Deranged INRs

Feb 28, 2016


Deranged INRs

Posted in : Uncategorized on by : viral

A woman in her 80s had a hospital acquired pneumonia (HAP). During this time, her INRs did the following whilst her dose of warfarin was maintained at 5mg OD (except for a reduction to 4mg on Day 5):

  Day 1 of HAP Day 4 Day 5 Day 6
INR 1.8 2.5 4.7 6.2
Albumin 36 29 24 20


She was started on tazocin and clarithromycin on Day 1 of the HAP too.

Why did the INR rise so dramatically?


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