NAPLEX
Aug 25, 2025, 09:18
NAPLEX Study Guide – Warfarin Reversal Essentials
NAPLEX Study Guide shared an insightful post on X:
“NAPLEX MedFact
Reversing the effects of warfarin:
- Vitamin K (phytomenadione)
Promotes synthesis of clotting factors II, VII, IX, X.
Oral: slower onset, used for non-urgent reversal.
IV: faster onset, used for significant bleeding.
- Prothrombin Complex Concentrates (PCCs)
Contains concentrated clotting factors II, VII, IX, X.
Rapid reversal, especially in life-threatening bleeding.
Preferred over fresh frozen plasma for speed and lower volume.
- Fresh Frozen Plasma (FFP)
Provides clotting factors directly.
Slower and requires larger volume compared to PCC.
Used when PCC is unavailable or in certain clinical settings.
- Recombinant Activated Factor VII (rFVIIa)
Activates clotting cascade to bypass warfarin effect.
Used in critical cases; off-label.
Limited by high cost and thrombotic risk.”
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