NSG 533 AdvANced PhArmAcoloGy exAm 2 module 5 PAiN
heAdAcheS ActuAl exAm 2026/2027 – comPlete exAm-Style
QueStioNS with detAiled rAtioNAleS | 100% verified – PASS
GuArANteed – A+ GrAded
**Question 1**
A patient with neuropathic pain is started on duloxetine. Which statement best explains the mechanism of action for
this indication?
A. It blocks voltage-gated sodium channels to reduce ectopic nerve firing.
B. It inhibits norepinephrine and serotonin reuptake, enhancing descending inhibitory pain pathways.
C. It acts as a weak opioid agonist at mu receptors in the central nervous system.
D. It antagonizes NMDA receptors to prevent central sensitization.
**Answer:** B. It inhibits norepinephrine and serotonin reuptake, enhancing descending inhibitory pain pathways.
**rAtioNAle:** Duloxetine is a serotonin-norepinephrine reuptake inhibitor (SNRI). In neuropathic pain, it
increases levels of both neurotransmitters in the descending spinal pathways, which inhibits pain transmission.
Options A (sodium channel blockade) describes some anticonvulsants like carbamazepine. Option C describes
tramadol or other weak opioids. Option D describes ketamine or memantine.
---
**Question 2**
A patient with frequent migraine headaches is prescribed propranolol for prevention. Which concomitant condition
would make propranolol particularly beneficial?
A. Asthma
B. Heart failure with reduced ejection fraction
C. Hypertension
D. Raynaud's phenomenon
, **Answer:** C. Hypertension
**rAtioNAle:** Propranolol is a nonselective beta-blocker used for migraine prophylaxis and is also effective for
hypertension. This dual benefit is advantageous in patients with both conditions. Asthma (A) is a contraindication due
to bronchospasm risk. Heart failure (B) may worsen with nonselective beta-blockers unless specifically tolerated.
Raynaud's (D) may be exacerbated due to peripheral vasoconstriction.
---
**Question 3**
A patient presents with sudden onset of unilateral, throbbing headache with aura, photophobia, and nausea. Which
acute pharmacologic treatment would be most appropriate if the patient has no contraindications?
A. Sumatriptan 50 mg orally
B. Propranolol 80 mg twice daily
C. Topiramate 25 mg daily
D. Ibuprofen 400 mg as needed
**Answer:** A. Sumatriptan 50 mg orally
**rAtioNAle:** The presentation is consistent with acute migraine with aura. Sumatriptan is a 5-HT1B/1D
receptor agonist that aborts an ongoing migraine. Propranolol (B) and topiramate (C) are preventive, not acute,
treatments. Ibuprofen (D) may help mild migraines but is less effective for moderate to severe migraine with aura and
does not target the underlying pathophysiology as directly as triptans.
---
**Question 4**
A patient with episodic tension-type headache reports using over-the-counter acetaminophen 1000 mg every 4 hours
for 10 days. She now has worsening daily headaches. What is the most likely diagnosis?
A. Chronic migraine without aura
B. New daily persistent headache
C. Medication-overuse headache
heAdAcheS ActuAl exAm 2026/2027 – comPlete exAm-Style
QueStioNS with detAiled rAtioNAleS | 100% verified – PASS
GuArANteed – A+ GrAded
**Question 1**
A patient with neuropathic pain is started on duloxetine. Which statement best explains the mechanism of action for
this indication?
A. It blocks voltage-gated sodium channels to reduce ectopic nerve firing.
B. It inhibits norepinephrine and serotonin reuptake, enhancing descending inhibitory pain pathways.
C. It acts as a weak opioid agonist at mu receptors in the central nervous system.
D. It antagonizes NMDA receptors to prevent central sensitization.
**Answer:** B. It inhibits norepinephrine and serotonin reuptake, enhancing descending inhibitory pain pathways.
**rAtioNAle:** Duloxetine is a serotonin-norepinephrine reuptake inhibitor (SNRI). In neuropathic pain, it
increases levels of both neurotransmitters in the descending spinal pathways, which inhibits pain transmission.
Options A (sodium channel blockade) describes some anticonvulsants like carbamazepine. Option C describes
tramadol or other weak opioids. Option D describes ketamine or memantine.
---
**Question 2**
A patient with frequent migraine headaches is prescribed propranolol for prevention. Which concomitant condition
would make propranolol particularly beneficial?
A. Asthma
B. Heart failure with reduced ejection fraction
C. Hypertension
D. Raynaud's phenomenon
, **Answer:** C. Hypertension
**rAtioNAle:** Propranolol is a nonselective beta-blocker used for migraine prophylaxis and is also effective for
hypertension. This dual benefit is advantageous in patients with both conditions. Asthma (A) is a contraindication due
to bronchospasm risk. Heart failure (B) may worsen with nonselective beta-blockers unless specifically tolerated.
Raynaud's (D) may be exacerbated due to peripheral vasoconstriction.
---
**Question 3**
A patient presents with sudden onset of unilateral, throbbing headache with aura, photophobia, and nausea. Which
acute pharmacologic treatment would be most appropriate if the patient has no contraindications?
A. Sumatriptan 50 mg orally
B. Propranolol 80 mg twice daily
C. Topiramate 25 mg daily
D. Ibuprofen 400 mg as needed
**Answer:** A. Sumatriptan 50 mg orally
**rAtioNAle:** The presentation is consistent with acute migraine with aura. Sumatriptan is a 5-HT1B/1D
receptor agonist that aborts an ongoing migraine. Propranolol (B) and topiramate (C) are preventive, not acute,
treatments. Ibuprofen (D) may help mild migraines but is less effective for moderate to severe migraine with aura and
does not target the underlying pathophysiology as directly as triptans.
---
**Question 4**
A patient with episodic tension-type headache reports using over-the-counter acetaminophen 1000 mg every 4 hours
for 10 days. She now has worsening daily headaches. What is the most likely diagnosis?
A. Chronic migraine without aura
B. New daily persistent headache
C. Medication-overuse headache
