MKSAP: 77-year-old woman with frequently fluctuating INRs
Test your medicine knowledge with the MKSAP challenge, in partnership with the American College of Physicians.
A 77-year-old woman is evaluated for frequently fluctuating INRs (<1.8 to >3.5) while taking warfarin therapy. She has undergone INR testing every 1 to 2 weeks and frequent warfarin dose adjustments. She reports a consistent dietary intake. Medical history is notable only for recurrent deep venous thrombosis. She takes no other medications.
On physical …
MKSAP: 77-year-old woman with frequently fluctuating INRs











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