"Zeus" a new oral anticoagulant therapy dosing algorithm: a cohort study

Area of Science:

• Pharmacology and Therapeutics
• Medical Informatics

Background:

• Oral anticoagulant therapy (OAT) demand has risen, with increasing use of computer assistance.
• Mathematical algorithms are developed to guide OAT dosing and follow-up.
• Expert physicians manually manage OAT based on International Normalized Ratio (INR) targets.

Purpose of the Study:

• To evaluate the efficacy and safety of a new algorithm, "Zeus", for OAT dosing.
• To compare Zeus algorithm dosing against manual dosing by expert physicians.
• To assess improvements in therapy quality, efficiency, and safety.

Main Methods:

• A before-after study design was employed.
• Data from 1876 patients were analyzed, with each patient managed under both modalities for eight months.
• The study compared algorithm-assisted dosing versus physician-determined manual dosing.

Main Results:

• Time in therapeutic range (TTR) was significantly higher with Zeus (62.3%) versus manual dosing (50.3%).
• Algorithm-guided prescriptions significantly reduced PT/INR tests above 5 and the total anticoagulant drug amount.
• Fewer clinical events were observed in patients managed with the Zeus algorithm.

Conclusions:

• The Zeus algorithm demonstrates significant clinical utility in computer-assisted OAT.
• The algorithm proves to be an effective and safe method for managing OAT.
• Computer-assisted OAT, particularly with the Zeus algorithm, enhances therapeutic outcomes.