ATI CAPSTONE PHARMACOLOGY ASSESSMENT 2 NEWEST
2026 ACTUAL EXAM COMPLETE 55 QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+.
A hospice nurse makes weekly visits to a client who has terminal cancer.
For several weeks, the client has been taking morphine sulfate for pain
relief. At today's visit, the client reports to the nurse that the usual dose of
morphine does not seem to be providing adequate pain relief. The nurse
should understand that the most likely explanation for this reduced
effectiveness is which of the following?
Correct Answer: The client has developed tolerance to the medication.
Rationale
Tolerance is a physiological phenomenon in which the client requires
progressively higher doses of a medication to achieve the same therapeutic
effect that was previously achieved with a lower dose. Opioid tolerance is
a well-documented occurrence in clients receiving long-term opioid
therapy for chronic pain management. Tolerance develops due to
neuroadaptive changes in the central nervous system, including receptor
downregulation and alterations in signal transduction pathways. The
development of tolerance does not indicate addiction or psychological
dependence; it is a physiological response that requires dose adjustment.
The nurse should assess the client's pain level, evaluate the effectiveness
of the current regimen, and collaborate with the healthcare provider to
adjust the morphine dose to maintain adequate pain control. Addiction is
characterized by compulsive drug-seeking behavior and is distinct from
tolerance.
,A nurse is talking with a client about taking an expectorant to treat a
cough. The nurse should explain that this type of medication treats coughs
through which of the following mechanisms of action?
Correct Answer: It stimulates respiratory tract secretions.
Rationale
Expectorants, such as guaifenesin, work by increasing the volume and
decreasing the viscosity of respiratory tract secretions. This mechanism
enhances the clearance of mucus from the airways through coughing,
making coughs more productive and effective in removing accumulated
secretions. By thinning the mucus, expectorants facilitate the movement of
secretions from the lower respiratory tract to the upper airways where
they can be expectorated. This action is particularly beneficial in conditions
characterized by thick, tenacious mucus, such as bronchitis, pneumonia,
and chronic obstructive pulmonary disease (COPD). Expectorants do not
suppress the cough reflex (that is the action of antitussives) but rather
make coughs more productive.
A nurse observes a parent administering a prescribed oral medication to an
infant. Which of the following actions by the parent indicates that further
instruction is needed regarding safe medication administration to an
infant?
Correct Answer: The parent positions the infant in a supine (flat on back)
position.
Rationale
Administering oral medication to an infant in a supine position increases
the risk of aspiration, as the infant's airway is less protected and the
medication may be inadvertently directed toward the trachea rather than
the esophagus. The infant should be positioned in an upright or semi-
upright position (head elevated) to facilitate safe swallowing and reduce
the risk of choking or aspiration. Additionally, the medication should be
,administered slowly using a syringe or dropper placed in the side of the
mouth between the gum and cheek, allowing the infant to swallow the
medication in small amounts. The parent should also avoid mixing the
medication with large amounts of formula or juice that the infant may not
consume completely, potentially resulting in an inaccurate dose.
A nurse is giving discharge instructions to a client who has asthma and is
about to start taking theophylline (Theo-24), a methylxanthine
bronchodilator. The nurse should tell the client that this medication might
cause which of the following adverse effects?
Correct Answer: Tachycardia
Rationale
Theophylline is a methylxanthine bronchodilator that relaxes bronchial
smooth muscle and has positive inotropic and chronotropic effects on the
heart. Cardiovascular adverse effects include tachycardia, palpitations, and
dysrhythmias. Theophylline has a narrow therapeutic range, and toxicity
can occur at serum levels only slightly above the therapeutic range. Other
common adverse effects of theophylline include nausea, vomiting,
headache, insomnia, nervousness, and gastrointestinal distress. The client
should be instructed to monitor for signs of toxicity, including persistent
tachycardia, nausea, vomiting, and seizures. Serum theophylline levels
should be monitored regularly to maintain therapeutic levels (typically 10-
20 mcg/mL) and prevent toxicity.
A nurse is talking with a client who is about to start taking allopurinol
(Zyloprim) to treat gout. Which of the following statements indicates that
the client understands how to take this medication?
Correct Answer: "I need to drink at least 3 quarts of water a day."
, Rationale
Allopurinol is a xanthine oxidase inhibitor used to treat gout by reducing
uric acid production. Adequate hydration is essential during allopurinol
therapy to prevent the formation of uric acid stones in the urinary tract.
The client should drink at least 3 quarts (approximately 3 liters) of fluid
daily to maintain adequate urine output and promote the excretion of uric
acid. This hydration recommendation helps prevent nephrolithiasis (kidney
stones), a potential complication of uric acid excretion. The nurse should
also instruct the client to take allopurinol after meals to minimize
gastrointestinal irritation and to report any signs of rash, which may
indicate hypersensitivity.
A nurse is providing teaching to a client who has hypothyroidism and has a
new prescription for levothyroxine (Synthroid). The nurse should instruct
the client to avoid which of the following herbal supplements?
Correct Answer: Soy isoflavones
Rationale
Soy isoflavones are plant-derived compounds found in soy-based products
and supplements that can interfere with the absorption of levothyroxine.
When taken concurrently, soy isoflavones bind to levothyroxine in the
gastrointestinal tract, reducing its bioavailability and potentially leading to
subtherapeutic thyroid hormone levels. The nurse should instruct the
client to avoid soy supplements and to take levothyroxine on an empty
stomach, at least 30 to 60 minutes before breakfast, to maximize
absorption. Other substances that interfere with levothyroxine absorption
include calcium supplements, iron supplements, antacids, and certain
foods such as walnuts and high-fiber foods. The client should separate the
administration of levothyroxine from these substances by at least 4 hours.
2026 ACTUAL EXAM COMPLETE 55 QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+.
A hospice nurse makes weekly visits to a client who has terminal cancer.
For several weeks, the client has been taking morphine sulfate for pain
relief. At today's visit, the client reports to the nurse that the usual dose of
morphine does not seem to be providing adequate pain relief. The nurse
should understand that the most likely explanation for this reduced
effectiveness is which of the following?
Correct Answer: The client has developed tolerance to the medication.
Rationale
Tolerance is a physiological phenomenon in which the client requires
progressively higher doses of a medication to achieve the same therapeutic
effect that was previously achieved with a lower dose. Opioid tolerance is
a well-documented occurrence in clients receiving long-term opioid
therapy for chronic pain management. Tolerance develops due to
neuroadaptive changes in the central nervous system, including receptor
downregulation and alterations in signal transduction pathways. The
development of tolerance does not indicate addiction or psychological
dependence; it is a physiological response that requires dose adjustment.
The nurse should assess the client's pain level, evaluate the effectiveness
of the current regimen, and collaborate with the healthcare provider to
adjust the morphine dose to maintain adequate pain control. Addiction is
characterized by compulsive drug-seeking behavior and is distinct from
tolerance.
,A nurse is talking with a client about taking an expectorant to treat a
cough. The nurse should explain that this type of medication treats coughs
through which of the following mechanisms of action?
Correct Answer: It stimulates respiratory tract secretions.
Rationale
Expectorants, such as guaifenesin, work by increasing the volume and
decreasing the viscosity of respiratory tract secretions. This mechanism
enhances the clearance of mucus from the airways through coughing,
making coughs more productive and effective in removing accumulated
secretions. By thinning the mucus, expectorants facilitate the movement of
secretions from the lower respiratory tract to the upper airways where
they can be expectorated. This action is particularly beneficial in conditions
characterized by thick, tenacious mucus, such as bronchitis, pneumonia,
and chronic obstructive pulmonary disease (COPD). Expectorants do not
suppress the cough reflex (that is the action of antitussives) but rather
make coughs more productive.
A nurse observes a parent administering a prescribed oral medication to an
infant. Which of the following actions by the parent indicates that further
instruction is needed regarding safe medication administration to an
infant?
Correct Answer: The parent positions the infant in a supine (flat on back)
position.
Rationale
Administering oral medication to an infant in a supine position increases
the risk of aspiration, as the infant's airway is less protected and the
medication may be inadvertently directed toward the trachea rather than
the esophagus. The infant should be positioned in an upright or semi-
upright position (head elevated) to facilitate safe swallowing and reduce
the risk of choking or aspiration. Additionally, the medication should be
,administered slowly using a syringe or dropper placed in the side of the
mouth between the gum and cheek, allowing the infant to swallow the
medication in small amounts. The parent should also avoid mixing the
medication with large amounts of formula or juice that the infant may not
consume completely, potentially resulting in an inaccurate dose.
A nurse is giving discharge instructions to a client who has asthma and is
about to start taking theophylline (Theo-24), a methylxanthine
bronchodilator. The nurse should tell the client that this medication might
cause which of the following adverse effects?
Correct Answer: Tachycardia
Rationale
Theophylline is a methylxanthine bronchodilator that relaxes bronchial
smooth muscle and has positive inotropic and chronotropic effects on the
heart. Cardiovascular adverse effects include tachycardia, palpitations, and
dysrhythmias. Theophylline has a narrow therapeutic range, and toxicity
can occur at serum levels only slightly above the therapeutic range. Other
common adverse effects of theophylline include nausea, vomiting,
headache, insomnia, nervousness, and gastrointestinal distress. The client
should be instructed to monitor for signs of toxicity, including persistent
tachycardia, nausea, vomiting, and seizures. Serum theophylline levels
should be monitored regularly to maintain therapeutic levels (typically 10-
20 mcg/mL) and prevent toxicity.
A nurse is talking with a client who is about to start taking allopurinol
(Zyloprim) to treat gout. Which of the following statements indicates that
the client understands how to take this medication?
Correct Answer: "I need to drink at least 3 quarts of water a day."
, Rationale
Allopurinol is a xanthine oxidase inhibitor used to treat gout by reducing
uric acid production. Adequate hydration is essential during allopurinol
therapy to prevent the formation of uric acid stones in the urinary tract.
The client should drink at least 3 quarts (approximately 3 liters) of fluid
daily to maintain adequate urine output and promote the excretion of uric
acid. This hydration recommendation helps prevent nephrolithiasis (kidney
stones), a potential complication of uric acid excretion. The nurse should
also instruct the client to take allopurinol after meals to minimize
gastrointestinal irritation and to report any signs of rash, which may
indicate hypersensitivity.
A nurse is providing teaching to a client who has hypothyroidism and has a
new prescription for levothyroxine (Synthroid). The nurse should instruct
the client to avoid which of the following herbal supplements?
Correct Answer: Soy isoflavones
Rationale
Soy isoflavones are plant-derived compounds found in soy-based products
and supplements that can interfere with the absorption of levothyroxine.
When taken concurrently, soy isoflavones bind to levothyroxine in the
gastrointestinal tract, reducing its bioavailability and potentially leading to
subtherapeutic thyroid hormone levels. The nurse should instruct the
client to avoid soy supplements and to take levothyroxine on an empty
stomach, at least 30 to 60 minutes before breakfast, to maximize
absorption. Other substances that interfere with levothyroxine absorption
include calcium supplements, iron supplements, antacids, and certain
foods such as walnuts and high-fiber foods. The client should separate the
administration of levothyroxine from these substances by at least 4 hours.
