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Puchstein D, Kork F, Schöchl H, Rayatdoost F, Grottke O. 3-Factor versus 4-Factor Prothrombin Complex Concentrates for the Reversal of Vitamin K Antagonist-Associated Coagulopathy: A Systematic Review and Meta-analysis. Thromb Haemost 2023; 123:40-53. [PMID: 36626899 PMCID: PMC9928532 DOI: 10.1055/s-0042-1758653] [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: 01/12/2023]
Abstract
Long-term anticoagulation is used worldwide to prevent or treat thrombotic events. Anticoagulant therapy using vitamin K antagonists (VKAs) is well established; however, anticoagulants carry an increased risk of potentially life-threatening bleeding. In cases of bleeding or need for surgery, patients require careful management, balancing the need for rapid anticoagulant reversal with risk of thromboembolic events. Prothrombin complex concentrates (PCCs) replenish clotting factors and reverse VKA-associated coagulopathy. Two forms of PCC, 3-factor (3F-PCC) and 4-factor (4F-PCC), are available. Using PRISMA methodology, we systematically reviewed whether 4F-PCC is superior to 3F-PCC for the reversal of VKA-associated coagulopathy. Of the 392 articles identified, 48 full texts were reviewed, with 11 articles identified using criteria based on the PICOS format. Data were captured from 1,155 patients: 3F-PCC, n = 651; 4F-PCC, n = 504. ROBINS-I was used to assess bias. Nine studies showed international normalized ratio (INR) normalization to a predefined goal, ranging from ≤1.5 to ≤1.3, following PCC treatment. Meta-analysis of the data showed that 4F-PCC was favorable compared with 3F-PCC overall (odds ratio [OR]: 3.50; 95% confidence interval [CI]: 1.88-6.52, p < 0.0001) and for patients with a goal INR of ≤1.5 or ≤1.3 (OR: 3.45; 95% CI: 1.42-8.39, p = 0.006; OR: 3.25; 95% CI: 1.30-8.13, p = 0.01, respectively). However, heterogeneity was substantial (I 2 = 62%, I 2 = 70%, I 2 = 64%). Neither a significant difference in mortality (OR: 0.72; 95% CI: 0.42-1.24, p = 0.23) nor in thromboembolisms was reported. These data suggest that 4F-PCC is better suited than 3F-PCC for the treatment of patients with VKA-associated coagulopathy, but further work is required for a definitive recommendation.
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Affiliation(s)
- Dorothea Puchstein
- Department of Anaesthesiology, RWTH Aachen University Hospital, Aachen, Germany
| | - Felix Kork
- Department of Anaesthesiology, RWTH Aachen University Hospital, Aachen, Germany
| | - Herbert Schöchl
- Department for Anaesthesiology and Intensive Care Medicine, AUVA Trauma Academic Teaching Hospital, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Farahnaz Rayatdoost
- Department of Anaesthesiology, RWTH Aachen University Hospital, Aachen, Germany
| | - Oliver Grottke
- Department of Anaesthesiology, RWTH Aachen University Hospital, Aachen, Germany,Address for correspondence Oliver Grottke, MD, PhD, MScPH Department of Anaesthesiology, RWTH Aachen University HospitalPauwelsstrasse 30, 52074 AachenGermany
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Scheiderer AN, Shachner TR, Rains AW, Heidel RE, Clark CT. Blasting the myth of predictive INR changes related to plasma transfusion: an academic institution's experience. Hematol Transfus Cell Ther 2023; 45:1-6. [PMID: 34052196 PMCID: PMC9938493 DOI: 10.1016/j.htct.2021.01.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 11/30/2020] [Accepted: 01/27/2021] [Indexed: 02/06/2023] Open
Abstract
INTRODUCTION Plasma transfusion is a common therapeutic strategy used to lower international normalized ratio (INR) values in the non-emergent setting. However, due to lack of evidence of its efficacy, standardized guidelines for this practice have not been well established. METHODS This retrospective observational cohort study analyzed 276 inpatient encounters that involved plasma transfusions focusing on change in INR values from pre- to post-transfusion, with respect to the following predictor variables: vitamin K co-administration, number of plasma units transfused, order indication and body mass index (BMI). RESULTS The overall average change in the INR was 1.35. Patients who received vitamin K showed an average change of 2.51, while patients that did not receive vitamin K demonstrated an average change of 0.70. Increased numbers of plasma units transfused showed benefit up to three-unit orders. Greater decreases in the INR were observed for patients requiring plasma for anticoagulation reversal or active bleeding. There was no significant difference in the change in INR based on the BMI. By multivariate and regression analyses, the stepwise addition of each successive predictor variable demonstrated an increase in the shared variance in the outcome of the post-transfusion INR: the pre-transfusion INR and vitamin K co-administration alone was not significant (p = 0.45); the additional number of plasma units transfused was significant (R² = 0.13, p < 0.001), and; the subsequent additional plasma order indications (R² = 0.19, p < 0.001) and BMI (R² = 0.18, p < 0.001) were increasingly significant. CONCLUSION Taking into consideration the combination of multiple predictive factors may aid in a more efficient use of plasma products.
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Affiliation(s)
- Ashley N. Scheiderer
- Corresponding author at: Ashley N. Scheiderer, 1924 Alcoa Hwy, Knoxville, TN 37920, Office phone: (865) 305-8944, Fax number: (865) 305-6866.
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Abstract
PURPOSE OF REVIEW Major bleeding in cardiac surgery is commonly encountered, and, until recently, most frequently managed with fresh frozen plasma (FFP). However, a Cochrane review found this practice to be associated with a significant increase in red blood cell (RBC) transfusions and costs. These findings have led to off-label uses of prothrombin complex concentrates (PCCs) in cardiac surgery. The purpose of this review is to compare and contrast the use of FFP and PCC, review the components, limitations and risks of different types of PCCs, and discuss the latest evidence for the use of PCC versus FFP in cardiac surgery. RECENT FINDINGS A recent review and meta-analysis suggests that PCC administration in cardiac surgery is more effective than FFP in reducing RBC transfusions and costs. SUMMARY The current data supports the use of 4F-PCC instead of FFP as the primary hemostatic agent in cases of major bleeding in cardiac surgery. The use of PCCs is associated with reduced rates of RBC transfusions while maintaining a favorable safety profile. Clear advantages of PCC over FFP include its smaller volume, higher concentration of coagulation factors and shorter acquisition and administration times.
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Affiliation(s)
- Jeans M Santana
- Department of Anesthesiology, Tufts Medical Center, Boston, Massachusetts, USA
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Comparison of 3-factor versus 4-factor prothrombin complex concentrate for emergent warfarin reversal: a systematic review and meta-analysis. BMC Emerg Med 2022; 22:14. [PMID: 35073849 PMCID: PMC8785536 DOI: 10.1186/s12873-022-00568-x] [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: 06/10/2021] [Accepted: 12/31/2021] [Indexed: 11/30/2022] Open
Abstract
Background Patients requiring emergent warfarin reversal (EWR) have been prescribed three-factor prothrombin complex concentrate (PCC3) and four-factor prothrombin complex concentrate (PCC4) to reverse the anticoagulant effects of warfarin. There is no existing systematic review and meta-analysis of studies directly comparing PCC3 and PCC4. Methods The primary objective of this systematic review and meta-analysis was to determine the effectiveness of achieving study defined target INR goal after PCC3 or PCC4 administration. Secondary objectives were to determine the difference in safety endpoints, thromboembolic events (TE), and survival during the patients’ hospital stay. Random-effects meta-analysis models were used to estimate the odds ratios (OR), and heterogeneity associated with the outcomes. The Newcastle-Ottawa Scale was used to assess study quality, and Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were followed. Results Ten full-text manuscripts and five abstracts provided data for the primary and secondary outcomes. Patients requiring EWR had more than three times the odds of reversal to goal INR when they were given PCC4 compared to PCC3 (OR = 3.61, 95% CI: 1.97–6.60, p < 0.001). There was no meaningful clinical association or statistically significant result between PCC4 and PCC3 groups in TE (OR = 1.56, 95% CI: 0.83–2.91, p = 0.17), or survival during hospital stay (OR = 1.34, 95% CI: 0.81–2.23, p = 0.25). Conclusion PCC4 is more effective than PCC3 in meeting specific predefined INR goals and has similar safety profiles in patients requiring emergent reversal of the anticoagulant effects of warfarin. Supplementary Information The online version contains supplementary material available at 10.1186/s12873-022-00568-x.
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Naeem Z, Allan S, Hernandez A, Galanakis DK, Singer AJ. Clinical utilization of four-factor prothrombin complex concentrate: a retrospective single center study. Clin Exp Emerg Med 2021; 8:75-81. [PMID: 34237811 PMCID: PMC8273669 DOI: 10.15441/ceem.20.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 06/16/2020] [Accepted: 06/19/2020] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE Four-factor prothrombin complex concentrate (4F-PCC) was approved by the US Food and Drug Administration in 2013 for management of severely bleeding patients on warfarin therapy. We describe use of 4F-PCC at a large, suburban academic center. METHODS We retrospectively reviewed all patients receiving 4F-PCC from its introduction through 2016 at a large level 1 trauma center. Clinical and demographic data were obtained, including indications for anticoagulation and antiplatelet agents, comorbidities, concomitant medications, etiology and site of bleeding, as well as disposition, length of stay, mortality, and thrombotic events. RESULTS One hundred eighty-four patients received 4F-PCC. Mean age was 72 years; 40.8% were female. Indications for 4F-PCC administration included: active bleeding (74%), reversal prior to a procedure (14%), and elevated international normalized ratio (12%). Warfarin was the most common concomitant medication (71.1%). Most patients were receiving anticoagulation for atrial fibrillation (63%). Concomitant treatments for bleeding included vitamin K (58.2%), packed red blood cells (50%), fresh frozen plasma (38%), and platelets (26.1%), amongst others. Median length of hospital stay was 8.4 days. Nine patients (4.9%) developed thrombosis within 90 days of 4F-PCC. Mortality was 24.5%, with notably higher rates amongst those who received 4F-PCC for off-label indications (19.1% on-label mortality vs. 37.7% off-label mortality on chi-square analysis, P=0.01). CONCLUSION This study demonstrates that 4F-PCC is being utilized for indications other than the reversal of warfarin-induced coagulopathy. Further investigation is warranted to determine the efficacy and safety of 4F-PCC for these potential indications.
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Affiliation(s)
- Zaina Naeem
- Department of Emergency Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA
| | - Salsabeel Allan
- Department of Emergency Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA
| | - Aneury Hernandez
- Department of Emergency Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA
| | - Dennis K Galanakis
- Department of Pathology, Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA
| | - Adam J. Singer
- Department of Emergency Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, NY, USA
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Galhardo C, Yamauchi LHI, Dantas H, Guerra JCDC. Clinical protocols for oral anticoagulant reversal during high risk of bleeding for emergency surgical and nonsurgical settings: a narrative review. Braz J Anesthesiol 2021; 71:429-442. [PMID: 33887335 PMCID: PMC9373671 DOI: 10.1016/j.bjane.2021.03.007] [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: 01/11/2020] [Revised: 02/23/2021] [Accepted: 03/13/2021] [Indexed: 11/29/2022] Open
Abstract
Background and objectives Oral anticoagulants prevent thromboembolic events but expose patients to a significant risk of bleeding due to the treatment itself, after trauma, or during surgery. Any physician working in the emergency department or involved in the perioperative care of a patient should be aware of the best reversal approach according to the type of drug and the patient’s clinical condition. This paper presents a concise review and proposes clinical protocols for the reversal of oral anticoagulants in emergency settings, such as bleeding or surgery. Contents The authors searched for relevant studies in PubMed, LILACS, and the Cochrane Library database and identified 82 articles published up to September 2020 to generate a review and algorithms as clinical protocols for practical use. Hemodynamic status and the implementation of general supportive measures should be the first approach under emergency conditions. The drug type, dose, time of last intake, and laboratory evaluations of anticoagulant activity and renal function provide an estimation of drug clearance and should be taken into consideration. The reversal agents for vitamin K antagonists are 4-factor prothrombin complex concentrate and vitamin K, followed by fresh frozen plasma as a second-line treatment. Direct oral anticoagulants have specific reversal agents, such as andexanet alfa and idarucizumab, but are not widely available. Another possibility in this situation, but with less evidence, is prothrombin complex concentrates. Conclusion The present algorithms propose a tool to help healthcare providers in the best decision making for patients under emergency conditions.
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Affiliation(s)
- Carlos Galhardo
- Hospital São Lucas Copacabana, Departamento de Anestesia, Rio de Janeiro, RJ, Brazil; Instituto Nacional de Cardiologia, Rio de Janeiro, RJ, Brazil.
| | | | - Hugo Dantas
- Clínica de Anestesiologia, Departamento de Anestesia, Salvador, BA, Brazil
| | - João Carlos de Campos Guerra
- Hospital Israelita Albert Einstein, Centro de Oncologia e Hematologia, Setor de Hematologia e Coagulação, Departamento de Patologia Clínica, São Paulo, SP, Brazil
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Koh HP, Jagan N, George D, Mazlan-Kepli W, Mohamed S, Lim HT, Ross NT, Mazlan AM. The outcomes of three-factor prothrombin complex concentrate (3F-PCC) in warfarin anticoagulation reversal: a prospective, single-arm, open-label, multicentre study. J Thromb Thrombolysis 2021; 52:836-847. [PMID: 33748900 DOI: 10.1007/s11239-021-02426-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/05/2021] [Indexed: 11/28/2022]
Abstract
There is a wide variation on the efficacy of three-factor Prothrombin Complex Concentrate (3F-PCC) in warfarin reversal. We aimed to determine the efficacy and safety of 3F-PCC in warfarin reversal. This multicentre prospective study analysed data from adult patients on warfarin who received 3F-PCC (Prothrombinex-VF®) for anticoagulation reversal between June 2019 to October 2020. Purposive sampling was used in this study. Study endpoints included target INR achievement, adverse drug reactions (ADRs), and in-hospital all-cause mortality. Logistic regression analyses were used to assess independent predictors of study endpoints. One-hundred thirty-seven patients with a median age of 68 (59-76) years were recruited, who were predominantly male (59.9%, n = 82). A total of 102 patients required 3F-PCC for life-threatening (40.9%, n = 56) and clinically significant bleeding (33.6%, n = 46). Initial INRs ranged from 1.55 to undetectable high (> 26). All patients had INR reduction, of which 62% (n = 85) achieved target INR, whereas 12.4% (n = 17) achieved INR below the target range. Median INR was reduced from 4.76 (3.14-8.32) to 1.54 (1.27-1.88) post-3F-PCC (p < 0.001). The use of adjunctive reversal agents and initial INR < 3.6 were the significant predictors for target INR achievement. Six (4.4%) ADRs were observed. Two (1.5%) cases with the suspected acute coronary syndrome were associated with mortality. Ischemic stroke occurred in one (0.7%) patient. The incidence of in-hospital all-cause mortality was 21.2% (n = 29). The rate of INR achievement was 62% in our study without apparent increased risk of thromboembolic events and in-hospital all-cause mortality.
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Affiliation(s)
- Hock Peng Koh
- Pharmacy Department, Hospital Kuala Lumpur, Kuala Lumpur, Malaysia.
| | - Nirmala Jagan
- Pharmacy Department, Hospital Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Doris George
- Pharmacy Department, Hospital Raja Permaisuri Bainun, Ipoh, Malaysia
| | | | - Sahimi Mohamed
- Pharmacy Department, Hospital Tengku Ampuan Afzan, Kuantan, Malaysia
| | - Hong Thai Lim
- Pharmacy Department, Hospital Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Noel Thomas Ross
- Medical Department, Hospital Kuala Lumpur, Kuala Lumpur, Malaysia
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Peck KA, Ley EJ, Brown CV, Moore EE, Sava JA, Ciesla DJ, Sperry JL, Rizzo AG, Rosen NG, Brasel KJ, Kozar R, Inaba K, Martin MJ. Early anticoagulant reversal after trauma: A Western Trauma Association critical decisions algorithm. J Trauma Acute Care Surg 2021; 90:331-336. [PMID: 33055578 DOI: 10.1097/ta.0000000000002979] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Kimberly A Peck
- From the Department of Surgery, Scripps Mercy Hospital San Diego (K.A.P., M.J.M.), San Diego; Department of Surgery, Cedars-Sinai Medical Center (E.J.L.), Los Angeles, California; Division of Acute Care Surgery, Dell Medical School (C.V.B.), Austin, Texas; Department of Surgery, Ernest E Moore Shock Trauma Center (E.E.M.), Denver, Colorado; Division of Trauma, MedStar Hospital Center (J.A.S.), Washington, DC; Acute Care Surgery Division, Morsani College of Medicine (D.J.C.), Tampa, Florida; Division of Trauma Surgery, University of Pittsburgh (J.L.S.), Pittsburgh, Pennsylvania; Department of Surgery, Inova Trauma Center (A.G.R.), Falls Church, Virginia; Division of Pediatric General and Thoracic Surgery, Children's Hospital (N.G.R.), Cincinnati, Ohio; Division of Trauma, Critical Care and Acute Care Surgery, Oregon Health Science University (K.J.B.), Portland, Oregon; Department of Surgery, Shock Trauma Center, University of Maryland (R.K.), Baltimore, Maryland; and Division of Trauma, Emergency Surgery and Surgical Critical Care, Keck School of Medicine (K.I.), Los Angeles, California
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Koh HP, Jagan N, Tay SL, Nagarajah J, Ross NT. The outcome of three-factor Prothrombin Complex Concentrate (3F-PCC) in warfarin reversal: A single center retrospective cohort study. THROMBOSIS UPDATE 2020. [DOI: 10.1016/j.tru.2020.100014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Margraf DJ, Seaburg S, Beilman GJ, Wolfson J, Gipson JC, Chapman SA. Propensity score adjusted comparison of three-factor versus four-factor prothrombin complex concentrate for emergent warfarin reversal: a retrospective cohort study. BMC Emerg Med 2020; 20:93. [PMID: 33243152 PMCID: PMC7691107 DOI: 10.1186/s12873-020-00386-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 11/12/2020] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Prothrombin Complex Concentrates (PCC) are prescribed for emergent warfarin reversal (EWR). The comparative effectiveness and safety among PCC products are not fully understood. METHODS Patients in an academic level one trauma center who received PCC3 or PCC4 for EWR were identified. Patient characteristics, PCC dose and time of dose, pre- and post-INR and time of measurement, fresh frozen plasma and vitamin K doses, and patient outcomes were collected. Patients whose pre-PCC International Normalized Ratio (INR) was > 6 h before PCC dose or the pre-post PCC INR was > 12 h were excluded. The primary outcome was achieving an INR ≤ 1.5 post PCC. Secondary outcomes were the change in INR over time, post PCC INR, thromboembolic events (TE), and death during hospital stay. Logistic regression modelled the primary outcome with and without a propensity score adjustment accounting for age, sex, actual body weight, dose, initial INR value, and time between INR measurements. Data are reported as median (IQR) or n (%) with p < 0.05 considered significant. RESULTS Eighty patients were included (PCC3 = 57, PCC4 = 23). More PCC4 patients achieved goal INR (87.0% vs. 31.6%, odds ratio (OR) = 14.4, 95% CI: 3.80-54.93, p < 0.001). This result remained true after adjusting for possible confounders (AOR = 10.7, 95% CI: 2.17-51.24, p < 0.001). The post-PCC INR was lower in the PCC4 group (1.3 (1.3-1.5) vs. 1.7 (1.5-2.0)). The INR change was greater for PCC4 (2.3 (1.3-3.3) vs. 1.1 (0.6-2.0), p = 0.003). Death during hospital stay (p = 0.52) and TE (p = 1.00) were not significantly different. CONCLUSIONS PCC4 was associated with a higher achievement of goal INR than PCC3. This relationship was observed in the unadjusted and propensity score adjusted results.
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Affiliation(s)
- David J Margraf
- Department of Experimental and Clinical Pharmacology, College of Pharmacy, University of Minnesota, 7-115E Weaver-Densford Hall, 308 Harvard St. SE, Minneapolis, MN, 55455, USA
| | - Scott Seaburg
- Department of Pharmacy Services, North Memorial Health Hospital, Robbinsdale, MN, USA
| | - Gregory J Beilman
- Division of Critical Care & Acute Care Surgery, Department of Surgery, University of Minnesota, Minneapolis, MN, USA
| | - Julian Wolfson
- Division of Biostatistics, School of Public Health, University of Minnesota, Minneapolis, MN, USA
| | - Jonathan C Gipson
- Trauma and Acute Care Surgery, North Memorial Health Hospital, Robbinsdale, MN, USA
| | - Scott A Chapman
- Department of Experimental and Clinical Pharmacology, College of Pharmacy, University of Minnesota, 7-115E Weaver-Densford Hall, 308 Harvard St. SE, Minneapolis, MN, 55455, USA.
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Milling TJ, Pollack CV. A review of guidelines on anticoagulation reversal across different clinical scenarios – Is there a general consensus? Am J Emerg Med 2020; 38:1890-1903. [PMID: 32750627 PMCID: PMC9245126 DOI: 10.1016/j.ajem.2020.05.086] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 04/13/2020] [Accepted: 05/22/2020] [Indexed: 12/23/2022] Open
Affiliation(s)
- Truman J Milling
- Department of Surgery and Perioperative Care, Dell Medical School, Austin, TX, USA; Department of Neurology, Seton Dell Medical School Stroke Institute, Austin, TX, USA
| | - Charles V Pollack
- Department of Emergency Medicine, University of Mississippi Medical Center, Jackson, MS, USA.
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Thrombin generation and thromboelastometry in monitoring the in-vitro reversal of warfarin: a comparison between 3-factor and 4-factor prothrombin complex concentrates. Blood Coagul Fibrinolysis 2020; 31:127-131. [PMID: 31934885 DOI: 10.1097/mbc.0000000000000887] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
: The efficacy of three-factor prothrombin complex concentrates (PCCs) in the reversal of vitamin K antagonists is still a matter of debate. We compared the 'in-vitro' effect of three PCCs (one three-factor and two four-factor) on international normalized ratio (INR), thrombin generation and thromboelastometry of patients at different degrees of anticoagulation with vitamin K antagonist. We tested three concentrations of PCC (0.5, 1 and 1.5 U/ml) in six patients: three (INR 2.0-2.9) and three (INR 3.0-4.0). In this preliminary phase, we determined the lowest effective dose for a target INR less than 1.5 and to normalize endogenous thrombin potential and clotting time in EXTEM assay. In the validation phase, we tested the effect of the newly determined lowest effective PCC dose on samples of 40 (INR 2.0-2.9) and 20 (INR 3.0-4.0) patients. The minimum efficacious dosage to achieve the target INR with three-factor PCC (3-PCC) was 0.5 (INR 2.0-2.9) and 1.5 U/ml (INR 3.0-4.0). Four-factor PCCs (4-PCCs) achieved target INR with the lowest dose (0.5 U/ml) independently of baseline INR. Thrombin generation endogenous thrombin potential and EXTEM clotting time achieved normal values with the lowest dose (0.5 U/ml) of either 3-PCC or 4-PCC independently of baseline INR. Data observed in the preliminary phase were confirmed in the validation phase. 3-PCC appears to be as effective as 4-PCC in reversing oral anticoagulant treatment based on thrombin generation and EXTEM data, but not INR data, at least in the range of INR considered in our study. Further studies are needed to address the clinical implications of our results.
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Abstract
PURPOSE OF REVIEW Anticoagulants in general, but especially the relatively new direct oral anticoagulants and platelet inhibitors, pose a great challenge for physicians in the hemorrhaging patient. The aim of the present review is to provide an overview on recent studies dealing with the reversal of anticoagulation in the hemorrhaging patient and to describe our therapeutic emergency strategy for those patients. RECENT FINDINGS A specific antidote for dabigatran is already on the market and antidotes for the direct and indirect factor Xa inhibitors are in development. Moreover, bleeding under platelet inhibitors remains critical with very little evidence on effective reversal strategies. SUMMARY To reverse anticoagulation in the hemorrhaging patient, specific antidotes should be the first option if available, followed by four-factor prothrombin complex concentrate (PCC), activated PCC and recombinant activated factor seven as the emergency strategy. Fibrinogen concentrate, antifibrinolytics and oral charcoal, respectively, can be considered as an additional measure. Massive blood loss and thrombocytopenia should be treated independently according to the respective, local guidelines for (massive) transfusion of blood and blood products.
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Ostermann H, von Heymann C. Prothrombin complex concentrate for vitamin K antagonist reversal in acute bleeding settings: efficacy and safety. Expert Rev Hematol 2019; 12:525-540. [PMID: 31159607 DOI: 10.1080/17474086.2019.1624520] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Introduction: Current guidelines recommend the administration of prothrombin complex concentrate in combination with vitamin K for normalization of coagulation in patients presenting with vitamin K antagonist-associated major bleeding, but until recently no adequately powered comparative trials had been conducted to support these recommendations. In this article, the authors review the evidence from studies assessing prothrombin complex concentrate treatment in these patients. Areas covered: A PubMed search (spanning January 1900 to September 2018) was conducted using the following search terms: prothrombin complex concentrate* AND (warfarin or (vitamin K antagonist*)), and papers relevant to major hemorrhagic events were identified; results from studies that used a randomized controlled trial (RCT) or a prospective design are presented here. Overall, the identified studies support the current guideline recommendations and indicate that prothrombin complex concentrates have at least similar safety profiles to other treatment options, such as fresh frozen plasma and recombinant activated factor VII. Expert opinion: It is hoped that the results from studies discussed here will inform future guideline updates; however, local clinical practice may also occasionally act as a barrier to adoption of guideline recommendations. There is an urgent need for further RCTs/prospective trials directly comparing PCC and plasma administration in acute bleeding settings.
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Affiliation(s)
- Helmut Ostermann
- a Department of Hematology/Oncology , Ludwig-Maximilians-Universität München , Munich , Germany
| | - Christian von Heymann
- b Department of Anesthesia, Intensive Care Medicine, Emergency Medicine and Pain Therapy , Vivantes Klinikum im Friedrichshain , Berlin , Germany
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