• Filter By:
• Specialty
• Source
• Condition
• Cancer
• Infectious Disease
• Drug
• Training
• Management
• Procedure
• Therapy
• Vaccine
• Nutrition
• Country

Vitamin K Antagonist Use and Intracranial Hemorrhage After Endovascular Thrombectomy
This retrospective cohort study assesses the association between recent use of oral vitamin K antagonists and symptomatic intracranial hemorrhage among patients with acute ischemic stroke undergoing endovascular thrombectomy.
Source: JAMA - June 20, 2023 Category: General Medicine Source Type: research

Use of Oral Anticoagulants and Intracranial Hemorrhage Among Patients With Acute Ischemic Stroke
To the Editor A recent article suggested that the use of non –vitamin K antagonist oral anticoagulants (NOACs) within 7 days of intravenous alteplase was not associated with an increased risk of intracranial hemorrhage. However, we are concerned that some readers may interpret these results as an endorsement of the use of alteplase in patients with acute st roke who were taking NOACs, irrespective of the time frame of last use. Based on dose-finding studies, the drug half-life is 12 hours for apixaban, 11 to 13 hours for rivaroxaban, 10 to 14 hours for edoxaban, and 12 to 17 hours for dabigatran in patients with normal k...
Source: JAMA - June 21, 2022 Category: General Medicine Source Type: research

Intravenous Thrombolytic Therapy for Treatment of Acute Ischemic Stroke in Patients Taking NOACs
Intravenous thrombolytic therapy with recombinant tissue plasminogen activator (alteplase) is the cornerstone of acute ischemic stroke reperfusion therapy and is associated with significant improvements in outcomes. Historically, a number of exclusion criteria for use of alteplase had been in place, but over the past 20 years, some of these have been eliminated (eg, age>80 years, seizures at stroke onset) or have become less stringent (eg, exclusion criteria may not strictly apply to recent vitamin K antagonist treatment if the patient has an international normalized ratio<1.7, and treatment may be administered in an...
Source: JAMA - February 22, 2022 Category: General Medicine Source Type: research

Recent Use of NOACs and Intracranial Hemorrhage in Patients With Stroke Treated With Alteplase
This retrospective cohort study uses data from hospitals participating in the Get With The Guidelines –Stroke registry on patients with acute ischemic stroke and compares the safety and functional outcomes of intravenous alteplase among patients who were taking non–vitamin K antagonist oral anticoagulants (NOACs) prior to stroke vs patients who were not taking long-term anticoagulants.
Source: JAMA - February 22, 2022 Category: General Medicine Source Type: research

Informing the Choice of Direct Oral Anticoagulant Therapy in Patients With Atrial Fibrillation
Anticoagulation is the fundamental priority for the prevention of stroke in patients with atrial fibrillation, yet enthusiasm for use among patients at highest thromboembolic risk is often tempered by concern for increased bleeding. In one of the earliest studies evaluating vitamin K antagonists (VKA) in atrial fibrillation, Askey and Cherry noted in 1950 that anticoagulant use for thromboembolic prophylaxis requires “a reasonable assurance that the benefit will justify the bother and expense of control and the dangers of the drug,” and predicted that “safer anticoagulant drugs will be available eventually.” It wou...
Source: JAMA - December 21, 2021 Category: General Medicine Source Type: research

How Effective and Safe Is Factor XI Inhibition in Preventing Venous Thrombosis?
The introduction of the direct oral anticoagulants for stroke prevention in atrial fibrillation and the management of thromboembolism has transformed the care of patients with these disorders. These drugs, which selectively and reversibly inhibit factor Xa or thrombin in the common pathway of the coagulation cascade, have a wide therapeutic window; this allows for simplified dosing regimens without laboratory monitoring of most adult patients as contrasted to vitamin K antagonists. This class of drug is also associated with a lower bleeding risk than vitamin K antagonists, which has been most clearly demonstrated by a 50% ...
Source: JAMA - January 14, 2020 Category: General Medicine Source Type: research