Table 2 Percentage of correct answers in Brazilian version of OAK Test and the correlation values after exclusion of each item (n = 201), 2015

1. Missing one dose of Coumadin (warfarin):

1. Esquecer de tomar uma dose da varfarina:

Correct answer:

a. has no effect

b. can alter the drug’s effectiveness ^a

c. is permissible as long as you take a double dose the next time

d. is permissible as long as you watch which foods you eat

84 %

2. You can distinguish between different strengths of Coumadin (warfarin) tablets by what?

2. Você consegue diferenciar entre diferentes doses do comprimido da varfarina utilizando-se de?

Correct answer:

a. color

b. shape

c. size

d. weight

78 %

3. A patient on Coumadin (warfarin) therapy

should contact the physician or healthcare provider who monitors it when:

3. O paciente que toma varfarina deve entrar em contato com o médico ou quem acompanha o tratamento quando:

Correct answer:

a. another physician adds a new medication

b. another physician stops a current medication

c. another physician changes a dose of a current medication

d. all of the above

63 %

4. Occasionally eating a large amount of leafy greens vegetables while taking Coumadin (warfarin) can:

4. Ocasionalmente comer uma grande quantidade de folhas verdes enquanto toma varfarina pode:

Correct answer:

a. increase your risk of bleeding from Coumadin (warfarin)

b. reduce the effectiveness of the Coumadin (warfarin)

c. cause upset stomach and vomiting

d. reduce your risk of having a blood clot

51 %

5. Which of the following vitamins interacts with Coumadin (warfarin)?

5. Qual das vitaminas abaixo interage com a varfarina?

Correct answer:

a. vitamin B12

b. vitamin A

c. vitamin B6

d. vitamin K

49 %

6. When is it safe to take a medication that

interacts with Coumadin (warfarin)?

6. Quando é seguro tomar um medicamento que interage com a varfarina?

Correct answer:

a. if you take the Coumadin (warfarin) in the morning and the interacting medication at night

b. if your healthcare provide is aware of the interaction and checks your PT/INR (“Protime”) regularly

c. if you take your Coumadin (warfarin) every other day

d. it is never safe to take a medication that interacts with Coumadin (warfarin)

40 %

7. The PT/INR (“Protime”) test is:

7. O exame de RNI é:

Correct answer:

a. a blood test used to monitor your Coumadin (warfarin) therapy

b. a blood test that is rarely done while on Coumadin (warfarin)

c. a blood test that checks the amount of vitamin K in your diet

d. a blood test that can determine if you need to be on Coumadin (warfarin)

88 %

8. Coumadin (warfarin) may be used to:

8. A varfarina pode ser usada para:

Correct answer:

a. treat people that already have a blood clot

b. treat people that have high blood sugar levels

c. treat people with high blood pressure

d. treat people with severe wounds

91 %

9. A patient with a PT/INR (“Protime”) value below their “goal range”:

9. Um paciente com o RNI abaixo da “faixa desejada”:

Correct answer:

a. is at an increase the risk of bleeding

b. is at an increase the risk of having a clot

c. is more likely to have a skin rash from the Coumadin (warfarin)

d. is more likely to experience side effects from Coumadin (warfarin)

67 %

10. Taking a medication containing aspirin or other non-steroidal anti-inflammatory medications such as ibuprofen (Motrin®/Advil®) while on Coumadin (warfarin) will:

10. Tomar um medicamento que contenha ácido acetilsalicílico (AAS) ou outros anti-inflamatórios não esteroides, como ibuprofeno, enquanto estiver tomando a varfarina irá:

Correct answer:

a. reduce the effectiveness of the Coumadin (warfarin)

b. increase your risk of bleeding from the Coumadin (warfarin)

c. cause a blood clot to form

d. require you to increase your dose of Coumadin (warfarin)

46 %

11. A person on Coumadin (warfarin) should seek immediate medical attention:

11. Uma pessoa que toma varfarina deve procurar atendimento médico imediatamente:

Correct answer:

a. if they skip more than two doses of Coumadin (warfarin) in a row

b. if they notice blood in their stool when going to the bathroom

c. if they experience a minor nosebleed

d. if they develop bruises on their arms or legs

50 %

12. Skipping even one dose of your Coumadin (warfarin) can:

12. Deixar de tomar uma única dose da varfarina pode:

Correct answer:

a. cause your PT/INR (“Protime”) to be above the “goal range”

b. increase your risk of bleeding

c. cause your PT/INR(“Protime”) to be below the “goal range”

d. decrease your risk of having a clot

58 %

13. Drinking alcohol while taking Coumadin

(warfarin):

13. Ingerir bebidas alcoólicas enquanto estiver em tratamento com a varfarina:

Correct answer:

a. is safe as long as you separate your dose of Coumadin (warfarin) and the alcohol consumption

b. may affect your PT/INR (“Protime”)

c. does not affect your PT/INR (“Protime”)

d. is safe as long as you are on a low dose

84 %

14. Once you have been stabilized on the correct dose of Coumadin (warfarin), about how often should your PT/INR (“Protime”) value be tested?

14. Uma vez que você tenha estabilizado sua dose correta da varfarina, com que frequência o valor do seu RNI deve ser testado?

Correct answer:

a. once a week

b. once a month

c. once every other month

d. once every 3 months

65 %

15. It is important for a patient on Coumadin (warfarin) to monitor for signs of bleeding:

15. É importante para um paciente em uso da varfarina estar atento a sinais de sangramento:

Correct answer:

a. only when their PT/INR (“Protime”) is above the goal range

b. at all times

c. only when their PT/INR (“Protime”) is below the goal range

d. only when you miss a dose

56 %

16. The best thing to do if you miss a dose of

Coumadin (warfarin) is to?

16. A melhor coisa a ser feita se você esquecer de tomar uma dose da varfarina é?

Correct answer:

a. double up the next day

b. take the next scheduled dose and tell your healthcare provider

c. call your healthcare provider immediately

d. discontinue Coumadin (warfarin) altogether

74 %

17. When it comes to diet, people taking Coumadin (warfarin) should:

17. Quando se trata da alimentação, as pessoas que tomam varfarina devem:

Correct answer:

a. never eat foods that contain large amounts of vitamin K

b. keep a diary of all of the foods they eat

c. be consistent and eat a diet that includes all types of food

d. increase the amount of vegetables they eat

39 %

18. Each time you get your PT/INR (“Protime”) checked, you should:

18. Cada vez que você fizer seu exame RNI, você deve:

Correct answer:

a. skip your dose of Coumadin (warfarin) on the day of the test

b. avoid eating high fat meals on the day of the test

c. avoid foods high in vitamin K on the day of the test

d. let your doctor know if you missed any doses of Coumadin (warfarin)

44 %

19. Which of the following over-the-counter products is most likely to interact with Coumadin (Warfarin)?

19. Qual dos seguintes produtos, que não precisam de receita, é mais provável de interagir com a varfarina?

Correct answer:

a. nicotine replacement therapies

b. herbal/dietary supplements

c. allergy medications

d. calcium supplements

58 %

20. A patient with a PT/INR (“Protime”) value above the “goal range”:

20. Um paciente com um valor de RNI acima da “faixa desejada”:

Correct answer:

a. is at an increased risk of having a clot

b. is more likely to have drowsiness and fatigue from Coumadin (warfarin)

c. is at an increased risk of bleeding

d. is less likely to experience side effects from Coumadin (warfarin)

73 %