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Umashankar K, Mammi M, Badawoud E, Tang Y, Zhou M, Borges JC, Liew A, Migliore M, Mekary RA. Efficacy and Safety of Direct Oral Anticoagulants (DOACs) Versus Warfarin in Atrial Fibrillation Patients with Prior Stroke: a Systematic Review and Meta-analysis. Cardiovasc Drugs Ther 2023; 37:1225-1237. [PMID: 35467313 DOI: 10.1007/s10557-022-07336-w] [Citation(s) in RCA: 1] [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] [Accepted: 04/14/2022] [Indexed: 11/25/2022]
Abstract
BACKGROUND The purpose of this meta-analysis was to compare efficacy and safety of direct oral anticoagulants (DOACs) to warfarin for secondary stroke prevention among adult patients with atrial fibrillation and prior stroke. METHODS Major repositories were screened for randomized controlled trials (RCTs), RCT subgroups, and observational studies (OBSs, divided in claims and non-claims). Occurrences of ischemic stroke or transient ischemic attack, systemic embolism, all-cause mortality, intracranial hemorrhage (ICH), and major bleeding were outcomes of interest. Hazard ratios (HRs) and their confidence intervals (95%CIs) were pooled using random-effects models for each study design. Claims studies were analyzed separately from non-claims, while RCT subgroups were grouped with OBSs (non-claims) as the randomization was broken. RESULTS Of 8647 articles, 20 were included (one RCT, six RCT subgroups, nine claims, and four non-claims). Comparing DOACs to warfarin, pooled HRs (95%CI) were consistently in favor of DOACs although some did not reach statistical significance: for ischemic stroke, 0.84 (0.66-1.07) in claims; 0.90 (0.77-1.06) in non-claims and RCT subgroups; for systemic embolism, 0.77 (0.62-0.96) in claims; 0.86 (0.77-0.96) in non-claims and RCT subgroups; for all-cause mortality, 0.57 (0.33-0.99) in claims; 0.87 (0.79-0.96) in non-claims and RCT subgroups; for ICH, 0.72 (0.39-1.33) in claims; 0.51 (0.38-0.67) in non-claims and RCT subgroups; and for major bleeding, 0.86 (0.71-1.03) in claims; 0.90 (0.76-1.08) for non-claims and RCT subgroups. CONCLUSION DOACs were associated with better efficacy and safety profiles than warfarin in atrial fibrillation patients with prior stroke, more specifically a lower risk of systemic embolism, all-cause mortality, and ICH.
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Affiliation(s)
- Kandavadivu Umashankar
- School of Pharmacy, Massachusetts College of Pharmacy and Health Sciences (MCPHS) University, Boston, MA, USA
| | - Marco Mammi
- Neurosurgery Unit, Santa Croce e Carle Hospital, Cuneo, Italy
- Computational Neuroscience Outcomes Center, Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Ebtissam Badawoud
- School of Pharmacy, Massachusetts College of Pharmacy and Health Sciences (MCPHS) University, Boston, MA, USA
| | - Yuzhi Tang
- School of Pharmacy, Massachusetts College of Pharmacy and Health Sciences (MCPHS) University, Boston, MA, USA
| | - Mengqi Zhou
- School of Pharmacy, Massachusetts College of Pharmacy and Health Sciences (MCPHS) University, Boston, MA, USA
| | - Jorge C Borges
- Division of Cardiology, Department of Internal Medicine, Texas Tech University Health Sciences Center (TTUHSC), Paul L. Foster School of Medicine, El Paso, TX, USA
| | - Aaron Liew
- Portiuncula University Hospital and National University of Ireland Galway (NUIG), Galway, Ireland
| | - Mattia Migliore
- School of Pharmacy, Massachusetts College of Pharmacy and Health Sciences (MCPHS) University, Boston, MA, USA
| | - Rania A Mekary
- School of Pharmacy, Massachusetts College of Pharmacy and Health Sciences (MCPHS) University, Boston, MA, USA.
- Computational Neuroscience Outcomes Center, Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
- Research Faculty, Harvard Medical School, Brigham and Women's Hospital (CNOC), 179 Longwood Avenue, Boston, MA, 02115, USA.
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Ma F, Xu W, Chen J, Zhang J. Non-major bleeding risk of direct oral anticoagulants versus vitamin K antagonists for stroke prevention with atrial fibrillation: a systematic review and network meta-analysis. Eur J Clin Pharmacol 2023; 79:1013-1022. [PMID: 37310479 DOI: 10.1007/s00228-023-03520-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 06/04/2023] [Indexed: 06/14/2023]
Abstract
BACKGROUND Direct oral anticoagulants (DOACs) are associated with bleeding. Patients often stop taking DOACs due to non-major bleeding, which may lead to stroke recurrence. We aimed to determine the risk of non-major bleeding using different DOACs to prevent strokes in atrial fibrillation (AF). METHODS A systematic search of four databases (PubMed, EMBASE, Web of Science, and Cochrane Library) was performed to identify randomized controlled trials (RCTs) reporting non-major bleeding events in patients taking DOACs or vitamin K antagonists (VKAs). In this frequency-based network meta-analysis, odds ratios and 95% confidence intervals were used for reporting. Based on the surface under the cumulative ranking curves (SUCRA), the relative ranking probability of each group was generated. RESULTS Nineteen randomized controlled trials (RCTs) (involving 85,826 patients) were included. For clinically relevant non-major bleeding, the risk for bleeding was lowest for apixaban (SUCRA, 93.9), followed by that for VKAs (SUCRA, 47.7), dabigatran (SUCRA, 40.3), rivaroxaban (SUCRA, 35.9), and edoxaban (SUCRA, 32.2). The minor bleeding safety of DOACs was ranked from highest to lowest as follows: apixaban (SUCRA, 78.1), edoxaban (SUCRA, 69.4), dabigatran (SUCRA, 48.8), and VKAs (SUCRA, 3.7). CONCLUSIONS Based on current evidence, for stroke prevention in patients with AF, the safest DOAC is apixaban in terms of non-major bleeding. This suggests that apixaban may have a lower risk of non-major bleeding than other anticoagulants and may help provide some clinical reference for choosing a more appropriate drug for the patient.
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Affiliation(s)
- Fuxin Ma
- Department of Pharmacy, Fujian Maternity and Child Health Hospital College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, China
| | - Wenlin Xu
- Department of Pharmacy, Fujian Maternity and Child Health Hospital College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, China
| | - Jiana Chen
- Department of Pharmacy, Fujian Maternity and Child Health Hospital College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, China
| | - Jinhua Zhang
- Department of Pharmacy, Fujian Maternity and Child Health Hospital College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, China.
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Xu W, Lv M, Wu S, Jiang S, Zeng Z, Fang Z, Qian J, Chen M, Chen J, Zhang J. Severe Bleeding Risk of Direct Oral Anticoagulants Versus Vitamin K Antagonists for Stroke Prevention and Treatment in Patients with Atrial Fibrillation: A Systematic Review and Network Meta-Analysis. Cardiovasc Drugs Ther 2023; 37:363-377. [PMID: 34436708 DOI: 10.1007/s10557-021-07232-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/18/2021] [Indexed: 11/26/2022]
Abstract
PURPOSE We aimed to determine the safety of direct oral anticoagulants (DOACs) for stroke prevention and treatment in patients with atrial fibrillation (AF). METHODS A systematic search of four databases (PubMed, EMBASE, Web of Science, and Cochrane Library) was performed to identify randomized controlled trials (RCTs) reporting severe bleeding events in patients taking DOACs or vitamin K antagonists (VKAs). In this frequency-based network meta-analysis, odds ratios and 95% confidence intervals were used for reporting. Based on the surface under the cumulative ranking curves (SUCRA), the relative ranking probability of each group was generated. RESULTS Twenty-three RCTs met the inclusion criteria, and a total of 87,616 patients were enrolled. The bleeding safety of DOACs for stroke prevention and treatment in patients with AF was ranked from highest to lowest as follows: fatal bleeding: edoxaban (SUCRA,80.2), rivaroxaban (SUCRA,68.3), apixaban (SUCRA,48.5), dabigatran (SUCRA,40.0), VKAs (SUCRA,12.9); major bleeding: dabigatran (SUCRA,74.0), apixaban (SUCRA,71.5), edoxaban (SUCRA,66.5), rivaroxaban (SUCRA,22.7), VKAs (SUCRA,15.4); gastrointestinal bleeding: apixaban (SUCRA,55.9), VKAs (SUCRA,53.7), edoxaban (SUCRA,50.5), rivaroxaban (SUCRA,50.4), dabigatran (SUCRA,39.5); intracranial hemorrhage: dabigatran (SUCRA,84.6), edoxaban (SUCRA,74.1), apixaban (SUCRA,65.8), rivaroxaban (SUCRA,24.4), VKAs (SUCRA,1.1). CONCLUSION Based on current evidence, for stroke prevention and treatment in patients with AF, the most safe DOAC is edoxaban in terms of fatal bleeding; dabigatran in terms of major bleeding and intracranial hemorrhage and apixaban in terms of gastrointestinal bleeding. However, given the nature of indirect comparisons, more high-quality evidence from head-to-head comparisons is still needed to confirm them.
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Affiliation(s)
- Wenlin Xu
- Department of Pharmacy, Fujian Medical University Union Hospital, #29 Xinquan Road, Fuzhou, 350001, China
| | - Meina Lv
- Department of Pharmacy, Fujian Medical University Union Hospital, #29 Xinquan Road, Fuzhou, 350001, China
| | - Shuyi Wu
- Department of Pharmacy, Fujian Medical University Union Hospital, #29 Xinquan Road, Fuzhou, 350001, China
| | - Shaojun Jiang
- Department of Pharmacy, Fujian Medical University Union Hospital, #29 Xinquan Road, Fuzhou, 350001, China
| | - Zhiwei Zeng
- Department of Pharmacy, Fujian Medical University Union Hospital, #29 Xinquan Road, Fuzhou, 350001, China
| | - Zongwei Fang
- Department of Pharmacy, Fujian Medical University Union Hospital, #29 Xinquan Road, Fuzhou, 350001, China
| | - Jiafen Qian
- Department of Pharmacy, Fujian Medical University Union Hospital, #29 Xinquan Road, Fuzhou, 350001, China
| | - Mingrong Chen
- Department of Pharmacy, Fujian Medical University Union Hospital, #29 Xinquan Road, Fuzhou, 350001, China
| | - Jiana Chen
- Department of Pharmacy, Fujian Medical University Union Hospital, #29 Xinquan Road, Fuzhou, 350001, China
| | - Jinhua Zhang
- Department of Pharmacy, Fujian Medical University Union Hospital, #29 Xinquan Road, Fuzhou, 350001, China.
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Gastrointestinal Bleeding on Oral Anticoagulation: What is Currently Known. Drug Saf 2022; 45:1449-1456. [PMID: 36227528 DOI: 10.1007/s40264-022-01243-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/20/2022] [Indexed: 11/03/2022]
Abstract
Gastrointestinal bleeding (GIB) is the most common type of bleeding occurring in patients on oral anticoagulation. A meta-analysis of the landmark randomized controlled trials (RCTs) for patients with atrial fibrillation demonstrated that direct oral anticoagulants (DOACs) were associated with higher GIB rates compared to warfarin. However, significant heterogeneity existed between studies. While rivaroxaban, high-dose dabigatran, and high-dose edoxaban were associated with higher GIB rates than warfarin, GIB rates were similar between warfarin users and both apixaban and low-dose dabigatran users. Additionally, previous observational studies have yielded conflicting reports on whether GIB rates differ between warfarin and DOACs. Meta-analyses of observational studies demonstrated that warfarin is associated with lower rates of GIB compared to rivaroxaban, similar or lower rates compared to dabigatran, and higher rates compared to apixaban. Importantly, no RCT has compared individual DOACs directly and due to the different selection criteria of the initial RCTs, indirect comparisons between DOACs using these studies are unreliable. The best available information of comparisons between individual DOACs is therefore limited to observational studies. There is mounting evidence that suggests that rivaroxaban is associated with a higher risk of GIB compared to other DOACs. Finally, GIB induced by oral anticoagulation may have some positive aspects. Interestingly, there are studies that indicate oral anticoagulation facilitates colorectal cancer detection. Furthermore, results from RCTs and observational studies suggest that warfarin may even decrease the incidence of cancer.
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Ingason AB, Rumba E, Hreinsson JP, Agustsson AS, Lund SH, Palsson DA, Reynisson IE, Gudmundsdottir BR, Onundarson PT, Tryggvason G, Bjornsson ES. Warfarin is associated with higher rates of epistaxis compared to direct oral anticoagulants: A nationwide propensity score-weighted study. J Intern Med 2022; 292:501-511. [PMID: 35411982 DOI: 10.1111/joim.13498] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Although epistaxis is one of the most common side effects of oral anticoagulation, it is unclear whether epistaxis rates vary between different oral anticoagulants (OAC). OBJECTIVE To compare rates of clinically relevant epistaxis between OAC. METHODS Epistaxis event rates were compared between new users of apixaban, dabigatran, rivaroxaban, and warfarin in a nationwide population-based cohort study over a 5-year study period, 2014-2019. Data was collected from the Icelandic Medicine Registry and the five major hospitals in Iceland. Inverse probability weighting (IPW) was used to yield balanced baseline characteristics, and epistaxis rates were compared using Kaplan-Meier survival estimates and Cox regression. RESULTS During the study period, 2098 patients received apixaban, 474 dabigatran, 3106 rivaroxaban, and 1403 warfarin. In total, 93 patients presented with clinically relevant epistaxis, including 11 (12%) major epistaxis events and one fatal epistaxis episode. Furthermore, seven patients (9%) with non-major epistaxis later presented with major bleeding during the follow-up period. Warfarin use was associated with higher rates of epistaxis compared to apixaban (2.2 events per 100-person years (events/100-py) vs. 0.6 events/100-py, hazard ratio [HR] 4.22, 95% confidence interval [CI] 2.08-8.59, p < 0.001), rivaroxaban (2.2 events/100-py vs. 1.0 events/100-py, HR 2.26, 95% CI 1.28-4.01, p = 0.005), and dabigatran (2.2 events/100-py vs. no events, HR n/a, p < 0.001). CONCLUSION Warfarin treatment was associated with higher rates of clinically relevant epistaxis compared to direct oral anticoagulants.
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Affiliation(s)
- Arnar B Ingason
- Faculty of Medicine, University of Iceland, Reykjavik, Iceland.,Department of Gastroenterology and Hepatology, Landspitali University Hospital, Reykjavik, Iceland
| | - Edward Rumba
- Faculty of Medicine, University of Iceland, Reykjavik, Iceland.,Department of Gastroenterology and Hepatology, Landspitali University Hospital, Reykjavik, Iceland
| | - Johann P Hreinsson
- Department of Medicine, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Arnar S Agustsson
- Faculty of Medicine, University of Iceland, Reykjavik, Iceland.,Department of Gastroenterology and Hepatology, Landspitali University Hospital, Reykjavik, Iceland
| | | | - Daniel A Palsson
- Faculty of Medicine, University of Iceland, Reykjavik, Iceland.,Department of Gastroenterology and Hepatology, Landspitali University Hospital, Reykjavik, Iceland
| | | | - Brynja R Gudmundsdottir
- Department of Laboratory Hematology and Coagulation Center, Landspitali University Hospital, Reykjavik, Iceland
| | - Pall T Onundarson
- Faculty of Medicine, University of Iceland, Reykjavik, Iceland.,Department of Laboratory Hematology and Coagulation Center, Landspitali University Hospital, Reykjavik, Iceland
| | - Geir Tryggvason
- Faculty of Medicine, University of Iceland, Reykjavik, Iceland.,Department of Otolaryngology - Head and Neck Surgery, Landspitali University Hospital, Reykjavik, Iceland
| | - Einar S Bjornsson
- Faculty of Medicine, University of Iceland, Reykjavik, Iceland.,Department of Gastroenterology and Hepatology, Landspitali University Hospital, Reykjavik, Iceland
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Sin CF, Wong KP, Wong HM, Siu CW, Yap DYH. Plasma Rivaroxaban Level in Patients With Early Stages of Chronic Kidney Disease-Relationships With Renal Function and Clinical Events. Front Pharmacol 2022; 13:888660. [PMID: 35662694 PMCID: PMC9157352 DOI: 10.3389/fphar.2022.888660] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 05/02/2022] [Indexed: 12/04/2022] Open
Abstract
Introduction Drug accumulation of rivaroxaban is a concern in patients with chronic kidney disease (CKD). Data regarding the plasma rivaroxaban levels in early CKD patients and its relationship with clinical events is lacking. Methods Early CKD patients (Stage 1-3) with atrial fibrillation who received rivaroxaban (15 or 20 mg daily) were recruited. Plasma rivaroxaban levels were measured at 2 hours (peak) and 24 hours (trough) after drug administration, and correlated with eGFR and clinically significant events during the follow-up period (1 January 2018 to 31 October 2021). Results Ninety-two patients were included (CKD stage 1 n=10, stage 2 n=53, stage 3 n=29). Plasma trough levels in patients with stage 3 CKD were significantly higher than those with stage 2 and 1 CKD (66.0±34.9 ng/ml vs. 35.7 ± 24.7 ng/ml vs. 34.7 ± 26.2 ng/ml, respectively, p=0.005), and showed inverse relationship with eGFR (r=0.391, p=0.001) in patients receiving 20 mg daily. The plasma trough rivaroxaban level correlated with PT and APTT (r = 0.650 and 0.44, respectively, p<0.001 for both). Plasma trough rivaroxaban level in those with bleeding were higher than those who did not (59.9 ± 35.6 ng/ml vs. 41.1 ± 29.2 ng/ml, p=0.011), and multivariate analysis suggested that plasma trough rivaroxaban level was associated with the rate of bleeding complications (OR: 1.020, 95% CI 1.002-1.038, p=0.028). Conclusion Plasma trough rivaroxaban levels correlated with renal function in early CKD patients, and its measurement may help dosage optimization in patients with renal impairment. Moreover, our data suggests that there may be an association between plasma trough rivaroxaban level and the rate of bleeding complication.
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Affiliation(s)
- Chun-Fung Sin
- Department of Pathology, Queen Mary Hospital, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Ka-Ping Wong
- Department of Pathology, Queen Mary Hospital, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Hoi-Man Wong
- Department of Pathology, Queen Mary Hospital, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Chung-Wah Siu
- Division of Cardiology, Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Desmond Y. H. Yap
- Division of Nephrology, Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
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Lv M, Wu T, Jiang S, Chen W, Zhang J. Risk of Intracranial Hemorrhage Caused by Direct Oral Anticoagulants for Stroke Prevention in Patients With Atrial Fibrillation (from a Network Meta-Analysis of Randomized Controlled Trials). Am J Cardiol 2022; 162:92-99. [PMID: 34756593 DOI: 10.1016/j.amjcard.2021.09.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 09/01/2021] [Accepted: 09/07/2021] [Indexed: 11/25/2022]
Abstract
Patients with atrial fibrillation (AF) who take direct oral anticoagulants (DOACs) face the risk of intracranial hemorrhage (ICH), which can be serious and even life threatening, but the risk of ICH of anticoagulants is still controversial. In this meta-analysis, we compared the risk of ICH between vitamin K antagonists (VKAs) and DOACs. Furthermore, we also compared the risk of ICH in different DOACs. PubMed, Embase, Web of Science, and the Cochrane Library were searched for relevant randomized controlled trials. The outcome was ICH, shown as the odds ratio (OR) with a 95% confidence interval (CI). DOACs were ranked by calculating the surface under the cumulative ranking curve (SUCRA). We included a total of 82,404 patients with AF. DOACs reduced the ICH risk by nearly half compared with VKAs (OR 0.47, 95% CI 0.40 to 0.54, p <0.001). VKAs were the least safe among all oral anticoagulants (SUCRA 1.7). Dabigatran 110 mg was the safest DOAC (SUCRA 87.3) for ICH risk, whereas rivaroxaban 20 mg was a relatively unsafe DOAC (SUCRA 27.5). Compared with rivaroxaban 20 mg, dabigatran 110 mg presented 53% (OR 0.47, 95% CI 0.27 to 0.82) lower relative risk for ICH. In conclusion, DOACs present less ICH risk than VKAs in patients with AF. For patients with AF who are at high risk of ICH, dabigatran 110 mg may be the safest choice among the DOACs.
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Zhang J, Wang X, Liu X, Larsen TB, Witt DM, Ye Z, Thabane L, Li G, Lip GYH. Comparative effectiveness and safety of direct acting oral anticoagulants in nonvalvular atrial fibrillation for stroke prevention: a systematic review and meta-analysis. Eur J Epidemiol 2021; 36:793-812. [PMID: 33993379 DOI: 10.1007/s10654-021-00751-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 04/12/2021] [Indexed: 01/26/2023]
Abstract
PURPOSE To systematically review available evidence of indirect comparisons from RCTs and direct comparisons from observational studies regarding the comparative effectiveness and safety of DOACs in patients with AF. METHODS Electronic databases including EMBASE, MEDLINE, and PUBMED were searched up to June 5th, 2020. Primary endpoints included effectiveness (stroke or systemic embolism [SE]) and safety (major bleeding) outcomes. Bucher methods and random-effects models were conducted for indirect and direct comparisons among DOACs, respectively. Ranking probability analyses and the number needed to treat for net effect (NNTnet) were applied. RESULTS A total of 36 studies, involving 7 RCTs (n = 60,292 patients) and 29 observational studies (n = 1,164,821 patients), were included for analyses. Regarding the risk of stroke/SE, no significant differences were found from indirect comparisons of RCTs among the DOACs. For major bleeding, apixaban tended to be safer than rivaroxaban and dabigatran based on both direct and indirect comparisons (all p < 0.05; evidence quality: very low to moderate). Ranking probability analysis showed that apixaban had a high probability of being the best treatment in decreased risk of stroke/SE and major bleeding (80.30% and 91.30%, respectively). Likewise, apixaban was found to have the highest net clinical benefit (0.02, 95% CI: 0.014-0.029) and smallest NNTnet (48, 95% CI: 35-74). CONCLUSIONS Apixaban appeared to have a favorable effectiveness-safety profile compared with the other DOACs in AF for stroke prevention, based on evidence from both direct and indirect comparisons. However, additional high-quality evidence is needed to support firm recommendations on clinical decision-making.
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Affiliation(s)
- Junguo Zhang
- Center for Clinical Epidemiology and Methodology (CCEM), Guangdong Second Provincial General Hospital, Guangzhou, 510317, China
| | - Xiaojie Wang
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-Sen University, Guangzhou, China
| | - Xintong Liu
- Department of Neurology, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Torben B Larsen
- Department of Cardiology, Aalborg University Hospital, Aalborg, Denmark
| | - Daniel M Witt
- Department of Pharmacotherapy, University of Utah, Salt Lake City, USA
| | - Zebing Ye
- Department of Cardiology, Guangdong Second Provincial General Hospital, Guangzhou, Guangdong, China
| | - Lehana Thabane
- Department of Health Research Methods, Evidence, and Impact (HEI), McMaster University, 1280 Main St West, Hamilton, ON, L8S 4L8, Canada
| | - Guowei Li
- Center for Clinical Epidemiology and Methodology (CCEM), Guangdong Second Provincial General Hospital, Guangzhou, 510317, China.
- Department of Health Research Methods, Evidence, and Impact (HEI), McMaster University, 1280 Main St West, Hamilton, ON, L8S 4L8, Canada.
| | - Gregory Y H Lip
- Liverpool Centre for Cardiovascular Science, University of Liverpool, 6 West Derby St, Liverpool, L7 8TX, UK.
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Su X, Yan B, Wang L, Lv J, Cheng H, Chen Y. Oral Anticoagulant Agents in Patients With Atrial Fibrillation and CKD: A Systematic Review and Pairwise Network Meta-analysis. Am J Kidney Dis 2021; 78:678-689.e1. [PMID: 33872690 DOI: 10.1053/j.ajkd.2021.02.328] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Accepted: 02/02/2021] [Indexed: 12/26/2022]
Abstract
OBJECTIVE To evaluate the relative efficacy and safety of different oral anticoagulant agents (OACs) for patients with atrial fibrillation (AF) and chronic kidney disease (CKD). STUDY DESIGN Systematic review and pairwise and Bayesian network meta-analysis. SETTING & STUDY POPULATIONS Adult patients with AF and CKD stages 3-5D who received OACs. SELECTION CRITERIA FOR STUDIES Randomized controlled trials (RCTs) and observational studies that reported the efficacy and safety outcomes of subgroups with a glomerular filtration rate (GFR)<60mL/min. DATA EXTRACTION Two reviewers independently abstracted data, assessed study quality, and rated the strength of evidence (SOE). ANALYTICAL APPROACH Random-effects models using restricted maximum-likelihood methods were fit for the pairwise meta-analyses as well as a network meta-analysis within a Bayesian framework. RESULTS Pairwise meta-analysis including 8 RCTs and 46 observational studies showed that direct OACs (DOACs) were superior to warfarin in preventing thromboembolic events (hazard ratio [HR], 0.86 [95% CI, 0.78-0.95]), without heterogeneity (I2=10.5%), and in reducing the risk of bleeding events (HR, 0.81 [95% CI, 0.66-0.99]), with substantial heterogeneity (I2=69.8%), in patients with AF and a GFR of 15-60mL/min. Bayesian network meta-analysis including 8 RCTs showed that dose-adjusted apixaban and a 15-mg dose of edoxaban were superior to the other OAC regimens in reducing bleeding events. Dose-adjusted apixaban was more effective than edoxaban in preventing thromboembolic events for patients with AF and GFR in the range of 25-50 or 30-50mL/min. In dialysis recipients with AF, the use of OACs increased the risk of bleeding events by 28% (HR, 1.28 [95% CI, 1.03-1.60]) without significant beneficial effects versus not using anticoagulants. LIMITATIONS Low SOE and heterogeneity in most comparisons. CONCLUSIONS This study suggests that DOACs are superior to warfarin for the prevention of thromboembolic events and reduction in bleeding risk in patients with AF and mild to moderate kidney disease. However, the low SOE limits the conclusions that can be drawn about the preferred DOAC. Notably, the use of OACs may increase bleeding risk without significant benefits in dialysis recipients with AF. REGISTRATION Registered at PROSPERO with identification number CRD42018090896.
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Affiliation(s)
- Xiaole Su
- Division of Nephrology, Beijing Anzhen Hospital, Capital Medical University; Division of Nephrology, Shanxi Medical University Second Hospital, Shanxi Kidney Disease Institute, Taiyuan, China
| | - Bingjuan Yan
- Division of Nephrology, Shanxi Medical University Second Hospital, Shanxi Kidney Disease Institute, Taiyuan, China
| | - Lihua Wang
- Division of Nephrology, Shanxi Medical University Second Hospital, Shanxi Kidney Disease Institute, Taiyuan, China
| | - Jicheng Lv
- Division of Nephrology, Peking University First Hospital, Peking University Institute of Nephrology, Beijing
| | - Hong Cheng
- Division of Nephrology, Beijing Anzhen Hospital, Capital Medical University
| | - Yipu Chen
- Division of Nephrology, Beijing Anzhen Hospital, Capital Medical University.
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Risk of intracranial hemorrhage with direct oral anticoagulants: a systematic review and meta-analysis of randomized controlled trials. J Neurol 2021; 269:664-675. [PMID: 33594452 DOI: 10.1007/s00415-021-10448-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 02/03/2021] [Accepted: 02/04/2021] [Indexed: 12/17/2022]
Abstract
OBJECTIVE We performed a systematic review and meta-analysis to compare the risk of intracranial hemorrhage (ICH) between direct oral anticoagulants (DOACs) and other antithrombotic drugs in detail across all diseases. METHODS PubMed, EMBASE, Web of Science, and the Cochrane Library were searched for relevant randomized controlled trials (RCTs). Heterogeneity was examined using the I2 statistic. Risk ratio (RR) and 95% confidence interval (CI) were calculated using random-effects meta-analysis. RESULTS Fifty-five RCTs were included in this meta-analysis. Compared with vitamin K antagonists (VKAs), dabigatran reduced the risk of ICH by 60% (RR 0.40; 95% CI 0.28-0.57), apixaban by 57% (RR 0.43; 95% CI 0.31-0.58), edoxaban by 56% (RR 0.44; 95% CI 0.29-0.67) and rivaroxaban by 41% (RR 0.59; 95%CI 0.44-0.80). Compared with low-molecular-weight heparins (LMWHs), apixaban, edoxaban and rivaroxaban had a similar risk of ICH. Compared with aspirin, dabigatran and apixaban had a similar risk of ICH, while rivaroxaban posed an increased risk of ICH (RR 2.12; 95% CI 1.31-3.44). For secondary prevention stroke, DOACs reduced the risk of ICH by 46% compared with warfarin (RR 0.54; 95% CI [0.42-0.70]) and had a similar risk of ICH compared with aspirin. CONCLUSION All DOACs had a lower risk of ICH than VKAs. In terms of the risk of ICH, DOACs were overall as safe as LMWHs, and apixaban and dabigatran were as safe as aspirin, but rivaroxaban was not. For secondary prevention stroke, the risk of ICH with DOACs was overall lower than warfarin and similar to aspirin, but it should be noted that compared with aspirin, rivaroxaban may increase the risk of ICH. This is the first pair-wise meta-analysis that compares the risk of ICH between DOACs and other antithrombotic drugs in detail across all diseases, which may have certain significance for patients with high risk of ICH to choose antithrombotic drugs in clinical practice.
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11
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Chan YH, Lee HF, Chao TF, Wu CT, Chang SH, Yeh YH, See LC, Kuo CT, Chu PH, Wang CL, Lip GYH. Real-world Comparisons of Direct Oral Anticoagulants for Stroke Prevention in Asian Patients with Non-valvular Atrial Fibrillation: a Systematic Review and Meta-analysis. Cardiovasc Drugs Ther 2020; 33:701-710. [PMID: 31745687 DOI: 10.1007/s10557-019-06910-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Whether four direct oral anticoagulants (DOACs) are superior to warfarin among Asians with non-valvular atrial fibrillation (NVAF) remains unclear in the real-world setting. METHODS We searched PubMed and Medline + Journals@Ovid + EMBASE from September 17, 2009 to May 4, 2019 to perform a systematic review and meta-analysis of all observational real-world studies comparing four DOACs with warfarin specifically focused on Asian patients with NVAF. RESULTS From the original 212 results retrieved, 18 studies were included in the meta-analysis. Overall, DOACs were associated with lower risks of thromboembolism (hazard ratio; [95% confidence interval], 0.70; [0.63-0.78]), acute myocardial infarction (0.67; [0.57-0.79]), all-cause mortality (0.62; [0.56-0.69]), major bleeding (0.59; [0.50-0.69]), intracranial hemorrhage (0.50; [0.40-0.62]), gastrointestinal bleeding (0.66; [0.46-0.95]), and any bleeding (0.82; [0.73-0.92]) than warfarin. There was statistic heterogeneity between DOACs for the risks of thromboembolism (P interaction = 0.03) and acute myocardial infarction (P interaction = 0.007) when compared to warfarin. However, all DOACs showed lower risks of thromboembolism and acute myocardial infarction than warfarin when pooling studies that compared individual DOAC with warfarin. With regard to the other outcomes when compared to warfarin, there was no statistical heterogeneity between DOACs. In addition, the effectiveness and safety of four DOACs versus warfarin persisted in the subgroups of either standard-dose or low-dose DOACs. CONCLUSIONS The meta-analysis shows that the DOACs had greater effectiveness and safety compared to warfarin in real-world practice for stroke prevention, among Asian patients with NVAF.
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Affiliation(s)
- Yi-Hsin Chan
- The Cardiovascular Department, Chang Gung Memorial Hospital, No.259, Wenhua 1st Rd., Guishan Dist., Taoyuan City, 33302, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, 33302, Taiwan.,Microscopy Core Laboratory, Chang Gung Memorial Hospital, Linkou, Taoyuan, 33305, Taiwan
| | - Hsin-Fu Lee
- The Cardiovascular Department, Chang Gung Memorial Hospital, No.259, Wenhua 1st Rd., Guishan Dist., Taoyuan City, 33302, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, 33302, Taiwan.,Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Tze-Fan Chao
- Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,Institute of Clinical Medicine, Cardiovascular Research Center, National Yang-Ming University, Taipei, Taiwan
| | - Chia-Tung Wu
- The Cardiovascular Department, Chang Gung Memorial Hospital, No.259, Wenhua 1st Rd., Guishan Dist., Taoyuan City, 33302, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, 33302, Taiwan
| | - Shang-Hung Chang
- The Cardiovascular Department, Chang Gung Memorial Hospital, No.259, Wenhua 1st Rd., Guishan Dist., Taoyuan City, 33302, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, 33302, Taiwan
| | - Yung-Hsin Yeh
- The Cardiovascular Department, Chang Gung Memorial Hospital, No.259, Wenhua 1st Rd., Guishan Dist., Taoyuan City, 33302, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, 33302, Taiwan
| | - Lai-Chu See
- Department of Public Health, College of Medicine, Chang Gung University, Taoyuan, 33302, Taiwan.,Biostatistics Core Laboratory, Molecular Medicine Research Center, Chang Gung University, Taoyuan, 33302, Taiwan.,Division of Rheumatology, Allergy and Immunology, Department of Internal Medicine, Chang Gung Memorial Hospital, Linkou, Taoyuan, 33305, Taiwan
| | - Chi-Tai Kuo
- The Cardiovascular Department, Chang Gung Memorial Hospital, No.259, Wenhua 1st Rd., Guishan Dist., Taoyuan City, 33302, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, 33302, Taiwan
| | - Pao-Hsien Chu
- The Cardiovascular Department, Chang Gung Memorial Hospital, No.259, Wenhua 1st Rd., Guishan Dist., Taoyuan City, 33302, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, 33302, Taiwan
| | - Chun-Li Wang
- The Cardiovascular Department, Chang Gung Memorial Hospital, No.259, Wenhua 1st Rd., Guishan Dist., Taoyuan City, 33302, Taiwan. .,College of Medicine, Chang Gung University, Taoyuan, 33302, Taiwan.
| | - Gregory Y H Lip
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK.
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12
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Xiong Q, Wang C, Liu H, Tan Z, Chen C, Li J, Lip GYH, Hong K. Efficacy and Safety of Non-Vitamin K Antagonist Oral Anticoagulants in Asians With Nonvalvular Atrial Fibrillation: A Network Meta-Analysis. Clin Appl Thromb Hemost 2020; 25:1076029619885188. [PMID: 31718263 PMCID: PMC7019404 DOI: 10.1177/1076029619885188] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
There are few head-to-head trials directly comparing non-vitamin K antagonist oral anticoagulants (NOACs) against one other. A network meta-analysis (NMA) was performed to examine the indirect comparisons among NOACs in Asians with nonvalvular atrial fibrillation (NVAF). STATA 15.0 and ADDIS 1.16.8 softwares were used to perform the statistical analysis. Odds ratios with 95% credible intervals were applied to evaluate the end points. The probabilities of treatment rank were used to understand which interventions are more effective and safe, and the total rank probability was 1. In our NMA, the rank probabilities of apixaban in the case of stroke or systemic embolism, death from any cause, major bleeding, and intracranial hemorrhage (ICH) were 0.47, 0.49, 0.42, and 0.51, respectively. For cases of myocardial infarction, the rank probabilities of rivaroxaban were 0.40. This NMA indirectly compares the main efficacy and safety end points among NOACs in Asians with NVAF, and the rank probability analysis showed that apixaban likely performs best in cases of stroke or systemic embolism, death from any cause, and ICH; rivaroxaban may have the best performance for myocardial infarction.
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Affiliation(s)
- Qinmei Xiong
- Cardiovascular Department, the Second Affiliated Hospital of Nanchang University, Jiangxi, China
| | - Cen Wang
- Cardiovascular Department, the Second Affiliated Hospital of Nanchang University, Jiangxi, China
| | - Hualong Liu
- Cardiovascular Department, the Second Affiliated Hospital of Nanchang University, Jiangxi, China
| | - Zhaochong Tan
- Cardiovascular Department, the Second Affiliated Hospital of Nanchang University, Jiangxi, China
| | - Chen Chen
- Cardiovascular Department, the Second Affiliated Hospital of Nanchang University, Jiangxi, China
| | - Juxiang Li
- Cardiovascular Department, the Second Affiliated Hospital of Nanchang University, Jiangxi, China
| | - Gregory Y H Lip
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, United Kingdom.,Aalborg Thrombosis Research Unit, Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Kui Hong
- Cardiovascular Department, the Second Affiliated Hospital of Nanchang University, Jiangxi, China.,Jiangxi Key Laboratory of Molecular Medicine, Jiangxi, China
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Comparative efficacy and safety of warfarin care bundles and novel oral anticoagulants in patients with atrial fibrillation: a systematic review and network meta-analysis. Sci Rep 2020; 10:662. [PMID: 31959803 PMCID: PMC6971267 DOI: 10.1038/s41598-019-57370-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 12/18/2019] [Indexed: 01/04/2023] Open
Abstract
Warfarin care bundles (e.g. genotype-guided warfarin dosing, patient’s self-testing [PST] or patient’s self-management [PSM] and left atrial appendage closure) are based on the concept of combining several interventions to improve anticoagulation care. NOACs are also introduced for stroke prevention in atrial fibrillation (SPAF). However, these interventions have not been compared in head-to-head trials yet. We did a network meta-analysis based on a systematic review of randomized controlled trials comparing anticoagulant interventions for SPAF. Studies comparing these interventions in adults, whether administered alone or as care bundles were included in the analyses. The primary efficacy outcome was stroke and the primary safety outcome was major bleeding. Thirty-seven studies, involving 100,142 patients were assessed. Compared to usual care, PSM significantly reduced the risk of stroke (risk ratio [RR] 0.24, 95% CI 0.08–0.68). For major bleeding, edoxaban 60 mg (0.80, 0.71–0.90), edoxaban 30 mg (0.48, 0.42–0.56), and dabigatran 110 mg (0.81, 0.71–0.94) significantly reduced the risk of major bleeding compared with usual warfarin care. Cluster rank plot incorporating stroke and major bleeding outcomes indicates that some warfarin care bundles perform as well as NOACs. Both interventions are therefore viable options to be considered for SPAF. Additional studies including head-to-head trials and cost-effectiveness evaluation are still warranted.
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14
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Ramagopalan SV, Stamp E, Sammon CJ, Besford M, Carroll R, Mehmud F, Alikhan R. Renal function and oral anticoagulant treatment of incident non-valvular atrial fibrillation: a retrospective study. Future Cardiol 2019; 15:301-309. [PMID: 31140872 DOI: 10.2217/fca-2019-0012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: To describe the renal function of individuals newly diagnosed with non-valvular atrial fibrillation in England, and describe how oral anticoagulant (OAC) treatment varies according to renal function. Patients & methods: We identified a cohort of individuals with non-valvular atrial fibrillation (n = 18,419) and described their renal function at diagnosis and the prevalence of OAC treatment initiation by renal function. Results: 79% of individuals had some evidence of renal dysfunction with 12% having a glomerular filtration rate <30 ml/min/1.73 m2. OAC treatment initiation in the 6 months following diagnosis was lower in individuals with severe renal dysfunction than in those with normal renal function. Conclusion: The high prevalence of renal dysfunction and low OAC treatment prevalence highlights the need for additional evidence regarding OACs in individuals with severe renal dysfunction.
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Affiliation(s)
- Sreeram V Ramagopalan
- Centre for Observational Research & Data Sciences, Bristol-Myers Squibb, UB8 1DH, UK
| | | | | | | | - Robert Carroll
- Centre for Observational Research & Data Sciences, Bristol-Myers Squibb, UB8 1DH, UK
| | | | - Raza Alikhan
- Department of Haematology, University Hospital of Wales, Cardiff & Vale University Health Board, Cardiff, CF14 4XW, UK
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15
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Fawzy AM, Yang WY, Lip GY. Safety of direct oral anticoagulants in real-world clinical practice: translating the trials to everyday clinical management. Expert Opin Drug Saf 2019; 18:187-209. [PMID: 30712419 DOI: 10.1080/14740338.2019.1578344] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
INTRODUCTION Direct oral anticoagulants (DOACs) may be regarded as some of the most successful innovations in recent times. These drugs which were specifically developed to overcome the challenges posed by warfarin did just that and in the process, have changed the outlook towards stroke prevention with anticoagulation. The decade of experience with these drugs that has resulted in the availability of large scale data on their safety profile has aided this. Areas covered: This review examines existing real-world studies (RWS) and their interpretation to better appreciate how they either complement or contradict findings from the hallmark trials. Specific focus has been made on the safety of DOACs, on their risks of major bleeding, intra-cranial haemorrhage (ICH), gastro-intestinal (GI) bleeding and all-cause mortality compared to warfarin and each other. DOAC use in the elderly and other sub-groups are briefly discussed. Expert opinion: Results for safety outcomes according to 'real world evidence' (RWE) are in-keeping with randomised controlled trials (RCTs) and currently, all 4 DOACs have been deemed at least as effective as warfarin, while demonstrating superiority in some aspects. While real world studies act as a complementary source of knowledge, traditional RCTs remain the gold standard for determining cause-effect relationships.
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Affiliation(s)
- Ameenathul M Fawzy
- a Institute of Cardiovascular Sciences , University of Birmingham , Birmingham , UK
| | - Wang-Yang Yang
- a Institute of Cardiovascular Sciences , University of Birmingham , Birmingham , UK.,b Department of Cardiology, Beijing AnZhen Hospital, National Clinical Research Centre for Cardiovascular Diseases , Capital Medical University , Beijing , China
| | - Gregory Yh Lip
- c Liverpool Centre for Cardiovascular Science , University of Liverpool and Liverpool Heart & Chest Hospital , Liverpool , UK
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16
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Gebreyohannes EA, Bhagavathula AS, Tegegn HG. Poor outcomes associated with antithrombotic undertreatment in patients with atrial fibrillation attending Gondar University Hospital: a retrospective cohort study. Thromb J 2018; 16:22. [PMID: 30237753 PMCID: PMC6142404 DOI: 10.1186/s12959-018-0177-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 07/12/2018] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Atrial fibrillation (AF) is a major risk factor for stroke as it increases the incidence of stroke nearly fivefold. Antithrombotic treatment is recommended for the prevention of stroke in AF patients. However, majorly due to fear of risk of bleeding, adherence to recommendations is not observed. The aim of this study was to investigate the impact of antithrombotic undertreatment, on ischemic stroke and/or all-cause mortality in patients with AF. METHODS A retrospective cohort study was conducted from January 7, 2017 to April 30 2017 using medical records of patients with AF attending Gondar University Hospital (GUH) between November 2012 and September 2016. Patients receiving appropriate antithrombotic management and those on undertreatment, were followed for development of ischemic stroke and/or all-cause mortality. Kaplan-Meier and a log-rank test was used to plot the survival analysis curve. Cox regression was used to determine the predictors of guideline-adherent antithrombotic therapy. RESULTS The final analysis included 159 AF patients with a median age of 60 years. Of these, nearly two third (64.78%) of patients were receiving undertreatment for antithrombotic medications. Upon multivariate analysis, history of ischemic stroke/transient ischemic attack (TIA) was associated with lower incidence of antithrombotic undertreatment. A significant increase (HR: 8.194, 95% CI: 2.911-23.066)] in the incidence of ischemic stroke and/or all-cause mortality was observed in patients with undertreatment. Up-on multivariate analysis, only increased age was associated with a statistically significant increase incidence of ischemic stroke and/or all-cause mortality, while only history of ischemic stroke/TIA was associated with a decrease in the risk of ischemic stroke and/or all-cause mortality. CONCLUSION Adherence to antithrombotic guideline recommendations was found to be crucial in reducing the incidence of ischemic stroke and/or all-cause mortality in patients with AF without increasing the risk of bleeding. However, undertreatment to antithrombotic medications was found to be high (64.78%) and was associated with poorer outcomes in terms of ischemic stroke and/or all-cause mortality. Impact on practice: This research highlighted the magnitude of antithrombotic undertreatment and its impact on ischemic stroke and/or all-cause mortality in patients with AF. This article has to alert prescribers to routinely evaluate AF patients' risk for ischemic stroke and provide appropriate interventions based on guideline recommendations.
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17
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Hart RG, Connolly SJ, Mundl H. Rivaroxaban for Stroke Prevention after Embolic Stroke of Undetermined Source. N Engl J Med 2018; 379:986-7. [PMID: 30184459 DOI: 10.1056/nejmc1809065] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Robert G Hart
- Population Health Research Institute, Hamilton, ON, Canada
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18
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Norby FL, Alonso A. Comparative effectiveness of rivaroxaban in the treatment of nonvalvular atrial fibrillation. J Comp Eff Res 2017; 6:549-560. [PMID: 28737102 DOI: 10.2217/cer-2017-0025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Rivaroxaban is a direct oral anticoagulant (DOAC) approved for the prevention of stroke and systemic embolism in patients with nonvalvular atrial fibrillation, a common arrhythmia. In this review, we summarize the effectiveness of rivaroxaban versus warfarin and the DOACs dabigatran, apixaban and edoxaban. The primary focus is on primary evidence from clinical trials, indirect comparison studies and real-world studies. While there are gaps in the literature, the evidence thus far indicates that rivaroxaban is superior to warfarin and similar to dabigatran, apixaban and edoxaban for the prevention of stroke or systemic embolism in patients with nonvalvular atrial fibrillation, although rivaroxaban may be associated with an elevated bleeding risk compared with other DOACs.
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Affiliation(s)
- Faye L Norby
- Division of Epidemiology & Community Health, School of Public Health, University of Minnesota, Minneapolis, MN 55454, USA
| | - Alvaro Alonso
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA 30322, USA
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19
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Almutairi AR, Zhou L, Gellad WF, Lee JK, Slack MK, Martin JR, Lo-Ciganic WH. Effectiveness and Safety of Non-vitamin K Antagonist Oral Anticoagulants for Atrial Fibrillation and Venous Thromboembolism: A Systematic Review and Meta-analyses. Clin Ther 2017; 39:1456-1478.e36. [PMID: 28668628 DOI: 10.1016/j.clinthera.2017.05.358] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 05/16/2017] [Accepted: 05/30/2017] [Indexed: 12/18/2022]
Abstract
PURPOSE The findings from the observational studies comparing the effectiveness and safety of non-vitamin K antagonist oral anticoagulants (NOACs) versus vitamin K antagonists (VKAs) for atrial fibrillation (AF) and venous thromboembolism (VTE) are inconsistent. We conducted separate meta-analyses examining the efficacy/effectiveness and safety of NOACs versus VKAs by disease (AF vs VTE), study design (randomized controlled trials [RCTs] vs observational studies), and NOAC (dabigatran, rivaroxaban, apixaban, and edoxaban). METHODS The main data sources included PubMed/MEDLINE, EMBASE, Web of Science, CINAHL, and Scopus from January 1, 2005, to February 15, 2016. We searched for Phase III RCTs and observational studies comparing NOACs versus VKAs. The primary outcomes were stroke/systemic embolism (SE) for AF; recurrent VTE/fatal pulmonary embolism (PE) for VTE; and major bleeding for both conditions. Secondary outcomes included stroke and myocardial infarction (MI) for AF, recurrent deep vein thrombosis (DVT)/PE for VTE, and mortality, intracranial hemorrhage (ICH), and gastrointestinal bleeding for both conditions. Pooled hazard ratios (HRs) were reported by using inverse variance-weighted random effects models. FINDINGS A total of 13 RCTs and 27 observational studies (AF, n = 32; VTE, n = 8) were included. For AF, dabigatran and VKAs were comparable for stroke/SE risk in 1 RCT (HR, 0.77 [95% CI, 0.57-1.03]) and 6 observational studies (HR, 1.03 [95% CI, 0.83-1.27]). Rivaroxaban had a 20% decreased risk of stroke/SE in 3 RCTs (HR, 0.80 [95% CI, 0.67-0.95]) compared with VKA, but the effect was nonsignificant in 3 observational studies (HR, 0.78 [95% CI, 0.59-1.04]). Apixaban decreased stroke/systemic embolism risk (HR, 0.79 [95% CI, 0.66-0.95]) compared with VKA in 1 RCT, but edoxaban was comparable to VKA (HR, 0.99 [95% CI, 0.77-1.28]) in 1 RCT (no observational studies available for apixaban/edoxaban). Dabigatran, apixaban, and edoxaban decreased the risk of hemorrhagic stroke, mortality, major bleeding, and ICH by 10% to 71% compared with VKAs but not rivaroxaban. For VTE, NOACs and VKAs were comparable for recurrent VTE/fatal PE/DVT/PE risk in 7 RCTs and 1 observational study. The 7 RCTs demonstrated a 32% to 69% decreased risk of major bleeding for dabigatran, rivaroxaban, and apixaban compared with VKAs. No difference was shown in 1 rivaroxaban observational study (HR, 0.77 [95% CI, 0.40-1.49]) and 1 edoxaban RCT (HR, 0.84 [95% CI, 0.59-1.20]). Except for dabigatran, the NOACs had a 61% to 86% decreased risk of ICH and gastrointestinal bleeding. IMPLICATIONS Overall, NOACs were comparable or superior to VKAs. Although no observational studies are currently available for apixaban/edoxaban, a few notable inconsistencies exist for dabigatran (ischemic stroke, MI) and rivaroxaban (stroke/SE, major bleeding in VTE) between RCTs and observational studies. Individualizing NOAC/VKA therapy based on benefit/safety profiles and patient characteristics is suggested.
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Affiliation(s)
- Abdulaali R Almutairi
- Department of Pharmacy Practice and Science, College of Pharmacy, University of Arizona, Tucson, Arizona
| | - Lili Zhou
- Department of Pharmacy Practice and Science, College of Pharmacy, University of Arizona, Tucson, Arizona
| | - Walid F Gellad
- Department of Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania; Center for Health Equity Research Promotion, Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, Pennsylvania
| | - Jeannie K Lee
- Department of Pharmacy Practice and Science, College of Pharmacy, University of Arizona, Tucson, Arizona
| | - Marion K Slack
- Department of Pharmacy Practice and Science, College of Pharmacy, University of Arizona, Tucson, Arizona
| | - Jennifer R Martin
- Department of Pharmacy Practice and Science, College of Pharmacy, University of Arizona, Tucson, Arizona; Arizona Health Sciences Library, University Libraries, University of Arizona, Tucson, Arizona
| | - Wei-Hsuan Lo-Ciganic
- Department of Pharmacy Practice and Science, College of Pharmacy, University of Arizona, Tucson, Arizona.
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20
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Sun Q, Chang S, Lu S, Zhang Y, Chang Y. The Efficacy and Safety of 3 Types of Interventions for Stroke Prevention in Patients With Cardiovascular and Cerebrovascular Diseases: A Network Meta-analysis. Clin Ther 2017; 39:1291-1312.e8. [PMID: 28606562 DOI: 10.1016/j.clinthera.2017.04.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Revised: 04/05/2017] [Accepted: 04/09/2017] [Indexed: 11/18/2022]
Abstract
PURPOSE The goal of this study was to compare the relative efficacy and safety of different types of interventions for stroke prevention in patients with cardiovascular and cerebrovascular diseases. METHODS This network meta-analysis (NMA) was conducted with a random effects model of Bayesian framework using Stata version 12.0. Odds ratios (ORs) and their credible intervals (CrIs) were applied for the efficacy and safety evaluation of various medical interventions, including aspirin, dipyridamole, ticlopidine, warfarin, and apixaban. In addition, the ranking of probability of every clinical outcome was estimated by comparing the surface under the cumulative ranking curve. FINDINGS Compared with dabigatran, both edoxaban and aspirin + warfarin exhibited a higher rate of all-cause stroke (OR, 2.84 [95% CrI, 1.17-6.97]; OR, 3.42 [95% CrI, 1.20-9.84]). With respect to intracranial hemorrhage, aspirin + clopidogrel yielded worse outcomes than 7 treatments, including placebo, apixaban, aspirin, aspirin + dipyridamole, cilostazol, clopidogrel, and dabigatran (OR, 2.21 [95% CrI, 1.45-3.40]; OR, 2.11 [95% CrI, 1.05-4.17]; OR, 1.53 [95% CrI, 1.11-2.15]; OR, 1.78 [95% CrI, 1.01-3.03]; OR, 4.17 [95% CrI, 1.37-14.28]; OR, 1.85 [95% CrI, 1.22-2.86]; and OR, 2.56 [95% CrI, 1.37-4.76]). In terms of ischemic stroke, dabigatran provided better efficacy than placebo, aspirin, and aspirin + dipyridamole (OR, 0.36 [95% CrI, 0.18-0.72]; OR, 0.43 [95% CrI, 0.21-0.84]; and OR, 0.41 [95% CrI, 0.17-0.94]). As for mortality, dabigatran resulted in a lower mortality compared with aspirin, aspirin + clopidogrel, edoxaban, and warfarin (OR, 0.48 [95% CrI, 0.23-0.97]; OR, 0.40 [95% CrI, 0.17-0.92]; OR, 0.27 [95% CrI, 0.10-0.72]; and OR, 0.52 [95% CrI, 0.28-0.92]). IMPLICATIONS There are still some limitations to our NMA research. For instance, the lack of direct evidence for some therapies resulted in inconsistencies, particularly for warfarin compared with placebo and clopidogrel under different end points. Moreover, the included randomized controlled trials for patients with cardiovascular and cerebrovascular diseases are relatively broad, involving atrial fibrillation, myocardial infarction, and large-artery atherosclerosis stroke. Although further research is needed, dabigatran is highly recommended based on the present NAM for the treatment of cardiovascular and cerebrovascular diseases due to the drug's efficacy and safety.
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Affiliation(s)
- Qian Sun
- Department of Ward Retired Officers Three, Tangshan Gongren Hospital of Ward Retire, Hebei, People's Republic of China
| | - Shumei Chang
- Department of Ward Retired Officers Three, Tangshan Gongren Hospital of Ward Retire, Hebei, People's Republic of China
| | - Songtao Lu
- Department of Ward Retired Officers Three, Tangshan Gongren Hospital of Ward Retire, Hebei, People's Republic of China
| | - Yajing Zhang
- Department of Medical Rehabilitation, Tangshan Gongren Hospital, Hebei, People's Republic of China
| | - Yajun Chang
- Department of Chinese Medicine, Tangshan Gongren Hospital, Hebei, People's Republic of China.
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Del-Carpio Munoz F, Gharacholou SM, Munger TM, Friedman PA, Asirvatham SJ, Packer DL, Noseworthy PA. Meta-Analysis of Renal Function on the Safety and Efficacy of Novel Oral Anticoagulants for Atrial Fibrillation. Am J Cardiol 2016; 117:69-75. [PMID: 26698882 DOI: 10.1016/j.amjcard.2015.09.046] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Revised: 09/28/2015] [Accepted: 09/28/2015] [Indexed: 01/31/2023]
Abstract
Novel oral anticoagulants (NOACs) are safe and effective for the prevention of stroke or systemic embolism (S/SE) in atrial fibrillation. The efficacy and safety of NOACs compared with warfarin has not been systematically assessed in subjects with mild or moderate renal dysfunction. We performed a meta-analysis of the randomized clinical trials that compared efficacy and safety (major bleeding) outcomes of NOACs compared to warfarin for the treatment of nonvalvular atrial fibrillation and had available data on renal function. We estimated the pooled relative risk (RR) of S/SE and major bleeding in relation to renal function (assessed by baseline estimated glomerular filtration rate divided in 3 groups: normal [estimated glomerular filtration rate >80 ml/min], mildly impaired [50 to 80 ml/min], and moderate impairment [<50 ml/min]). We included 4 randomized clinical trials enrolling a total of 58,338 subjects. The RRs of S/SE and major bleeding were higher in subjects with renal impairment compared to normal renal function, independent of type of anticoagulant therapy. In subjects with normal renal function, no difference in the risk of S/SE was observed, whereas the risk of major bleeding was slightly lower for subjects taking NOACs (RR 0.87, 95% confidence interval [CI] 0.76 to 0.99). In subjects with mild or moderate renal impairment, NOACs were associated with a reduced risk of S/SE (RR 0.75, 95% CI 0.66 to 0.85 and RR 0.80, 95% CI 0.68 to 0.94, respectively) and major bleeding (RR 0.87, 95% CI 0.79 to 0.95 and RR 0.80, 95% CI 0.71 to 0.91, respectively) compared to warfarin. The pooled analysis for major bleeding demonstrated significant heterogeneity. In conclusion, the use of NOACs was associated with a reduced risk of S/SE and reduced risk of major bleeding compared to warfarin in subjects with mild or moderate renal impairment suggesting a favorable risk profile of these agents in patients with renal disease.
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