HESI_401: RN Exit Comprehensive Exam Prep
with Detailed Rationales
Course Code: HESI_401
Course Name: RN Exit Comprehensive Exam
Topic: Multi-System Comprehensive Integration Bank
Academic Year: 2026/2027
1. A nurse is assessing a client admitted with a pelvic fracture following a
motor vehicle collision. Which finding is the most critical indicator of an
internal urethral injury?
A. Ecchymosis across the lower abdominal quadrant.
B. Presence of blood at the urinary meatus and a high-riding prostate.
C. Intense pain upon gentle palpation of the iliac crest.
D. Decreased bowel sounds in all four quadrants.
CORRECT ANSWER: B. Presence of blood at the urinary meatus and a
high-riding prostate.
RATIONALE: In a client with a pelvic fracture, blood at the urinary meatus
and a high-riding prostate are classic, high-yield diagnostic markers for a
urethral tear. When these signs are present, the nurse must avoid blind urinary
catheter insertion to prevent converting a partial tear into a complete transection.
Lower abdominal ecchymosis, iliac pain, and hypoactive bowel sounds are
common with pelvic trauma but do not specifically signal a lower urinary tract
disruption.
2. A client diagnosed with major depressive disorder has been taking
phenelzine for three weeks. The client presents to the emergency
department with a throbbing occipital headache, palpitations, and a blood
pressure of 210/118 mm Hg. Which dietary indiscretion is the underlying
cause of this crisis?
A. Consuming fresh green leafy salads with vinaigrette dressing.
B. Eating aged cheeses, pepperoni pizza, and drinking red wine.
C. Consuming a breakfast consisting of whole-grain toast and pasteurized
milk.
D. Drinking commercial orange juice fortified with calcium.
, CORRECT ANSWER: B. Eating aged cheeses, pepperoni pizza, and
drinking red wine.
RATIONALE: Phenelzine is a monoamine oxidase inhibitor (MAOI).
Consuming foods high in tyramine—such as aged cheeses, cured meats
(pepperoni), and red wine—prevents the breakdown of tyramine, leading to
massive catecholamine release and a life-threatening hypertensive crisis. Fresh
vegetables, grains, pasteurized milk, and citrus juices do not contain high levels of
tyramine and are safe for clients taking MAOIs.
3. A nurse is evaluating a client who is 3 hours post-op following an
abdominal aortic aneurysm (AAA) repair. Which of the following
assessment findings represents the highest priority complication to report to
the surgeon?
A. Hypoactive bowel sounds and mild abdominal distension.
B. Urine output of 15 mL/hr for two consecutive hours and elevated
serum creatinine.
C. Pain rating of 7 out of 10 at the midline incision site.
D. Serosanguineous drainage on the surgical dressing measuring 3 cm.
CORRECT ANSWER: B. Urine output of 15 mL/hr for two consecutive
hours and elevated serum creatinine.
RATIONALE: During an AAA repair, the renal arteries are clamped or can
become occluded by thrombi or emboli, placing the client at extreme risk for acute
kidney injury (AKI). A urine output under 30 mL/hr requires immediate
notification to prevent irreversible renal failure. Hypoactive bowel sounds are an
expected post-operative paralytic ileus finding. Incisional pain and small amounts
of serosanguineous drainage are standard post-operative expectations requiring
routine management.
4. A child with tetralogy of Fallot becomes severely distressed, cyanotic, and
dyspneic during an intravenous blood draw. Which immediate nursing
action is the priority?
A. Place the child in a knee-chest position.
B. Prepare for immediate endotracheal intubation.
C. Administer a rapid intravenous bolus of normal saline.
D. Apply a cold wet compress to the child's forehead.
, CORRECT ANSWER: A. Place the child in a knee-chest position.
RATIONALE: The child is experiencing a hypercyanotic spell, or "Tet spell,"
common in tetralogy of Fallot. Placing the infant or child in a knee-chest
position increases systemic vascular resistance, which decreases the right-to-left
shunt across the ventricular septal defect, forcing more blood into the pulmonary
artery to improve oxygenation. Intubation and fluid boluses are secondary
interventions if positional rescue and supplemental oxygen fail.
5. A client with an acute exacerbation of myasthenia gravis is admitted to the
intensive care unit. Which diagnostic tool or bedside test is essential to
differentiate a myasthenic crisis from a cholinergic crisis?
A. Lumbar puncture for cerebrospinal fluid analysis.
B. Edrophonium chloride (Tensilon) test.
C. Electromyography of the lower extremities.
D. Serum acetylcholine receptor antibody assay.
CORRECT ANSWER: B. Edrophonium chloride (Tensilon) test.
RATIONALE: The edrophonium (Tensilon) test involves administering a
short-acting acetylcholinesterase inhibitor. If the client's muscle weakness
improves significantly, the diagnosis is a myasthenic crisis (requiring more
medication). If weakness worsens or fails to improve, accompanied by excessive
parasympathetic signs, it indicates a cholinergic crisis (overdose), requiring
atropine. LP, EMG, and antibody assays confirm the overall disease baseline but
do not differentiate acute crises dynamically at the bedside.
6. A client with a history of atrial fibrillation is admitted with a suspected
ischemic stroke. The provider prescribes alteplase therapy. Which
assessment finding is an absolute contraindication to the administration of
this thrombolytic medication?
A. Initial blood pressure reading of 160/90 mm Hg.
B. Manifestation of symptoms began 2 hours prior to arrival.
C. Major abdominal surgery or severe trauma within the past 14 days.
D. Platelet count of 160,000/mm³.
CORRECT ANSWER: C. Major abdominal surgery or severe trauma
within the past 14 days.
RATIONALE: Alteplase is a tissue plasminogen activator (tPA) with strict
safety guidelines. Major surgery or severe trauma within the past 14 days is an
, absolute contraindication due to the extreme risk of fatal internal hemorrhage at
the healing surgical or traumatic site. A blood pressure above 185/110 mm Hg is a
contraindication, but 160/90 is acceptable or manageable. A 2-hour symptom
window fits within the safe 3 to 4.5-hour time limit. A platelet count of 160,000 is
normal.
7. A nurse is reviewing lab values for a client with acute pancreatitis. Which
electrolyte imbalance should the nurse monitor for closely due to its
correlation with a poor prognosis and high mortality risk?
A. Hyperkalemia
B. Hyponatremia
C. Hypocalcemia
D. Hypermagnesemia
CORRECT ANSWER: C. Hypocalcemia
RATIONALE: In acute pancreatitis, enzymatic fat necrosis occurs when
released lipases combine with fatty acids, a process that binds or "saponifies"
calcium ions out of the circulation. Severe hypocalcemia (serum calcium <7.0
mg/dL) directly correlates with extensive pancreatic necrosis and represents a
critical negative prognostic indicator that requires continuous monitoring for tetany
and dysrhythmias.
8. A client is admitted with syndrome of inappropriate antidiuretic
hormone (SIADH) secondary to small cell lung carcinoma. The nurse notes
a serum sodium level of 114 mEq/L. Which intravenous fluid prescription
should the nurse anticipate?
A. 0.45% Sodium chloride (Half Normal Saline)
B. 5% Dextrose in Water (D5W)
C. 3% Hypertonic saline infused slowly via a central line.
D. Lactated Ringer's solution
CORRECT ANSWER: C. 3% Hypertonic saline infused slowly via a central
line.
RATIONALE: Severe SIADH presents with dilutional hyponatremia. When
serum sodium drops below 120 mEq/L, the client is at extreme risk for
neurological changes, seizures, and cerebral edema. Administering 3% hypertonic
saline adds solutes to the intravascular space to correct the deficit. It must be
infused slowly via a central vein to prevent central pontine myelinolysis.
with Detailed Rationales
Course Code: HESI_401
Course Name: RN Exit Comprehensive Exam
Topic: Multi-System Comprehensive Integration Bank
Academic Year: 2026/2027
1. A nurse is assessing a client admitted with a pelvic fracture following a
motor vehicle collision. Which finding is the most critical indicator of an
internal urethral injury?
A. Ecchymosis across the lower abdominal quadrant.
B. Presence of blood at the urinary meatus and a high-riding prostate.
C. Intense pain upon gentle palpation of the iliac crest.
D. Decreased bowel sounds in all four quadrants.
CORRECT ANSWER: B. Presence of blood at the urinary meatus and a
high-riding prostate.
RATIONALE: In a client with a pelvic fracture, blood at the urinary meatus
and a high-riding prostate are classic, high-yield diagnostic markers for a
urethral tear. When these signs are present, the nurse must avoid blind urinary
catheter insertion to prevent converting a partial tear into a complete transection.
Lower abdominal ecchymosis, iliac pain, and hypoactive bowel sounds are
common with pelvic trauma but do not specifically signal a lower urinary tract
disruption.
2. A client diagnosed with major depressive disorder has been taking
phenelzine for three weeks. The client presents to the emergency
department with a throbbing occipital headache, palpitations, and a blood
pressure of 210/118 mm Hg. Which dietary indiscretion is the underlying
cause of this crisis?
A. Consuming fresh green leafy salads with vinaigrette dressing.
B. Eating aged cheeses, pepperoni pizza, and drinking red wine.
C. Consuming a breakfast consisting of whole-grain toast and pasteurized
milk.
D. Drinking commercial orange juice fortified with calcium.
, CORRECT ANSWER: B. Eating aged cheeses, pepperoni pizza, and
drinking red wine.
RATIONALE: Phenelzine is a monoamine oxidase inhibitor (MAOI).
Consuming foods high in tyramine—such as aged cheeses, cured meats
(pepperoni), and red wine—prevents the breakdown of tyramine, leading to
massive catecholamine release and a life-threatening hypertensive crisis. Fresh
vegetables, grains, pasteurized milk, and citrus juices do not contain high levels of
tyramine and are safe for clients taking MAOIs.
3. A nurse is evaluating a client who is 3 hours post-op following an
abdominal aortic aneurysm (AAA) repair. Which of the following
assessment findings represents the highest priority complication to report to
the surgeon?
A. Hypoactive bowel sounds and mild abdominal distension.
B. Urine output of 15 mL/hr for two consecutive hours and elevated
serum creatinine.
C. Pain rating of 7 out of 10 at the midline incision site.
D. Serosanguineous drainage on the surgical dressing measuring 3 cm.
CORRECT ANSWER: B. Urine output of 15 mL/hr for two consecutive
hours and elevated serum creatinine.
RATIONALE: During an AAA repair, the renal arteries are clamped or can
become occluded by thrombi or emboli, placing the client at extreme risk for acute
kidney injury (AKI). A urine output under 30 mL/hr requires immediate
notification to prevent irreversible renal failure. Hypoactive bowel sounds are an
expected post-operative paralytic ileus finding. Incisional pain and small amounts
of serosanguineous drainage are standard post-operative expectations requiring
routine management.
4. A child with tetralogy of Fallot becomes severely distressed, cyanotic, and
dyspneic during an intravenous blood draw. Which immediate nursing
action is the priority?
A. Place the child in a knee-chest position.
B. Prepare for immediate endotracheal intubation.
C. Administer a rapid intravenous bolus of normal saline.
D. Apply a cold wet compress to the child's forehead.
, CORRECT ANSWER: A. Place the child in a knee-chest position.
RATIONALE: The child is experiencing a hypercyanotic spell, or "Tet spell,"
common in tetralogy of Fallot. Placing the infant or child in a knee-chest
position increases systemic vascular resistance, which decreases the right-to-left
shunt across the ventricular septal defect, forcing more blood into the pulmonary
artery to improve oxygenation. Intubation and fluid boluses are secondary
interventions if positional rescue and supplemental oxygen fail.
5. A client with an acute exacerbation of myasthenia gravis is admitted to the
intensive care unit. Which diagnostic tool or bedside test is essential to
differentiate a myasthenic crisis from a cholinergic crisis?
A. Lumbar puncture for cerebrospinal fluid analysis.
B. Edrophonium chloride (Tensilon) test.
C. Electromyography of the lower extremities.
D. Serum acetylcholine receptor antibody assay.
CORRECT ANSWER: B. Edrophonium chloride (Tensilon) test.
RATIONALE: The edrophonium (Tensilon) test involves administering a
short-acting acetylcholinesterase inhibitor. If the client's muscle weakness
improves significantly, the diagnosis is a myasthenic crisis (requiring more
medication). If weakness worsens or fails to improve, accompanied by excessive
parasympathetic signs, it indicates a cholinergic crisis (overdose), requiring
atropine. LP, EMG, and antibody assays confirm the overall disease baseline but
do not differentiate acute crises dynamically at the bedside.
6. A client with a history of atrial fibrillation is admitted with a suspected
ischemic stroke. The provider prescribes alteplase therapy. Which
assessment finding is an absolute contraindication to the administration of
this thrombolytic medication?
A. Initial blood pressure reading of 160/90 mm Hg.
B. Manifestation of symptoms began 2 hours prior to arrival.
C. Major abdominal surgery or severe trauma within the past 14 days.
D. Platelet count of 160,000/mm³.
CORRECT ANSWER: C. Major abdominal surgery or severe trauma
within the past 14 days.
RATIONALE: Alteplase is a tissue plasminogen activator (tPA) with strict
safety guidelines. Major surgery or severe trauma within the past 14 days is an
, absolute contraindication due to the extreme risk of fatal internal hemorrhage at
the healing surgical or traumatic site. A blood pressure above 185/110 mm Hg is a
contraindication, but 160/90 is acceptable or manageable. A 2-hour symptom
window fits within the safe 3 to 4.5-hour time limit. A platelet count of 160,000 is
normal.
7. A nurse is reviewing lab values for a client with acute pancreatitis. Which
electrolyte imbalance should the nurse monitor for closely due to its
correlation with a poor prognosis and high mortality risk?
A. Hyperkalemia
B. Hyponatremia
C. Hypocalcemia
D. Hypermagnesemia
CORRECT ANSWER: C. Hypocalcemia
RATIONALE: In acute pancreatitis, enzymatic fat necrosis occurs when
released lipases combine with fatty acids, a process that binds or "saponifies"
calcium ions out of the circulation. Severe hypocalcemia (serum calcium <7.0
mg/dL) directly correlates with extensive pancreatic necrosis and represents a
critical negative prognostic indicator that requires continuous monitoring for tetany
and dysrhythmias.
8. A client is admitted with syndrome of inappropriate antidiuretic
hormone (SIADH) secondary to small cell lung carcinoma. The nurse notes
a serum sodium level of 114 mEq/L. Which intravenous fluid prescription
should the nurse anticipate?
A. 0.45% Sodium chloride (Half Normal Saline)
B. 5% Dextrose in Water (D5W)
C. 3% Hypertonic saline infused slowly via a central line.
D. Lactated Ringer's solution
CORRECT ANSWER: C. 3% Hypertonic saline infused slowly via a central
line.
RATIONALE: Severe SIADH presents with dilutional hyponatremia. When
serum sodium drops below 120 mEq/L, the client is at extreme risk for
neurological changes, seizures, and cerebral edema. Administering 3% hypertonic
saline adds solutes to the intravascular space to correct the deficit. It must be
infused slowly via a central vein to prevent central pontine myelinolysis.
