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Table 11 Cardiovascular nurses knowledge on how to advise patients on warfarin

From: Education and practice gaps on atrial fibrillation and anticoagulation: a survey of cardiovascular nurses

Question n (%)
While on warfarin the patient:
 • Should not eat spinach
 • Can eat spinach once a month
 • Can eat as much spinach as he likes whenever he likes
• Can eat spinach but needs to eat the same amount every week
Don’t know
Skipped question
9 (18)
1 (2)
2 (4)
34 (69)
3 (6)
6
While out with friends for dinner, your patient has just finished his third glass of wine. This amount of alcohol consumed in a single evening will:
 • Cause a decrease in INR
 • Cause an increase in INR
 • Does not affect warfarin in any way
 • Make the patient sick when taking warfarin medication
Don’t know
Skipped question
7 (15)
26 (55)
3 (6)
1 (2)
10 (21)
8
The best time of day to take warfarin is:
 • At lunchtime
 • In the evening
 • In the morning before breakfast
 • Any time of the day when you remember
 • Don’t know
 • Skipped question
0 (0)
44 (88)
2 (4)
3 (6)
1 (2)
5
Once the patient has reached a stable warfarin dose, a PT/INR blood test:
 • Should be checked once a year
 • Should be checked once every 3 months
 • Should be checked at least once every 4 weeks
 • Does not need to be checked once on a stable warfarin does
Don’t know
Skipped question
0 (0)
5 (10)
45 (90)
0 (0)
0 (0)
5
A patient just remembered that he forgot to take his warfarin medication dose last night. He/She should:
 • Skip in the dose of warfarin he/she missed
 • Take the missed warfarin dose right now
 • Wait and take two doses right now
 • Take one-half of the missed dose of warfarin right now
Don’t know
Skipped question
29 (58)
8 (16)
0 (0)
8 (16)
5 (10)
5
Once the patient’s warfarin is stopped, how long does it take to get the medication out of his/ her system?
 • 5 h
 • 5 days
 • 5 weeks
 • 5 months
 • Don’t know
 • Skipped question
1 (2)
38 (76)
2 (4)
0 (0)
9 (18)
5
After starting warfarin, how long(in months/years) would you expect the patient to be taking warfarin?
 • 1 year
 • 1 month
 • It depends on each person’s needs
 • If you start warfarin you will have to be on the medication for the rest of your life
Don’t know
Skipped question
0 (0)
0 (0)
43 (84)
9 (18)
0 (0)
4
Women who are pregnant:
 • Should not take warfarin
 • Can safely take warfarin during the second and third trimester
• Can take warfarin but only need to take it every others day
• Would not need to take warfarin, since being pregnant prevents them from getting blood clots
Don’t know
Skipped question
24 (48)
6 (12)
0 (0)
0 (0)
20 (40)
5
  1. Correct answers are shown in bold