Graves’ Disease and Treatment Effects on Warfarin Anticoagulation

Table 1

Inpatient warfarin response during hyperthyroid storm.

Day of warfarin	Venopuncture INR^a	Warfarin dose (mg/day)	TSH^b (𝜇IU/mL)	Free T4^c (ng/dL)
1	1.18^d	5	0.006	>7.77
2	1.27	5
5	3.02	5
7	4.41^e	5

aINR: international normalized ratio, goals 2-3.
^bTSH: thyroid stimulating hormone, reference range 0.450–4.500 𝜇IU/mL.
^cFree T₄: free thyroxine, reference range 0.82–1.77 ng/dL.
^dINR was baseline level obtained prior to warfarin dose.
^eINR result posted after patient had been discharged from hospital.