Even with extensive transfusion support, trauma-induced bleeding often leads to death. Early intervention may improve outcomes, yet which blood products, factor concentrates, or other drugs constitute optimal treatment is unclear. Patients with acute traumatic coagulopathy (ATC), arising from trauma and haemorrhagic shock, have the worst prognosis. Here, multiple interventions were compared in a mouse model of ATC. After the trauma of tissue excision, anaesthetized mice were bled to 35 mm Hg mean arterial pressure, maintained under shock for 60 min, and resuscitated with fluids equal in volume to the shed blood. Resuscitated mice were subjected to liver laceration to test haemostasis and blood loss was quantified. Saline-treated mice lost two- to three-fold more blood than sham-treated animals and were coagulopathic by prothrombin time elevation post- versus pre-procedure. Murine fresh-frozen plasma (mFFP), anti-activated protein C aptamer HS02-52G, or prothrombin complex concentrates eliminated the bleeding diathesis and coagulopathy; fibrinogen, plasminogen activator inhibitor-1, or tranexamic acid ameliorated bleeding or coagulopathy, but not both. HS02-52G and mFFP also eliminated the changes in plasma aPC and tissue plasminogen activator levels observed in saline-treated mice, as judged via microtiter plate biomarker assays. Procoagulant interventions, especially inhibiting aPC, could be beneficial in human ATC.
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Affiliation(s)
| | - Scott C Meixner
- Medical Affairs and Innovation, Canadian Blood Services, Vancouver, BC, Canada
- Centre for Blood Research, University of British Columbia, Vancouver, BC, Canada
| | - Edward L G Pryzdial
- Medical Affairs and Innovation, Canadian Blood Services, Vancouver, BC, Canada
- Centre for Blood Research, University of British Columbia, Vancouver, BC, Canada
| | - William P Sheffield
- Medical Affairs and Innovation, Canadian Blood Services, Hamilton, ON, Canada.
- Department of Pathology and Molecular Medicine, McMaster University, HSC 4N66, 1280 Main Street West, Hamilton, ON, L8S 4K1, Canada.
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27
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Lee J, Park S, Le PT, Lee G, Lee HW, Yun G, Jeon J, Park J, Pham DT, Park YS, Lim H, Kim C, Hwang TS, Kim SW, Lim G. Peripheral Microneedle Patch for First-Aid Hemostasis. Adv Healthc Mater 2023; 12:e2201697. [PMID: 36538487 DOI: 10.1002/adhm.202201697] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 11/21/2022] [Indexed: 01/18/2023]
Abstract
Despite the minimized puncture sizes and high efficiency, microneedle (MN) patches have not been used to inject hemostatic drugs into bleeding wounds because they easily destroy capillaries when a tissue is pierced. In this study, a shelf-stable dissolving MN patch is developed to prevent rebleeding during an emergency treatment. A minimally and site-selectively invasive hemostatic drug delivery system is established by using a peripheral MN (p-MN) patch that does not directly intrude the wound site but enables topical drug absorption in the damaged capillaries. The invasiveness of MNs is histologically examined by using a bleeding liver of a Sprague-Dawley (SD) rat as an extreme wound model in vivo. The skin penetration force is quantified to demonstrate that the administration of the p-MN patch is milder than that of the conventional MN patch. Hemostatic performance is systematically studied by analyzing bleeding weight and time and comparing them with that of conventional hemostasis methods. The superior performance of a p-MN for the heparin-pretreated SD rat model is demonstrated by intravenous injection in vivo.
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Affiliation(s)
- Jungho Lee
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Sebin Park
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Phuong Thao Le
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Geunho Lee
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Hyoun Wook Lee
- Department of Pathology, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, 51353, Republic of Korea
| | - Gaeun Yun
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Juhyeong Jeon
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Jeongwoo Park
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea.,Medical Device Innovation Center, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Duy Tho Pham
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea.,Department of Emergency Medicine, College of Medicine, Chungnam National University, Daejeon, 35015, Republic of Korea
| | - Young Sook Park
- Department of Physical Rehabilitation Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, 51353, Republic of Korea
| | - Hoon Lim
- Department of Emergency Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, 14584, Republic of Korea
| | - Chulhong Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea.,School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea.,Medical Device Innovation Center, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea.,Department of Convergence IT Engineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea.,Department of Electrical Engineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - Tae Sik Hwang
- Department of Emergency Medicine, Yonsei University College of Medicine, Yongin Severance Hospital, Yongin, 16995, Republic of Korea
| | - Seung Whan Kim
- Department of Emergency Medicine, College of Medicine, Chungnam National University, Daejeon, 35015, Republic of Korea
| | - Geunbae Lim
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea.,School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea.,Institute for Convergence Research and Education in Advanced Technology, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
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28
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Wang S, Yang J, Lin L. Local Application of Tranexamic Acid in Plastic Surgery Patients: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Aesthetic Plast Surg 2023:10.1007/s00266-023-03281-7. [PMID: 36810834 DOI: 10.1007/s00266-023-03281-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 01/30/2023] [Indexed: 02/23/2023]
Abstract
BACKGROUND According to recent evidence, the use of local tranexamic acid (TXA) during plastic surgery may lessen blood loss. OBJECTIVES To comprehensively assess the use of local TXA during plastic surgery through a systematic review and meta-analysis of randomized controlled trials addressing these issues. METHODS Four electronic databases, including PubMed, Web of Science, Embase and the Cochrane Library, were searched until December 12, 2022. Following meta-analyses, the mean difference (MD) or standardized mean difference (SMD) for blood loss volume (BLV), ΔHct, ΔHb and operation time were calculated when appropriate. RESULTS Eleven randomized controlled trials were included in the qualitative synthesis, while 8 studies were included in the meta-analysis. Compared with the control group, the local TXA group showed a reduction in blood loss volume of -1.05 (p < 0.00001; 95% CI, -1.72 to -0.38). However, local TXA had a limited effect on reducing ΔHct, ΔHb and operation time. A meta-analysis was not performed because of heterogeneity in other outcomes; however, except for 1 study in which no significant difference was observed on POD 1, all studies showed significantly lower rates of postoperative ecchymosis after surgery, 2 studies showed statistically significant reductions in transfusion risk or volume, and 3 studies reported significantly better surgical field quality in operations with local TXA. In the 2 included studies, the researchers concluded that local treatment does not play a role in relieving postoperative pain. CONCLUSIONS Local TXA is associated with less blood loss, less ecchymosis and better surgical field in plastic surgery patients. LEVEL OF EVIDENCE I This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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Affiliation(s)
- Senmao Wang
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. Bada Road, Shijingshan District, Beijing, 100144, China
| | - Jingwen Yang
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. Bada Road, Shijingshan District, Beijing, 100144, China
| | - Lin Lin
- Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. Bada Road, Shijingshan District, Beijing, 100144, China.
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29
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Risman RA, Kirby NC, Bannish BE, Hudson NE, Tutwiler V. Fibrinolysis: an illustrated review. Res Pract Thromb Haemost 2023; 7:100081. [PMID: 36942151 PMCID: PMC10024051 DOI: 10.1016/j.rpth.2023.100081] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 01/16/2023] [Accepted: 01/25/2023] [Indexed: 02/18/2023] Open
Abstract
In response to vessel injury (or other pathological conditions), the hemostatic process is activated, resulting in a fibrous, cellular-rich structure commonly referred to as a blood clot. Succeeding the clot's function in wound healing, it must be resolved. This illustrated review focuses on fibrinolysis-the degradation of blood clots or thrombi. Fibrin is the main mechanical and structural component of a blood clot, which encases the cellular components of the clot, including platelets and red blood cells. Fibrinolysis is the proteolytic degradation of the fibrin network that results in the release of the cellular components into the bloodstream. In the case of thrombosis, fibrinolysis is required for restoration of blood flow, which is accomplished clinically through exogenously delivered lytic factors in a process called external lysis. Fibrinolysis is regulated by plasminogen activators (tissue-type and urokinase-type) that convert plasminogen into plasmin to initiate fiber lysis and lytic inhibitors that impede this lysis (plasminogen activator inhibitors, alpha 2-antiplasmin, and thrombin activatable fibrinolysis inhibitor). Furthermore, the network structure has been shown to regulate lysis: thinner fibers and coarser clots lyse faster than thicker fibers and finer clots. Clot contraction, a result of platelets pulling on fibers, results in densely packed red blood cells (polyhedrocytes), reduced permeability to fibrinolytic factors, and increased fiber tension. Extensive research in the field has allowed for critical advancements leading to improved thrombolytic agents. In this review, we summarize the state of the field, highlight gaps in knowledge, and propose future research questions.
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Affiliation(s)
| | - Nicholas C Kirby
- Department of Chemistry, East Carolina University, Greenville, North Carolina, USA
| | | | - Nathan E Hudson
- Department of Physics, East Carolina University Greenville, North Carolina, USA
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Zheng C, Ma J, Xu J, Wu L, Wu Y, Liu Y, Shen B. The optimal regimen, efficacy and safety of tranexamic acid and aminocaproic acid to reduce bleeding for patients after total hip arthroplasty: A systematic review and Bayesian network meta-analysis. Thromb Res 2023; 221:120-129. [PMID: 36527742 DOI: 10.1016/j.thromres.2022.11.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 11/06/2022] [Accepted: 11/11/2022] [Indexed: 12/12/2022]
Abstract
OBJECTIVES We aimed to evaluate the optimal regimen, efficacy and safety of tranexamic acid (TXA) and aminocaproic acid (EACA) for patients after total hip arthroplasty (THA). METHODS The network meta-analysis was guided by the Preferred Reporting Items for Systematic Reviews and Meta-analysis (PRISMA) guideline. The outcomes were total blood loss, transfusion rates, hemoglobin (HB) drop, and risk for pulmonary embolism (PE) or deep vein thrombosis (DVT). Subgroup analyses were performed among most effective regimens to determine the influences of timing and number of doses. RESULTS A total of 56 eligible RCTs with different regimens were assessed. For reducing total blood loss, all high doses of TXA and EACA except high dose of intra-articular (IA) TXA, as well as medium dose of combination of intravenous and intra-articular (combined IV/IA) TXA were most effective. All high doses of TXA, as well as medium dose of combined IV/IA TXA did not show inferiority in reducing transfusion rates and HB drop compared with other regimens. No regimens showed higher risk for PE or DVT compared with placebo, and no statistical differences were seen among most effective regimens in subgroup analyses. CONCLUSIONS As effective as high doses of EACA and TXA, medium dose (20-40 mg/kg or 1.5-3.0 g) of combined IV/IA TXA was enough to control bleeding for patients after THA without increasing risk for PE/DVT. TXA was at least 5 times more potent than EACA. Timing and number of doses had few influences on blood conserving efficacy. LEVEL OF EVIDENCE Level I.
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Affiliation(s)
- Che Zheng
- Department of Orthopaedics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Jun Ma
- Department of Orthopaedics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Jiawen Xu
- Department of Orthopaedics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Liming Wu
- Department of Orthopaedics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Yuangang Wu
- Department of Orthopaedics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Yuan Liu
- Department of Orthopaedics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Bin Shen
- Department of Orthopaedics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China.
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Shah A, Kerner V, Stanworth SJ, Agarwal S. Major haemorrhage: past, present and future. Anaesthesia 2023; 78:93-104. [PMID: 36089857 PMCID: PMC10087440 DOI: 10.1111/anae.15866] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/29/2022] [Indexed: 12/15/2022]
Abstract
Major haemorrhage is a leading cause of morbidity and mortality worldwide. Successful treatment requires early recognition, planned responses, readily available resources (such as blood products) and rapid access to surgery or interventional radiology. Major haemorrhage is often accompanied by volume loss, haemodilution, acidaemia, hypothermia and coagulopathy (factor consumption and fibrinolysis). Management of major haemorrhage over the past decade has evolved to now deliver a 'package' of haemostatic resuscitation including: surgical or radiological control of bleeding; regular monitoring of haemostasis; advanced critical care support; and avoidance of the lethal triad of hypothermia, acidaemia and coagulopathy. Recent trial data advocate for a more personalised approach depending on the clinical scenario. Fresh frozen plasma should be given as early as possible in major trauma in a 1:1 ratio with red blood cells until the results of coagulation tests are available. Tranexamic acid is a cheap, life-saving drug and is advocated in major trauma, postpartum haemorrhage and surgery, but not in patients with gastrointestinal bleeding. Fibrinogen levels should be maintained > 2 g.l-1 in postpartum haemorrhage and > 1.5 g.l-1 in other haemorrhage. Improving outcomes after major traumatic haemorrhage is now driving research to include extending blood-product resuscitation into prehospital care.
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Affiliation(s)
- A. Shah
- Nuffield Department of Clinical NeurosciencesUniversity of OxfordUK
| | - V. Kerner
- Nuffield Department of AnaesthesiaOxford University Hospitals NHS Foundation TrustOxfordUK
| | | | - S. Agarwal
- Department of AnaesthesiaManchester University NHS Foundation TrustManchesterUK
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Kroll CJ, Kroll MH. Thrombosis in hereditary hemorrhagic telangiectasia. JOURNAL OF THROMBOSIS AND HAEMOSTASIS : JTH 2023; 21:18-20. [PMID: 36695382 DOI: 10.1016/j.jtha.2022.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 11/02/2022] [Indexed: 01/11/2023]
Affiliation(s)
- Caleb J Kroll
- Section of Benign Hematology, Division of Internal Medicine, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Michael H Kroll
- Section of Benign Hematology, Division of Internal Medicine, University of Texas MD Anderson Cancer Center, Houston, Texas, USA.
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Chornenki NLJ, Ocran E, James PD. Special considerations in GI bleeding in VWD patients. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2022; 2022:624-630. [PMID: 36485078 PMCID: PMC9820382 DOI: 10.1182/hematology.2022000390] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Gastrointestinal (GI) bleeding is an important cause of morbidity and mortality in von Willebrand disease (VWD). It has been noted that GI bleeding caused by angiodysplasia is overrepresented in VWD patients compared to other causes. The bleeding from angiodysplasia is notoriously difficult to treat; recurrences and rebleeds are common. A growing body of basic science evidence demonstrates that von Willebrand factor negatively regulates angiogenesis through multiple pathways. VWD is clinically highly associated with angiodysplasia. The predisposition to angiodysplasia likely accounts for many of the clinical difficulties related to managing GI bleeding in VWD patients. Diagnosis and treatment are challenging with the current tools available, and much further research is needed to further optimize care for these patients with regard to acute treatment, prophylaxis, and adjunctive therapies. In this review we provide an overview of the available literature on GI bleeding in VWD and explore the molecular underpinnings of angiodysplasia-related GI bleeding. Considerations for diagnostic effectiveness are discussed, as well as the natural history and recurrence of these lesions and which therapeutic options are available for acute and prophylactic management.
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Affiliation(s)
| | - Edwin Ocran
- Department of Medicine, Queen's University, Kingston, Canada
| | - Paula D James
- Department of Medicine, Queen's University, Kingston, Canada
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Bouthors AS, Gilliot S, Sentilhes L, Hennart B, Jeanpierre E, Deneux-Tharaux C, Lebuffe G, Odou P. The role of tranexamic acid in the management of postpartum haemorrhage. Best Pract Res Clin Anaesthesiol 2022; 36:411-426. [PMID: 36513435 DOI: 10.1016/j.bpa.2022.08.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/22/2022] [Accepted: 08/25/2022] [Indexed: 12/15/2022]
Abstract
In the last decades, tranexamic acid (TXA) has emerged as an essential tool in blood loss management in obstetrics. TXA prophylaxis for postpartum haemorrhage (PPH) has been studied in double-blind, placebo-controlled, randomized clinical trials (RCTs). Given the small observed preventive effect, the systematic use of TXA for vaginal and/or caesarean deliveries remains controversial. The result of a pharmacokinetic modelling suggests that relative to intravenous administration, intramuscular administration may be an equally effective alternative route for preventing PPH and may enable access to this drug in low-resource countries. Prophylaxis is currently studied in high-risk populations, such as women with prepartum anaemia or placenta previa. TXA effectively reduces blood loss and PPH-related morbidity and mortality during active PPH, as demonstrated by high-grade evidence from large RCTs. The drug has a good safety profile: in most cases, only mild gastrointestinal or visual adverse events may be observed. TXA use does not increase the risk of serious adverse events, such as venous or arterial thromboembolism, seizures, or acute kidney injury. The TRACES in vivo analysis of biomarkers of TXA's antifibrinolytic effect have suggested that a dose of at least 1 g is required for the treatment of PPH. The TRACES pharmacokinetic model suggests that because TXA can be lost in the haemorrhaged blood, a second dose should be administered if the PPH continues or if severe coagulopathy occurs. Future pharmacodynamic analyses will focus on the appropriateness of TXA dosing regimens with regard to the intensity of fibrinolysis in catastrophic obstetric events.
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Affiliation(s)
- Anne-Sophie Bouthors
- Anaesthesia Intensive Care Unit, Jeanne de Flandre Women's Hospital, Lille University Medical Centre, F-59037, Lille, France; Univ. Lille, ULR 7365 - GRITA - Groupe de Recherche sur les formes Injectables et les Technologies Associées, F-59000, Lille, France.
| | - Sixtine Gilliot
- Univ. Lille, ULR 7365 - GRITA - Groupe de Recherche sur les formes Injectables et les Technologies Associées, F-59000, Lille, France; Central Pharmacy, Lille University Medical Centre, F-59037, Lille, France.
| | - Loïc Sentilhes
- Department of Obstetrics and Gynaecology, Bordeaux University Hospital, F-33076 Bordeaux, France
| | - Benjamin Hennart
- Toxicology Unit, Biology and Pathology Centre, Lille University Medical Centre, F-59037, Lille, France
| | - Emmanuelle Jeanpierre
- Haemostasis Unit, Biology and Pathology Centre, Lille University Medical Centre, F-59037, Lille, France
| | - Catherine Deneux-Tharaux
- Université Paris Cité, CRESS UMR 1153, Obstetrical Perinatal and Paediatric Epidemiology Research Team, EPOPé, INSERM, F75014 Paris, France
| | - Gilles Lebuffe
- Univ. Lille, ULR 7365 - GRITA - Groupe de Recherche sur les formes Injectables et les Technologies Associées, F-59000, Lille, France; Anaesthesia and Intensive Care Unit, Lille University Medical Centre, F-59037 Lille, France
| | - Pascal Odou
- Univ. Lille, ULR 7365 - GRITA - Groupe de Recherche sur les formes Injectables et les Technologies Associées, F-59000, Lille, France; Central Pharmacy, Lille University Medical Centre, F-59037, Lille, France
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Antifibrinolytics in the treatment of traumatic brain injury. Curr Opin Anaesthesiol 2022; 35:583-592. [PMID: 35900731 PMCID: PMC9594127 DOI: 10.1097/aco.0000000000001171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
PURPOSE OF REVIEW Traumatic brain injury (TBI) is a leading cause of trauma-related deaths, and pharmacologic interventions to limit intracranial bleeding should improve outcomes. Tranexamic acid reduces mortality in injured patients with major systemic bleeding, but the effects of antifibrinolytic drugs on outcomes after TBI are less clear. We therefore summarize recent evidence to guide clinicians on when (not) to use antifibrinolytic drugs in TBI patients. RECENT FINDINGS Tranexamic acid is the only antifibrinolytic drug that has been studied in patients with TBI. Several recent studies failed to conclusively demonstrate a benefit on survival or neurologic outcome. A large trial with more than 12 000 patients found no significant effect of tranexamic acid on head-injury related death, all-cause mortality or disability across the overall study population, but observed benefit in patients with mild to moderate TBI. Observational evidence signals potential harm in patients with isolated severe TBI. SUMMARY Given that the effect of tranexamic acid likely depends on a variety of factors, it is unlikely that a 'one size fits all' approach of administering antifibrinolytics to all patients will be helpful. Tranexamic acid should be strongly considered in patients with mild to moderate TBI and should be avoided in isolated severe TBI.
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Tranexamic acid as a stopgap for low platelets? Blood 2022; 140:1185-1186. [PMID: 36107459 DOI: 10.1182/blood.2022017207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 05/31/2022] [Indexed: 11/20/2022] Open
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Patel PA, Wyrobek JA, Butwick AJ, Pivalizza EG, Hare GMT, Mazer CD, Goobie SM. Update on Applications and Limitations of Perioperative Tranexamic Acid. Anesth Analg 2022; 135:460-473. [PMID: 35977357 DOI: 10.1213/ane.0000000000006039] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Tranexamic acid (TXA) is a potent antifibrinolytic with documented efficacy in reducing blood loss and allogeneic red blood cell transfusion in several clinical settings. With a growing emphasis on patient blood management, TXA has become an integral aspect of perioperative blood conservation strategies. While clinical applications of TXA in the perioperative period are expanding, routine use in select clinical scenarios should be supported by evidence for efficacy. Furthermore, questions regarding optimal dosing without increased risk of adverse events such as thrombosis or seizures should be answered. Therefore, ongoing investigations into TXA utilization in cardiac surgery, obstetrics, acute trauma, orthopedic surgery, neurosurgery, pediatric surgery, and other perioperative settings continue. The aim of this review is to provide an update on the current applications and limitations of TXA use in the perioperative period.
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Affiliation(s)
- Prakash A Patel
- From the Department of Anesthesiology, Yale University School of Medicine, New Haven, Connecticut
| | - Julie A Wyrobek
- Department of Anesthesiology and Perioperative Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York
| | - Alexander J Butwick
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, California
| | - Evan G Pivalizza
- Department of Anesthesiology, McGovern Medical School, University of Texas Health Science Center, Houston, Texas
| | - Gregory M T Hare
- Department of Anesthesia, St. Michael's Hospital, University of Toronto, Toronto, Ontario, Canada
| | - C David Mazer
- Department of Anesthesia, St. Michael's Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Susan M Goobie
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
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Lee SG, Fralick J, Wallis CJD, Boctor M, Sholzberg M, Fralick M. Systematic review of hematuria and acute renal failure with tranexamic acid. Eur J Haematol 2022; 108:510-517. [PMID: 35266205 DOI: 10.1111/ejh.13762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 02/28/2022] [Accepted: 03/02/2022] [Indexed: 11/03/2022]
Abstract
OBJECTIVES To conduct a systematic review of tranexamic acid (TXA) and the risk of renal failure from urinary clots in adult patients with hematuria. METHODS A systematic review of Medline, Embase, CENTRAL, www. CLINICALTRIALS gov, and Google Scholar were searched. Randomized control trials (RCTs) and observational studies that assessed the risk of renal failure with use of TXA among adults with hematuria were included. The primary outcome was renal failure due to urinary tract clots with TXA compared to no TXA (or placebo) or comparator. RESULTS We identified three RCTs (N = 466 patients) and three retrospective cohort studies (N=220 patients), and a total of 342 patients that had hematuria and received TXA. The patient population of the six studies included medical and surgical patients, with two of the three RCTs comprised patients undergoing percutaneous nephrolithotomy, and the third RCT comprised patients undergoing transurethral resection of the prostate. Documentation of renal function before and after TXA administration was documented in only two studies (N = 28 patients), and neither identified worsening renal function in those exposed to TXA. CONCLUSIONS There are limited studies evaluating the risk of renal failure in patients with hematuria who were exposed to TXA, and the available data does not suggest an increased risk.
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Affiliation(s)
- Stephanie G Lee
- Department of Medicine, St Michael's Hospital, University of Toronto, Toronto, Ontario, Canada
| | - John Fralick
- Department of Medicine, Foothills Medical Centre, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Christopher J D Wallis
- Department of Urology, Vanderbilt University Medical Center, Nashville, Tennessee, USA.,Division of Urology, Department of Surgery, Mount Sinai Hospital and University of Toronto, Toronto, Ontario, Canada
| | - Monica Boctor
- Sinai Health System and the Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Michelle Sholzberg
- Department of Medicine, St Michael's Hospital, University of Toronto, Toronto, Ontario, Canada.,Department of Laboratory Medicine and Pathobiology, St Michael's Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Michael Fralick
- Sinai Health System and the Department of Medicine, University of Toronto, Toronto, Ontario, Canada
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Nersesian S, Sholzberg M, Cushman M, Wolberg AS. The Journey to a Successful Illustrated Review. Res Pract Thromb Haemost 2022; 6:e12721. [PMID: 35599704 PMCID: PMC9115973 DOI: 10.1002/rth2.12721] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/19/2022] [Accepted: 04/22/2022] [Indexed: 12/05/2022] Open
Abstract
Illustrated review articles, rooted in scientific rigor, are made up of “capsules” or panels of visuals that together provide an up‐to‐date overview of a topic. Illustrated reviews aim to provide a more accessible format than traditional written reviews to facilitate more effective knowledge translation and dissemination. However, the novelty of this format can dissuade prospective authors due to uncertainty and lack of comfort. To remedy this uncertainty, we have summarized the journey of developing an illustrated review, from identifying an appropriate topic to submitting the final manuscript for peer review. We highlight the importance of approaching an illustrated review from a storytelling perspective, and encouraging authors to keep their audience in mind when picking a theme or characters. We provide storyboard considerations and simplify graphic design principles to develop an outline and line draft for the illustrated review. We list programs available to authors to demystify creating attractive and engaging scientific visuals. Finally, we provide information on choosing colors or fonts and where to find copyright‐free icons, graphics, illustrations, and pictures. This review provides prospective authors with the knowledge, tools, and resources to create an effective illustrated review article. If there is difficulty with the links embedded within the document please download the full PDF.
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Affiliation(s)
- Sarah Nersesian
- Microbiology and Immunology Dalhousie University Halifax Nova Scotia Canada
| | - Michelle Sholzberg
- St Michael's Hospital, Departments of Medicine and Laboratory Medicine & Pathobiology, Li Ka Shing Knowledge Institute, University of Toronto Toronto Ontario Canada
| | - Mary Cushman
- Department Medicine Robert Larner MD College of Medicine Burlington Vermont USA
| | - Alisa S. Wolberg
- Pathology and Laboratory Medicine and UNC Blood Research Center University of North Carolina at Chapel Hill Chapel Hill North Carolina USA
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Beyer RS, Hatter MJ, Streetman D. Encouragement for Further Study of Tranexamic Acid Administration for Sacroiliac Joint Fusion Surgery. Geriatr Orthop Surg Rehabil 2022; 13:21514593221098606. [PMID: 35557600 PMCID: PMC9087243 DOI: 10.1177/21514593221098606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 04/18/2022] [Accepted: 04/18/2022] [Indexed: 11/20/2022] Open
Abstract
TO THE EDITOR: We read with great interest the article by Huynh et al.regarding the
association between tranexamic acid (TXA) and blood loss in patients undergoing surgical
treatment for hip fracture (Huynh PAN, Miller M, Will R. Intravenous Tranexamic Acid
Decreases Blood Transfusions and Blood Loss for Patients with Surgically Treated Hip
Fractures. Geriatric Orthopedic Surg Rehabil. 2021). The authors illustrated, via
retrospective chart review of 505 patients who were surgically treated for hip fractures,
that patients administered TXA had statistically significant decreases in perioperative
blood loss and reduced relative risk of transfusion. Huynh et al. reported no
statistically significant increases in thromboembolic events in patients given TXA.
Mechanistically, TXA is a synthetic anti-fibrinolytic that competitively inhibits the
plasminogen activation pathway. By preventing activated plasmin from de-stabilizing the
fibrin matrix, TXA promotes clot formation. Given the anti-fibrinolytic effects of TXA,
concerns in the literature exist regarding its use being associated with increased risk
for thromboembolic events. However, it is important to note the complication profile
associated with TXA is minimal, as elucidated by Brown et al., specifically finding that
no patients who were administered TXA perioperatively experienced a thromboembolic event
(or at least, there were no reports of thromboembolism or any other adverse events). While
administration of TXA may theoretically increase the risk for thrombosis, Brown et al.
showed this does not seem to occur in spinal laminectomy and fusion with posterior
instrumentation. Similarly, in a systematic review of the literature describing TXA use in
intracranial tumor resection, this study revealed a statistically significant reduction in
the need for intraoperative blood transfusion in patients administered TXA. Upon
consideration of postoperative outcomes, no significant increase in complication rate was
found. This evidence in the existing literature on TXA use in orthopedic, spinal, and
cranial neurosurgery exemplifies the wide potential of TXA for reducing blood loss with
minimal complications in surgical procedures, especially involving the craniospinal
axis.
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Affiliation(s)
- Ryan S Beyer
- Department of Neurological Surgery, University of California Irvine, Orange, CA, USA
| | - Matthew J Hatter
- Department of Neurological Surgery, University of California Irvine, Orange, CA, USA
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Latest advances in postpartum hemorrhage management. Best Pract Res Clin Anaesthesiol 2022; 36:123-134. [PMID: 35659949 DOI: 10.1016/j.bpa.2022.02.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 02/16/2022] [Indexed: 11/20/2022]
Abstract
Hemorrhage is the leading cause of maternal mortality worldwide. A maternal health priority is improving how healthcare providers prevent and manage postpartum hemorrhage (PPH). Because anesthesiologists can help facilitate how hospitals develop approaches for PPH prevention and anticipatory planning, we review the potential utility of PPH risk-assessment tools, bundles, and protocols. Anesthesiologists rely on clinical and diagnostic information for initiating and evaluating medical management. Therefore, we review modalities for measuring blood loss after delivery, which includes visual, volumetric, gravimetric, and colorimetric approaches. Point-of-care technologies for assessing changes in central hemodynamics (ultrasonography) and coagulation profiles (rotational thromboelastometry and thromboelastography) are also discussed. Anesthesiologists play a critical role in the medical and transfusion management of PPH. Therefore, we review blood ordering and massive transfusion protocols, fixed-ratio vs. goal-directed transfusion approaches, coagulation changes during PPH, and the potential clinical utility of the pharmacological adjuncts, tranexamic acid, and fibrinogen concentrate.
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Skalska-Świstek M, Huras H, Jaworowski AP, Świstek R, Kołak M. COVID-19 Infection Complicated by Disseminated Intravascular Coagulation during Pregnancy—Two Cases Report. Diagnostics (Basel) 2022; 12:diagnostics12030655. [PMID: 35328208 PMCID: PMC8947359 DOI: 10.3390/diagnostics12030655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 02/24/2022] [Accepted: 03/01/2022] [Indexed: 11/25/2022] Open
Abstract
Coagulopathies are one of the obstetric complications affecting the period of pregnancy, childbirth, and puerperium. One of the more severe and complex disorders of the haemostatic system is the disseminated intravascular coagulation syndrome (DIC), in which generalised activation of the coagulation system and activation of inflammatory cells occurs. DIC syndrome was observed in patients whose pregnancy was complicated by SARS-CoV-2 infection. Both the course of these cases and literature review indicate that particular notice should be paid to laboratory parameters of the coagulation system, closely monitoring the well-being of the foetus and, in the situation of acute DIC development, it is advised to deliver a baby and initiate intensive therapy.
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Affiliation(s)
- Małgorzata Skalska-Świstek
- Department of Obstetrics and Perinatology, Medical College, Jagiellonian University, 23 Kopernika Str., 31-501 Krakow, Poland; (H.H.); (A.P.J.); (M.K.)
- Correspondence:
| | - Hubert Huras
- Department of Obstetrics and Perinatology, Medical College, Jagiellonian University, 23 Kopernika Str., 31-501 Krakow, Poland; (H.H.); (A.P.J.); (M.K.)
| | - Andrzej Piotr Jaworowski
- Department of Obstetrics and Perinatology, Medical College, Jagiellonian University, 23 Kopernika Str., 31-501 Krakow, Poland; (H.H.); (A.P.J.); (M.K.)
| | - Rafał Świstek
- Department of Anaesthesiology and Intensive Therapy, University Hospital in Krakow, 2 Jakubowskiego Str., 30-688 Krakow, Poland;
| | - Magdalena Kołak
- Department of Obstetrics and Perinatology, Medical College, Jagiellonian University, 23 Kopernika Str., 31-501 Krakow, Poland; (H.H.); (A.P.J.); (M.K.)
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Postoperative variations in anaemia treatment and transfusions (POSTVenTT): protocol for a prospective multicentre observational cohort study of anaemia after major abdominal surgery. Colorectal Dis 2022; 24:228-234. [PMID: 34490725 DOI: 10.1111/codi.15902] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 08/27/2021] [Accepted: 09/01/2021] [Indexed: 01/11/2023]
Abstract
AIM Perioperative anaemia is common and is associated with increased postoperative complications, delayed recovery and increased morbidity and mortality. However, current management of anaemia after surgery is variable. This student- and trainee-led collaborative study aims to audit the postoperative variations in anaemia treatment and transfusions (POSTVenTT) and quantify its impact on patient outcomes after major abdominal surgery. METHOD This is the first Australian and Aotearoa New Zealand multicentre study in surgical patients conducted by networks of trainees, students and consultants. Data will be prospectively collected on consecutive adult patients undergoing elective and emergency major abdominal surgery with follow-up to 30 days after hospital discharge. The primary endpoint will be adherence to anaemia management guidelines. Secondary outcomes will include postoperative anaemia, blood transfusion, postoperative complications as per the Clavien-Dindo classification, length of stay and hospital readmission at 30 days. DISCUSSION This protocol describes the first Australian and Aotearoa New Zealand collaborative study by medical students and surgical trainees. The collaboration will aim to provide a clear understanding of current practices regarding the management and risk factors for anaemia and association with patient outcomes after major abdominal surgery.
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Lee AC, Haché M. Pediatric Anesthesia Management for Post-Tonsillectomy Bleed: Current Status and Future Directions. Int J Gen Med 2022; 15:63-69. [PMID: 35027837 PMCID: PMC8749229 DOI: 10.2147/ijgm.s312866] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 12/20/2021] [Indexed: 11/23/2022] Open
Abstract
After medical stabilization, several techniques are considered for anesthesia in the surgical intervention of post-tonsillectomy bleeding in children. Hypoxia during induction of general anesthesia occurs more frequently than aspiration for this population. While classical (apneic) rapid sequence induction and intubation with cricoid pressure still has a role, controlled rapid sequence induction and intubation that incorporates mask ventilation at low pressure (<12 cm H2O) before direct laryngoscopy under a deep plane of anesthesia is a viable alternative for cases of slow venous bleeding. Supplemental oxygen delivery during laryngoscopy to permit apneic oxygenation is a future trend in management. While the routine administration of tranexamic acid during tonsillectomy has not been shown to be of benefit, it may have a role in post-tonsillectomy hemorrhage with further study.
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Affiliation(s)
- Angela C Lee
- Division of Anesthesiology, Pain and Perioperative Medicine, Children's National Hospital, George Washington University School of Medicine and Health Sciences, Washington, DC, USA
| | - Manon Haché
- Division of Pediatric Anesthesia, Department of Anesthesiology, Columbia University Irving Medical Center, New York, NY, USA
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Fibrinolysis and Trauma Outcomes. Anesthesiology 2022; 136:7-9. [PMID: 34874993 DOI: 10.1097/aln.0000000000004020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Supplemental Digital Content is available in the text.
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