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Lenard A, Hermann SA, Stoll F, Burhenne J, Foerster KI, Mikus G, Meid AD, Haefeli WE, Blank A. Effect of Clarithromycin, a Strong CYP3A and P-glycoprotein Inhibitor, on the Pharmacokinetics of Edoxaban in Healthy Volunteers and the Evaluation of the Drug Interaction with Other Oral Factor Xa Inhibitors by a Microdose Cocktail Approach. Cardiovasc Drugs Ther 2024; 38:747-756. [PMID: 36870039 PMCID: PMC11266212 DOI: 10.1007/s10557-023-07443-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/17/2023] [Indexed: 03/05/2023]
Abstract
PURPOSE We assessed the differential effect of clarithromycin, a strong inhibitor of cytochrome P450 (CYP) 3A4 and P-glycoprotein, on the pharmacokinetics of a regular dose of edoxaban and on a microdose cocktail of factor Xa inhibitors (FXaI). Concurrently, CYP3A activity was determined with a midazolam microdose. METHODS In an open-label fixed-sequence trial in 12 healthy volunteers, the pharmacokinetics of a microdosed FXaI cocktail (μ-FXaI; 25 μg apixaban, 50 μg edoxaban, and 25 μg rivaroxaban) and of 60 mg edoxaban before and during clarithromycin (2 x 500 mg/d) dosed to steady-state was evaluated. Plasma concentrations of study drugs were quantified using validated ultra-performance liquid chromatography-tandem mass spectrometry methods. RESULTS Therapeutic clarithromycin doses increased the exposure of a therapeutic 60 mg dose of edoxaban with a geometric mean ratio (GMR) of the area under the plasma concentration-time curve (AUC) of 1.53 (90 % CI: 1.37-1.70; p < 0.0001). Clarithromycin also increased the GMR (90% CI) of the exposure of microdosed FXaI apixaban to 1.38 (1.26-1.51), edoxaban to 2.03 (1.84-2.24), and rivaroxaban to 1.44 (1.27-1.63). AUC changes observed for the therapeutic edoxaban dose were significantly smaller than those observed with the microdose (p < 0.001). CONCLUSION Clarithromycin increases FXaI exposure. However, the magnitude of this drug interaction is not expected to be clinically relevant. The edoxaban microdose overestimates the extent of the drug interaction with the therapeutic dose, whereas AUC ratios for apixaban and rivaroxaban were comparable to the interaction with therapeutic doses as reported in the literature. TRIAL REGISTRATION EudraCT Number: 2018-002490-22.
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Affiliation(s)
- Alexander Lenard
- Department of Clinical Pharmacology and Pharmacoepidemiology, Heidelberg University Hospital, University of Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
- Partner Site Heidelberg, German Center for Infection Research, Heidelberg, Germany
| | - Simon A Hermann
- Department of Clinical Pharmacology and Pharmacoepidemiology, Heidelberg University Hospital, University of Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
- Partner Site Heidelberg, German Center for Infection Research, Heidelberg, Germany
| | - Felicitas Stoll
- Department of Clinical Pharmacology and Pharmacoepidemiology, Heidelberg University Hospital, University of Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
- Partner Site Heidelberg, German Center for Infection Research, Heidelberg, Germany
| | - Juergen Burhenne
- Department of Clinical Pharmacology and Pharmacoepidemiology, Heidelberg University Hospital, University of Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
- Partner Site Heidelberg, German Center for Infection Research, Heidelberg, Germany
| | - Kathrin I Foerster
- Department of Clinical Pharmacology and Pharmacoepidemiology, Heidelberg University Hospital, University of Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
- Partner Site Heidelberg, German Center for Infection Research, Heidelberg, Germany
| | - Gerd Mikus
- Department of Clinical Pharmacology and Pharmacoepidemiology, Heidelberg University Hospital, University of Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
- Partner Site Heidelberg, German Center for Infection Research, Heidelberg, Germany
| | - Andreas D Meid
- Department of Clinical Pharmacology and Pharmacoepidemiology, Heidelberg University Hospital, University of Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
- Partner Site Heidelberg, German Center for Infection Research, Heidelberg, Germany
| | - Walter E Haefeli
- Department of Clinical Pharmacology and Pharmacoepidemiology, Heidelberg University Hospital, University of Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
- Partner Site Heidelberg, German Center for Infection Research, Heidelberg, Germany
| | - Antje Blank
- Department of Clinical Pharmacology and Pharmacoepidemiology, Heidelberg University Hospital, University of Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany.
- Partner Site Heidelberg, German Center for Infection Research, Heidelberg, Germany.
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Yu Y, Li H, Liu J, Liang Q, Xie J, Sun G. Rivaroxaban Plasma Concentration and Clinical Outcomes on Older Patients with Non-valvular Atrial Fibrillation and Pulmonary Infection. Am J Cardiovasc Drugs 2024; 24:129-139. [PMID: 38142441 DOI: 10.1007/s40256-023-00622-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/27/2023] [Indexed: 12/26/2023]
Abstract
INTRODUCTION Infection may induce thrombotic and hemorrhagic events; however, it is currently unclear whether the inflammatory response affects the coagulation function and the clinical efficacy and safety of rivaroxaban in older patients with non-valvular atrial fibrillation (NVAF). OBJECTIVE This project aimed to assess the effectiveness and safety of the non-vitamin K antagonist oral anticoagulant rivaroxaban in older patients with NVAF complicated by infection, and to provide a basis for possible drug dose adjustment. METHODS A total of 152 NVAF patients aged ≥ 65 years admitted to the Fifth People's Hospital of Shanghai from June 2020 to May 2022 were included in this prospective, observational study. The changes in steady-state plasma concentration of rivaroxaban and FXa inhibition rate were compared between patients with and without infection, and the impact on the occurrence of infection, thrombotic events, and bleeding events was compared through 1-year follow-up. RESULTS Our results showed that patients in the infection group had abnormal inflammation markers, as well as an increased occurrence of bleeding and thrombotic events during hospitalization and follow-up. The high incidence of bleeding events in patients was closely related to the occurrence of infection, lymphocyte reduction, and increased neutrophil-lymphocyte ratio. The increase in thrombotic events was related to a decrease in rivaroxaban plasma concentration. Bleeding events in patients taking anticoagulant drugs are not necessarily due to drug accumulation. CONCLUSIONS Timely control of infection, assessment of bleeding and thrombotic risks, and selection of appropriate anticoagulation treatment strategies should be made in older NVAF patients who develop pulmonary infection. CLINICAL TRIALS REGISTRATION Chinese Clinical Trial Registry Number ChiCTR2000033144.
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Affiliation(s)
- Yan Yu
- Department of Pharmacy, Fifth People's Hospital of Shanghai, Shanghai, China
| | - Haobin Li
- Department of Pharmacy, Fifth People's Hospital of Shanghai, Shanghai, China
| | - Jing Liu
- Department of Pharmacy, Fifth People's Hospital of Shanghai, Shanghai, China
| | - Qing Liang
- Department of Pharmacy, Fifth People's Hospital of Shanghai, Shanghai, China
| | - Juan Xie
- Department of General Practice, Fifth People's Hospital of Shanghai, Shanghai, China.
| | - Guangchun Sun
- Department of Pharmacy, Fifth People's Hospital of Shanghai, Shanghai, China.
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Sugimoto M, Murata M, Kawai T. Assessment of delayed bleeding after endoscopic submucosal dissection of early-stage gastrointestinal tumors in patients receiving direct oral anticoagulants. World J Gastroenterol 2023; 29:2916-2931. [PMID: 37274799 PMCID: PMC10237096 DOI: 10.3748/wjg.v29.i19.2916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 04/03/2023] [Accepted: 04/24/2023] [Indexed: 05/16/2023] Open
Abstract
Delayed bleeding is a major and serious adverse event of endoscopic submucosal dissection (ESD) for early-stage gastrointestinal tumors. The rate of post-ESD bleeding for gastric cancer is higher (around 5%-8%) than that for esophagus, duodenum and colon cancer (around 2%-4%). Although investigations into the risk factors for post-ESD bleeding have identified several procedure-, lesion-, physician- and patient-related factors, use of antithrombotic drugs, especially anticoagulants [direct oral anticoagulants (DOACs) and warfarin], is thought to be the biggest risk factor for post-ESD bleeding. In fact, the post-ESD bleeding rate in patients receiving DOACs is 8.7%-20.8%, which is higher than that in patients not receiving anticoagulants. However, because clinical guidelines for management of ESD in patients receiving DOACs differ among countries, it is necessary for endoscopists to identify ways to prevent post-ESD delayed bleeding in clinical practice. Given that the pharmacokinetics (e.g., plasma DOAC level at both trough and Tmax) and pharmacodynamics (e.g., anti-factor Xa activity) of DOACs are related to risk of major bleeding, plasma DOAC level and anti-FXa activity may be useful parameters for monitoring the anti-coagulate effect and identifying DOAC patients at higher risk of post-ESD bleeding.
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Affiliation(s)
- Mitsushige Sugimoto
- Department of Gastroenterological Endoscopy, Tokyo Medical University Hospital, Tokyo 160-0023, Japan
| | - Masaki Murata
- Department of Gastroenterology, National Hospital Organization Kyoto Medical Center, Kyoto 612-8555, Japan
| | - Takashi Kawai
- Department of Gastroenterological Endoscopy, Tokyo Medical University Hospital, Tokyo 160-0023, Japan
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Shurrab M, Jackevicius CA, Austin PC, Tu K, Qiu F, Singh SM, Crystal E, Caswell J, Michael F, Andrade JG, Ko DT. Association Between Concurrent Use of Amiodarone and DOACs and Risk of Bleeding in Patients With Atrial Fibrillation. Am J Cardiol 2023; 186:58-65. [PMID: 36343447 DOI: 10.1016/j.amjcard.2022.10.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/04/2022] [Accepted: 10/13/2022] [Indexed: 11/06/2022]
Abstract
Amiodarone is a commonly used pharmacotherapy in patients with atrial fibrillation (AF), with a potential for drug-drug interactions with direct oral anticoagulants (DOACs). We aimed to assess the bleeding risk after co-prescription of amiodarone and DOACs among adults with AF. We conducted a population-based, nested case-control study in Ontario, Canada. The study population included all patients with AF aged >66 years on a DOAC between April 1, 2011 and March 31, 2018. Cases were patients admitted with major bleeding (index date). Controls were matched in a 2:1 ratio to cases. We categorized exposure to amiodarone before the index date as: (1) current users (amiodarone within 60 days), (2) past users (amiodarone within 61 to 140 days), and (3) unexposed (no amiodarone prescription or amiodarone prescription >140 days before index date). Conditional logistic regression models were used to examine the association between bleeding and amiodarone co-prescription. Among 86,679 patients with AF on a DOAC, we identified 2,766 cases (3.2%) admitted with major bleeding. The median age of patients with AF was 80 years (interquartile range 75 to 85); 48.3% were women. After multivariable adjustment, there was a significant association between major bleeding and current use of amiodarone (adjusted odds ratio 1.53; 95% confidence interval 1.24 to 1.89, p <0.001) but no significant association between major bleeding and past use of amiodarone (adjusted odds ratio 1.13, 95% confidence interval 0.76 to 1.68, p = 0.545) compared with the unexposed group. In conclusion, among older patients with AF on a DOAC, there was 53% increased odds of major bleeding with the current use of amiodarone.
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Affiliation(s)
- Mohammed Shurrab
- Cardiology Department, Health Sciences North, Northern Ontario School of Medicine, Sudbury, Ontario, Canada; Health Sciences North Research Institute, Sudbury, Ontario, Canada; Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada; ICES, Toronto, Ontario, Canada.
| | - Cynthia A Jackevicius
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada; ICES, Toronto, Ontario, Canada; Department of Pharmacy Practice and Administration, College of Pharmacy, Western University of Health Sciences, Pomona, California; Pharmacy Department, VA Greater Los Angeles Healthcare System, California
| | - Peter C Austin
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada; ICES, Toronto, Ontario, Canada
| | - Karen Tu
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada; North York General Hospital, Toronto, Ontario, Canada; Department of Family and Community Medicine, University of Toronto, Toronto, Ontario, Canada; University Health Network-Toronto Western Hospital Family Health Team, Toronto, Ontario, Canada
| | | | - Sheldon M Singh
- Division of Cardiology, Schulich Heart Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - Eugene Crystal
- Division of Cardiology, Schulich Heart Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - Joseph Caswell
- Health Sciences North Research Institute, Sudbury, Ontario, Canada; ICES, Toronto, Ontario, Canada
| | - Faith Michael
- Cardiology Department, Health Sciences North, Northern Ontario School of Medicine, Sudbury, Ontario, Canada
| | - Jason G Andrade
- Heart Rhythm Services, Department of Medicine, University of British Columbia, Vancouver, Canada; Center for Cardiovascular Innovation, Vancouver, Canada
| | - Dennis T Ko
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada; ICES, Toronto, Ontario, Canada; Division of Cardiology, Schulich Heart Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
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Association between concurrent use of diltiazem and DOACs and risk of bleeding in atrial fibrillation patients. J Interv Card Electrophysiol 2022; 66:629-635. [PMID: 36149579 DOI: 10.1007/s10840-022-01355-1] [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] [Received: 07/13/2022] [Accepted: 08/20/2022] [Indexed: 10/14/2022]
Abstract
BACKGROUND Diltiazem is a commonly used medication in patients with atrial fibrillation (AF) with potential for a drug-drug interaction (DDI) with direct oral anticoagulants (DOACs). We aimed to assess the risk of major bleeding after co-prescription of diltiazem and DOACs among adults with AF. METHODS We conducted a population-based, nested case-control study in Ontario, Canada. The study population included all patients with AF > 66 years on a DOAC between April 1, 2011, and March 31, 2018. Cases were patients admitted with major bleeding (index date). Each case was matched to two controls. We categorized exposure to diltiazem before the index date as: (a) current users (diltiazem use within 7 days); (b) recent users (diltiazem use within 8 to 90 days); and (c) unexposed (no diltiazem prescription or diltiazem prescription > 90 days before index date). Conditional logistic regression models were used to examine the association between bleeding and diltiazem co-prescription. RESULTS Among 86,679 AF patients on a DOAC, the median age of AF patients was 80 years (interquartile range 75-85); 48.3% were women. We identified 2,766 cases (3.2%) who were hospitalized with major bleeding. After multivariable adjustment, there was a significant association between major bleeding and current use of diltiazem (adjusted odds ratio (aOR) 1.37; 95% confidence interval (CI) 1.08-1.73, p < 0.009) but no significant association between major bleeding and recent use of diltiazem (aOR 1.19, 95% CI 0.99-1.42, p = 0.06) as compared with the unexposed group. CONCLUSIONS Current use of diltiazem was associated with major bleeding among AF patients receiving a DOAC.
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Chadha A, Guirguis M, Bungard TJ. DOAC drug interactions management resource. Can Pharm J (Ott) 2022; 155:315-325. [PMID: 36386604 PMCID: PMC9647398 DOI: 10.1177/17151635221116100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Micheal Guirguis
- Faculty of Pharmacy and Pharmaceutical Sciences
- Department of Medicine, University of Alberta and Pharmacy Services, Drug Utilization and Stewardship, Alberta Health Services, Edmonton, Alberta
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Ahmed H, Whitaker H, Farewell D, Hippisley-Cox J, Noble S. Respiratory tract infection and risk of bleeding in oral anticoagulant users: self-controlled case series. BMJ 2021; 375:e068037. [PMID: 34933893 PMCID: PMC8689396 DOI: 10.1136/bmj-2021-068037] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To estimate the association between untreated, community acquired, respiratory tract infections and bleeding in oral anticoagulant users. DESIGN Self-controlled case series. SETTING General practices in England contributing data to the Clinical Practice Research Datalink GOLD. PARTICIPANTS 1208 adult users of warfarin or direct oral anticoagulants with a general practice or hospital admission record of a bleeding event between January 2010 and December 2019, and a general practice record of a consultation for a community acquired respiratory tract infection for which immediate antibiotics were not prescribed (that is, untreated). MAIN OUTCOME MEASURES Relative incidence of major bleeding and clinically relevant non-major bleeding in the 0-14 days after an untreated respiratory tract infection, compared to unexposed time periods. RESULTS Of 1208 study participants, 58% (n=701) were male, median age at time of first bleed was 79 years (interquartile range 72-85), with a median observation period of 2.4 years (interquartile range 1.3-3.8). 292 major bleeds occurred during unexposed time periods and 41 in the 0-14 days after consultation for a respiratory tract infection. 1003 clinically relevant non-major bleeds occurred during unexposed time periods and 81 in the 0-14 days after consultation for a respiratory tract infection. After adjustment for age, season, and calendar year, the relative incidence of major bleeding (incidence rate ratio 2.68, 95% confidence interval 1.83 to 3.93) and clinically relevant non-major bleeding (2.32, 1.82 to 2.94) increased in the 0-14 days after an untreated respiratory tract infection. Findings were robust to several sensitivity analyses and did not differ by sex or type of oral anticoagulant. CONCLUSIONS This study observed a greater than twofold increase in the risk of bleeding during the 0-14 days after an untreated respiratory tract infection. These findings have potential implications for how patients and clinicians manage oral anticoagulant use during an acute intercurrent illness and warrant further investigation into the potential risks and how they might be mitigated.
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Affiliation(s)
- Haroon Ahmed
- Division of Population Medicine, Cardiff University School of Medicine, Cardiff, UK
| | | | - Daniel Farewell
- Division of Population Medicine, Cardiff University School of Medicine, Cardiff, UK
| | - Julia Hippisley-Cox
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
| | - Simon Noble
- Division of Population Medicine, Cardiff University School of Medicine, Cardiff, UK
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Ersoy İ. Novel Drug Interaction index and Risk of Mortality in Older Patients With Atrial Fibrillation Receiving Non Vitamin K Oral Anticoagulants (NOEL Drug). Clin Appl Thromb Hemost 2021; 27:10760296211038685. [PMID: 34541922 PMCID: PMC8642067 DOI: 10.1177/10760296211038685] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Drug interactions with novel oral anticoagulants (NOACs) may decrease their
advantages. We aimed to explore the drug interaction rates with NOACs and
impacts of drug interaction index (DII) on mortality among older patients with
atrial fibrillation (AF). In this retrospective cohort study, we enrolled 704
eligible patients aged 65≤ with AF between January 1, 2018 and December 30, 2019
in a tertiary outpatient cardiology clinic. We recorded demographic, clinical
characteristics, and medications for the last 3 months. At the end of the
evaluation visit (March 1, 2020), death events and dates were recorded. All
medications were checked for drug interactions using Lexicomp® software. Each
drug interaction was annotated according to risk grade. Moreover, we determined
a new index ratio of C/D/X classes to total interactions called DII. The mean
age was 75.19 ± 7.13 and 398 (56%) were male. Death events were observed in
106 (15%) patients. A total of 9883 drugs were analyzed for drug interactions.
The majority of drug interactions were in class A (80.7%). Clinically relevant
interactions were 14.6% (Class C/D/X). The area under receiver operating
characteristic curve was 0.704 (95% confidence interval: 0.653-0.754) and 0.167
cutoff value (68.9% sensitivity and 80.2% specificity [3.11 positive likelihood
ratio]) for DII to predict mortality. This study showed an overview of the NOACs
interactions in older patients with AF. Additionally, the inappropriate NOAC
dose and DII showed an association with mortality. NOAC treatment should be
guided by drug interaction applications to reduce mortality.
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Affiliation(s)
- İbrahim Ersoy
- 534521Afyonkarahisar Health Sciences University, Afyonkarahisar, Turkey
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Brazeale HS, Fuentes A, Adeola M. Analysis of Direct Oral Anticoagulant Therapy With Concomitant Use of Interacting Antiretroviral Agents. J Pharm Pract 2021; 36:286-294. [PMID: 34392711 DOI: 10.1177/08971900211034258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background: A theoretical interaction exists between human immunodeficiency virus (HIV) antiretroviral (ARV) agents and direct oral anticoagulants (DOACs), although the clinical significance is unclear. Objective: This study aimed to assess characteristics, prescribing patterns, and outcomes associated with concomitant therapy. Methods: A single-center, retrospective review was performed on patients older than 18 years prescribed a DOAC for any indication with concurrent interacting ARV(s) from June 2016 through June 2019. The primary endpoint was to assess prescribing and population characteristics. Secondary endpoints were to evaluate safety outcomes, DOAC level monitoring, readmissions, outpatient follow-up, and DOAC modification interventions. Results: Thirty-six patients (72 hospital admissions) were identified. The most common DOAC was apixaban (83.3%) and ARV was ritonavir (50%). Of the 72 encounters, 26 (36.1%) DOACs were dosed appropriately per guideline recommendations. Twenty pharmacy interventions for therapy modification were recognized. Eleven (30.6%) patients experienced bleeding and 2 (5.6%) thrombosis. Of the adverse events, all patients had renal impairment. Conclusions: As DOAC utilization grows, increasing use in HIV could be expected. More frequent adjustment or avoidance is recommended per guidelines. Our data suggest the majority of patients receive CYP3A4-inhibiting regimens. Caution should be employed with renal insufficiencies. Further studies are warranted to assess safety and efficacy within this population.
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Affiliation(s)
- Hayley S Brazeale
- Internal Medicine Clinical Pharmacy Specialist, Department of Pharmacy, 23534Houston Methodist Hospital, Houston, TX, USA
| | - Amaris Fuentes
- System Medication Safety Specialist, System Quality and Patient Safety, 23534Houston Methodist Hospital, Houston, TX, USA
| | - Mobolaji Adeola
- Medication Safety Specialist, Department of Pharmacy, 23534Houston Methodist Hospital, Houston, TX, USA
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Gronich N, Stein N, Muszkat M. Association Between Use of Pharmacokinetic-Interacting Drugs and Effectiveness and Safety of Direct Acting Oral Anticoagulants: Nested Case-Control Study. Clin Pharmacol Ther 2021; 110:1526-1536. [PMID: 34287842 PMCID: PMC9290518 DOI: 10.1002/cpt.2369] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 06/29/2021] [Indexed: 12/29/2022]
Abstract
Concomitant use of direct oral anticoagulants (DOACs) and medications with inhibition/induction effect on P-gp/CYP3A might increase risk of bleeding/treatment failure, respectively. We designed a nested case-control study within a Clalit cohort of patients with atrial fibrillation (AF) and a cohort of patients with venous thromboembolism, new users of a DOAC (January 1, 2010 to August 24, 2020). Propensity scores were constructed from demographic/clinical characteristics, and medications at cohort entry. Each case of: (i) serious bleeding event; (ii) stroke/systemic emboli (SE) in patients with AF; (iii) recurrent thromboembolism in patients with thromboembolism, was matched by age, sex, length of follow-up, year of cohort entry, DOAC type, and DOAC indication, to up to 20 controls. Within 89,284 patients with AF and venous thromboembolism and 126,302 patient-years of follow-up, there were 1,587 serious bleeding events. Risk of serious bleeding increased in association with concurrent prescription of P-gp/CYP3A4 inhibitors. Specifically, higher bleeding risk was associated with dabigatran-verapamil, rivaroxaban-verapamil, and rivaroxaban-amiodarone concurrent prescriptions: adjusted odds ratios (ORs) 2.29 (1.13-4.60), 2.18 (1.07-4.40), and 1.68 (1.14-2.49), respectively. There were 1,116 events of stroke/SE, in 79,302 DOAC-treated patients with AF and 118,124 patient-years of follow-up. Concomitant use of phenytoin, carbamazepine, valproic acid, or levetiracetam was associated with risk for stroke/SE: adjusted OR 2.18 (1.55-3.10). Risk of recurrent venous thromboembolism could not be assessed due to the low number of cases. Concurrent prescriptions of dabigatran or rivaroxaban with verapamil, and of rivaroxaban with amiodarone, are associated with increased risk for serious bleeding. Higher risk for stroke/SE in patients with AF is associated with concurrent prescriptions of DOACs with phenytoin, carbamazepine, valproic acid, or levetiracetam.
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Affiliation(s)
- Naomi Gronich
- Department of Community Medicine and Epidemiology, Lady Davis Carmel Medical Center, Clalit Health Services, Haifa, Israel.,Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Nili Stein
- Department of Community Medicine and Epidemiology, Lady Davis Carmel Medical Center, Clalit Health Services, Haifa, Israel
| | - Mordechai Muszkat
- Department of Medicine, Hadassah Hebrew University Medical Center, Jerusalem, Israel.,Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
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Shurrab M, Koh M, Jackevicius CA, Qiu F, Conlon M, Caswell J, Tu K, Austin PC, Ko DT. Prescribing of two potentially interacting cardiovascular medications in atrial fibrillation patients on direct oral anticoagulants. IJC HEART & VASCULATURE 2021; 34:100788. [PMID: 33997261 PMCID: PMC8105295 DOI: 10.1016/j.ijcha.2021.100788] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/04/2021] [Accepted: 04/19/2021] [Indexed: 11/20/2022]
Abstract
BACKGROUND Amiodarone and diltiazem are commonly recommended cardiovascular medications for use in atrial fibrillation (AF) patients. They are known to have drug-drug interactions (DDIs) with direct oral anticoagulants (DOACs). We aimed to evaluate frequency of use of amiodarone or diltiazem among continuous users of DOACs in AF patients and to determine factors associated with their co-use. METHODS The study population included all AF patients with continuous DOAC use in Ontario, Canada, ≥66 years, from April 1, 2017 to March 31, 2018. Concurrent use of amiodarone or diltiazem was determined by identifying the presence of an overlapping prescription. Multivariable logistic regression models were used to identify predictors of amiodarone or diltiazem use. RESULTS In total, 5,390 AF patients, ≥66 years, with continuous DOAC use were identified. Amiodarone was co-prescribed in 6.4% patients and diltiazem was co-prescribed in 11.2% patients. Prior percutaneous coronary intervention (PCI) and coronary artery bypass surgery (CABG) were associated with significantly increased odds of amiodarone co-use (OR 2.51 [95% CI 1.54, 4.09], p = 0.0002 and OR 5.28 [95% CI 3.52, 7.93], p= <0.001, respectively). Patients with a heart failure (HF) history also had increased co-use of amiodarone (OR 2.05 [95% CI 1.57, 2.67], p < 0.001). The presence of chronic obstructive pulmonary disease (COPD) was associated with significantly increased odds of diltiazem co-use (OR 1.58 [95% CI 1.31, 1.9], p=<0.001). CONCLUSIONS Among AF patients with continuous DOAC use, amiodarone was co-prescribed in 1 in 16 patients and diltiazem was co-prescribed in 1 in 9 patients. Predictors such as history of HF, PCI, CABG or COPD help identify vulnerable populations at increased risk of DDIs.
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Affiliation(s)
- Mohammed Shurrab
- Cardiology Department, Health Sciences North, Northern Ontario School of Medicine, Laurentian University, Sudbury, Ontario, Canada
- Health Sciences North Research Institute, Sudbury, Ontario, Canada
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
- ICES, Toronto and North, Ontario, Canada
| | - Maria Koh
- ICES, Toronto and North, Ontario, Canada
| | - Cynthia A. Jackevicius
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
- ICES, Toronto and North, Ontario, Canada
- Veterans Administration Greater Los Angeles Healthcare System, Western University of Health Sciences, Los Angeles, CA, United States
| | - Feng Qiu
- ICES, Toronto and North, Ontario, Canada
| | - Michael Conlon
- Health Sciences North Research Institute, Sudbury, Ontario, Canada
- ICES, Toronto and North, Ontario, Canada
| | - Joseph Caswell
- Health Sciences North Research Institute, Sudbury, Ontario, Canada
- ICES, Toronto and North, Ontario, Canada
| | - Karen Tu
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
- North York General Hospital, Toronto, Ontario, Canada
- Department of Family and Community Medicine, the University of Toronto, Toronto, Ontario, Canada
- University Health Network-Toronto Western Hospital Family Health Team, Toronto, Ontario, Canada
| | - Peter C. Austin
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
- ICES, Toronto and North, Ontario, Canada
| | - Dennis T. Ko
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
- ICES, Toronto and North, Ontario, Canada
- Division of Cardiology, Schulich Heart Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
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12
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Colacci M, Fralick J, Odutayo A, Fralick M. Sodium-Glucose Cotransporter-2 Inhibitors and Risk of Diabetic Ketoacidosis Among Adults With Type 2 Diabetes: A Systematic Review and Meta-Analysis. Can J Diabetes 2021; 46:10-15.e2. [PMID: 34116926 DOI: 10.1016/j.jcjd.2021.04.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 04/16/2021] [Accepted: 04/19/2021] [Indexed: 11/25/2022]
Abstract
OBJECTIVES The magnitude and precision regarding the risk of diabetic ketoacidosis (DKA) with sodium-glucose cotransporter-2 (SGLT2) inhibitors is unclear. Thus, we examined the risk of DKA with SGLT2 inhibitors in both observational studies and large clinical trials. METHODS Searches were performed in PubMed, Embase, CENTRAL and Google Scholar (from inception to April 15, 2019) without language restrictions, including conference proceedings and reference lists. Study selection consisted of randomized controlled trials and observational studies that quantified the rate of DKA with an SGLT2 inhibitor in comparison to other diabetes medications or placebo. Two independent investigators abstracted the study data and assessed the quality of evidence. Data were pooled using random effects models with the Hartung-Knapp-Sidik-Jonkman method. Absolute event rates and hazard ratios for DKA were extracted from each study. RESULTS Seven randomized trials encompassing 42,375 participants and 5 cohort studies encompassing 318,636 participants were selected. Among the 7 randomized controlled trials, the absolute rate of DKA among patients randomized to an SGLT2 inhibitor ranged from 0.6 to 2.2 events per 1,000 person years. Four randomized trials were included in the meta-analysis and, compared with placebo or comparator medication, SGLT2 inhibitors had a 2.5-fold higher risk of DKA (relative risk [RR], 2.46; 95% confidence interval [CI], 1.16 to 5.21]; I2=0%; p=0.54). Among the 5 observational studies, the absolute rate of DKA associated with SGLT2 inhibitor use ranged from 0.6 to 4.9 per 1,000 person years and a 1.7-fold higher rate of DKA compared with another diabetes medication (RR, 1.74; 95% CI, 1.07 to 2.83; I2=45%; p=0.12). CONCLUSIONS In adults with type 2 diabetes, SGLT2 inhibitors were found to increase the risk of DKA in both observational studies and large randomized clinical trials.
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Affiliation(s)
- Michael Colacci
- Department of Medicine, Sinai Health System and the University of Toronto, Toronto, Ontario, Canada; Department of Medicine, General Internal Medicine, University of Toronto, Toronto, Ontario, Canada.
| | - John Fralick
- Applied Health Research Centre, Li Ka Shing Knowledge Institute of St. Michael's Hospital, Department of Medicine and Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
| | - Ayodele Odutayo
- Department of Medicine, General Internal Medicine, University of Toronto, Toronto, Ontario, Canada; Department of Medicine, General Internal Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Michael Fralick
- Department of Medicine, Sinai Health System and the University of Toronto, Toronto, Ontario, Canada; Department of Medicine, General Internal Medicine, University of Toronto, Toronto, Ontario, Canada
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13
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Drug-Drug Interactions Leading to Adverse Drug Reactions with Rivaroxaban: A Systematic Review of the Literature and Analysis of VigiBase. J Pers Med 2021; 11:jpm11040250. [PMID: 33808367 PMCID: PMC8066515 DOI: 10.3390/jpm11040250] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 03/25/2021] [Accepted: 03/26/2021] [Indexed: 12/27/2022] Open
Abstract
Rivaroxaban has become an alternative to vitamin K antagonists, which are considered to be at higher risk of drug-drug interactions (DDI) and more difficult to use. However, DDI do occur. We systematically reviewed studies that evaluated them and analysed DDI and subsequent adverse drug reactions (ADR) reported in spontaneous reports and VigiBase. We systematically searched articles that explored DDI with rivaroxaban up to 20 August 2018 via Medline, Embase and Google Scholar. Data from VigiBase came from spontaneous reports recovered up to 2 January 2018, where Omega was used to detect signals and identify potential interactions in terms of triplets with two drugs and one ADR. We identified 31 studies and 28 case reports. Studies showed significant variation in the pharmacokinetic for rivaroxaban, and an increased risk of haemorrhage or thromboembolic events due to DDI was highlighted in case reports. From VigiBase, a total of 21,261 triplets were analysed and the most reported was rivaroxaban–aspirin–gastrointestinal haemorrhage. In VigiBase, only 34.8% of the DDI reported were described or understood, and most were pharmacodynamic DDI. These data suggest that rivaroxaban should be considered to have significant potential for DDI, especially with CYP3A/P-gp modulators or with drugs that impair haemostasis.
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14
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Li A, Li MK, Crowther M, Vazquez SR. Drug-drug interactions with direct oral anticoagulants associated with adverse events in the real world: A systematic review. Thromb Res 2020; 194:240-245. [PMID: 33213849 PMCID: PMC7417902 DOI: 10.1016/j.thromres.2020.08.016] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 07/27/2020] [Accepted: 08/06/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND Direct oral anticoagulants (DOACs) have emerged as safe and effective alternatives to Vitamin-K antagonists for treatment and prevention of arterial and venous thrombosis. Due to their novelty, pharmacokinetic DOAC drug-drug interactions (DDIs) that result in clinical adverse events have not been well-documented. OBJECTIVE This study aims to systematically review reported pharmacokinetic DDIs resulting in clinical adverse events through documented observational evidence to better inform clinicians in clinical practice. METHODS A comprehensive literature review of EMBASE, MEDLINE, and Ovid HealthStar was conducted through March 10th, 2020. Two independent reviewers screened and extracted data from eligible articles according to pre-established inclusion and exclusion criteria. Articles reporting bleeding or thrombotic outcomes in non-controlled (observational) settings resulting from suggested pharmacokinetic DOAC DDIs were included. RESULTS A total of 5567 citations were reviewed, of which 24 were included following data extraction. The majority were case reports (n = 21) documenting a single adverse event resulting from a suspected DOAC DDI, while the remaining papers were a case series (n = 1) and cohort studies (n = 2). The most commonly reported interacting drugs were amiodarone and ritonavir (bleeding), and phenobarbital, phenytoin, and carbamazepine (thrombosis). Bleeding events more often resulted from a combined mechanism (P-glycoprotein AND CYP3A4 inhibition), whereas thrombotic events resulted from either combined OR single P-glycoprotein/CYP3A4 induction. CONCLUSION Current literature evaluating the real-world risk of DOAC DDIs is limited to few case reports and retrospective observational analyses. Clinicians are encouraged to continue to report suspected drug interactions resulting in adverse events.
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Affiliation(s)
- Allen Li
- University of Ottawa, Faculty of Medicine, Ottawa, ON, Canada.
| | - Ming K. Li
- University of Toronto, Faculty of Medicine, Toronto, ON, Canada
| | - Mark Crowther
- Division of Hematology & Thromboembolism, Department of Medicine, McMaster University, Hamilton, ON, Canada.
| | - Sara R. Vazquez
- Department of Pharmacy Services, Thrombosis Service, University of Utah Health, Salt Lake City, UT, United States
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15
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Hill K, Sucha E, Rhodes E, Carrier M, Garg AX, Harel Z, Hundemer GL, Clark EG, Knoll G, McArthur E, Sood MM. Risk of Hospitalization With Hemorrhage Among Older Adults Taking Clarithromycin vs Azithromycin and Direct Oral Anticoagulants. JAMA Intern Med 2020; 180:1052-1060. [PMID: 32511684 PMCID: PMC7281381 DOI: 10.1001/jamainternmed.2020.1835] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
IMPORTANCE Clarithromycin is a commonly prescribed antibiotic associated with higher levels of direct oral anticoagulants (DOACs) in the blood, with the potential to increase the risk of hemorrhage. OBJECTIVE To assess the 30-day risk of a hospital admission with hemorrhage after coprescription of clarithromycin compared with azithromycin among older adults taking a DOAC. DESIGN, SETTING, AND PARTICIPANTS This population-based, retrospective cohort study was conducted among adults of advanced age (mean [SD] age, 77.6 [7.2] years) who were newly coprescribed clarithromycin (n = 6592) vs azithromycin (n = 18 351) while taking a DOAC (dabigatran, apixaban, or rivaroxaban) in Ontario, Canada, from June 23, 2009, to December 31, 2016. Cox proportional hazards regression was used to examine the association between hemorrhage and antibiotic use (clarithromycin vs azithromycin). Statistical analysis was performed from December 23, 2019, to March 25, 2020. MAIN OUTCOMES AND MEASURES Hospital admission with major hemorrhage (upper or lower gastrointestinal tract or intracranial). Outcomes were assessed within 30 days of a coprescription. RESULTS Among the 24 943 patients (12 493 women; mean [SD] age, 77.6 [7.2] years) in the study, rivaroxaban was the most commonly prescribed DOAC (9972 patients [40.0%]), followed by apixaban (7953 [31.9%]) and dabigatran (7018 [28.1%]). Coprescribing clarithromycin vs azithromycin with a DOAC was associated with a higher risk of a hospital admission with major hemorrhage (51 of 6592 patients [0.77%] taking clarithromycin vs 79 of 18 351 patients [0.43%] taking azithromycin; adjusted hazard ratio, 1.71 [95% CI, 1.20-2.45]; absolute risk difference, 0.34%). Results were consistent in multiple additional analyses. CONCLUSIONS AND RELEVANCE This study suggests that, among adults of advanced age taking a DOAC, concurrent use of clarithromycin compared with azithromycin was associated with a small but statistically significantly greater 30-day risk of hospital admission with major hemorrhage.
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Affiliation(s)
- Kevin Hill
- Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Ewa Sucha
- Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada
| | - Emily Rhodes
- Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada
| | - Marc Carrier
- Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Amit X Garg
- Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada.,Division of Nephrology, Department of Medicine, Health Sciences Centre, London, Ontario, Canada.,Epidemiology and Biostatistics, Western University, London, Ontario, Canada
| | - Ziv Harel
- Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada.,Division of Nephrology, Department of Medicine, St Michael's Hospital, Toronto, Canada
| | - Gregory L Hundemer
- Division of Nephrology, Department of Medicine, The Ottawa Hospital, Ottawa, Ontario, Canada
| | - Edward G Clark
- Division of Nephrology, Department of Medicine, The Ottawa Hospital, Ottawa, Ontario, Canada
| | - Greg Knoll
- Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada.,Division of Nephrology, Department of Medicine, The Ottawa Hospital, Ottawa, Ontario, Canada
| | - Eric McArthur
- Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada
| | - Manish M Sood
- Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada.,Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada.,Division of Nephrology, Department of Medicine, The Ottawa Hospital, Ottawa, Ontario, Canada.,Ottawa Hospital Research Institute, The Ottawa Hospital, Ottawa, Ontario, Canada
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16
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Alidoost M, Soomro R, Gubeladze A, Morabia A, Holland S, Asif A, Hossain MA. Rivaroxaban Related Bilateral Adrenal Hemorrhage: A Rare Complications of Direct Oral Anticoagulants - A Case Reports. AMERICAN JOURNAL OF CASE REPORTS 2019; 20:1607-1611. [PMID: 31676747 PMCID: PMC6849691 DOI: 10.12659/ajcr.917780] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Accepted: 08/13/2019] [Indexed: 11/21/2022]
Abstract
BACKGROUND Adrenal hemorrhage is an uncommon and under-recognized disorder with a wide array of etiologies ranging from pregnancy to septic shock. It is one of the complications of anticoagulation therapy, including direct anticoagulant medications. CASE REPORT Here, we present a case of a 68-year-old female with recent right knee arthroplasty who was on rivaroxaban for deep vein thrombosis (DVT) prophylaxis presented to the emergency department (ED) for severe acute onset abdominal pain, computed tomography (CT) of abdomen and pelvis revealed possible left adrenal hemorrhage that was confirmed with magnetic resonance imaging (MRI). On repeat CT, her unilateral adrenal hemorrhage converted to a bilateral adrenal hemorrhage (BAH) and, as a result, the patient developed adrenal insufficiency. CONCLUSIONS An undiagnosed and untreated adrenal hemorrhage can have catastrophic consequences, leading to adrenal insufficiency with potential shock and death. Therefore, it is important for clinicians to have an increased awareness and knowledge about adrenal hemorrhage.
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17
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Chang SH, Chou IJ, Yeh YH, Chiou MJ, Wen MS, Kuo CT, See LC, Kuo CF. Association Between Use of Non-Vitamin K Oral Anticoagulants With and Without Concurrent Medications and Risk of Major Bleeding in Nonvalvular Atrial Fibrillation. JAMA 2017; 318:1250-1259. [PMID: 28973247 PMCID: PMC5818856 DOI: 10.1001/jama.2017.13883] [Citation(s) in RCA: 252] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
IMPORTANCE Non-vitamin K oral anticoagulants (NOACs) are commonly prescribed with other medications that share metabolic pathways that may increase major bleeding risk. OBJECTIVE To assess the association between use of NOACs with and without concurrent medications and risk of major bleeding in patients with nonvalvular atrial fibrillation. DESIGN, SETTING, AND PARTICIPANTS Retrospective cohort study using data from the Taiwan National Health Insurance database and including 91 330 patients with nonvalvular atrial fibrillation who received at least 1 NOAC prescription of dabigatran, rivaroxaban, or apixaban from January 1, 2012, through December 31, 2016, with final follow-up on December 31, 2016. EXPOSURES NOAC with or without concurrent use of atorvastatin; digoxin; verapamil; diltiazem; amiodarone; fluconazole; ketoconazole, itraconazole, voriconazole, or posaconazole; cyclosporine; erythromycin or clarithromycin; dronedarone; rifampin; or phenytoin. MAIN OUTCOMES AND MEASURES Major bleeding, defined as hospitalization or emergency department visit with a primary diagnosis of intracranial hemorrhage or gastrointestinal, urogenital, or other bleeding. Adjusted incidence rate differences between person-quarters (exposure time for each person during each quarter of the calendar year) of NOAC with or without concurrent medications were estimated using Poisson regression and inverse probability of treatment weighting using the propensity score. RESULTS Among 91 330 patients with nonvalvular atrial fibrillation (mean age, 74.7 years [SD, 10.8]; men, 55.8%; NOAC exposure: dabigatran, 45 347 patients; rivaroxaban, 54 006 patients; and apixaban, 12 886 patients), 4770 major bleeding events occurred during 447 037 person-quarters with NOAC prescriptions. The most common medications co-prescribed with NOACs over all person-quarters were atorvastatin (27.6%), diltiazem (22.7%), digoxin (22.5%), and amiodarone (21.1%). Concurrent use of amiodarone, fluconazole, rifampin, and phenytoin with NOACs had a significant increase in adjusted incidence rates per 1000 person-years of major bleeding than NOACs alone: 38.09 for NOAC use alone vs 52.04 for amiodarone (difference, 13.94 [99% CI, 9.76-18.13]); 102.77 for NOAC use alone vs 241.92 for fluconazole (difference, 138.46 [99% CI, 80.96-195.97]); 65.66 for NOAC use alone vs 103.14 for rifampin (difference, 36.90 [99% CI, 1.59-72.22); and 56.07 for NOAC use alone vs 108.52 for phenytoin (difference, 52.31 [99% CI, 32.18-72.44]; P < .01 for all comparisons). Compared with NOAC use alone, the adjusted incidence rate for major bleeding was significantly lower for concurrent use of atorvastatin, digoxin, and erythromycin or clarithromycin and was not significantly different for concurrent use of verapamil; diltiazem; cyclosporine; ketoconazole, itraconazole, voriconazole, or posaconazole; and dronedarone. CONCLUSIONS AND RELEVANCE Among patients taking NOACs for nonvalvular atrial fibrillation, concurrent use of amiodarone, fluconazole, rifampin, and phenytoin compared with the use of NOACs alone, was associated with increased risk of major bleeding. Physicians prescribing NOAC medications should consider the potential risks associated with concomitant use of other drugs.
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Affiliation(s)
- Shang-Hung Chang
- Cardiovascular Department, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- Center for Big Data Analytics and Statistics, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- School of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - I-Jun Chou
- School of Medicine, Chang Gung University, Taoyuan, Taiwan
- Division of Pediatric Neurology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Yung-Hsin Yeh
- Cardiovascular Department, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- School of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Meng-Jiun Chiou
- Center for Big Data Analytics and Statistics, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Ming-Shien Wen
- Cardiovascular Department, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- School of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chi-Tai Kuo
- Cardiovascular Department, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- School of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Lai-Chu See
- Department of Public Health, College of Medicine and Biostatistics Core Laboratory, Molecular Medicine Research Centre, Chang Gung University, Taoyuan, Taiwan
- Division of Rheumatology, Allergy, and Immunology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Chang-Fu Kuo
- Center for Big Data Analytics and Statistics, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- School of Medicine, Chang Gung University, Taoyuan, Taiwan
- Division of Rheumatology, Allergy, and Immunology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- Division of Rheumatology, Orthopaedics, and Dermatology, School of Medicine, University of Nottingham, Nottingham, United Kingdom
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18
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Stöllberger C. Drug interactions with new oral anticoagulants in elderly patients. Expert Rev Clin Pharmacol 2017; 10:1191-1202. [DOI: 10.1080/17512433.2017.1370369] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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19
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Forbes HL, Polasek TM. Potential drug-drug interactions with direct oral anticoagulants in elderly hospitalized patients. Ther Adv Drug Saf 2017; 8:319-328. [PMID: 29593860 DOI: 10.1177/2042098617719815] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2017] [Accepted: 06/14/2017] [Indexed: 01/17/2023] Open
Abstract
Background To determine the prevalence and nature of potential drug-drug interactions (DDIs) with direct oral anticoagulants (DOACs) in elderly hospitalized patients. Methods This was a retrospective observational study. Inclusion criteria were: aged over 65 years; taking apixaban, rivaroxaban or dabigatran; and admitted to the Repatriation General Hospital between April 2014 and July 2015. A list of clinically relevant 'perpetrator' drugs was compiled from product information, the Australian Medicines Handbook, the Australian National Prescribing Service resources, and local health network guidelines. The prevalence and nature of potential DDIs with DOACs was determined by comparing inpatient drug charts with the list of perpetrator drugs. Results There were 122 patients in the study with a mean age of 82 years. Most patients had nonvalvular atrial fibrillation and were taking DOACs to prevent thrombotic stroke (83%). Overall, 45 patients (37%) had a total of 54 potential DDIs. Thirty-five patients had potential pharmacodynamic DDIs with antidepressants, nonsteroidal anti-inflammatory drugs and antiplatelets (35/122, 29%). Nineteen patients had potential pharmacokinetic DDIs (19/122, 16%). Of these, 68% (13/19) were taking drugs that increase DOAC plasma concentrations (amiodarone, erythromycin, diltiazem or verapamil) and 32% (6/19) were taking drugs that decrease DOAC plasma concentrations (carbamazepine, primidone or phenytoin). There were no cases of patients taking contraindicated interacting drugs. Discussion Potential DDIs with DOACs in elderly hospital inpatients are relatively common, particularly interactions that may increase the risk of bleeding. The risk-benefit ratio of DOACs in elderly patients on polypharmacy should always be carefully considered.
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Affiliation(s)
- Heather L Forbes
- Department of Pharmacy, Repatriation General Hospital, Daw Park, South Australia, 5041, Australia
| | - Thomas M Polasek
- Department of Clinical Pharmacology, Flinders University School of Medicine, Bedford Park, South Australia 5042, and d3 Medicine, a Certara company, Parkville, Victoria, 3052 Australia
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20
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Chiang CE, Okumura K, Zhang S, Chao TF, Siu CW, Wei Lim T, Saxena A, Takahashi Y, Siong Teo W. 2017 consensus of the Asia Pacific Heart Rhythm Society on stroke prevention in atrial fibrillation. J Arrhythm 2017; 33:345-367. [PMID: 28765771 PMCID: PMC5529598 DOI: 10.1016/j.joa.2017.05.004] [Citation(s) in RCA: 126] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 04/29/2017] [Accepted: 05/16/2017] [Indexed: 12/18/2022] Open
Abstract
Atrial fibrillation (AF) is the most common sustained arrhythmia, causing a 2-fold increase in mortality and a 5-fold increase in stroke. The Asian population is rapidly aging, and in 2050, the estimated population with AF will reach 72 million, of whom 2.9 million may suffer from AF-associated stroke. Therefore, stroke prevention in AF is an urgent issue in Asia. Many innovative advances in the management of AF-associated stroke have emerged recently, including new scoring systems for predicting stroke and bleeding risks, the development of non-vitamin K antagonist oral anticoagulants (NOACs), knowledge of their special benefits in Asians, and new techniques. The Asia Pacific Heart Rhythm Society (APHRS) aimed to update the available information, and appointed the Practice Guideline sub-committee to write a consensus statement regarding stroke prevention in AF. The Practice Guidelines sub-committee members comprehensively reviewed updated information on stroke prevention in AF, emphasizing data on NOACs from the Asia Pacific region, and summarized them in this 2017 Consensus of the Asia Pacific Heart Rhythm Society on Stroke Prevention in AF. This consensus includes details of the updated recommendations, along with their background and rationale, focusing on data from the Asia Pacific region. We hope this consensus can be a practical tool for cardiologists, neurologists, geriatricians, and general practitioners in this region. We fully realize that there are gaps, unaddressed questions, and many areas of uncertainty and debate in the current knowledge of AF, and the physician׳s decision remains the most important factor in the management of AF.
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Affiliation(s)
- Chern-En Chiang
- General Clinical Research Center and Division of Cardiology, Taipei Veterans General Hospital and National Yang-Ming University, Taipei, Taiwan
| | - Ken Okumura
- Division of Cardiology, Saiseikai Kumamoto Hospital Cardiovascular Center, Kumamoto, Japan
| | - Shu Zhang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital; National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People׳s Republic of China
| | - Tze-Fan Chao
- Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,Institute of Clinical Medicine, and Cardiovascular Research Center, National Yang-Ming University, Taipei, Taiwan
| | - Chung-Wah Siu
- Cardiology Division, Department of Medicine, The University of Hong Kong, Hong Kong, China
| | - Toon Wei Lim
- National University Heart Centre, National University Hospital, Singapore
| | - Anil Saxena
- Cardiac Pacing & Electrophysiology Center, Fortis Escorts Heart Institute, New Delhi, India
| | - Yoshihide Takahashi
- Department of Cardiovascular Medicine, Tokyo Medical and Dental University, Tokyo, Japan
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