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Nwanosike EM, Merchant HA, Sunter W, Ansari MA, Conway BR, Hasan SS. A real-world exploration into clinical outcomes of direct oral anticoagulant therapy in people with chronic kidney disease: a large hospital-based study. J Nephrol 2024:10.1007/s40620-024-01930-x. [PMID: 38564072 DOI: 10.1007/s40620-024-01930-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Accepted: 03/09/2024] [Indexed: 04/04/2024]
Abstract
BACKGROUND There is limited evidence to support definite clinical outcomes of direct oral anticoagulant (DOAC) therapy in chronic kidney disease (CKD). By identifying the important variables associated with clinical outcomes following DOAC administration in patients in different stages of CKD, this study aims to assess this evidence gap. METHODS An anonymised dataset comprising 97,413 patients receiving DOAC therapy in a tertiary health setting was systematically extracted from the multidimensional electronic health records and prepared for analysis. Machine learning classifiers were applied to the prepared dataset to select the important features which informed covariate selection in multivariate logistic regression analysis. RESULTS For both CKD and non-CKD DOAC users, features such as length of stay, treatment days, and age were ranked highest for relevance to adverse outcomes like death and stroke. Patients with Stage 3a CKD had significantly higher odds of ischaemic stroke (OR 2.45, 95% Cl: 2.10-2.86; p = 0.001) and lower odds of all-cause mortality (OR 0.87, 95% Cl: 0.79-0.95; p = 0.001) on apixaban therapy. In patients with CKD (Stage 5) receiving apixaban, the odds of death were significantly lowered (OR 0.28, 95% Cl: 0.14-0.58; p = 0.001), while the effect on ischaemic stroke was insignificant. CONCLUSIONS A positive effect of DOAC therapy was observed in advanced CKD. Key factors influencing clinical outcomes following DOAC administration in patients in different stages of CKD were identified. These are crucial for designing more advanced studies to explore safer and more effective DOAC therapy for the population.
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Affiliation(s)
- Ezekwesiri Michael Nwanosike
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, West Yorkshire, HD1 3DH, UK
- Calderdale and Huddersfield Pharmacy Services, Anticoagulation Services, Calderdale and Huddersfield NHS Foundation Trust Hospitals, Lindley, Huddersfield, HD3 3EA, UK
| | - Hamid A Merchant
- Department for Bioscience, School of Health, Sport and Bioscience, The University of East London, London, E16 2RD, UK
- Calderdale and Huddersfield Pharmacy Services, Anticoagulation Services, Calderdale and Huddersfield NHS Foundation Trust Hospitals, Lindley, Huddersfield, HD3 3EA, UK
| | - Wendy Sunter
- Calderdale and Huddersfield Pharmacy Services, Anticoagulation Services, Calderdale and Huddersfield NHS Foundation Trust Hospitals, Lindley, Huddersfield, HD3 3EA, UK
| | - Muhammad Ayub Ansari
- School of Computing and Engineering, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
| | - Barbara R Conway
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, West Yorkshire, HD1 3DH, UK
- Calderdale and Huddersfield Pharmacy Services, Anticoagulation Services, Calderdale and Huddersfield NHS Foundation Trust Hospitals, Lindley, Huddersfield, HD3 3EA, UK
| | - Syed Shahzad Hasan
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, West Yorkshire, HD1 3DH, UK.
- Calderdale and Huddersfield Pharmacy Services, Anticoagulation Services, Calderdale and Huddersfield NHS Foundation Trust Hospitals, Lindley, Huddersfield, HD3 3EA, UK.
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Nwanosike EM, Merchant HA, Sunter W, Ansari MA, Conway BR, Hasan SS. Direct oral anticoagulants and the risk of adverse clinical outcomes among patients with different body weight categories: a large hospital-based study. Eur J Clin Pharmacol 2024; 80:163-173. [PMID: 37978999 PMCID: PMC10781787 DOI: 10.1007/s00228-023-03593-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 11/05/2023] [Indexed: 11/19/2023]
Abstract
OBJECTIVE Through predictable pharmacokinetics-including a convenient fixed-dose regimen, direct oral anticoagulants (DOACs) are preferred over previous treatments in anticoagulation for various indications. However, the association between higher body weight and the risk of adverse consequences is not well studied among DOAC users. We aim to explore the association of body weight and adverse clinical outcomes in DOAC users. METHODS A total of 97,413 anonymised DOAC users in a tertiary care setting were identified following structured queries on the electronic health records (EHRs) to extract the feature-rich anonymised dataset. The prepared dataset was analysed, and the features identified with machine learning (ML) informed the adjustments of covariates in the multivariate regression analysis to examine the association. Kaplan-Meier analysis was performed to evaluate the mortality benefits of DOACs. RESULTS Among DOAC users, the odds of adverse clinical outcomes, such as clinically relevant non-major bleeding (CRNMB), ischaemic stroke, all-cause mortality, and prolonged hospital stay, were lower in patients with overweight, obesity, or morbid obesity than in patients with normal body weight. The odds of ischaemic stroke (OR 0.42, 95% CI: 0.36-0.88, p = 0.001) and all-cause mortality (OR 0.87, 95% CI: 0.81-0.95, p = 0.001) were lower in patients with morbid obesity than in patients with normal body weight. In the Kaplan-Meier analysis, apixaban was associated with a significantly lower rate of mortality overall and in obesity and overweight subgroups than other DOACs (p < 0.001). However, rivaroxaban performed better than apixaban in the morbid obesity subgroup (p < 0.001). CONCLUSION This study shows the positive effects of DOAC therapy on clinical outcomes, particularly in patients with high body weight. However, this still needs validation by further studies particularly among patients with morbid obesity.
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Affiliation(s)
- Ezekwesiri Michael Nwanosike
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
| | - Hamid A Merchant
- Department for Bioscience, School of Health, Sport and Bioscience, the University of East London, London, E16 2RD, UK
| | - Wendy Sunter
- Calderdale and Huddersfield Pharmacy Services, Anticoagulation Services, Calderdale and Huddersfield NHS Foundation Trust Hospitals, Lindley, Huddersfield, HD3 3EA, UK
| | - Muhammad Ayub Ansari
- School of Computing and Engineering, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
| | - Barbara R Conway
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK
| | - Syed Shahzad Hasan
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK.
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Nwanosike EM, Sunter W, Ansari MA, Merchant HA, Conway B, Hasan SS. A Real-World Exploration into Clinical Outcomes of Direct Oral Anticoagulant Dosing Regimens in Morbidly Obese Patients Using Data-Driven Approaches. Am J Cardiovasc Drugs 2023; 23:287-299. [PMID: 36872389 DOI: 10.1007/s40256-023-00569-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/27/2022] [Indexed: 03/07/2023]
Abstract
INTRODUCTION The clinical outcomes of direct oral anticoagulant (DOAC) dosage regimens in morbid obesity are uncertain due to limited clinical evidence. This study seeks to bridge this evidence gap by identifying the factors associated with clinical outcomes following the dosing of DOACs in morbidly obese patients. METHOD A data-driven observational study was carried out using supervised machine learning (ML) models with a dataset extracted from electronic health records and preprocessed. Following 70%:30% partitioning of the overall dataset via stratified sampling, the selected ML classifiers (e.g., random forest, decision trees, bootstrap aggregation) were applied to the training dataset (70%). The outcomes of the models were evaluated against the test dataset (30%). Multivariate regression analysis explored the association between DOAC regimens and clinical outcomes. RESULTS A sample of 4,275 morbidly obese patients was extracted and analysed. The decision trees, random forest, and bootstrap aggregation classifiers achieved acceptable (excellent) values of precision, recall, and F1 scores in terms of their contribution to clinical outcomes. The length of stay, treatment days, and age were ranked highest for relevance to mortality and stroke. Among DOAC regimens, apixaban 2.5 mg twice daily ranked highest for its association with mortality, increasing the mortality risk by 43% (odds ratio [OR] 1.430, 95% confidence interval [CI] 1.181-1.732, p = 0.001). On the other hand, apixaban 5 mg twice daily reduced the odds of mortality by 25% (OR 0.751, 95% CI 0.632-0.905, p = 0.003) but increased the odds of stroke events. No clinically relevant non-major bleeding events occurred in this group. CONCLUSION Data-driven approaches can identify key factors associated with clinical outcomes following the dosing of DOACs in morbidly obese patients. This will help design further studies to explore well tolerated and effective DOAC doses for morbidly obese patients.
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Affiliation(s)
- Ezekwesiri Michael Nwanosike
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Queensgate, HD1 3DH, Huddersfield, UK
| | - Wendy Sunter
- Anticoagulant Services, Calderdale and Huddersfield NHS Foundation Trust Hospital, Lindley, HD3 3EA, Huddersfield, UK
| | - Muhammad Ayub Ansari
- School of Computing and Engineering, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, West Yorkshire, UK
| | - Hamid A Merchant
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Queensgate, HD1 3DH, Huddersfield, UK
| | - Barbara Conway
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Queensgate, HD1 3DH, Huddersfield, UK
| | - Syed Shahzad Hasan
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Queensgate, HD1 3DH, Huddersfield, UK.
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Kow CS, Sunter W, Hasan SS. Management of Comedication in Hospitalized COVID-19 Patients With Atrial Fibrillation. Hosp Pharm 2021; 56:629-632. [PMID: 34732912 DOI: 10.1177/0018578720947354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Chia Siang Kow
- International Medical University, Kuala Lumpur, Malaysia
| | - Wendy Sunter
- Calderdale and Huddersfield NHS Foundation Trust, Huddersfield, UK
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Hasan SS, Sunter W, Ahmed N, Dawoud D, Zaidi STR. Venous thromboembolism prophylaxis in patients undergoing knee replacements: comparison of real-world outcomes. Int J Clin Pharm 2020; 43:621-628. [PMID: 33070296 PMCID: PMC8214589 DOI: 10.1007/s11096-020-01173-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 10/06/2020] [Indexed: 10/25/2022]
Abstract
Background Increasing evidence for the use of the aspirin in patients undergoing an orthopaedic surgery for venous thromboembolism prophylaxis has led to a change in the national guidelines substituting anticoagulants with aspirin. Little is known about the impact of such substitution on real-world outcomes from clinical practice. Objective The study was designed to examine clinical outcomes associated with the use of aspirin and apixaban. Setting Two large-scale general hospitals in West Yorkshire region of England. Method A 1-year observational study among adults who underwent elective knee replacements and received venous thromboembolism prophylaxis within the first 14 days post replacements. Main outcome measure The incidence of postoperative venous thromboembolism, leaking wounds during the hospital stay, and 30-day any readmission for the two drugs. Results A total of 420 patients were included. There was a significant drop in apixaban prescribing (from 80.37 to 10.51%) and increase in aspirin use (from 19.02 to 81.71%) after the implementation of the revised guidelines. There were 52 (12.38%) cases of leaking wound, 16 (3.81%) cases of postoperative venous thromboembolism, 45 (10.71%) cases of 30-day readmission and no case of 30-day major bleeding. The leaking wounds and 30-day readmissions were almost twice more frequent in obese compared to non-obese patients. Multivariate logistic regression found an increased risk of leaking wound with apixaban and postoperative venous thromboembolism and 30-day readmission with aspirin use but the differences were not statistically significant. Conclusion The results suggest aspirin to be as effective as apixaban in preventing venous thromboembolism and readmission. Apixaban usage decreased with a corresponding increase in Aspirin use. The impact of obesity and length of hospital stay need further investigations.
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Affiliation(s)
- Syed Shahzad Hasan
- Department of Pharmacy, University of Huddersfield, Huddersfield, UK. .,School of Biomedical Sciences and Pharmacy, University of Newcastle, Newcastle, Australia.
| | - Wendy Sunter
- Calderdale and Huddersfield Anticoagulant Clinic, Calderdale and Huddersfield NHS Foundation Trust, Huddersfield, UK
| | - Nadia Ahmed
- Department of Pharmacy, University of Huddersfield, Huddersfield, UK
| | - Dalia Dawoud
- Department of Clinical Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Syed Tabish Razi Zaidi
- School of Healthcare, University of Leeds, Leeds, UK.,Leeds Teaching Hospitals NHS Trust, Leeds, UK
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Abstract
Many healthcare resources have been and continue to be allocated to the management of patients with COVID-19. Therefore, the ongoing care of patients receiving oral anticoagulation with warfarin is likely to be compromised amid this unprecedented crisis. This article discusses a stepwise algorithm for the management of outpatient warfarin therapy. Alternative management strategies are presented and discussed, including alternative pharmacological therapy options and self-monitoring. Our algorithm aims to help clinicians safely optimize the treatment of patients requiring anticoagulation therapy in the context of the global response to the current pandemic.
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Affiliation(s)
- Chia Siang Kow
- School of Postgraduate Studies, International Medical University, Kuala Lumpur, Malaysia
| | - Wendy Sunter
- Anticoagulant Services, Calderdale and Huddersfield NHS Foundation Trust, Huddersfield, UK
| | - Amie Bain
- Department of Pharmacy, University of Huddersfield, Huddersfield, UK
- Department of Pharmacy, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - Syed Tabish Razi Zaidi
- School of Healthcare, University of Leeds, Leeds, UK
- Leeds Teaching Hospitals NHS Trust, Leeds, UK
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Abstract
Many healthcare resources have been and continue to be allocated to the management of patients with COVID-19. Therefore, the ongoing care of patients receiving oral anticoagulation with warfarin is likely to be compromised amid this unprecedented crisis. This article discusses a stepwise algorithm for the management of outpatient warfarin therapy. Alternative management strategies are presented and discussed, including alternative pharmacological therapy options and self-monitoring. Our algorithm aims to help clinicians safely optimize the treatment of patients requiring anticoagulation therapy in the context of the global response to the current pandemic.
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Hasan SS, Sunter W, Ahmed N, Royle-Pryor A, Brkic A, Ahmed R, Afzal S, Babar ZUD. A comparison of warfarin monitoring service models. Res Social Adm Pharm 2019; 15:1236-1242. [DOI: 10.1016/j.sapharm.2018.10.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 10/20/2018] [Accepted: 10/27/2018] [Indexed: 11/27/2022]
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Abstract
AIMS The use of medication and information discharge summaries (MIDS) has become a standard procedure in many hospitals. We have evaluated if these summaries, together with in-patient pharmaceutical counselling backed up with a simple medicine reminder card, may help with the delivery of seamless pharmaceutical care. METHODS Elderly patients prescribed more than four items discharged to their own home received the standard discharge policy including a recently introduced MIDS and medicine reminder card. Each patient's GP was sent a copy on discharge. Pre-discharge a pharmacist counselled study patients about their medicines and compliance. A research pharmacist visited patients in their home approximately 2-3 weeks and at 3 months post-discharge to determine their drug knowledge, compliance, home medicine stocks and any healthcare related events. RESULTS Forty-three study and 40 control patients completed both visits. Their mean (s.d.) ages were 80.2 (5,7) and 81.1 (5,8) years and they were prescribed 7.1 (1.8) and 7.1 (2.3) items, respectively. At visit 1 knowledge (P < 0.01) and compliance (P < 0.001) was better in the study group. At visit 2 compliance had improved in the study group (P < 0.001). Unplanned visits to the GP and readmission to hospital amongst the study group were 19 and 5, respectively, which were both significantly less (P < 0.05) than 27 and 13 in the control group. At visit 2 for the study group the 24 unplanned GP visits and three re-admissions were significantly (P < 0.05) less than the respective 32 and 15 in the control group. At visit 1, two study group patients had altered their own medication compared with 10 control patients. At visit 2 these reduced to 0 and 4, respectively. CONCLUSIONS In-patient pharmaceutical counselling, linked to a medication and information discharge summary and a medicine reminder card, contributed to better drug knowledge and compliance together with reduced unplanned visits to the doctor and re-admissions. A pharmaceutical domiciliary visit consolidated the improved healthcare outcomes.
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Affiliation(s)
- S A Al-Rashed
- School of Pharmacy, University of BradfordBradford BD7 1DP
| | - D J Wright
- School of Pharmacy, University of BradfordBradford BD7 1DP
| | - N Roebuck
- Pharmacy Department, Huddersfield Royal InfirmaryHuddersfield HD3 3EB, UK
| | - W Sunter
- Pharmacy Department, Huddersfield Royal InfirmaryHuddersfield HD3 3EB, UK
| | - H Chrystyn
- School of Pharmacy, University of BradfordBradford BD7 1DP
- Correspondence: Professor H. Chrystyn, The School of Pharmacy, University of Bradford, Huddersfield HD3 3EB, UK. Tel.: + 44 1274233495; Fax: + 44 1274236490; E-mail:
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