2026 ATI Capstone Pharmacology 1 & 2 EXAM LATEST VERSION
EXAM WITH ACTUAL 110+ QUESTION AND CORRECT DETAILED
ANSWERS WITH RATIONALES.
A nurse is providing discharge teaching to a client who has a new
prescription for oxybutynin. Which of the following statements by the
client indicates an accurate understanding of the therapeutic regimen and
associated precautions?
• "I need to avoid jogging on warm days."
Expert Rationale:
Oxybutynin is an anticholinergic agent commonly prescribed for the
management of overactive bladder and detrusor overactivity. A paramount
concern associated with this pharmacologic class is the suppression of
sympathetic cholinergic-mediated sweating, which is a critical
thermoregulatory mechanism. By inhibiting this response, oxybutynin
significantly predisposes the client to hyperthermia, particularly during
physical exertion in warm environments. Therefore, the client's statement
regarding the avoidance of jogging on warm days demonstrates a correct
understanding of this potentially life-threatening adverse effect. The other
options, if present, would not reflect the most critical teaching point for this
medication.
A nurse is reviewing the laboratory findings for a client who is currently
undergoing therapy with zidovudine for the treatment of Human
Immunodeficiency Virus (HIV). Which of the following laboratory values
should the nurse prioritize reporting to the healthcare provider?
• Neutrophil count 650/mm³
,Expert Rationale:
Zidovudine is a nucleoside reverse transcriptase inhibitor (NRTI) that is
associated with significant bone marrow suppression, a condition known as
myelotoxicity. A primary and severe manifestation of this adverse effect is
neutropenia, which places the client at a substantial risk for opportunistic
infections. The normal reference range for a neutrophil count is generally
between 1,500 and 8,000/mm³. A value of 650/mm³ represents severe
neutropenia and constitutes a critical finding that requires immediate
notification of the provider to potentially adjust or temporarily withhold the
medication. Failure to address this can lead to life-threatening systemic
infections.
A nurse is assessing a client who is receiving gemfibrozil for the
management of hyperlipidemia. The nurse should identify which of the
following findings as an adverse effect requiring further evaluation?
• Muscle tenderness
Expert Rationale:
Gemfibrozil is a fibric acid derivative (fibrate) that effectively lowers
triglyceride levels and increases high-density lipoprotein (HDL) cholesterol.
However, a significant and potentially severe adverse effect of this
medication class is the development of myopathy, which can manifest as
muscle tenderness, weakness, or pain. This condition can progress to
rhabdomyolysis, a serious syndrome involving muscle breakdown that can
lead to acute renal failure, especially when gemfibrozil is co-administered
with statins. Therefore, the onset of muscle tenderness is a cardinal sign of
toxicity that warrants prompt assessment of creatine kinase (CK) levels and
immediate communication with the provider.
A nurse is caring for a client who has type 2 diabetes mellitus and began
therapy with metformin hydrochloride two days ago. The client reports
,experiencing nausea and diarrhea. Which of the following responses by the
nurse is the most appropriate?
• "Your symptoms are common adverse effects of metformin and should
decrease with time."
Expert Rationale:
Metformin is a biguanide antihyperglycemic agent that is first-line
pharmacotherapy for type 2 diabetes mellitus. Gastrointestinal (GI)
disturbances, including nausea, vomiting, abdominal bloating, and diarrhea,
are well-documented and very common adverse effects that occur at the
initiation of therapy. These manifestations are typically transient, self-
limiting, and often resolve spontaneously within a few weeks as the
gastrointestinal tract adjusts to the medication. This therapeutic response
reassures the client while validating their experience. If the symptoms
persist or become severe, dose titration or an extended-release formulation
may be considered, but at this early stage, providing an explanation is the
most appropriate initial intervention.
A nurse is caring for four clients who have been diagnosed with peptic
ulcer disease. The nurse should recognize that the administration of
misoprostol is contraindicated for which of the following clients?
• A client who might be pregnant
Expert Rationale:
Misoprostol is a synthetic prostaglandin E1 analog that is utilized to protect
the gastric mucosa by reducing gastric acid secretion and enhancing mucosal
blood flow. It is classified as a Pregnancy Category X medication by the FDA.
This categorization signifies that studies in animals or humans have
demonstrated fetal abnormalities, and the risks involved in the use of the
drug in pregnant women clearly outweigh any potential benefits.
Misoprostol possesses potent uterotonic properties and can stimulate
uterine contractions, thereby increasing the risk of spontaneous abortion,
, premature labor, or uterine rupture. Consequently, it is absolutely
contraindicated in pregnant clients. A negative pregnancy test must be
confirmed prior to initiation of therapy, and effective contraception must be
employed during treatment.
A nurse in the intensive care unit (ICU) is caring for a client with a sudden
onset of sustained supraventricular tachycardia (SVT). Which of the
following medications should the nurse anticipate preparing for
administration?
• Adenosine
Expert Rationale:
Adenosine is a naturally occurring purine nucleoside that acts as a potent
antiarrhythmic agent, specifically indicated for the acute management of
paroxysmal supraventricular tachycardia (PSVT), including Wolff-Parkinson-
White syndrome. Its mechanism of action involves binding to specific A1
receptors in the heart, which slows the electrical conduction velocity
through the atrioventricular (AV) node. This action prolongs the refractory
period and interrupts re-entrant pathways, effectively terminating the
tachyarrhythmia and restoring normal sinus rhythm. Its ultrashort half-life of
approximately 10 seconds makes it exceptionally safe for acute use, with any
adverse effects being rapidly self-limiting. Given its mechanism and safety
profile, adenosine is the first-line pharmacologic intervention for stable SVT
in critical care settings.
A nurse is caring for a client who has a diagnosis of varicella-zoster virus
(shingles). Which of the following medications should the nurse anticipate
administering?
• Acyclovir
EXAM WITH ACTUAL 110+ QUESTION AND CORRECT DETAILED
ANSWERS WITH RATIONALES.
A nurse is providing discharge teaching to a client who has a new
prescription for oxybutynin. Which of the following statements by the
client indicates an accurate understanding of the therapeutic regimen and
associated precautions?
• "I need to avoid jogging on warm days."
Expert Rationale:
Oxybutynin is an anticholinergic agent commonly prescribed for the
management of overactive bladder and detrusor overactivity. A paramount
concern associated with this pharmacologic class is the suppression of
sympathetic cholinergic-mediated sweating, which is a critical
thermoregulatory mechanism. By inhibiting this response, oxybutynin
significantly predisposes the client to hyperthermia, particularly during
physical exertion in warm environments. Therefore, the client's statement
regarding the avoidance of jogging on warm days demonstrates a correct
understanding of this potentially life-threatening adverse effect. The other
options, if present, would not reflect the most critical teaching point for this
medication.
A nurse is reviewing the laboratory findings for a client who is currently
undergoing therapy with zidovudine for the treatment of Human
Immunodeficiency Virus (HIV). Which of the following laboratory values
should the nurse prioritize reporting to the healthcare provider?
• Neutrophil count 650/mm³
,Expert Rationale:
Zidovudine is a nucleoside reverse transcriptase inhibitor (NRTI) that is
associated with significant bone marrow suppression, a condition known as
myelotoxicity. A primary and severe manifestation of this adverse effect is
neutropenia, which places the client at a substantial risk for opportunistic
infections. The normal reference range for a neutrophil count is generally
between 1,500 and 8,000/mm³. A value of 650/mm³ represents severe
neutropenia and constitutes a critical finding that requires immediate
notification of the provider to potentially adjust or temporarily withhold the
medication. Failure to address this can lead to life-threatening systemic
infections.
A nurse is assessing a client who is receiving gemfibrozil for the
management of hyperlipidemia. The nurse should identify which of the
following findings as an adverse effect requiring further evaluation?
• Muscle tenderness
Expert Rationale:
Gemfibrozil is a fibric acid derivative (fibrate) that effectively lowers
triglyceride levels and increases high-density lipoprotein (HDL) cholesterol.
However, a significant and potentially severe adverse effect of this
medication class is the development of myopathy, which can manifest as
muscle tenderness, weakness, or pain. This condition can progress to
rhabdomyolysis, a serious syndrome involving muscle breakdown that can
lead to acute renal failure, especially when gemfibrozil is co-administered
with statins. Therefore, the onset of muscle tenderness is a cardinal sign of
toxicity that warrants prompt assessment of creatine kinase (CK) levels and
immediate communication with the provider.
A nurse is caring for a client who has type 2 diabetes mellitus and began
therapy with metformin hydrochloride two days ago. The client reports
,experiencing nausea and diarrhea. Which of the following responses by the
nurse is the most appropriate?
• "Your symptoms are common adverse effects of metformin and should
decrease with time."
Expert Rationale:
Metformin is a biguanide antihyperglycemic agent that is first-line
pharmacotherapy for type 2 diabetes mellitus. Gastrointestinal (GI)
disturbances, including nausea, vomiting, abdominal bloating, and diarrhea,
are well-documented and very common adverse effects that occur at the
initiation of therapy. These manifestations are typically transient, self-
limiting, and often resolve spontaneously within a few weeks as the
gastrointestinal tract adjusts to the medication. This therapeutic response
reassures the client while validating their experience. If the symptoms
persist or become severe, dose titration or an extended-release formulation
may be considered, but at this early stage, providing an explanation is the
most appropriate initial intervention.
A nurse is caring for four clients who have been diagnosed with peptic
ulcer disease. The nurse should recognize that the administration of
misoprostol is contraindicated for which of the following clients?
• A client who might be pregnant
Expert Rationale:
Misoprostol is a synthetic prostaglandin E1 analog that is utilized to protect
the gastric mucosa by reducing gastric acid secretion and enhancing mucosal
blood flow. It is classified as a Pregnancy Category X medication by the FDA.
This categorization signifies that studies in animals or humans have
demonstrated fetal abnormalities, and the risks involved in the use of the
drug in pregnant women clearly outweigh any potential benefits.
Misoprostol possesses potent uterotonic properties and can stimulate
uterine contractions, thereby increasing the risk of spontaneous abortion,
, premature labor, or uterine rupture. Consequently, it is absolutely
contraindicated in pregnant clients. A negative pregnancy test must be
confirmed prior to initiation of therapy, and effective contraception must be
employed during treatment.
A nurse in the intensive care unit (ICU) is caring for a client with a sudden
onset of sustained supraventricular tachycardia (SVT). Which of the
following medications should the nurse anticipate preparing for
administration?
• Adenosine
Expert Rationale:
Adenosine is a naturally occurring purine nucleoside that acts as a potent
antiarrhythmic agent, specifically indicated for the acute management of
paroxysmal supraventricular tachycardia (PSVT), including Wolff-Parkinson-
White syndrome. Its mechanism of action involves binding to specific A1
receptors in the heart, which slows the electrical conduction velocity
through the atrioventricular (AV) node. This action prolongs the refractory
period and interrupts re-entrant pathways, effectively terminating the
tachyarrhythmia and restoring normal sinus rhythm. Its ultrashort half-life of
approximately 10 seconds makes it exceptionally safe for acute use, with any
adverse effects being rapidly self-limiting. Given its mechanism and safety
profile, adenosine is the first-line pharmacologic intervention for stable SVT
in critical care settings.
A nurse is caring for a client who has a diagnosis of varicella-zoster virus
(shingles). Which of the following medications should the nurse anticipate
administering?
• Acyclovir
