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Example: Coagulation-Related ADE
- Alert: warfarin and an INR > 4
- Investigation: Adult patient previously admitted for A. fib, discharged on warfarin. Patient returned to the ED 10 days later feeling unwell; while in the ED, vomited 200cc of bright red blood. INR was 12.3. Patient required FFP and vitamin K, and was transferred to the ICU.
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