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Safety and Effectiveness of Apixaban Compared to Warfarin in Secondary Prevention in Patients With Atrial Fibrillation

Non-valvular Atrial Fibrillation Clinical Trial

Official title:
Safety and Effectiveness of Apixaban Compared to Warfarin in Secondary Prevention in Patients With NVAF With a History of Stroke or Transient Ischemic Attack - a Nationwide Retrospective Observational Study Using Claims Data in Japan

Clinical Trial Summary

The purpose of this study are 1) to characterize the primary and secondary prevention patients, 2) to calculate incidence rates of stroke/SE or major bleeding in each cohort and 3) to investigate for Japanese secondary prevention patients as Real World Evidence (RWE) on the effectiveness and safety of apixaban compared to warfarin in patients with non-valvular atrial fibrillation (NVAF).

Clinical Trial Description

Japanese population has shown to have higher rate of incidence of stroke and stroke mortality is also higher. Patients with a history of ischemic stroke are at high risk of recurrence and require more rigorous management to prevent recurrence. The same is true for patients with non-valvular atrial fibrillation (NVAF) and treatment with anticoagulants reduces the risk of recurrent embolic stroke. However, some patients still suffer from recurrent embolic and/or ischemic stroke even if they are on anticoagulants for secondary prevention. In addition to the recurrent stroke, risk of bleeding is also higher in the patients with a history of stroke because they are often chronically treated with antiplatelet agents to prevent recurrence after cerebral infarction and with an anticoagulant after embolic stroke. Concomitant use of anticoagulant and anti-platelet agents is sometimes necessary if patients with AF experience cerebral infarction and the risk of bleedings largely enhances in these patients. Thus, patients in secondary prevention are at higher risk of both recurrent ischemic stroke and more effective and safer antithrombotic therapy should take this into account. The purpose of this study are 1) to characterize the primary and secondary prevention patients, 2) to calculate incidence rates of stroke/SE or major bleeding in each cohort and 3) to investigate for Japanese secondary prevention patients as RWE on the effectiveness and safety of apixaban compared to warfarin in patients NVAF. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT05321810
Study type Observational
Source Pfizer
Contact
Status Completed
Phase
Start date April 15, 2022
Completion date April 15, 2022
View Details
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