Fall Semester 2026–2027 ATI450 – ATI Comprehensive
Predictor Updated 2026 | 190+ Questions and Answers |
ATI450 Comprehensive Predictor Comprehensive Study Guide,
Practice Exam, Exam Prep Test Bank, Medical-Surgical
Nursing, Fundamentals of Nursing, Pharmacology, Maternal-
Newborn, Pediatrics, Mental Health, Leadership &
Management, Community Health, Clinical Judgment,
Prioritization, Delegation, Next Generation NCLEX (NGN),
Detailed Rationales and Complete Revision Material
Question 1: A nurse is providing discharge teaching to a client with a new
prescription for warfarin. Which of the following over-the-counter medications
should the nurse instruct the client to avoid due to an increased risk of
bleeding?
A. Acetaminophen
B. Ibuprofen
C. Diphenhydramine
D. Loratadine
CORRECT ANSWER: B. Ibuprofen
Rationale: Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID) that inhibits
platelet aggregation and can significantly increase the risk of gastrointestinal bleeding
when taken concurrently with warfarin, an anticoagulant. Acetaminophen is the
preferred analgesic for pain in clients taking warfarin, though liver function should be
monitored. Diphenhydramine and loratadine are antihistamines and do not have a direct
clinically significant interaction with warfarin regarding bleeding risk.
Question 2: A client in a mental health unit is exhibiting signs of serotonin
syndrome. Which of the following medication combinations is the most likely
cause?
A. Fluoxetine and trazodone
B. Haloperidol and lorazepam
C. Lithium and valproic acid
D. Bupropion and naltrexone
CORRECT ANSWER: A. Fluoxetine and trazodone
Rationale: Serotonin syndrome is caused by excessive serotonergic activity in the CNS.
The combination of fluoxetine (a selective serotonin reuptake inhibitor) and trazodone (a
serotonin antagonist and reuptake inhibitor) significantly increases synaptic serotonin
levels, posing a high risk for this syndrome. Haloperidol and lorazepam are used for
agitation and do not typically cause serotonin syndrome. Lithium and valproic acid are
mood stabilizers, and bupropion with naltrexone is used for weight loss and does not
directly cause serotonin toxicity.
,Question 3: A nurse is performing a neurological assessment on a client.
Which cranial nerve is being tested when the client is asked to identify a
familiar scent, such as coffee?
A. Cranial Nerve I (Olfactory)
B. Cranial Nerve II (Optic)
C. Cranial Nerve VII (Facial)
D. Cranial Nerve IX (Glossopharyngeal)
CORRECT ANSWER: A. Cranial Nerve I (Olfactory)
Rationale: Cranial Nerve I, the olfactory nerve, is responsible for the sense of smell.
Testing for the ability to identify familiar scents directly assesses the integrity of this
nerve. Cranial Nerve II (Optic) assesses vision. Cranial Nerve VII (Facial) controls facial
movements and taste on the anterior two-thirds of the tongue. Cranial Nerve IX
(Glossopharyngeal) is responsible for taste on the posterior one-third of the tongue and
swallowing.
Question 4: A patient is prescribed a calcium channel blocker for hypertension.
Which assessment finding is most important for the nurse to monitor related
to this medication?
A. Heart rate
B. Respiratory rate
C. Serum potassium levels
D. Deep tendon reflexes
CORRECT ANSWER: A. Heart rate
Rationale: Calcium channel blockers, such as verapamil and diltiazem, have a negative
chronotropic effect, meaning they can decrease the heart rate. The nurse should
monitor for bradycardia and hypotension. While respiratory rate is a general vital sign, it
is not the primary parameter affected. Serum potassium is more relevant for diuretics,
and deep tendon reflexes are not directly affected by this class of medications.
Question 5: A school nurse is teaching a group of adolescents about risk
factors for developing type 2 diabetes mellitus. Which of the following is a
non-modifiable risk factor?
A. Sedentary lifestyle
B. Obesity
C. Family history
D. High carbohydrate diet
CORRECT ANSWER: C. Family history
Rationale: Family history is a non-modifiable risk factor because it involves genetic
predisposition that cannot be changed by the individual. Sedentary lifestyle, obesity, and
high carbohydrate diet are all modifiable risk factors that can be addressed through
lifestyle modifications to reduce the risk of developing type 2 diabetes.
,Question 6: A client with a history of chronic obstructive pulmonary disease
(COPD) has an arterial blood gas (ABG) result showing a pH of 7.31, PaCO2 of
58 mmHg, and HCO3- of 25 mEq/L. The nurse should interpret this as which
of the following acid-base imbalances?
A. Metabolic acidosis
B. Metabolic alkalosis
C. Respiratory acidosis
D. Respiratory alkalosis
CORRECT ANSWER: C. Respiratory acidosis
Rationale: The ABG shows a low pH (acidosis) and an elevated PaCO2 (hypercapnia),
which is the primary cause of the acidosis. The HCO3- is normal, indicating no renal
compensation. This pattern is consistent with acute respiratory acidosis, commonly seen
in COPD exacerbations due to hypoventilation and CO2 retention. Metabolic acidosis
would show a low HCO3-, and respiratory alkalosis would show a low PaCO2.
Question 7: A nurse is preparing a client for electroconvulsive therapy (ECT).
Which of the following is the priority nursing action immediately prior to the
procedure?
A. Administer the prescribed muscle relaxant
B. Ensure informed consent is signed
C. Place the client on a cardiac monitor
D. Remove the client's dentures and glasses
CORRECT ANSWER: B. Ensure informed consent is signed
Rationale: While all these actions are part of ECT preparation, ensuring that informed
consent has been obtained is the priority legal and ethical responsibility of the nurse.
ECT is an invasive procedure, and the client must provide voluntary, informed consent.
Administering medication and placing monitors are clinical tasks, while removing
dentures is a safety measure; however, consent is paramount before any procedure can
proceed.
Question 8: A patient is receiving a continuous enteral feeding via a
nasogastric tube. The nurse should place the patient in which position to
reduce the risk of aspiration?
A. Supine position
B. Left lateral position
C. High-Fowler's position
D. Trendelenburg position
CORRECT ANSWER: C. High-Fowler's position
Rationale: High-Fowler's position (sitting upright at 45-90 degrees) uses gravity to help
prevent the backflow of gastric contents into the esophagus and reduces the risk of
aspiration pneumonia during continuous tube feedings. Supine and Trendelenburg
, positions increase the risk of reflux, and the left lateral position is not the standard
recommendation for all aspiration prevention in this context.
Question 9: A nurse is assessing a client with Guillain-Barré syndrome. The
nurse should prioritize monitoring for which of the following potential
complications?
A. Respiratory muscle weakness
B. Hypertension
C. Hyperglycemia
D. Urinary retention
CORRECT ANSWER: A. Respiratory muscle weakness
Rationale: Guillain-Barré syndrome is an acute autoimmune demyelinating neuropathy
that often presents with ascending paralysis. The most life-threatening complication is
weakness of the respiratory muscles, leading to respiratory failure. While hypertension,
hyperglycemia, and urinary retention can occur, they are not the immediate priority over
airway and breathing.
Question 10: A client at 12 weeks gestation is experiencing hyperemesis
gravidarum. Which of the following laboratory findings would the nurse
expect?
A. Increased serum potassium
B. Increased serum sodium
C. Decreased serum potassium
D. Decreased serum glucose
CORRECT ANSWER: C. Decreased serum potassium
Rationale: Hyperemesis gravidarum is characterized by severe, persistent vomiting
leading to dehydration and electrolyte imbalances. The loss of gastric contents, which
are rich in potassium and hydrogen ions, can lead to hypokalemia (decreased serum
potassium). Metabolic alkalosis due to the loss of hydrochloric acid is also common.
Serum sodium may be diluted, and glucose may be low due to starvation, but
hypokalemia is a hallmark sign.
Question 11: A nurse is caring for a client who has a chest tube connected to a
water-seal drainage system. Which observation indicates that the system is
functioning correctly?
A. Continuous bubbling in the water seal chamber
B. Gentle fluctuation (tidaling) in the water seal chamber with respirations
C. No fluctuation in the water seal chamber
D. Active bubbling in the suction control chamber only
CORRECT ANSWER: B. Gentle fluctuation (tidaling) in the water seal chamber
with respirations
Predictor Updated 2026 | 190+ Questions and Answers |
ATI450 Comprehensive Predictor Comprehensive Study Guide,
Practice Exam, Exam Prep Test Bank, Medical-Surgical
Nursing, Fundamentals of Nursing, Pharmacology, Maternal-
Newborn, Pediatrics, Mental Health, Leadership &
Management, Community Health, Clinical Judgment,
Prioritization, Delegation, Next Generation NCLEX (NGN),
Detailed Rationales and Complete Revision Material
Question 1: A nurse is providing discharge teaching to a client with a new
prescription for warfarin. Which of the following over-the-counter medications
should the nurse instruct the client to avoid due to an increased risk of
bleeding?
A. Acetaminophen
B. Ibuprofen
C. Diphenhydramine
D. Loratadine
CORRECT ANSWER: B. Ibuprofen
Rationale: Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID) that inhibits
platelet aggregation and can significantly increase the risk of gastrointestinal bleeding
when taken concurrently with warfarin, an anticoagulant. Acetaminophen is the
preferred analgesic for pain in clients taking warfarin, though liver function should be
monitored. Diphenhydramine and loratadine are antihistamines and do not have a direct
clinically significant interaction with warfarin regarding bleeding risk.
Question 2: A client in a mental health unit is exhibiting signs of serotonin
syndrome. Which of the following medication combinations is the most likely
cause?
A. Fluoxetine and trazodone
B. Haloperidol and lorazepam
C. Lithium and valproic acid
D. Bupropion and naltrexone
CORRECT ANSWER: A. Fluoxetine and trazodone
Rationale: Serotonin syndrome is caused by excessive serotonergic activity in the CNS.
The combination of fluoxetine (a selective serotonin reuptake inhibitor) and trazodone (a
serotonin antagonist and reuptake inhibitor) significantly increases synaptic serotonin
levels, posing a high risk for this syndrome. Haloperidol and lorazepam are used for
agitation and do not typically cause serotonin syndrome. Lithium and valproic acid are
mood stabilizers, and bupropion with naltrexone is used for weight loss and does not
directly cause serotonin toxicity.
,Question 3: A nurse is performing a neurological assessment on a client.
Which cranial nerve is being tested when the client is asked to identify a
familiar scent, such as coffee?
A. Cranial Nerve I (Olfactory)
B. Cranial Nerve II (Optic)
C. Cranial Nerve VII (Facial)
D. Cranial Nerve IX (Glossopharyngeal)
CORRECT ANSWER: A. Cranial Nerve I (Olfactory)
Rationale: Cranial Nerve I, the olfactory nerve, is responsible for the sense of smell.
Testing for the ability to identify familiar scents directly assesses the integrity of this
nerve. Cranial Nerve II (Optic) assesses vision. Cranial Nerve VII (Facial) controls facial
movements and taste on the anterior two-thirds of the tongue. Cranial Nerve IX
(Glossopharyngeal) is responsible for taste on the posterior one-third of the tongue and
swallowing.
Question 4: A patient is prescribed a calcium channel blocker for hypertension.
Which assessment finding is most important for the nurse to monitor related
to this medication?
A. Heart rate
B. Respiratory rate
C. Serum potassium levels
D. Deep tendon reflexes
CORRECT ANSWER: A. Heart rate
Rationale: Calcium channel blockers, such as verapamil and diltiazem, have a negative
chronotropic effect, meaning they can decrease the heart rate. The nurse should
monitor for bradycardia and hypotension. While respiratory rate is a general vital sign, it
is not the primary parameter affected. Serum potassium is more relevant for diuretics,
and deep tendon reflexes are not directly affected by this class of medications.
Question 5: A school nurse is teaching a group of adolescents about risk
factors for developing type 2 diabetes mellitus. Which of the following is a
non-modifiable risk factor?
A. Sedentary lifestyle
B. Obesity
C. Family history
D. High carbohydrate diet
CORRECT ANSWER: C. Family history
Rationale: Family history is a non-modifiable risk factor because it involves genetic
predisposition that cannot be changed by the individual. Sedentary lifestyle, obesity, and
high carbohydrate diet are all modifiable risk factors that can be addressed through
lifestyle modifications to reduce the risk of developing type 2 diabetes.
,Question 6: A client with a history of chronic obstructive pulmonary disease
(COPD) has an arterial blood gas (ABG) result showing a pH of 7.31, PaCO2 of
58 mmHg, and HCO3- of 25 mEq/L. The nurse should interpret this as which
of the following acid-base imbalances?
A. Metabolic acidosis
B. Metabolic alkalosis
C. Respiratory acidosis
D. Respiratory alkalosis
CORRECT ANSWER: C. Respiratory acidosis
Rationale: The ABG shows a low pH (acidosis) and an elevated PaCO2 (hypercapnia),
which is the primary cause of the acidosis. The HCO3- is normal, indicating no renal
compensation. This pattern is consistent with acute respiratory acidosis, commonly seen
in COPD exacerbations due to hypoventilation and CO2 retention. Metabolic acidosis
would show a low HCO3-, and respiratory alkalosis would show a low PaCO2.
Question 7: A nurse is preparing a client for electroconvulsive therapy (ECT).
Which of the following is the priority nursing action immediately prior to the
procedure?
A. Administer the prescribed muscle relaxant
B. Ensure informed consent is signed
C. Place the client on a cardiac monitor
D. Remove the client's dentures and glasses
CORRECT ANSWER: B. Ensure informed consent is signed
Rationale: While all these actions are part of ECT preparation, ensuring that informed
consent has been obtained is the priority legal and ethical responsibility of the nurse.
ECT is an invasive procedure, and the client must provide voluntary, informed consent.
Administering medication and placing monitors are clinical tasks, while removing
dentures is a safety measure; however, consent is paramount before any procedure can
proceed.
Question 8: A patient is receiving a continuous enteral feeding via a
nasogastric tube. The nurse should place the patient in which position to
reduce the risk of aspiration?
A. Supine position
B. Left lateral position
C. High-Fowler's position
D. Trendelenburg position
CORRECT ANSWER: C. High-Fowler's position
Rationale: High-Fowler's position (sitting upright at 45-90 degrees) uses gravity to help
prevent the backflow of gastric contents into the esophagus and reduces the risk of
aspiration pneumonia during continuous tube feedings. Supine and Trendelenburg
, positions increase the risk of reflux, and the left lateral position is not the standard
recommendation for all aspiration prevention in this context.
Question 9: A nurse is assessing a client with Guillain-Barré syndrome. The
nurse should prioritize monitoring for which of the following potential
complications?
A. Respiratory muscle weakness
B. Hypertension
C. Hyperglycemia
D. Urinary retention
CORRECT ANSWER: A. Respiratory muscle weakness
Rationale: Guillain-Barré syndrome is an acute autoimmune demyelinating neuropathy
that often presents with ascending paralysis. The most life-threatening complication is
weakness of the respiratory muscles, leading to respiratory failure. While hypertension,
hyperglycemia, and urinary retention can occur, they are not the immediate priority over
airway and breathing.
Question 10: A client at 12 weeks gestation is experiencing hyperemesis
gravidarum. Which of the following laboratory findings would the nurse
expect?
A. Increased serum potassium
B. Increased serum sodium
C. Decreased serum potassium
D. Decreased serum glucose
CORRECT ANSWER: C. Decreased serum potassium
Rationale: Hyperemesis gravidarum is characterized by severe, persistent vomiting
leading to dehydration and electrolyte imbalances. The loss of gastric contents, which
are rich in potassium and hydrogen ions, can lead to hypokalemia (decreased serum
potassium). Metabolic alkalosis due to the loss of hydrochloric acid is also common.
Serum sodium may be diluted, and glucose may be low due to starvation, but
hypokalemia is a hallmark sign.
Question 11: A nurse is caring for a client who has a chest tube connected to a
water-seal drainage system. Which observation indicates that the system is
functioning correctly?
A. Continuous bubbling in the water seal chamber
B. Gentle fluctuation (tidaling) in the water seal chamber with respirations
C. No fluctuation in the water seal chamber
D. Active bubbling in the suction control chamber only
CORRECT ANSWER: B. Gentle fluctuation (tidaling) in the water seal chamber
with respirations
