CNS Pharmacology Questions Flashcards
Which of the following should be tried first for initial treatment of mild to moderate pain? A. Acetaminophen B. Fentanyl C. Ketorolac D. Tramadol E. Ibuprofen F. Aspirin
A. Acetaminophen
Which of the following is most effective for the treatment of acute musculoskeletal pain? A. Aspirin B. Acetaminophen C. Celecoxib D. Naproxen
D. Naproxen
Strong full opioid agonists are generally indicated for treatment of: A. Mild pain B. Moderate to severe pain C. Chronic lower back pain D. High fever (>105C) E. All of the above
B. Moderate to severe pain
Antidepressants and antiepileptics are commonly used to treat: A. Postherpetic neuralgia B. Diabetic nephropathy C. Fibromyalgia pain D. All of the above
D. All of the above
The mainstays of treatment for neuropathic pain syndromes are: A. Antidepressants and antipsychotics B. Antidepressants and anti-epileptics C. Opioids D. COX-2 selective NSAIDS
B. Antidepressants and anti-epileptics
A given dose of local anesthetic is generally less effective in acutely inflamed tissue than in normal tissue because in inflamed tissue:
A. The higher pH rapidly degrades the local anesthetic
B. The lower pH decreases the percentage of ionized local anesthetic (-NH3+ form)
C. The lower pH decreases the percentage of available free base (-NH2 form).
D. Increase extracellular fluid concentrates the local anesthetic
C. The lower pH decreases the percentage of available free base (-NH2 form).
Which of the following is true about local anesthetics?
A. They are weak acids
B. They are strong bases
C. They are largely in the charged cationic form at normal body pH
D. The charged form of the drug readily penetrates the cell membrane because of the presence of a hydrophilic group
E. The non-ionized form of the drug blocks the Na+ channel
C. They are largely in the charged cationic form at normal body pH`
The hallmark of use-dependent drugs, such as local anesthetics, is:
A. The more frequent the dosing, the greater their efficacy
B. The greater the probability of channels opening, the greater the degree of block
C. Their high affinity for closed (resting) ion channels
D. Their preferential action in slowly firing cells
B. The greater the probability of channels opening, the greater the degree of block
Local anesthetics exert their therapeutic effects by which one of the following nerve fiber types? (multiple correct) A. Type A-beta B. Type A-delta C. Type B D. Type C
B. Type A-delta
D. Type C
Which of the following statement concerning nerve blockade with local anesthetics is false?
A. Block is greater in small diameter fibers than in large diameter fibers
B. Block is greater in rapidly firing neurons than in more slowly firing neurons
C. Sensitivity to block is similar for pain neurons and postganglionic sympathetic neurons
D. Block is faster in onset for neurons in the center of a nerve bundle that in the periphery of bundle
D. Block is faster in onset for neurons in the center of a nerve bundle that in the periphery of bundle
Termination of the systemic action of local anesthetics:
A. Involved metabolic breakdown primarily by plasma cholinesterase for lidocaine
B. Involves vascular absorption primarily with amide type agents
C. Is enhanced in the presence of vasoconstrictors such as epinephrine with amide type agents
D. Involves metabolic breakdown primarily by plasma cholinesterase for chloroprocaine
D. Involves metabolic breakdown primarily by plasma cholinesterase for chloroprocaine
Which of the following adverse effects is associated with inadvertent IV administration of a large dose of lidocaine? A. Bronchoconstriction B. Methemoglobinemia C. Renal failure D. Seizures E. Tachycardia
D. Seizures
Which statement about the toxicity of local anesthetics is correct?
A. Bupivacaine is the safest local anesthetic to use in patients at risk for cardiac arrhythmia
B. Most local anesthetics cause vasoconstriction
C. Serious cardiac reactions are more likely to occur with lidocaine than with bupivacaine
D. Cocaine may cause cardiac arrhythmias in overdose
D. Cocaine may cause cardiac arrhythmias in overdose
Which of the following local anesthetics has the highest level of intrinsic vasodilation activity and is generally co-administered with a vasoconstrictor? A. Procaine B. Bupivacaine C. Lidocaine D. Mepivacaine
B. Bupivacaine
Long-term administration of large doses of prednisone is least likely to cause reduction in the synthesis-release of which hormone? A. Cortisol B. Corticotropin (ACTH) C. Corticotropin-releasing hormone (CRH) D. Aldosterone E. Growth hormone
D. Aldosterone
A 50y/o woman, who has been an asthmatic for the past 30yrs, presented to the ED with a 2 day history of worsening breathlessness and cough. Chest auscultation revealed bilateral polyphonic inspiratory and expiratory wheeze. Supplemental oxygen, nebulizer albuterol, and ipatropium, as well as IV methylprednisolone were administered. Which of the following is a pharmacologic effect of exogenous glucocorticoids? A. Increased muscle mass B. Hypoglycemia C. Inhibition of leukotriene synthesis D. Improved wound healing E. Increased excretion of salt and water
C. Inhibition of leukotriene synthesis
Prednisone and methylprednisolone are commonly used anti-inflammatory agents. A side effect that occurs more frequently with prednisone use than with methylprednisolone treatment is: A. Hypotension B. Increased susceptibility to infection C. Osteoporosis D. Hypokalemia
D. Hypokalemia
Intra-articular corticosteroid injections:
A. Are generally safe
B. Can cause a local post-injection inflammatory response
C. Are generally given at least 3 months apart
D. All of the above
D. All of the above
Which of the following corticosteroids can not be used for dermatological applications? A. Cortisol B. Prednisone C. Methylprednisolone D. Dexamathasone E. Triamcinolone
B. Prednisone
Which of the following patient would most likely have suppression of the HPA axis and require a slow taper of corticosteroid therapy?
A. Patient taking 40mg prednisone daily for 7 days to treat an asthma exacerbation
B. Patient taking 10mg of prednisone daily for 6 months for RA
C. Patient using fluticasone nasal spray daily for 6 months for allergic rhinitis
D. Patient receiving an intra-articular injection of methylprednisolone acetate for OA
B. Patient taking 10mg of prednisone daily for 6 months for RA
A 34y/o pregnant woman in the second trimester of pregnancy has been taking ibuprofen as adjunctive therapy for RA pain. She asks you if it could harm the baby. You could tell her that:
A. There is no evidence that ibuprofen causes fetal harm
B. Use of ibuprofen during pregnancy decreases the risk of miscarriage
C. Use of ibuprofen in 3rd trimester of pregnancy may cause premature closure of the ductus arteriosus in the neonate
D. It is safe to continue taking ibuprofen until delivery
C. Use of ibuprofen in 3rd trimester of pregnancy may cause premature closure of the ductus arteriosus in the neonate
Unlike full opioid agonists, acetaminophen and NSAIDs:
A. Have anticholinergic effects
B. Cannot be used inpatient with renal impairment
C. Have a dose ceiling on their analgesic effect
D. Are not metabolized in the liver
C. Have a dose ceiling on their analgesic effect
Which of the following statements about NSAIDs is true?
A. All NSAIDs interfere with platelet function
B. NSAIDs do not increase the risk of serious cardiovascular events
C. All NSAIDs, except celecoxib, can cause renal toxicity
D. Full doses of NSAIDs are more effective than full doses of acetaminophen for treatment of arthritis pain
D. Full doses of NSAIDs are more effective than full doses of acetaminophen for treatment of arthritis pain
A 68y/o man with chronic shoulder pain tells you he has heard favorable things from other patients about the lack of side effects with Celebrex. You could tell him that compared to non-selective NSAIDs, celecoxib appears to cause: A. Less severe GI toxicity B. An increase in bleeding time C. More cardiac toxicity D. More GI ulceration and perforation
A. Less severe GI toxicity
Which of the following NSAIDs does not interfere with platelet function and prolong bleeding time? A. Celecoxib B. Diclofenac C. Ibuprofen D. Naproxen E. All of the above
A. Celecoxib
Which of the following decreases renal blood flow and may cause hypertension and renal failure, particularly in elderly patients? (multiple correct) A. Acetaminophen B. Opioids C. Celecoxib D. Ibuprofen E. All of the above
C. Celecoxib
D. Ibuprofen
A 28y/o patient asks you what the difference is between acetaminophen and ibuprofen. You could tell her that, in comparison to NSAIDs such as ibuprofen, acetaminophen has:
A. No clinically significant anti-inflammatory activity
B. Less risk of GI side effects
C. Less risk of renal toxicity
D. All of the above
D. All of the above
Which of the following is preferred for treatment of chronic non cancer pain?
A. Mixed opioid agonist/antagonist
B. Partial opioid agonist
C. Extended-release opioid
D. Nonpharmacologic and nonopioid pharmacologic therapy
D. Nonpharmacologic and nonopioid pharmacologic therapy
Which OTC category contains agents most likely to result in additive CNS depression if given to a patient who has been prescribed opioid analgesics for pain? A. Analgesics (ibuprofen) B. Antihistamines (diphenhydramine) C. Laxatives (psyllium seed) D. H2 blockers (ranitidine) E. Antidiarrheal agents (loperamide)
B. Antihistamines (diphenhydramine)
Tolerance usually develops rapidly to most of the adverse effects of opioids except: A. Respiratory depression B. Sedation C. Constipation D. Nausea
C. Constipation
A patient who develops tolerance to a fixed dose of morphine (multiple correct):
A. Will be equally tolerant to all effects of that dose of morphine
B. Probably will be tolerant to the analgesic effect of hydrocodone
C. Often can be relieved of pain if the dose of morphine is increased
D. Will remain tolerant to that dose or morphine for greater than 3 months
B. Probably will be tolerant to the analgesic effect of hydrocodone
C. Often can be relieved of pain if the dose of morphine is increased
A young male patient is brought to the ED in an anxious and agitated state. He is subsequently determined to have signs and symptoms of the opioid abstinence syndrome. Which drug will be most effective in alleviating the symptoms experienced by this patient? A. Buprenorphine B. Codeine C. Diazepam (benzodiazepine) D. Methadone E. Tramadol
D. Methadone
Naloxone:
A. Increases the threshold for pain
B. Can help manage opioid-induced constipation
C. Antagonizes respiratory depression induced by ethanol
D. Has a longer duration of action than morphine
B. Can help manage opioid-induced constipation
Codeine and tramadol are both: A. Full opioid agonists B. Metabolized by CYP2D6 C. Contraindicated for use in children after a tonsillectomy D. All of the above
D. All of the above
A 64y/o man with metastatic lung cancer is being treated with extended-release morphine 80mg/day for severe pain. The dose has relieved his pain, but he is complaining of severe constipation. To minimize this adverse effect, he should have been treated early in his course with: A. Extended-release morphine/naltrexone B. Hydrocodone C. Stimulant or osmotic laxative D. Methadone
C. Stimulant or osmotic laxative
Which of the following statements about fentanyl is correct?
A. Causes less histamine release than morphine
B. Withdrawal symptoms can be relieved by naloxone
C. Active metabolites can cause seizures
D. 100 times more powerful than morphine
E. More effective than hydrocodone by oral route
A. Causes less histamine release than morphine
Tramadol: A. Has a dual mechanism of action B. Needs slow dose titration to improve tolerability C. Can cause seizures D. All of the above
D. All of the above
Meperidine:
A. Has a potentially toxic active metabolite
B. Should only be used for short-term treatment of moderate to severe acute pain
C. Should not be taken with a monoamine oxidase inhibitor
D. All of the above
D. All of the above
A 25y/o woman has a long history of depressive symptoms accompanied by body aches and pain secondary to a car accident 2 years ago. Physical and laboratory tests are unremarkable. Which of the following drugs might be useful in this patient? (multiple correct) A. Amitriptyline (TCAD) B. Fluoxetine (SSRI) C. Sertraline (SSRI) D. Mertazapine (a2 antagonist) E. Duloxetine (SNRI)
A. Amitriptyline (TCAD)
E. Duloxetine (SNRI)