Cpje Practice Exam 2026
:Questions And Answers With
Rationals/Graded A+ Update
100% Correct
🔍 How to Use This Test
SECTION 1: ANTICOAGULATION & CARDIOVASCULAR
PHARMACOLOGY
(Questions 1–15)
1. A 72-year-old man with atrial fibrillation has been stable on warfarin for two years.
His INR today is 3.8, and he is completely asymptomatic. What is the most
appropriate management?
A) Administer vitamin K 10 mg orally
B) Give fresh frozen plasma immediately
C) Hold warfarin for 1-2 days and recheck INR
D) Increase the warfarin dose
Rationale: For an asymptomatic patient with a mildly elevated INR (3.5-4.5), the
safest approach is to withhold warfarin for 1-2 days, recheck the INR, and then
resume at a slightly lower maintenance dose. Vitamin K is generally reserved for INRs
>4.5 in non-bleeding patients or any elevated INR with active bleeding. Fresh frozen
plasma is used only for life-threatening bleeding.
,2. A patient taking warfarin is prescribed trimethoprim-sulfamethoxazole (TMP-SMX)
for a urinary tract infection. Which action should the pharmacist take?
A) Dispense the antibiotic as written
B) Increase the warfarin dose
C) Alert the prescriber and recommend close INR monitoring
D) Stop the warfarin for the duration of the antibiotic
Rationale: TMP-SMX is a strong CYP2C9 inhibitor and significantly increases the INR,
dramatically raising bleeding risk. The combination requires either alternative
antibiotic selection or very close INR monitoring with possible warfarin dose
reduction. Simply dispensing without intervention is unsafe.
3. Which herb or dietary supplement is most likely to potentiate the anticoagulant
effect of warfarin?
A) St. John’s Wort
B) Garlic
C) Ginseng
D) Coenzyme Q10
Rationale: Ginseng has been shown to potentiate warfarin’s anticoagulant effect,
increasing the risk of bleeding. Conversely, St. John’s Wort induces warfarin
metabolism and reduces its effect (a dangerous interaction for different reasons).
4. A 58-year-old woman with non-valvular atrial fibrillation and a CrCl of 55 mL/min
should be anticoagulated. Which agent is preferred?
A) Warfarin (only)
B) Apixaban
C) Aspirin 325 mg daily
D) Clopidogrel
Rationale: DOACs (direct oral anticoagulants) such as apixaban, rivaroxaban, and
dabigatran are preferred over warfarin for non-valvular atrial fibrillation due to
predictable pharmacokinetics and fewer drug/food interactions. Aspirin alone is
insufficient for stroke prevention, and clopidogrel does not provide adequate
anticoagulation for Afib.
,5. Which direct oral anticoagulant (DOAC) is a direct thrombin inhibitor?
A) Apixaban
B) Rivaroxaban
C) Edoxaban
D) Dabigatran
Rationale: Dabigatran (Pradaxa ®) directly inhibits thrombin (factor IIa). Apixaban,
rivaroxaban, and edoxaban are all factor Xa inhibitors.
6. A patient taking apixaban for deep vein thrombosis calls the pharmacy and reports
noticing blood in his urine. What is the most appropriate initial advice?
A) “Stop taking apixaban immediately and come to the pharmacy.”
B) “This is a minor side effect; you can ignore it.”
C) “You should go to the emergency room or contact your prescriber right
away.”
D) “Take an extra dose of apixaban to see if it stops.”
Rationale: Blood in the urine (hematuria) is a potential sign of serious bleeding in a
patient taking any anticoagulant, including DOACs. The patient should seek
immediate medical evaluation. DOACs are not routinely stopped without medical
guidance.
7. A patient is being switched from warfarin (INR 2.5) to rivaroxaban for atrial
fibrillation. Which statement is correct?
A) Stop warfarin and start rivaroxaban immediately, regardless of INR
B) Stop warfarin and start rivaroxaban when INR is <3.0
C) Continue warfarin and add rivaroxaban for 5 days, then stop warfarin
D) Wait 2 weeks after stopping warfarin before starting rivaroxaban
Rationale: For switching from warfarin to a DOAC, the DOAC can be started once the
INR falls below 3.0 (or ≤2.5, depending on the specific DOAC). This minimizes the risk
of over-anticoagulation while providing timely protection.
, 8. A 45-year-old patient with paroxysmal atrial fibrillation and a CHA₂DS₂-VASc score
of 2 asks which anticoagulant has the lowest risk of major bleeding in older adults.
You should reply that:
A) Warfarin has the lowest bleeding risk
B) All DOACs have identical bleeding risk
C) Apixaban is associated with a lower rate of major bleeding compared to
warfarin
D) Aspirin is the safest option
Rationale: Clinical trials demonstrate that apixaban has a lower rate of major
bleeding (including intracranial hemorrhage) compared to warfarin. This makes it a
preferred choice for many patients, especially older adults.
9. A patient develops a pulmonary embolism and is started on enoxaparin
(low-molecular-weight heparin). What monitoring parameter is most important to
follow?
A) PTT daily
B) INR weekly
C) Renal function (creatinine clearance)
D) Liver enzymes
Rationale: LMWH is primarily renally excreted. In patients with reduced CrCl (<30
mL/min), dose adjustment or use of an alternative anticoagulant is often required to
avoid accumulation and bleeding risk. Unlike unfractionated heparin, routine PTT
monitoring is not needed.
10. A patient calls the pharmacy asking if they can take ibuprofen for knee pain while
on apixaban. Your correct counseling is:
A) “Yes, ibuprofen is completely safe with apixaban.”
B) “You should take ibuprofen instead of acetaminophen.”
C) “Avoid NSAIDs like ibuprofen because they increase bleeding risk.
Acetaminophen is safer.”
D) “Take ibuprofen only with food to prevent bleeding.”
:Questions And Answers With
Rationals/Graded A+ Update
100% Correct
🔍 How to Use This Test
SECTION 1: ANTICOAGULATION & CARDIOVASCULAR
PHARMACOLOGY
(Questions 1–15)
1. A 72-year-old man with atrial fibrillation has been stable on warfarin for two years.
His INR today is 3.8, and he is completely asymptomatic. What is the most
appropriate management?
A) Administer vitamin K 10 mg orally
B) Give fresh frozen plasma immediately
C) Hold warfarin for 1-2 days and recheck INR
D) Increase the warfarin dose
Rationale: For an asymptomatic patient with a mildly elevated INR (3.5-4.5), the
safest approach is to withhold warfarin for 1-2 days, recheck the INR, and then
resume at a slightly lower maintenance dose. Vitamin K is generally reserved for INRs
>4.5 in non-bleeding patients or any elevated INR with active bleeding. Fresh frozen
plasma is used only for life-threatening bleeding.
,2. A patient taking warfarin is prescribed trimethoprim-sulfamethoxazole (TMP-SMX)
for a urinary tract infection. Which action should the pharmacist take?
A) Dispense the antibiotic as written
B) Increase the warfarin dose
C) Alert the prescriber and recommend close INR monitoring
D) Stop the warfarin for the duration of the antibiotic
Rationale: TMP-SMX is a strong CYP2C9 inhibitor and significantly increases the INR,
dramatically raising bleeding risk. The combination requires either alternative
antibiotic selection or very close INR monitoring with possible warfarin dose
reduction. Simply dispensing without intervention is unsafe.
3. Which herb or dietary supplement is most likely to potentiate the anticoagulant
effect of warfarin?
A) St. John’s Wort
B) Garlic
C) Ginseng
D) Coenzyme Q10
Rationale: Ginseng has been shown to potentiate warfarin’s anticoagulant effect,
increasing the risk of bleeding. Conversely, St. John’s Wort induces warfarin
metabolism and reduces its effect (a dangerous interaction for different reasons).
4. A 58-year-old woman with non-valvular atrial fibrillation and a CrCl of 55 mL/min
should be anticoagulated. Which agent is preferred?
A) Warfarin (only)
B) Apixaban
C) Aspirin 325 mg daily
D) Clopidogrel
Rationale: DOACs (direct oral anticoagulants) such as apixaban, rivaroxaban, and
dabigatran are preferred over warfarin for non-valvular atrial fibrillation due to
predictable pharmacokinetics and fewer drug/food interactions. Aspirin alone is
insufficient for stroke prevention, and clopidogrel does not provide adequate
anticoagulation for Afib.
,5. Which direct oral anticoagulant (DOAC) is a direct thrombin inhibitor?
A) Apixaban
B) Rivaroxaban
C) Edoxaban
D) Dabigatran
Rationale: Dabigatran (Pradaxa ®) directly inhibits thrombin (factor IIa). Apixaban,
rivaroxaban, and edoxaban are all factor Xa inhibitors.
6. A patient taking apixaban for deep vein thrombosis calls the pharmacy and reports
noticing blood in his urine. What is the most appropriate initial advice?
A) “Stop taking apixaban immediately and come to the pharmacy.”
B) “This is a minor side effect; you can ignore it.”
C) “You should go to the emergency room or contact your prescriber right
away.”
D) “Take an extra dose of apixaban to see if it stops.”
Rationale: Blood in the urine (hematuria) is a potential sign of serious bleeding in a
patient taking any anticoagulant, including DOACs. The patient should seek
immediate medical evaluation. DOACs are not routinely stopped without medical
guidance.
7. A patient is being switched from warfarin (INR 2.5) to rivaroxaban for atrial
fibrillation. Which statement is correct?
A) Stop warfarin and start rivaroxaban immediately, regardless of INR
B) Stop warfarin and start rivaroxaban when INR is <3.0
C) Continue warfarin and add rivaroxaban for 5 days, then stop warfarin
D) Wait 2 weeks after stopping warfarin before starting rivaroxaban
Rationale: For switching from warfarin to a DOAC, the DOAC can be started once the
INR falls below 3.0 (or ≤2.5, depending on the specific DOAC). This minimizes the risk
of over-anticoagulation while providing timely protection.
, 8. A 45-year-old patient with paroxysmal atrial fibrillation and a CHA₂DS₂-VASc score
of 2 asks which anticoagulant has the lowest risk of major bleeding in older adults.
You should reply that:
A) Warfarin has the lowest bleeding risk
B) All DOACs have identical bleeding risk
C) Apixaban is associated with a lower rate of major bleeding compared to
warfarin
D) Aspirin is the safest option
Rationale: Clinical trials demonstrate that apixaban has a lower rate of major
bleeding (including intracranial hemorrhage) compared to warfarin. This makes it a
preferred choice for many patients, especially older adults.
9. A patient develops a pulmonary embolism and is started on enoxaparin
(low-molecular-weight heparin). What monitoring parameter is most important to
follow?
A) PTT daily
B) INR weekly
C) Renal function (creatinine clearance)
D) Liver enzymes
Rationale: LMWH is primarily renally excreted. In patients with reduced CrCl (<30
mL/min), dose adjustment or use of an alternative anticoagulant is often required to
avoid accumulation and bleeding risk. Unlike unfractionated heparin, routine PTT
monitoring is not needed.
10. A patient calls the pharmacy asking if they can take ibuprofen for knee pain while
on apixaban. Your correct counseling is:
A) “Yes, ibuprofen is completely safe with apixaban.”
B) “You should take ibuprofen instead of acetaminophen.”
C) “Avoid NSAIDs like ibuprofen because they increase bleeding risk.
Acetaminophen is safer.”
D) “Take ibuprofen only with food to prevent bleeding.”
