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Interaction between warfarin and astaxanthin: A case report
This report explains the potential interaction between warfarin and astaxanthin in a 69-year-old Thai woman with history of ischemic stroke. Before taking astaxanthin, the patient used constant doses of warfarin, atenolol, digoxin, aspirin, omeprazole, and simvastatin concomitantly for 17 days without any signs and symptoms of adverse events. One day after astaxanthin was supplemented to her treatment regimen, ecchymosis was found on the right side of her groin and thigh. On the next day, area of ecchymosis was larger. International normalized ratio (INR) values increased from 1.4 to 10.38. Warfarin and astaxanthin were wi...
Source: Journal of Cardiology Cases - February 19, 2019 Category: Cardiology Source Type: research

Assessing patient preferences for switching from warfarin to direct oral anticoagulants
This study assessed patient preference for warfarin or DOAC based on a willingness to pay more for potential DOAC benefits. Current warfarin patients with atrial fibrillation or venous thromboembolism enrolled in the University of Utah Health Thrombosis Service were given a one-time electronic survey that assessed preferences between warfarin and DOACs using scenarios comparing effectiveness, safety, and convenience. When DOACs were preferred, patients were asked how much more they would be willing to pay monthly for the perceived advantages associated with DOACs. With 123 completed surveys, 68% of patients preferred to st...
Source: Journal of Thrombosis and Thrombolysis - October 19, 2019 Category: Hematology Source Type: research

Commentary: Moving the dial on DOAC use early after cardiac surgery
Atrial fibrillation remains an unsolved complication after cardiac surgery with published rates in the 20-50%1,2. As outlined in a recent STS database analysis3, over 60% of US surgeons still use warfarin rather than switching to direct oral anticoagulants (DOACs) for stroke prophylaxis in this clinical scenario. This trend persists despite the limitations associated with warfarin use, including prolonged and often turbulent early titration in new patients, dietary restrictions, strict monitoring requirements and extensive medication interactions.
Source: Seminars in Thoracic and Cardiovascular Surgery - June 14, 2021 Category: Cardiovascular & Thoracic Surgery Authors: Asishana A. Osho, Gus J. Vlahakes Tags: ADULT – Commentary Source Type: research

Personalizing Direct Oral Anticoagulant Therapy for a Diverse Population: Role of Race, Kidney Function, Drug Interactions and Pharmacogenetics
Clin Pharmacol Ther. 2022 Jul 20. doi: 10.1002/cpt.2714. Online ahead of print.ABSTRACTOral anticoagulants (OACs) are commonly used to reduce the risk of venous thromboembolism (VTE) and the risk of stroke in patients with atrial fibrillation (AF). Endorsed by the American Heart Association, American College of Cardiology, and the European Society of Cardiology, direct oral anticoagulants (DOACs) have displaced warfarin as the OAC of choice for both conditions, due to improved safety profiles, fewer drug-drug and drug-diet interactions, and lack of monitoring requirements. Despite their widespread use and improved safety o...
Source: Clinical Pharmacology and Therapeutics - July 20, 2022 Category: Drugs & Pharmacology Authors: Lorenzo E Thompson Brittney H Davis Renuka Narayan Blake Goff Todd M Brown Nita A Limdi Source Type: research

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