Table. Warfarin Initiation (for patient with average daily dose of 5 mg)

DAY
INR
DOSE
INPATIENT
(Usually with daily INR)
OUTPATIENT
1
Normal
5.0 mg
( 2.5 or 7.5-10.0 mg in patients listed in the text )
5.0 mg
( 2.5 or 7.5-10.0 mg in patients listed in the text )
2

< 1.5
> 1.5
5.0 mg
0.0 - 2.5 mg
5.0 mg
0.0 - 2.5 mg
..[If not measured
5.0 mg]
3
< 1.5
1.5 - 1.9
2.0 - 3.0
> 3.0
5.0 - 10 mg
2.5 - 5.0 mg
0.0 - 2.5 mg
0.0 mg
5.0 - 10 mg
2.5 - 5.0 mg
0.0 - 2.5 mg
0.0 mg

.

.

INR should be measured today. If INR is not measured, may use the same dose as day 2, and should not > 5 mg
4
<1.5
1.5 - 1.9
2.0 - 3.0
> 3.0
10.0 mg
5.0 - 7.5 mg
0.0 - 5.0 mg
0.0 mg
10.0 mg
5.0 - 7.5 mg
0.0 - 5.0 mg
0.0 mg
..INR measurement should be done, if INR on day 3 is <1.5 or >3.0
5
< 1.5
1.5 - 1.9
2.0 - 3.0
> 3.0
10.0 - mg
7.5 - 10.0 mg
0.0 - 5.0 mg
0.0 mg
10.0 - mg
7.5 - 10.0 mg
0.0 - 5.0 mg
0.0 mg
..INR measurement should be done, if INR on day 4 is <1.5 or >3.0
6
< 1.5
1.5 - 1.9
2.0 - 3.0
> 3.0
7.5 - 12.5 mg
5.0 - 10.0 mg
0.0 - 7.5 mg
0.0 mg
7.5 - 12.5 mg
5.0 - 10.0 mg
0.0 - 7.5 mg
0.0 mg
..INR measurement should be done, if INR on day 5 is <1.5 or >3.0