deck_8357479 Flashcards
Which of the following types of drugs will have maximum oral bioavailability?A. Drugs with high first-pass metabolism.B. Highly hydrophilic drugs.C. Largely hydrophobic, yet soluble in aqueoussolutions.D. Chemically unstable drugs.E. Drugs that are P-glycoprotein substrates.
C. Largely hydrophobic, yet soluble in aqueoussolutions.
Which of the following is true about the blood–brain barrier?A. Endothelial cells of the blood–brain barrier have slit junctions.B. Ionized or polar drugs can cross the blood–brain barrier easily.C. Drugs cannot cross the blood–brain barrier through specific transporters.D. Lipid-soluble drugs readily cross the blood–brain barrier.E. The capillary structure of the blood–brain barrier is similar to that of the liver and spleen.
D. Lipid-soluble drugs readily cross the blood–brain barrier.
A 40-year-old male patient (70 kg) was recently diagnosed with infection involving methicillin-resistant S. aureus. He received 2000 mg of vancomycin as an IV loading dose. The peak plasma concentration of vancomycin was reported to be 28.5 mg/L. The apparent volume of distribution is:A. 1 L/kg. B. 10 L/kg. C. 7 L/kg. D. 70 L/kg. E. 14 L/kg.
A. Vd = dose/C = 2000 mg/28.5 mg/L = 70.1 L. Because the patient is 70 kg, the apparent volume of distribution in L/kg will be approximately 1 L/kg (70.1 L/70 kg).A. 1 L/kg.
A 65-year-old female patient (60 kg) with a history of ischemic stroke was prescribed clopidogrel for stroke prevention. She was hospitalized again after 6 months due to recurrent ischemic stroke. Which of the following is a likely reason she did not respond to clopidogrel therapy? She is a:A. Poor CYP2D6 metabolizer. B. Fast CYP1A2 metabolizer. C. Poor CYP2E1 metabolizer. D. Fast CYP3A4 metabolizer. E. Poor CYP2C19 metabolizer.
E. Poor CYP2C19 metabolizer.
Which of the following phase II metabolic reactions makes phase I metabolites readily excretable in urine?A. Oxidation.B. Reduction.C. Glucuronidation.D. Hydrolysis.E. Alcohol dehydrogenation.
C. Glucuronidation.
Alkalization of urine by giving bicarbonate is used to treat patients presenting with phenobarbital (weak acid) overdose. Which of the following best describes the rationale for alkalization of urine in this setting?A. To reduce tubular reabsorption of phenobarbital. B. To decrease ionization of phenobarbital.C. To increase glomerular filtration of phenobarbital. D. To decrease proximal tubular secretion.E. To increase tubular reabsorption of phenobarbital.
A. To reduce tubular reabsorption of
A drug with a half-life of 10 hours is administered by continuous intravenous infusion. Which of the following best approximates the time for the drug to reach steady state?A. 10 hours. B. 20 hours. C. 33 hours. D. 40 hours. E. 60 hours.
D. 40 hours
A 55-year-old male patient (70 kg) is going to be treated with an experimental drug, Drug X, for an irregular heart rhythm. If the V is 1 L/kg and the desired steady-state plasm concentration is 2.5 mg/L, which of the following is the most appropriate intravenous loading dose for Drug X?A. 175 mg. B. 70 mg. C. 28 mg. D. 10 mg. E. 1 mg.
A. For IV infusion, Loading dose = (Vd) × (desired steady-state plasma concentration). The Vd in this case corrected to the patient’s weight is 70 L. Thus, Loading dose = 70 L × 2.5 mg/L = 175 mg
An 18-year-old female patient is brought to the emergency department due to drug overdose. Which of the following routes of administration is the most desirable for administering the antidote for the drug overdose?A. Intramuscular. B. Subcutaneous.C. Transdermal. D. Oral.E. Intravenous.
E. Intravenous.
Chlorothiazide is a weakly acidic drug with a pKa of 6.5. If administered orally, at which of the following sites of absorption will the drug be able to readily pass through the membrane?A. Mouth (pH approximately 7.0).B. Stomach (pH of 2.5).C. Duodenum (pH approximately 6.1). D. Jejunum (pH approximately 8.0). E. Ileum (pH approximately 7.0).
B. Stomach (pH of 2.5).
Isoproterenol produces maximal contraction of cardiac muscle in a manner similar to epinephrine. Which of the following best describes isoproterenol?A. Full agonist.B. Partial agonist.C. Competitive antagonist. D. Irreversible antagonist. E. Inverse agonist.
A. Full agonist.
If 10 mg of naproxen produces the same analgesic response as 100 mg of ibuprofen, which of the following statements is correct?A. Naproxen is more efficacious than is ibuprofen.B. Naproxen is more potent than ibuprofen.C. Naproxen is a full agonist, and ibuprofen is a partialagonist.D. Naproxen is a competitive antagonist.E. Naproxen is a better drug to take for pain relief thanis ibuprofen.
B. Naproxen is more potent than ibuprofen.
If 10 mg of morphine produces a greater analgesic response than can be achieved by ibuprofen at any dose, which of the following statements is correct?A. Morphine is less efficacious than is ibuprofen.B. Morphine is less potent than is ibuprofen.C. Morphine is a full agonist, and ibuprofen is a partialagonist.D. Ibuprofen is a competitive antagonist.E. Morphine is a better drug to take for pain relief thanis ibuprofen.
E. Morphine is a better drug to take for pain relief thanis ibuprofen.
In the presence of naloxone, a higher concentration of morphine is required to elicit full pain relief. Naloxone by itself has no effect. Which of the following is correct regarding these medications?A. Naloxone is a competitive antagonist.B. Morphine is a full agonist, and naloxone is a partialagonist.C. Morphine is less efficacious than is naloxone.D. Morphine is less potent than is naloxone.E. Naloxone is a noncompetitive antagonist.
A. Naloxone is a competitive antagonist.
In the presence of pentazocine, a higher concentration of morphine is required to elicit full pain relief. Pentazocine by itself has a smaller analgesic effect than does morphine, even at the highest dose. Which of the following is correct regarding these medications?A. Pentazocine is a competitive antagonist.B. Morphine is a full agonist, and pentazocine is apartial agonist.C. Morphine is less efficacious than is pentazocine.D. Morphine is less potent than is pentazocine.E. Pentazocine is a noncompetitive antagonist.
B. Morphine is a full agonist, and pentazocine is apartial agonist.
In the presence of picrotoxin, diazepam is less efficacious at causing sedation, regardless of the dose. Picrotoxin by itself has no sedative effect even at the highest dose. Which of the following is correct?A. Picrotoxin is a competitive antagonist.B. Diazepam is a full agonist, and picrotoxin is a partialagonist.C. Diazepam is less efficacious than is picrotoxin.D. Diazepam is less potent than is picrotoxin.E. Picrotoxin is a noncompetitive antagonist.
E. Picrotoxin is a noncompetitive antagonist.
Which of the following statements most accurately describes a system having spare receptors?A. The number of spare receptors determines the maximum effect.B. Spare receptors are sequestered in the cytosol.C. A single drug–receptor interaction results in manycellular response elements being activated.D. Spare receptors are active even in the absence of anagonist.E. Agonist affinity for spare receptors is less than theiraffinity for “non-spare” receptors.
C. A single drug–receptor interaction results in manycellular response elements being activated.
Which of the following would up-regulate postsynaptic β1 adrenergic receptors?A. Daily use of amphetamine that causes norepinephrine to be released.B. A disease that causes an increase in the activity of norepinephrine neurons.C. Daily use of isoproterenol, a β1 receptor agonist.D. Daily use of formoterol, a β2 receptor agonist.E. Daily use of propranolol, a β1 receptor antagonist.
E. Daily use of propranolol, a β1 receptor antagonist.
Which of the following is correct regarding the autonomic nervous system (ANS)?A. Afferent neurons carry signals from the CNS to the effector organs.B. The neurotransmitter at the parasympathetic ganglion is norepinephrine (NE).C. The neurotransmitter at the sympathetic ganglion is acetylcholine (ACh).D. Sympathetic neurons release ACh in the effector organs.E. Parasympathetic neurons release NE in the effector organs.
C. The neurotransmitter at the sympathetic ganglion is acetylcholine (ACh).
Which of the following is correct regarding somatic motor neurons?A. The neurotransmitter at the somatic motor neuron ganglion is acetylcholine.B. The neurotransmitter at the somatic motor neuron ganglion is norepinephrine.C. Somatic motor neurons innervate smooth muscles.D. Somatic motor neurons do not have ganglia.E. Responses in the somatic motor neurons aregenerally slower than in the autonomic nervous system.
D. Somatic motor neurons do not have ganglia.
Which of the following physiological changes could happen when a person is attacked by a grizzly bear?A. Increase in heart rate.B. Increase in lacrimation (tears). C. Constriction of the pupil (miosis). D. Increase in gastric motility.
A. Increase in heart rate.
Which of the following changes could theoretically happen in a person when the parasympathetic system is inhibited using a pharmacological agent?A. Reduction in heart rate.B. Constriction of the pupil (miosis).C. Increase in gastric motility.D. Dry mouth (xerostomia).E. Contraction of detrusor muscle in the bladder.
D. Dry mouth (xerostomia).
Which of the following statements is correct regarding the sympathetic and parasympathetic systems?A. Acetylcholine activates muscarinic receptors.B. Acetylcholine activates adrenergic receptors.C. Norepinephrine activates muscarinic receptors.D. Activation of the sympathetic system causes a dropin blood pressure.
A. Acetylcholine activates muscarinic receptors.
Which of the following statements concerning the parasympathetic nervous system is correct?A. The parasympathetic system uses norepinephrine as a neurotransmitter.B. The parasympathetic system often discharges as a single, functional system.C. The parasympathetic division is involved in accommodation of near vision, movement of food, and urination.D. The postganglionic fibers of the parasympathetic division are long compared to those of the sympathetic nervous system.E. The parasympathetic system controls the secretion of the adrenal medulla.
C. The parasympathetic division is involved in accommodation of near vision, movement of food, and urination.
Which of the following is correct regarding neurotrans- mitters and neurotransmission?A. Neurotransmitters are released from the presynaptic nerve terminals.B. Neurotransmitter release is triggered by the arrival of action potentials in the postsynaptic cell.C. Intracellular calcium levels drop in the neuron before the neurotransmitter is released.D. Serotonin and dopamine are the primary neurotransmitters in the ANS.
A. Neurotransmitters are released from the presynaptic nerve terminals.
An elderly man was brought to the emergency room after he ingested a large quantity of carvedilol tablets, a drug that blocks α1, β1, and β2 adrenergic receptors, which mainly mediate the cardiovascular effects of epinephrine and norepinephrine in the body. Which of the following symptoms would you expect in this patient?A. Increased heart rate (tachycardia). B. Reduced heart rate (bradycardia). C. Dilation of the pupil (mydriasis).D. Increased blood pressure.
B. Reduced heart rate (bradycardia).
All of the following statements regarding central control of autonomic functions are correct except:A. Baroreceptors are pressure sensors located at various cardiovascular sites.B. The parasympathetic system is activated by the CNS in response to a sudden drop in blood pressure.C. The parasympathetic system is activated by the CNS in response to a sudden increase in blood pressure.D. The sympathetic system is activated by the CNS in response to a sudden drop in blood pressure.
B. The parasympathetic system is activated by the CNS in response to a sudden drop in blood pressure.
Which of the following is correct regarding membrane receptors and signal transduction?A. ANS neurotransmitters bind to membrane receptors on the effector cells, which leads to intracellular events.B. Cholinergic muscarinic receptors are examples of ionotropic receptors.C. Cholinergic nicotinic receptors are examples of metabotropic receptors.D. Metabotropic receptors activate ion channels directly.
A. ANS neurotransmitters bind to membrane receptors on the effector cells, which leads to intracellular events.
Botulinum toxin blocks the release of acetylcholine from cholinergic nerve terminals. Which of the following is a possible effect of botulinum toxin?A. Skeletal muscle paralysis.B. Improvement of myasthenia gravis symptoms. C. Increased salivation.D. Reduced heart rate.
A. Skeletal muscle paralysis.
A dentist would like to reduce salivation in a patient in preparation for an oral surgical procedure. Which of the following strategies will be useful in reducing salivation?A. Activate nicotinic receptors in the salivary glands.B. Block nicotinic receptors in the salivary glands.C. Activate muscarinic receptors in the salivaryglands.D. Block muscarinic receptors in the salivary glands.
D. Block muscarinic receptors in the salivary glands.
Which of the following is a systemic effect of a muscarinic agonist?A. Reduced heart rate (bradycardia). B. Increased blood pressure.C. Mydriasis (dilation of the pupil).D. Reduced urinary frequency.E. Constipation.
A. Reduced heart rate (bradycardia).
If an ophthalmologist wants to dilate the pupils for an eye examination, which of the following drugs/classes of drugs could be theoretically useful?A. Muscarinic receptor activator (agonist). B. Muscarinic receptor inhibitor (antagonist). C. Acetylcholine.D. Pilocarpine.E. Neostigmine.
B. Muscarinic receptor inhibitor (antagonist).
In Alzheimer’s disease, there is a deficiency of cholinergic neuronal function in the brain. Theoretically, which of the following strategies will be useful in treating the symptoms of Alzheimer’s disease?A. Inhibiting cholinergic receptors in the brain.B. Inhibiting the release of acetylcholine in the brain.C. Inhibiting the acetylcholinesterase enzyme in the brain.D. Activating the acetylcholinesterase
C. Inhibiting the acetylcholinesterase enzyme in the brain.
An elderly female who lives in a farm house was brought to the emergency room in serious condition after ingesting a liquid from an unlabeled bottle found near her bed, apparently in a suicide attempt. She presented with diarrhea, frequent urination, convulsions, breathing difficulties, constricted pupils (miosis), and excessive salivation. Which of the following is correct regarding this patient?A. She most likely consumed an organophosphate pesticide.B. The symptoms are consistent with sympathetic activation.C. Her symptoms can be treated using an anticholinesterase agent.D. Her symptoms can be treated using a cholinergic agonist.
A. She most likely consumed an organophosphate pesticide.
Sarin is a volatile nerve agent that inhibits cholinesterase enzymes. Which of the following symptoms would you expect to see in a patient exposed to sarin?A. Urinary retention.B. Tachycardia.C. Constriction of pupils (miosis). D. Dilation of the pupils (mydriasis). E. Dry mouth.
C. Constriction of pupils (miosis).
Head and neck irradiation in cancer patients can decrease salivary secretion and cause dry mouth. All of the following drugs or classes of drugs are theoretically useful in improving secretion of saliva in these patients except:A. Muscarinic antagonists.B. Muscarinic agonists.C. Anticholinesterase agents. D. Pilocarpine.E. Neostigmine.
A. Muscarinic antagonists.
Which of the following drugs or classes of drugs will be useful in treating the symptoms of myasthenia gravis?A. Nicotinic antagonists.B. Muscarinic agonists.C. Muscarinic antagonists.D. Anticholinesterase agents.
D. Anticholinesterase agents.
Atropa belladonna is a plant that contains atropine (a muscarinic antagonist). Which of the following drugs or classes of drugs will be useful in treating poisoning with belladonna?A. Malathion.B. Physostigmine.C. Muscarinic antagonists. D. Nicotinic antagonists.
B. Physostigmine.
During an ophthalmic surgical procedure, the surgeon wanted to constrict the pupil of the patient using a miotic drug. However, he accidentally used another drug that caused dilation of the pupil (mydriasis) instead. Most likely, which of the following drugs did he use?A. Acetylcholine. B. Pilocarpine. C. Tropicamide. D. Phentolamine. E. Bethanechol.
C. Tropicamide.
Sarin is a nerve gas that is an organophosphate cholinesterase inhibitor. Which of the following could be used as an antidote to sarin poisoning?A. Pilocarpine.B. Carbachol.C. Atropine.D. Physostigmine. E. Nicotine.
C. Atropine.
Atropine is one of the ingredients in the antidiarrheal combination diphenoxylate/atropine available in the United States. Which of the following effects is produced by atropine that contributes to its antidiarrheal effect?A. Increase in gastrointestinal motility. B. Reduction in gastrointestinal motility. C. Increase in salivation.D. Increase in acid secretion.
B. Reduction in gastrointestinal motility.
A patient with chronic obstructive pulmonary disease (COPD) was prescribed a β2 agonist for the relief of bronchospasm. However, the patient did not respond to this treatment. Which of the following drugs or classes of drugs would you suggest for this patient as the next option?A. β1 Agonist.B. Muscarinic agonist. C. Physostigmine.D. Ipratropium.E. Phentolamine.
D. Ipratropium.
Which of the following drugs would be the most effective anti–motion sickness drug for a person planning to go on a cruise?A. Atropine.B. Tropicamide. C. Scopolamine. D. Darifenacin. E. Tiotropium.
C. Scopolamine.
Which of the following is correct regarding ganglion- blocking drugs?A. Blockade of sympathetic ganglia could result in reduced blood pressure.B. Blockade of parasympathetic ganglia could result in reduced heart rate.C. Nicotine is a nondepolarizing ganglion blocker.D. Atropine is a nondepolarizing ganglion blocker.
A. Blockade of sympathetic ganglia could result in reduced blood pressure.
Which of the following is correct regarding the neuromuscular blockers (NMBs)?A. Nondepolarizing NMBs are administered orally.B. Cholinesterase inhibitors reduce the effects ofnondepolarizing NMBs.C. Nondepolarizing NMBs affect diaphragm musclesfirst.D. Effects of depolarizing neuromuscular blockers canbe reversed using cholinesterase inhibitors.
B. Cholinesterase inhibitors reduce the effects ofnondepolarizing NMBs.
Whichofthefollowingiscorrectregardingdruginteractions with nondepolarizing neuromuscular blockers (NMBs)?A. Desflurane reduces the effects of nondepolarizing NMBs.B. Cholinesterase inhibitors increase the effects of nondepolarizing NMBs.C. Aminoglycosides increase the effects of nondepolarizing NMBs.D. Calcium channel blockers reduce the effects of nondepolarizing NMBs.
C. Aminoglycosides increase the effects of nondepolarizing NMBs.
A patient was administered a neuromuscular blocker (NMB) prior to a surgical procedure to produce skeletal muscle paralysis. This NMB drug affected small, rapidly contracting muscles of the face and eyes first and diaphragm muscles last. The effect of this drug was easily reversed with neostigmine. Which of the following neuromuscular blockers was most likely administered to this patient?A. Rocuronium.B. Succinylcholine. C. Diazepam.D. Tubocurarine.
A. Rocuronium.
A patient was administered a neuromuscular blocker (NMB) prior to a surgical procedure to produce skeletal muscle paralysis. This NMB drug caused initial skeletal muscle fasciculations before the onset of paralysis. The effect of this drug could not be reversed with neostigmine. Which of the following neuromuscular blockers was most likely administered to this patient?A. Cisatracurium. B. Succinylcholine. C. Diazepam.D. Tubocurarine.
B. Succinylcholine.
Which of the following is correct regarding adrenergic neurotransmission?A. Epinephrine is the major neurotransmitter released from sympathetic nerve terminals.B. Norepinephrine is mainly released from the adrenal glands.C. Tricyclic antidepressants and cocaine prevent reuptake of norepinephrine into the nerve terminals.D. Monoamine oxidase (MAO) converts dopamine to norepinephrine in the nerve terminal.
C. Tricyclic antidepressants and cocaine prevent reuptake of norepinephrine into the nerve terminals.
All of the following are correct regarding adrenergic receptors, except:A. α1 Receptors are primarily located on the postsynaptic membrane in the effector organs.B. α Receptors are primarily located on the 2presynaptic sympathetic nerve terminals.C. β1 Receptors are found mainly in the heart.D. β2 Receptors are found mainly in adipose tissue.
D. β2 Receptors are found mainly in adipose tissue.
A hypertensive patient was accidentally given an α 2agonist instead of an α1 blocker. Which of the following is correct in this situation?A. α2 Agonists can increase the release of norepinephrine from sympathetic nerve terminals.B. α Agonists can reduce blood pressure in this 2patient.C. α2 Agonists can increase blood pressure in thispatient.D. α2 Agonists will not affect blood pressure in thispatient.
B. α Agonists can reduce blood pressure in this 2patient.
Which of the following is correct regarding responses mediated by adrenergic receptors?A.Stimulation of α1 receptors increases blood pressure.B.Stimulation of α receptors reduces blood pressure.C.Stimulation of sympathetic presynaptic α receptors increases norepinephrine release.D. Stimulation of β2 receptors increases heart rate (tachycardia).E. Stimulation of β2 receptors causes bronchoconstriction.
A.Stimulation of α1 receptors increases blood pressure.
An asthma patient was given a nonselective β agonist to relieve bronchoconstriction. Which of the following adverse effects would you expect to see in this patient?A. Bradycardia.B. Tachycardia.C. Hypotension (reduction in blood pressure). D. Worsening bronchoconstriction.
B. Tachycardia.
Which of the following adrenergic agonists is most likely to cause CNS side effects when administered systemically?A. Epinephrine.B. Norepinephrine. C. Isoproterenol. D. Dopamine.E. Ephedrine.
E. Ephedrine.
A 12-year-old boy who is allergic to peanuts was brought to the emergency room after accidentally consuming peanuts contained in fast food. He is in anaphylactic shock. Which of the following drugs would be most appropriate to treat this patient?A. Norepinephrine. B. Phenylephrine.C. Dobutamine.D. Epinephrine.
D. Epinephrine
A 70-year-old patient was brought to the emergency room with a blood pressure of 76/60 mm Hg, tachycardia, and low cardiac output. He was diagnosed with acute heart failure. Which of the following drugs would be the most appropriate to improve his cardiac function?A. Epinephrine. B. Fenoldopam. C. Dobutamine. D. Isoproterenol.
C. Dobutamine.
Which of the following adrenergic agonists is commonly present in nasal sprays available over-the-counter (OTC) to treat nasal congestion?A. Clonidine.B. Albuterol.C. Oxymetazoline. D. Dobutamine.E. Norepinephrine.
C. Oxymetazoline.
One of your patients who is hypertensive and gets mild asthma attacks occasionally bought an herbal remedy online to help with his asthma. He is not on any asthma medications currently but is receiving a β1-selective blocker for his hypertension. The herbal remedy seems to relieve his asthma attacks, but his blood pressure seems to increase despite the β-blocker therapy. Which of the following drugs is most likely present in the herbal remedy he is taking?A. Phenylephrine. B. Norepinephrine. C. Dobutamine.D. Ephedrine.E. Salmeterol.
D. Ephedrine.
A 60-year-old female patient started on a new antihypertensive medication recently. Her blood pressure seems to be under control, but she complains of fatigue, drowsiness, and fainting when she gets up from the bed (orthostatic hypotension). Which of the following drugs is she most likely taking?A. Metoprolol. B. Propranolol. C. Prazosin.D. Clonidine.
C. Prazosin.
A 30-year-old male patient was brought to the ER with amphetamine overdose. He presented with high blood pressure and arrhythmia. Which of the following is correct regarding this patient?A. Amphetamine can activate all types of adrenergic receptors.B. β-Blockers are the ideal antidotes for amphetamine poisoning.C. α-Blockers can normalize the blood pressure in this patient.D. Miosis could be a possible symptom of amphetamine poisoning.
A. Amphetamine can activate all types of adrenergic receptors.
A new antihypertensive drug was tested in an animal model of hypertension. The drug when given alone reduces blood pressure in the animal. Norepinephrine when given in the presence of this drug did not cause any significant change in blood pressure or heart rate in the animal. The new drug is similar to which of the following drugs in terms of its pharmacological mechanism of action?A. Prazosin.B. Clonidine. C. Propranolol. D. Metoprolol. E. Carvedilol.
E. Carvedilol.
A β-blocker was prescribed for hypertension in a female asthma patient. After about a week of treatment, the asthma attacks got worse, and the patient was asked to stop taking the β-blocker. Which of the following β-blockers would you suggest as an alternative in this patient that is less likely to worsen her asthma?A. Propranolol. B. Metoprolol. C. Labetalol. D. Carvedilol.
B. Metoprolol.
A 70-year-old male needs to be treated with an α-blocker for overflow incontinence due to his enlarged prostate. Which of the following drugs would you suggest in this patent that will not affect his blood pressure significantly?A. Prazosin.B. Doxazosin.C. Phentolamine. D. Tamsulosin.E. Terazosin.
D. Tamsulosin.
A 50-year-old male was brought to the emergency room after being stung by a hornet. The patient was found to be in anaphylactic shock, and the medical team tried to reverse the bronchoconstriction and hypotension using epinephrine. However, the patient did not fully respond to the epinephrine treatment. The patient’s wife mentioned that he is taking a prescription medication for his blood pressure, the name of which she does not remember. Which of the following medications is he most likely taking that could have prevented the effects of epinephrine?A. Doxazosin. B. Propranolol. C. Metoprolol. D. Acebutolol.
B. Propranolol.
Which of the following is correct regarding α-adrenergic blockers?A. α-Adrenergic blockers are used in the treatment of hypotension in anaphylactic shock.B. α-Adrenergic blockers are used in the treatment of benign prostatic hyperplasia (BPH).C. α-Adrenergic blockers may cause bradycardia.D. α-Adrenergic blockers are used in the treatment ofasthma.E. α-Adrenergic blockers reduce the frequency ofurination.
B. α-Adrenergic blockers are used in the treatment of benign prostatic
Which of the following is correct regarding β-blockers?A. Treatment with β-blockers should not be stopped abruptly.B. Propranolol is a cardioselective β-blocker.C. β-Blockers may cause orthostatic hypotension.D. Cardioselective β-blockers worsen asthma.E. β-Blockers decrease peripheral resistance bycausing vasorelaxation.
A. Treatment with β-blockers should not be stopped abruptly.
Which of the following drugs is commonly used topically in the treatment of glaucoma?A. Atropine.B. Timolol.C. Tropicamide. D. Scopolamine.
B. Timolol.
Which of the following is correct regarding carvedilol?A. Carvedilol is a cardioselective β-blocker.B. Carvedilol is safe for use in asthma patients.C. Carvedilol has α -blocking activity. 1D. Carvedilol is contraindicated in the treatment of stable chronic heart failure.
C. Carvedilol has α -blocking activity. 1
Which one of the following combinations of antiparkin- sonian drugs is an appropriate treatment plan?A. Amantadine, carbidopa, and entacapone. B. Levodopa, carbidopa, and entacapone. C. Pramipexole, carbidopa, and entacapone. D. Ropinirole, selegiline, and entacapone.E. Ropinirole, carbidopa, and selegiline.
B. Levodopa, carbidopa, and entacapone.
Peripheral adverse effects of levodopa, including nausea, hypotension, and cardiac arrhythmias, can be diminished by including which of the following drugs in the therapy?A. Amantadine. B. Ropinirole. C. Carbidopa. D. Tolcapone. E. Pramipexole.
C. Carbidopa.
Which of the following antiparkinsonian drugs may cause vasospasm?A. Amantadine. B. Bromocriptine. C. Carbidopa.D. Entacapone. E. Ropinirole.
B. Bromocriptine.
Modest improvement in the memory of patients with Alzheimer’s disease may occur with drugs that increase transmission at which of the following receptors?A. Adrenergic.B. Cholinergic. C. Dopaminergic. D. GABAergic. E. Serotonergic.
B. Cholinergic.
Which medication is a glutamate receptor antagonist can be used in combination with an acetylcholinesterase inhibitor to manage the symptoms of Alzheimer’s disease?A. Rivastigmine. B. Ropinirole. C. Fluoxetine. D. Memantine. E. Donepezil.
D. Memantine.
Which of the following agents is available as a patch for once-daily use and is likely to provide steady drug levels to treat Alzheimer’s disease?A. Rivastigmine. B. Donepezil. C. Memantine. D. Galantamine. E. Glatiramer.
A. Rivastigmine.
Which of the following is the only medication that is approved for the management of amyotrophic lateral sclerosis?A. Pramipexole. B. Selegiline.C. Galantamine. D. Riluzole.E. Glatiramer.
D. Riluzole.
Which of the following medications reduces immune system–mediated inflammation via inhibition of pyrimidine synthesis to reduce the number of activated lymphocytes in the CNS?A. Riluzole.B. Rotigotine.C. Teriflunomide.D. Dexamethasone.
C. Teriflunomide.
Which of the following agents may cause tremors as a side effect and, thus, should be used with caution in patients with Parkinson’s disease, even though it is also indicated for the treatment of dementia associated with Parkinson’s disease?A. Benztropine.B. Rotigotine.C. Rivastigmine.D. Dimethyl fumarate.
C. Rivastigmine
Which of the following agents exerts its therapeutic effect in multiple sclerosis via potassium channel blockade?A. Dalfampridine. B. Donepezil.C. Riluzole.D. Bromocriptine.
A. Dalfampridine.
Which one of the following statements is correct regarding benzodiazepines?A. Benzodiazepines directly open chloride channels.B. Benzodiazepines show analgesic actions.C. Clinical improvement of anxiety requires 2 to 4weeks of treatment with benzodiazepines.D. All benzodiazepines have some sedative effects.E. Benzodiazepines, like other CNS depressants,readily produce general anesthesia.
D. All benzodiazepines have some sedative effects.
Which one of the following is a short-acting hypnotic?A. Phenobarbital.B. Diazepam.C. Chlordiazepoxide. D. Triazolam.E. Flurazepam.
D. Triazolam.
Which one of the following statements is correct regarding the anxiolytic and hypnotic agents?A. Phenobarbital shows analgesic properties.B. Diazepam and phenobarbital induce the cytochromeP450 enzyme system.C. Phenobarbital is useful in the treatment of acuteintermittent porphyria.D. Phenobarbital induces respiratory depression, which is enhanced by the consumption of ethanol.E. Buspirone has actions similar to those of thebenzodiazepines.
D. Phenobarbital induces respiratory depression, which is enhanced by the consumption of ethanol.
D. Phenobarbital induces respiratory depression, which is enhanced by the consumption of ethanol.
D. Phenobarbital induces respiratory depression, which is enhanced by the consumption of ethanol.
A 45-year-old man who has been injured in a car accident is brought into the emergency room. His blood alcohol level on admission is 275 mg/dL. Hospital records show a prior hospitalization for alcohol-related seizures. His wife confirms that he has been drinking heavily for 3 weeks. What treatment should be provided to the patient if he goes into withdrawal?A. None.B. Lorazepam. C. Pentobarbital. D. Phenytoin.E. Buspirone.
B. Lorazepam.
Which one of the following is a short-acting hypnotic and better for sleep induction compared to sleep maintenance?A. Temazepam. B. Flurazepam. C. Zaleplon.D. Buspirone.E. Escitalopram.
C. Zaleplon.
Which of the following agents has a rapid anxiolytic effect and would be best for the acute management of anxiety?A. Buspirone.B. Venlafaxine. C. Lorazepam. D. Escitalopram. E. Duloxetine.
C. Lorazepam.
Which of the following sedative–hypnotic agents utilizes melatonin receptor agonism as the mechanism of action to induce sleep?A. Zolpidem.B. Eszopiclone.C. Estazolam.D. Ramelteon.E. Diphenhydramine.
D. Ramelteon.
All of the following agents for the management of insomnia are controlled substances and may have a risk for addiction or dependence except:A. Zaleplon.B. Flurazepam. C. Doxepin.D. Zolpidem. E. Triazolam.
C. Doxepin.
All of the following agents may cause cognitive impairment, including memory problems when used at recommended doses except:A. Diphenhydramine. B. Zolpidem.C. Alprazolam.D. Phenobarbital.E. Ramelteon.
E. Ramelteon.
Which agent is best used in the Emergency Room setting for patients who are believed to have received too much of a benzodiazepine drug or taken an overdose of benzodiazepines?A. Diazepam. B. Ramelteon. C. Flumazenil. D. Doxepin.E. Naloxone.
C. Flumazenil.
A 55-year-old teacher began to experience changes in mood. He was losing interest in his work and lacked the desire to play his daily tennis match. He was preoccupied with feelings of guilt, worthlessness, and hopelessness. In addition to the psychiatric symptoms, the patient complained of muscle aches throughout his body. Physical and laboratory tests were unremarkable. After 6 weeks of therapy with fluoxetine, his symptoms resolved. However, the patient complains of sexual dysfunction. Which of the following drugs might be useful in this patient?A. Fluvoxamine. B. Sertraline.C. Citalopram. D. Mirtazapine. E. Lithium.
D. Mirtazapine.
A 25-year-old woman has a long history of depressive symptoms accompanied by body aches and pain secondary to a car accident 2 years earlier. Physical and laboratory tests are unremarkable. Which of the following drugs might be useful in this patient?A. Fluoxetine. B. Sertraline. C. Phenelzine. D. Mirtazapine.E. Duloxetine.
E. Duloxetine.
A 51-year-old woman with symptoms of major depression also has angle-closure glaucoma. Which of the following antidepressants should be avoided in this patient?A. Amitriptyline. B. Sertraline.C. Bupropion. D. Mirtazapine. E. Fluvoxamine.
A. Amitriptyline.
A 36-year-old man presents with symptoms of compulsive behavior. If anything is out of order, he feels that “work will not be accomplished effectively or efficiently.” He realizes that his behavior is interfering with his ability to accomplish his daily tasks but cannot seem to stop himself. Which of the following drugs would be most helpful to this patient?A. Imipramine.B. Fluvoxamine.C. Amitriptyline.D. Tranylcypromine. E. Lithium.
B. Fluvoxamine.
Which antidepressant has, as its two proposed principle mechanisms of action, 5-HT1a receptor partial agonism and 5-HT reuptake inhibition?A. Fluoxetine. B. Aripiprazole. C. Maprotiline. D. Vilazodone. E. Mirtazapine.
D. Vilazodone.
Which antidepressant is the most sedating?A. Fluoxetine. B. Duloxetine. C. Nortriptyline. D. Citalopram. E. Venlafaxine.
C. Nortriptyline.
Which mood stabilizer is completely renally eliminated and may be beneficial for patients with hepatic impairment?A. Valproic acid.B. Carbamazepine. C. Lithium.D. Risperidone.E. Aripiprazole.
C. Lithium.
Which antidepressant has, as its two principle mechanisms of action, 5-HT2A receptor antagonism and α2 receptor antagonism?A. Fluoxetine. B. Doxepin.C. Maprotiline. D. Mirtazapine. E. Selegiline.
D. Mirtazapine.
Which agent is best known to have the side effect of decreasing the thyroid function of the patient being chronically treated with this agent?A. Carbamazepine. B. Lithium.C. Valproic acid.D. Chlorpromazine. E. Lurasidone.
B. Lithium.
Which agent would be a poor choice in a 70-year- old elderly female with depressive symptoms due to the drug having significant α1 receptor antagonism and thus a higher risk for falls due to orthostatic hypotension?A. Lithium.B. Bupropion. C. Escitalopram. D. Imipramine. E. Sertraline.
A. Lithium.
An adolescent male is newly diagnosed with schizo- phrenia. Which of the following antipsychotic agents may have the best chance to improve his apathy and blunted affect?A. Chlorpromazine. B. Fluphenazine. C. Haloperidol.D. Risperidone.E. Thioridazine.
D. Risperidone.
Which one of the following antipsychotics has been shown to be a partial agonist at the dopamine D2 receptor?A. Aripiprazole. B. Clozapine. C. Haloperidol. D. Risperidone. E. Thioridazine.
A. Aripiprazole.
A 21-year-old male has recently begun pimozide therapy for Tourette disorder. His parents bring him to the emergency department. They describe that he has been having “different-appearing tics” than before, such as prolonged contraction of the facial muscles. While being examined, he experiences opisthotonos (type of extrapyramidal spasm of the body in which the head and heels are bent backward and the body is bowed forward). Which of the following drugs would be beneficial in reducing these symptoms?A. Benztropine.B. Bromocriptine.C. Lithium.D. Prochlorperazine. E. Risperidone.
A. Benztropine.
A 28-year-old woman with schizoaffective disorder (combination of mood and psychotic symptoms) reports difficulty falling asleep. Which of the following would be most beneficial in this patient?A. Lithium.B. Chlorpromazine. C. Haloperidol.D. Paliperidone.E. Ziprasidone.
B. Chlorpromazine.
Which of the following antipsychotic agents is con- sidered to be the most potent and, thus, have the highest risk of extrapyramidal symptoms?A. Thioridazine.B. Fluphenazine. C. Quetiapine.D. Chlorpromazine. E. Clozapine.
B. Fluphenazine.
Which antipsychotic has the most sedative potential and is sometimes questionably used as a hypnotic agent in certain clinical settings?A. Fluphenazine. B. Thiothixene. C. Quetiapine. D. Haloperidol. E. Iloperidone.
C. Quetiapine.
A 30-year-old male patient who is treated with halo- peridol for his diagnosis of schizophrenia is considered to be well-managed symptomatically for his psychotic symptoms. However, he is reporting restlessness, the inability to sit still at the dinner table, and his family notices that he is pacing up and down the hallway frequently. Of the following, which is the best medication to treat this antipsychotic-induced akathisia?A. Benztropine. B. Dantrolene.C. Amoxapine.D. Bromocriptine. E. Propranolol.
E. Propranolol.
Which of the following antipsychotic agents is available in a LAI formulation that may be useful for patients with difficulty adhering to therapy?A. Asenapine.B. Chlorpromazine. C. Clozapine.D. Quetiapine.E. Risperidone.
E. Risperidone.
Which of the following antipsychotic agents is most associated with the possibility of a hematological dyscrasia such as agranulocytosis in a patient being treated for schizophrenia?A. Chlorpromazine. B. Buspirone.C. Lithium.D. Clozapine.E. Asenapine.
D. Clozapine.
Which antipsychotic agent has been most associated with significant QT interval prolongation and should be used with caution in patients with preexisting arrhythmias or patients taking other drugs associated with QT prolongation?A. Thioridazine. B. Risperidone. C. Asenapine. D. Lurasidone. E. Aripiprazole.
A. Thioridazine.
A 9-year-old boy is sent for neurologic evaluation because of episodes of apparent inattention. Over the past year, the child has experienced episodes during which he develops a blank look on his face and his eyes blink for 15 seconds. He immediately resumes his previous activity. Which one the following best describes this patient’s seizures?A. Simple partial. B. Complex partial. C. Tonic–clonic.D. Absence.E. Myoclonic.
D. Absence.
A child is experiencing absence seizures that interrupt his ability to pay attention during school and activities. Which of the following therapies would be most appropriate for this patient?A. Ethosuximide.B. Carbamazepine.C. Diazepam.D. Carbamazepine plus primidone. E. Watchful waiting.
A. Ethosuximide.
Which of the following drugs is most useful for the treatment of absence seizures?A. Topiramate.B. Tiagabine.C. Levetiracetam. D. Lamotrigine. E. Zonisamide.
D. Lamotrigine.
A 25-year-old woman with myoclonic seizures is well controlled on valproate. She indicates that she is interested in becoming pregnant in the next year. With respect to her antiepilepsy medication, which of the following should be considered?A. Leave her on her current therapy.B. Consider switching to lamotrigine.C. Consider adding a second antiepilepsy medication. D. Decrease her valproate dose.
B. Consider switching to lamotrigine.
A woman with myoclonic seizures is well controlled with lamotrigine. She becomes pregnant and begins to have breakthrough seizures. What is most likely happening?A. Her epilepsy is getting worse.B. Lamotrigine concentrations are increasing.C. Lamotrigine concentrations are decreasing.D. Lamotrigine is no longer efficacious for this patient.
C. Lamotrigine concentrations are decreasing.
A 42-year-old man undergoes a neurologic evaluation because of episodes of apparent confusion. Over the past year, the man has experienced episodes during which he develops a blank look on his face and fails to respond to questions. Moreover, it appears to take several minutes before the man recovers from the episodes. Which one of the following best describes this type of seizure?A. Focal (simple partial). B. Focal (complex partial). C. Tonic–clonic.D. Absence.E. Myoclonic.
B. Focal (complex partial).
A 52-year-old man has had several focal complex partial seizures over the last year. Which one of the following therapies would be the most appropriate initial therapy for this patient?A. Ethosuximide.B. Levetiracetam.C. Diazepam.D. Carbamazepine plus primidone. E. Watchful waiting.
B. Levetiracetam.
A patient with focal complex partial seizures has been treated for 6 months with carbamazepine but, recently, has been experiencing breakthrough seizures on a more frequent basis. You are considering adding a second drug to the antiseizure regimen. Which of the following drugs is least likely to have a pharmacokinetic interaction with carbamazepine?A. Topiramate.B. Tiagabine.C. Levetiracetam. D. Lamotrigine. E. Zonisamide.
C. Levetiracetam.
Which of the following is a first-line medication for generalized tonic–clonic seizures?A. Ethosuximide. B. Felbamate.C. Vigabatrin.D. Ezogabine.E. Topiramate.
E. Topiramate.
A 75-year-old woman had a stroke approximately 1 month ago. She is continuing to have small focal seizures where she fails to respond appropriately while talking. Which of the following is the most appropriate treatment for this individual?A. Phenytoin.B. Oxcarbazepine. C. Levetiracetam. D. Phenobarbital.
C. Levetiracetam.
Which of the following is a potent analgesic but a weak anesthetic?A. Etomidate.B. Halothane. C. Midazolam. D. Nitrous oxide. E. Thiopental.
D. Nitrous oxide.