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Meyer BM, Campos JK, Collard de Beaufort JC, Chen I, Khan MW, Amin G, Zarrin DA, Lien BV, Coon AL. Trends in Dual Antiplatelet Therapy Use for Neurointerventional Procedures for the Management of Intracranial Aneurysms. Biomedicines 2023; 11:2234. [PMID: 37626730 PMCID: PMC10452183 DOI: 10.3390/biomedicines11082234] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/30/2023] [Accepted: 08/03/2023] [Indexed: 08/27/2023] Open
Abstract
The use of periprocedural dual antiplatelet therapy (DAPT) has significantly evolved along with innovations in the endovascular management of intracranial aneurysms. Historically, aspirin and clopidogrel have been the most commonly employed regimen due to its safety and efficacy. However, recent studies highlight the importance of tailoring DAPT regimens to individual patient characteristics which may affect clopidogrel metabolism, such as genetic polymorphisms. In the present report, a systematic review of the literature was performed to determine optimal antiplatelet use with flow diverting stents, intracranial stents, intrasaccular devices, and stent-assisted coiling. Studies were analyzed for the number of aneurysms treated, DAPT regimen, and any thromboembolic complications. Based on inclusion criteria, 368 studies were selected, which revealed the increasing popularity of alternative DAPT regimens with the aforementioned devices. Thromboembolic or hemorrhagic complications associated with antiplatelet medications were similar across all medications. DAPT with ticagrelor, tirofiban, or prasugrel are effective and safe alternatives to clopidogrel and do not require enzymatic activation. Further clinical trials are needed to evaluate different antiplatelet regimens with various devices to establish highest-level evidence-based guidelines and recommendations.
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Affiliation(s)
| | - Jessica K. Campos
- Department of Neurological Surgery, University of California Irvine, Orange, CA 92868, USA
| | | | - Ivette Chen
- Harvard University, Cambridge, MA 02138, USA
| | - Muhammad Waqas Khan
- Carondelet Neurological Institute, St. Joseph’s Hospital, Tucson, AZ 85711, USA
| | - Gizal Amin
- Carondelet Neurological Institute, St. Joseph’s Hospital, Tucson, AZ 85711, USA
| | - David A. Zarrin
- School of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Brian V. Lien
- Department of Neurological Surgery, University of California Irvine, Orange, CA 92868, USA
| | - Alexander L. Coon
- Carondelet Neurological Institute, St. Joseph’s Hospital, Tucson, AZ 85711, USA
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2
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Kawai S, Sobajima S, Jinnouchi M, Nakano H, Ohtani H, Sakata M, Adachi T. Efficacy and Safety of Tramadol Hydrochloride Twice-Daily Sustained-Release Bilayer Tablets with an Immediate-Release Component for Chronic Pain Associated with Knee Osteoarthritis: A Randomized, Double-Blind, Placebo-Controlled, Treatment-Withdrawal Study. Clin Drug Investig 2022; 42:403-416. [PMID: 35435639 PMCID: PMC9106645 DOI: 10.1007/s40261-022-01139-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/06/2022] [Indexed: 11/26/2022]
Abstract
Background and Objectives Knee osteoarthritis pain is a chronic form of pain for which conventional non-steroidal anti-inflammatory drugs may provide insufficient analgesia. Twice-daily tramadol hydrochloride (65% sustained-release/35% immediate-release) bilayer tablets are a novel formulation of tramadol developed for managing chronic pain. The objectives of this study were to examine the effectiveness and safety of this formulation in patients with chronic knee osteoarthritis pain. Methods This was a multicenter, randomized, placebo-controlled, double-blind, parallel-group, treatment-withdrawal study. Patients with a reduction in Numeric Rating Scale (NRS) for pain of ≥2 points during a 1–3-week, open-label, tramadol dose-escalation period (100–300 mg/day) were randomized to continue tramadol or switched to placebo for 4 weeks (double-blind period). Patients with inadequate efficacy (increase in NRS ≥2 points/patient request) were withdrawn. Outcomes included the time to inadequate analgesic efficacy from randomization (primary endpoint), the cumulative retention rate, and safety. Results Overall, 249 and 160 patients entered the dose-escalation and double-blind periods, respectively (tramadol 79; placebo 81). Kaplan–Meier analysis revealed superiority of tramadol (log-rank p = 0.042), and a hazard ratio of 0.50 (95% confidence interval [CI] 0.25–0.99). Documentation of an inadequate analgesic effect was less frequent in the tramadol group (15.4%, 95% CI 8.2–25.3% vs. 30.9%, 95% CI 21.1–42.1%). The cumulative retention rate was greater in the tramadol group (83.7% vs. 69.0%). Adverse events occurred in 80.6% (200/248) of patients in the open-label period, and in 38.5% (30/78) and 13.6% (11/81) of patients in the tramadol and placebo groups, respectively, in the double-blind period. Opioid-associated adverse events, such as nausea, vomiting, constipation, somnolence, and dizziness, were the most frequent events. Conclusion This study demonstrated the analgesic efficacy and safety of sustained-release tramadol tablets with an immediate-release component for chronic knee osteoarthritis pain. Trial registration JapicCTI-132103 (Japan Pharmaceutical Information Center; registration date February 25, 2015) Supplementary Information The online version contains supplementary material available at 10.1007/s40261-022-01139-5.
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Affiliation(s)
- Shinichi Kawai
- Department of Inflammation and Pain Control Research, Toho University School of Medicine, 5-21-16 Omori-Nishi, Ota-ku, Tokyo, 143-8540, Japan.
| | | | | | - Hideshi Nakano
- Department of Clinical Development, Nippon Zoki Pharmaceutical Co., Ltd., Osaka, Japan
| | - Hideaki Ohtani
- Department of Clinical Development, Nippon Zoki Pharmaceutical Co., Ltd., Osaka, Japan
| | - Mineo Sakata
- Department of Clinical Development, Nippon Zoki Pharmaceutical Co., Ltd., Osaka, Japan
| | - Takeshi Adachi
- Department of Clinical Development, Nippon Zoki Pharmaceutical Co., Ltd., Osaka, Japan
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3
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Hill‐McManus D, Marshall S, Soto E, Hughes DA. Integration of Pharmacometrics and Pharmacoeconomics to Quantify the Value of Improved Forgiveness to Nonadherence: A Case Study of Novel Xanthine Oxidase Inhibitors for Gout. Clin Pharmacol Ther 2019; 106:652-660. [DOI: 10.1002/cpt.1454] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 03/04/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Daniel Hill‐McManus
- Centre for Health Economics and Medicines Evaluation Bangor University Bangor UK
| | | | | | - Dyfrig A. Hughes
- Centre for Health Economics and Medicines Evaluation Bangor University Bangor UK
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4
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Li X, Liu C, Zhu X, Wei H, Zhang H, Chen H, Chen G, Yang D, Sun H, Shen Z, Zhang Y, Li W, Yang J, Liu Y, Lai X, Gong Y, Liu X, Li Y, Zhong D, Niu J, Liu B, Ding Y. Evaluation of Tolerability, Pharmacokinetics and Pharmacodynamics of Vicagrel, a Novel P2Y12 Antagonist, in Healthy Chinese Volunteers. Front Pharmacol 2018; 9:643. [PMID: 29973877 PMCID: PMC6019484 DOI: 10.3389/fphar.2018.00643] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 05/29/2018] [Indexed: 01/26/2023] Open
Abstract
Background: Vicagrel is a novel anti-platelet drug and hydrolyzed to the same intermediate as clopidogrel via esterase, instead of CYP2C19. Here we report the first clinical trial on the tolerability, pharmacokinetics and pharmacodynamics of different doses of vicagrel, and comparison with clopidogrel in healthy Chinese volunteers. Methods: This study was conducted in two parts. Study I was a dose-escalating (5-15 mg) study. For each dose, 15 participants were randomized into three groups (total n = 45); nine participants were given vicagrel, three were given clopidogrel, and three were given a placebo. Study II was conducted to assess interactions between vicagrel and aspirin in 15 healthy participants. The plasma concentrations of the metabolites of vicagrel and clopidogrel were determined using a LC-MS/MS method. Platelet aggregation was assessed using the VerifyNow-P2Y12 assay. Results: Vicagrel (5-15 mg per day) dosing for 10 days or addition of aspirin was well tolerated in healthy volunteers. The exposure of the active metabolite increased proportionally across the dose range and was higher (~10-fold) than clopidogrel. The levels of IPA dosing 75 mg clopidogrel were between the responses of 5 mg and 10 mg vicagrel. After a single loading dose of vicagrel (30 mg) and a once-daily maintenance dose (7.5 mg) for 8 days, the maximum inhibition of platelet aggregation was similar to that seen with the combined use of vicagrel and aspirin (100 mg/day). Conclusion: Oral vicagrel demonstrated a favorable safety profile and excellent anti-platelet activity, which could be a promising P2Y12 antagonist as anti-platelet drug and can be further developed in phase II/III studies, and marketing for the unmet medical needs of cardiovascular diseases. The study was registered at http://www.chictr.org.cn (ChiCTR-IIR-16009260).
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Affiliation(s)
- Xiaojiao Li
- Phase I Clinical Trial Unit, First Hospital, Jilin University, Jilin, China
| | - Cai Liu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Xiaoxue Zhu
- Phase I Clinical Trial Unit, First Hospital, Jilin University, Jilin, China
| | - Haijing Wei
- Phase I Clinical Trial Unit, First Hospital, Jilin University, Jilin, China
| | - Hong Zhang
- Phase I Clinical Trial Unit, First Hospital, Jilin University, Jilin, China
| | - Hong Chen
- Phase I Clinical Trial Unit, First Hospital, Jilin University, Jilin, China
| | - Guiling Chen
- Phase I Clinical Trial Unit, First Hospital, Jilin University, Jilin, China
| | - Deming Yang
- Phase I Clinical Trial Unit, First Hospital, Jilin University, Jilin, China
| | - Hongbin Sun
- State Key Laboratory of Natural Medicines and Center of Drug Discovery, College of Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Zhenwei Shen
- First Hospital and Institute of Immunology, First Hospital, Jilin University, Jilin, China
| | - Yifan Zhang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Wei Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Jin Yang
- Center of Drug Metabolism and Pharmacokinetics, China Pharmaceutical University, Nanjing, China
| | | | - Xiaojuan Lai
- Jiangsu Vcare PharmaTech Co. Ltd., Nanjing, China
| | - Yanchun Gong
- Jiangsu Vcare PharmaTech Co. Ltd., Nanjing, China
| | - Xuefang Liu
- Jiangsu Vcare PharmaTech Co. Ltd., Nanjing, China
| | | | - Dafang Zhong
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Junqi Niu
- Department of Hepatology, First Hospital, Jilin University, Jilin, China
| | - Bin Liu
- Department of Hand Surgery, First Hospital, Jilin University, Jilin, China
| | - Yanhua Ding
- Phase I Clinical Trial Unit, First Hospital, Jilin University, Jilin, China
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5
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Pilhatsch M, Glenn T, Rasgon N, Alda M, Sagduyu K, Grof P, Munoz R, Marsh W, Monteith S, Severus E, Bauer R, Ritter P, Whybrow PC, Bauer M. Regularity of self-reported daily dosage of mood stabilizers and antipsychotics in patients with bipolar disorder. Int J Bipolar Disord 2018; 6:10. [PMID: 29713845 PMCID: PMC6161976 DOI: 10.1186/s40345-018-0118-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 01/16/2018] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Polypharmacy is often prescribed for bipolar disorder, yet medication non-adherence remains a serious problem. This study investigated the regularity in the daily dosage taken of mood stabilizers and second generation antipsychotics. METHODS Daily self-reported data on medications taken and mood were available from 241 patients with a diagnosis of bipolar disorder who received treatment as usual. Patients who took the same mood stabilizer or second generation antipsychotic for ≥ 100 days were included. Approximate entropy was used to determine serial regularity in daily dosage taken. Generalized estimating equations were used to estimate if demographic or clinical variables were associated with regularity. RESULTS There were 422 analysis periods available from the 241 patients. Patients took drugs on 84.4% of days. Considerable irregularity was found, mostly due to single-day omissions and dosage changes. Drug holidays (missing 3 or more consecutive days) were found in 35.8% of the analysis periods. Irregularity was associated with an increasing total number of psychotropic drugs taken (p = 0.009), the pill burden (p = 0.026), and the percent of days depressed (p = 0.049). CONCLUSION Despite low missing percent of days, daily drug dosage may be irregular primarily due to single day omissions and dosage changes. Drug holidays are common. Physicians should expect to see partial adherence in clinical practice, especially with complex drug regimens. Daily dosage irregularity may impact the continuity of drug action, contribute to individual variation in treatment response, and needs further study.
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Affiliation(s)
- Maximilian Pilhatsch
- Department of Psychiatry and Psychotherapy, Medical Faculty, University Hospital Carl Gustav Carus, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany.
| | - Tasha Glenn
- ChronoRecord Association Inc., Fullerton, CA, USA
| | - Natalie Rasgon
- Department of Psychiatry and Behavioral Sciences, Stanford School of Medicine, Palo Alto, CA, USA
| | - Martin Alda
- Department of Psychiatry, Dalhousie University, Halifax, NS, Canada
| | - Kemal Sagduyu
- Department of Psychiatry, University of Missouri Kansas City School of Medicine, Kansas City, MO, USA
| | - Paul Grof
- Mood Disorders Center of Ottawa, University of Toronto, Toronto, Canada
| | - Rodrigo Munoz
- Department of Psychiatry, University of California San Diego, San Diego, CA, USA
| | - Wendy Marsh
- Department of Psychiatry, University of Massachusetts, Worcester, MA, USA
| | - Scott Monteith
- Michigan State University College of Human Medicine, Traverse City Campus, Traverse City, MI, USA
| | - Emanuel Severus
- Department of Psychiatry and Psychotherapy, Medical Faculty, University Hospital Carl Gustav Carus, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany
| | - Rita Bauer
- Department of Psychiatry and Psychotherapy, Medical Faculty, University Hospital Carl Gustav Carus, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany
| | - Philipp Ritter
- Department of Psychiatry and Psychotherapy, Medical Faculty, University Hospital Carl Gustav Carus, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany
| | - Peter C Whybrow
- Department of Psychiatry and Biobehavioral Sciences, Semel Institute for Neuroscience and Human Behavior, University of California Los Angeles (UCLA), Los Angeles, CA, USA
| | - Michael Bauer
- Department of Psychiatry and Psychotherapy, Medical Faculty, University Hospital Carl Gustav Carus, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany
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6
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Forni Ogna V, Bassi I, Menetrey I, Muller O, Tousset E, Fontana P, Eeckhout E, Eap CB, Vrijens B, Burnier M, Wuerzner G. Comparative Long-Term Effect of Three Anti-P2Y12 Drugs after Percutaneous Angioplasty: An Observational Study Based on Electronic Drug Adherence Monitoring. Front Pharmacol 2017; 8:738. [PMID: 29118712 PMCID: PMC5660969 DOI: 10.3389/fphar.2017.00738] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 10/02/2017] [Indexed: 11/13/2022] Open
Abstract
Aims: Dual platelet inhibition using anti-P2Y12 drugs and aspirin is the standard of care in patients after percutaneous coronary interventions (PCI). Prasugrel and ticagrelor have been shown to be more potent than clopidogrel with less high on-treatment platelet reactivity. Whether differences in long-term adherence to these drugs can partly explain different antiplatelet efficacy has not been studied so far. The objective was to compare the long-term P2Y12 receptor inhibition and drug adherence to different anti-P2Y12 drugs, and to assess the impact of adherence on the pharmacodynamic effect. Methods: Monocentric, prospective, observational study. Stable outpatients treated with clopidogrel 75 mg once daily, prasugrel 10 mg once daily or ticagrelor 90 mg twice daily after PCI with stent implantation were included. Drug adherence was recorded during 6 months using electronic monitoring. Platelet responsiveness was assessed with the vasodilator-stimulated phosphoprotein platelet reactivity index (VASP-PRI) at inclusion, 3 and 6 months. Results: 120 patients had VASP-PRI and adherence data available. At 6-months, mean VASP-PRI (±SD) was 17.7 ± 11.0% with ticagrelor, 29.2 ± 15.5% with prasugrel and 47.2 ± 17.6% with clopidogrel (ANOVA, P < 0.0001). Median [IQR] taking adherence was 96 [82-100]% with ticagrelor, 100 [97-101]% with prasugrel and 100 [99-101]% with clopidogrel (p = 0.0001). Median [IQR] correct dosing was 88 [73-95]% with ticagrelor, 97 [92.5-98]% with prasugrel and 98 [96-99]% with clopidogrel (p = 0.0001). Anti-P2Y12 drug (p ≤ 0.001) and diabetes (p = 0.014) emerged as predictors of poor antiplatelet response after adjusting for age, BMI, sex, and CYP2C19∗2 carriers status. Conclusion: Drug adherence to anti-P2Y12 drugs assessed with electronic monitoring was very high. However, anti-P2Y12 drugs showed significant differences in antiplatelet activity, with newer anti-P2Y12 drugs ticagrelor and prasugrel exerting a stronger P2Y12 receptor inhibition. These data suggest that pharmacokinetic-pharmacodynamic differences between oral anti-P2Y12 drugs are more important than adherence in determining antiplatelet efficacy when adherence to prescription is high. The study was registered (Current Controlled Trials ISRCTN85949729).
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Affiliation(s)
- Valentina Forni Ogna
- Service of Nephrology and Hypertension, Department of Medicine, Lausanne University Hospital, Lausanne, Switzerland
| | - Isabelle Bassi
- Service of Nephrology and Hypertension, Department of Medicine, Lausanne University Hospital, Lausanne, Switzerland
| | - Isabelle Menetrey
- Service of Nephrology and Hypertension, Department of Medicine, Lausanne University Hospital, Lausanne, Switzerland
| | - Olivier Muller
- Service of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | | | - Pierre Fontana
- Division of Angiology and Hemostasis, Geneva University Hospital, Geneva, Switzerland.,Geneva Platelet Group of the Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Eric Eeckhout
- Service of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Chin B Eap
- Unit of Biochemistry and Clinical Psychopharmacology, Center for Psychiatric Neuroscience, Department of Psychiatry, Lausanne University Hospital, Lausanne, Switzerland.,The Geneva-Lausanne School of Pharmacy (EPGL), University of Geneva, Geneva, Switzerland
| | | | - Michel Burnier
- Service of Nephrology and Hypertension, Department of Medicine, Lausanne University Hospital, Lausanne, Switzerland
| | - Grégoire Wuerzner
- Service of Nephrology and Hypertension, Department of Medicine, Lausanne University Hospital, Lausanne, Switzerland
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7
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Kubica A, Obońska K, Fabiszak T, Kubica J. Adherence to antiplatelet treatment with P2Y12 receptor inhibitors. Is there anything we can do to improve it? A systematic review of randomized trials. Curr Med Res Opin 2016; 32:1441-51. [PMID: 27112628 DOI: 10.1080/03007995.2016.1182901] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Antiplatelet therapy is the cornerstone of treatment for patients with acute coronary syndromes (ACS) and/or undergoing percutaneous coronary interventions. Non-adherence to medication after ACS may lead to increased morbidity, mortality, and costs to the healthcare system due to elevated risk of stent thrombosis, myocardial infarction or death. Medication adherence is an issue of growing concern regarding the improvement of health system performance. Promoting medication adherence offers a rare opportunity to simultaneously improve health outcomes while reducing costs of treatment in patients with coronary artery disease (CAD). The aim of this systematic review was to critically discuss adherence to antiplatelet treatment with P2Y12 receptor inhibitors in CAD patients. After a systematic investigation of the literature in databases including PubMed, CENTRAL and Google Scholar, using appropriate keywords, and considering clinical randomized, prospective observational and retrospective studies, reporting on adherence to treatment with inhibitors of P2Y12 platelet receptors or educational interventions aimed to improve medication adherence in patients with CAD, seven articles were considered eligible for inclusion in this systematic review. Reported adherence to clopidogrel, despite catastrophic consequences of its premature discontinuation, is low. We identified several determinants of low adherence and early discontinuation of clopidogrel. We also present data on the usefulness, utilization and credibility of different methods of medication adherence assessment, and suggest and critically discuss available interventions aimed at improvement of adherence to clopidogrel, still showing the need for innovative approaches to achieve enhanced medication adherence and improve health outcomes after acute myocardial infarction.
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Affiliation(s)
- Aldona Kubica
- a Department of Health Promotion, Collegium Medicum , Nicolaus Copernicus University , Bydgoszcz , Poland
| | - Karolina Obońska
- b Department of Cardiology and Internal Medicine, Collegium Medicum , Nicolaus Copernicus University , Bydgoszcz , Poland
| | - Tomasz Fabiszak
- b Department of Cardiology and Internal Medicine, Collegium Medicum , Nicolaus Copernicus University , Bydgoszcz , Poland
| | - Jacek Kubica
- b Department of Cardiology and Internal Medicine, Collegium Medicum , Nicolaus Copernicus University , Bydgoszcz , Poland
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8
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Dan GA, Buzea AC. Stroke Prevention in Atrial Fibrillation - The Use of NOACs in Everyday Clinical Practice. Eur Cardiol 2015; 10:76-78. [PMID: 30310429 DOI: 10.15420/ecr.2015.10.2.76] [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: 11/04/2022] Open
Abstract
Non-antivitamin K oral anticoagulants (NOACs) have recently emerged as a new class of antithrombotic drugs. Four large-scale, randomised controlled trials (RCT) accredited dabigatran, rivaroxaban and edoxaban with evident advantages for stroke prevention in atrial fibrillation (AF) compared with warfarin. The superiority concerns not only the manageability but also the antithrombotic efficacy and safety. Aspects of real-life clinical experience with NOAC for stroke prevention in AF are analysed in an attempt to underline some practical differences. If at present the individualisation of the NOAC class drugs is still a subject of debate it is probable that in the near future we will be able to adapt the drug and dosages to individual patient's profile.
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Affiliation(s)
| | - Adrian Catalin Buzea
- University of Medicine 'Carol Davila' - Colentina University Hospital, Bucharest, Romania
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9
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Assawasuwannakit P, Braund R, Duffull SB. A framework for quantifying the influence of adherence and dose individualization. Clin Pharmacol Ther 2015; 99:452-9. [PMID: 26959756 DOI: 10.1002/cpt.268] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 09/18/2015] [Indexed: 11/11/2022]
Abstract
A failure to accommodate for a patient's imperfect adherence may result in therapeutic failure. Similarly, failure to accommodate a patient's individual needs via dose individualization may also result in poor patient outcomes. The property of a drug that signifies the likelihood of therapeutic success to imperfect adherence is termed "forgiveness." We introduce an extension to this concept as: (1) a priori forgiveness (forgiveness when dose individualization is not considered) and (2) a posteriori forgiveness (forgiveness when considering dose individualization). We illustrate cases when adherence is of primary importance and in which dose individualization is of primary importance. The concept of a priori forgiveness and a posteriori forgiveness provides a quantitative measure that allows the influence of adherence to be disentangled from dose individualization and could be used to provide clear guidelines about the relative importance of each in clinical practice.
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Affiliation(s)
- P Assawasuwannakit
- School of Pharmacy, University of Otago, Dunedin, New Zealand.,Mahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - R Braund
- School of Pharmacy, University of Otago, Dunedin, New Zealand
| | - S B Duffull
- School of Pharmacy, University of Otago, Dunedin, New Zealand
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10
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Assawasuwannakit P, Braund R, Duffull SB. Quantification of the Forgiveness of Drugs to Imperfect Adherence. CPT-PHARMACOMETRICS & SYSTEMS PHARMACOLOGY 2015. [PMID: 26225235 PMCID: PMC4394614 DOI: 10.1002/psp4.4] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The circumstance of how sensitive therapeutic success is under imperfect adherence is driven by the property known as forgiveness. To date, no studies have considered variability in the pharmacokinetic-pharmacodynamic process in conjunction with imperfect adherence patterns in order to develop a comparative criterion to determine the forgiveness of a drug. In this study, we have proposed a criterion to quantify forgiveness; illustrated the criterion for a theoretical example and evaluated the forgiveness of a motivating example, namely warfarin. A forgiveness criterion, relative forgiveness, is defined as the number of times more likely that a target is successfully attained under perfect adherence compared to imperfect adherence; or when comparing two drugs under a standard setting of imperfect adherence. The relative forgiveness criterion may have important implications for both drug development and clinical practice since the choice of drug can account for the likely influence of its forgiveness.
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Affiliation(s)
| | - R Braund
- School of Pharmacy, University of Otago Dunedin, New Zealand
| | - S B Duffull
- School of Pharmacy, University of Otago Dunedin, New Zealand
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11
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Vrijens B, Heidbuchel H. Non-vitamin K antagonist oral anticoagulants: considerations on once- vs. twice-daily regimens and their potential impact on medication adherence. Europace 2015; 17:514-23. [DOI: 10.1093/europace/euu311] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Accepted: 10/14/2014] [Indexed: 01/03/2023] Open
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12
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Abstract
Despite evidence-based interventions, coronary heart disease (CHD) remains a leading cause of global mortality. As therapies advance, patient non-adherence to established treatments is well recognized. Non-adherence is a powerful confounder of evidence-based practice and can affect daily patient management, resulting in inappropriate therapeutic escalation with greater costs and potential for harm. Moreover, it increases risk for adverse cardiac events, including mortality. Yet, non-adherence is complex, remains difficult to define, and provider ability to identify its presence accurately remains limited. Improved screening tools are needed to detect at-risk patients, enabling appropriate targeting of interventions. Given the rapidly expanding global population with CHD and emerging clinical and cost-benefits of adherence, addressing non-adherence to prescribed therapies is a top priority.
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Affiliation(s)
- Kumaran Kolandaivelu
- Institute for Medical Engineering and Sciences, Massachusetts Institute of Technology, 77 Massachusetts Ave. Bldg. E25-201, Cambridge, MA 02139, USA Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis St., Boston, MA 02115, USA
| | - Benjamin B Leiden
- Institute for Medical Engineering and Sciences, Massachusetts Institute of Technology, 77 Massachusetts Ave. Bldg. E25-201, Cambridge, MA 02139, USA
| | - Patrick T O'Gara
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis St., Boston, MA 02115, USA
| | - Deepak L Bhatt
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis St., Boston, MA 02115, USA
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