warfarin HIGH ALERT
Vitamin K antagonistWhat it's for
Mechanical valves, a-fib, VTE
Nursing considerations
- Check today's INR BEFORE today's dose — every time
- Every new med (especially antibiotics) moves the INR
- Consistent vitamin K intake — steady greens, not none
- Antidote: vitamin K; 4F-PCC for serious bleeding
Key side effects
📈 Watch
INR (usually 2–3), bleeding signs
Source: Generic names only, per NCSBN convention. Primary sources: Lehne's Pharmacology for Nursing Care, 11th ed.; Davis's Drug Guide for Nurses. Educational reference — verify every medication decision against your facility's formulary, pharmacy, and the prescriber. Doses shown are typical adult references, not recommendations.Reference only — verify against your facility's policy.
