Paucis Verbis card: Supratherapeutic INR
What do you do in these cases?
- A man on coumadin for atrial fibrillation arrives because he has increased bruising on his skin. He is otherwise asymptomatic. He was told to come to the ED because of a lab result showing INR = 6.
- A woman on coumadin for atrial fibrillation arrives because of melena and hematemesis. She looks extremely sheet-white pale. Her vital signs are surprising normal. Stat labs show a hematocrit of 15 and an INR value that the lab is “unable to calculate” because it is so high.
Updated on 6/1/13: Old PV card revised to reflect the 2012 ACCP guidelines




A few days I wrote about my “peripheral brain” note cards that I carry with me on each ED shift. These cards contain brief summaries of updated guidelines, evidence based literature, and clinical pearls. I constantly get requests for a copy of them, but they are fairly outdated now that I’m out of residency.