NR 293 PHARMACOLOGY
Q&A
2024
1. Which of the following drugs belongs to the class of beta blockers?
a) Propranolol
b) Nifedipine
c) Captopril
d) Furosemide
Answer: a) Propranolol. Beta blockers are drugs that block the action of
beta-adrenergic receptors, which are involved in the regulation of heart
rate, blood pressure, and other functions. Propranolol is a non-selective
beta blocker that can affect both beta-1 and beta-2 receptors. Nifedipine
is a calcium channel blocker, captopril is an angiotensin-converting
enzyme inhibitor, and furosemide is a loop diuretic.
Rationale: Beta blockers are used to treat hypertension, angina,
arrhythmias, and other conditions. They can reduce the workload of the
heart and decrease oxygen demand. They can also cause side effects
such as bradycardia, hypotension, bronchoconstriction, and fatigue.
2. What is the mechanism of action of aspirin?
a) Inhibition of cyclooxygenase
b) Activation of opioid receptors
c) Blockade of histamine receptors
d) Stimulation of adrenergic receptors
Answer: a) Inhibition of cyclooxygenase. Aspirin is a non-steroidal anti-
inflammatory drug (NSAID) that inhibits the enzyme cyclooxygenase
(COX), which is responsible for the synthesis of prostaglandins and
thromboxanes. Prostaglandins and thromboxanes are involved in
,inflammation, pain, fever, and platelet aggregation. By inhibiting COX,
aspirin can reduce inflammation, pain, fever, and prevent thrombosis.
Activation of opioid receptors causes analgesia and sedation, blockade of
histamine receptors reduces allergic reactions and gastric acid secretion,
and stimulation of adrenergic receptors increases sympathetic activity.
3. Which of the following drugs is an example of a benzodiazepine?
a) Diazepam
b) Amitriptyline
c) Haloperidol
d) Phenobarbital
Answer: a) Diazepam. Benzodiazepines are drugs that enhance the
activity of gamma-aminobutyric acid (GABA), which is the main
inhibitory neurotransmitter in the central nervous system.
Benzodiazepines bind to specific sites on the GABA-A receptor complex
and increase the frequency of opening of chloride channels, resulting in
hyperpolarization and reduced excitability of neurons. Diazepam is a
benzodiazepine that can be used to treat anxiety, insomnia, seizures,
muscle spasms, and alcohol withdrawal. Amitriptyline is a tricyclic
antidepressant, haloperidol is an antipsychotic, and phenobarbital is a
barbiturate.
4. What is the main difference between morphine and codeine?
a) Morphine is more potent than codeine
b) Morphine is more addictive than codeine
c) Morphine is more effective than codeine
d) All of the above
Answer: d) All of the above. Morphine and codeine are both opioids that
act on opioid receptors to produce analgesia, euphoria, respiratory
depression, constipation, and other effects. However, morphine is more
potent than codeine, meaning that it requires a lower dose to achieve the
same effect. Morphine is also more addictive than codeine, meaning that
it has a higher potential for abuse and dependence. Morphine is also
more effective than codeine, meaning that it has a higher efficacy or
intrinsic activity at the opioid receptors.
5. Which of the following drugs is an antagonist of acetylcholine at
, muscarinic receptors?
a) Atropine
b) Neostigmine
c) Nicotine
d) Succinylcholine
Answer: a) Atropine. Acetylcholine is a neurotransmitter that binds to
two types of receptors: nicotinic and muscarinic. Nicotinic receptors are
found in skeletal muscle and autonomic ganglia, while muscarinic
receptors are found in smooth muscle, cardiac muscle, glands, and some
parts of the brain. Atropine is a drug that blocks the action of
acetylcholine at muscarinic receptors, causing effects such as dilation of
pupils, increased heart rate, decreased salivation and sweating, relaxation
of bronchi and bladder, and inhibition of gastrointestinal motility.
Atropine can be used to treat bradycardia, organophosphate poisoning, or
as a premedication for surgery. Neostigmine is a drug that inhibits the
enzyme acetylcholinesterase,
Which of the following statements best describes the purpose of patient
teaching in pharmacology?
a) To ensure patients understand the importance of taking their
medications
b) To encourage patients to self-diagnose and adjust their medication
dosages
c) To empower patients with knowledge about their medications and
potential side effects
d) To limit patients' access to information about their medications
Answer: c) To empower patients with knowledge about their
medications and potential side effects
Rationale: Patient teaching in pharmacology aims to empower patients
with the necessary knowledge to understand their medications, potential
side effects, and how to take them correctly.
When educating a patient about their newly prescribed medication, the
nurse should prioritize which of the following information?
a) The cost of the medication
Q&A
2024
1. Which of the following drugs belongs to the class of beta blockers?
a) Propranolol
b) Nifedipine
c) Captopril
d) Furosemide
Answer: a) Propranolol. Beta blockers are drugs that block the action of
beta-adrenergic receptors, which are involved in the regulation of heart
rate, blood pressure, and other functions. Propranolol is a non-selective
beta blocker that can affect both beta-1 and beta-2 receptors. Nifedipine
is a calcium channel blocker, captopril is an angiotensin-converting
enzyme inhibitor, and furosemide is a loop diuretic.
Rationale: Beta blockers are used to treat hypertension, angina,
arrhythmias, and other conditions. They can reduce the workload of the
heart and decrease oxygen demand. They can also cause side effects
such as bradycardia, hypotension, bronchoconstriction, and fatigue.
2. What is the mechanism of action of aspirin?
a) Inhibition of cyclooxygenase
b) Activation of opioid receptors
c) Blockade of histamine receptors
d) Stimulation of adrenergic receptors
Answer: a) Inhibition of cyclooxygenase. Aspirin is a non-steroidal anti-
inflammatory drug (NSAID) that inhibits the enzyme cyclooxygenase
(COX), which is responsible for the synthesis of prostaglandins and
thromboxanes. Prostaglandins and thromboxanes are involved in
,inflammation, pain, fever, and platelet aggregation. By inhibiting COX,
aspirin can reduce inflammation, pain, fever, and prevent thrombosis.
Activation of opioid receptors causes analgesia and sedation, blockade of
histamine receptors reduces allergic reactions and gastric acid secretion,
and stimulation of adrenergic receptors increases sympathetic activity.
3. Which of the following drugs is an example of a benzodiazepine?
a) Diazepam
b) Amitriptyline
c) Haloperidol
d) Phenobarbital
Answer: a) Diazepam. Benzodiazepines are drugs that enhance the
activity of gamma-aminobutyric acid (GABA), which is the main
inhibitory neurotransmitter in the central nervous system.
Benzodiazepines bind to specific sites on the GABA-A receptor complex
and increase the frequency of opening of chloride channels, resulting in
hyperpolarization and reduced excitability of neurons. Diazepam is a
benzodiazepine that can be used to treat anxiety, insomnia, seizures,
muscle spasms, and alcohol withdrawal. Amitriptyline is a tricyclic
antidepressant, haloperidol is an antipsychotic, and phenobarbital is a
barbiturate.
4. What is the main difference between morphine and codeine?
a) Morphine is more potent than codeine
b) Morphine is more addictive than codeine
c) Morphine is more effective than codeine
d) All of the above
Answer: d) All of the above. Morphine and codeine are both opioids that
act on opioid receptors to produce analgesia, euphoria, respiratory
depression, constipation, and other effects. However, morphine is more
potent than codeine, meaning that it requires a lower dose to achieve the
same effect. Morphine is also more addictive than codeine, meaning that
it has a higher potential for abuse and dependence. Morphine is also
more effective than codeine, meaning that it has a higher efficacy or
intrinsic activity at the opioid receptors.
5. Which of the following drugs is an antagonist of acetylcholine at
, muscarinic receptors?
a) Atropine
b) Neostigmine
c) Nicotine
d) Succinylcholine
Answer: a) Atropine. Acetylcholine is a neurotransmitter that binds to
two types of receptors: nicotinic and muscarinic. Nicotinic receptors are
found in skeletal muscle and autonomic ganglia, while muscarinic
receptors are found in smooth muscle, cardiac muscle, glands, and some
parts of the brain. Atropine is a drug that blocks the action of
acetylcholine at muscarinic receptors, causing effects such as dilation of
pupils, increased heart rate, decreased salivation and sweating, relaxation
of bronchi and bladder, and inhibition of gastrointestinal motility.
Atropine can be used to treat bradycardia, organophosphate poisoning, or
as a premedication for surgery. Neostigmine is a drug that inhibits the
enzyme acetylcholinesterase,
Which of the following statements best describes the purpose of patient
teaching in pharmacology?
a) To ensure patients understand the importance of taking their
medications
b) To encourage patients to self-diagnose and adjust their medication
dosages
c) To empower patients with knowledge about their medications and
potential side effects
d) To limit patients' access to information about their medications
Answer: c) To empower patients with knowledge about their
medications and potential side effects
Rationale: Patient teaching in pharmacology aims to empower patients
with the necessary knowledge to understand their medications, potential
side effects, and how to take them correctly.
When educating a patient about their newly prescribed medication, the
nurse should prioritize which of the following information?
a) The cost of the medication
