1
Santa Clara
County PACU
Nurse
Examination
Comprehensive 150-
Question Multiple-Choice
Examination a well
detailed one 2025 /
, 2
2026 written and graded
A+ upgraded
EXAM TITLE: Santa Clara County Post-Anesthesia Care Unit
Nursing Competency Examination: Advanced Perianesthesia
Practice, Critical Decision-Making, and Evidence-Based Recovery
Management for the Phase I and Phase II PACU Environment
INSTRUCTIONS
This examination consists of 150 multiple-choice questions. Select the single best
answer for each question. Questions cover anatomy and physiology, pharmacology,
patient assessment, monitoring and intervention, complications management, ethical
and legal considerations, and professional standards. A passing score of 80% (120
correct responses) is required.
, 3
SECTION A: ANATOMY, PHYSIOLOGY, AND
PATHOPHYSIOLOGY (Questions 1–25)
1. A 72-year-old patient arrives in the PACU following a 4-hour abdominal surgery.
The patient is hypotensive with a heart rate of 112 bpm and jugular venous
distention. Which pathophysiological mechanism is most likely responsible for
these findings?
A) Hypovolemic shock from third-space fluid losses
B) Cardiogenic shock from myocardial depression
C) Obstructive shock from cardiac tamponade
D) Distributive shock from sepsis
-detailed answer 100% correct :- C
Rationale: Jugular venous distention with hypotension suggests obstructive shock, most
commonly from cardiac tamponade or tension pneumothorax. Hypovolemic shock
would present with flat neck veins. Cardiogenic shock would show pulmonary edema.
Distributive shock would show warm extremities and bounding pulses.
2. In the immediate postoperative period, a patient exhibits tachypnea,
tachycardia, and confusion. Arterial blood gas reveals pH 7.28, PaCO₂ 58 mmHg,
HCO₃⁻ 24 mEq/L. What is the primary acid-base disturbance?
A) Metabolic acidosis with respiratory compensation
B) Respiratory acidosis without compensation
C) Metabolic alkalosis with respiratory compensation
D) Respiratory acidosis with partial compensation
-detailed answer 100% correct :- B
Rationale: The ABG shows pH <7.35, PaCO₂ >45 mmHg, and normal HCO₃⁻, indicating
acute respiratory acidosis without renal compensation (which takes 24-48 hours). This
presentation is concerning for hypoventilation from residual anesthetic effects or
opioid-induced respiratory depression.
, 4
3. A patient who received succinylcholine during surgery develops generalized
muscle rigidity, hyperthermia, and metabolic acidosis in the PACU. Which receptor
abnormality is the underlying cause of this condition?
A) Abnormal ryanodine receptor in skeletal muscle sarcoplasmic reticulum
B) Defective acetylcholinesterase at the neuromuscular junction
C) Malignant hyperkalemic receptor mutation in cardiac muscle
D) Abnormal GABA-A receptor in the central nervous system
-detailed answer 100% correct :- A
Rationale: Malignant hyperthermia is caused by a mutation in the ryanodine receptor
(RYR1) on skeletal muscle sarcoplasmic reticulum, leading to uncontrolled calcium
release, sustained muscle contraction, and hypermetabolism. Succinylcholine and
volatile anesthetics trigger this autosomal dominant condition.
4. Which cranial nerve is most critical to assess in the PACU patient following
thyroid surgery to prevent airway compromise?
A) Cranial Nerve VII (Facial)
B) Cranial Nerve X (Vagus)
C) Cranial Nerve IX (Glossopharyngeal)
D) Cranial Nerve XII (Hypoglossal)
-detailed answer 100% correct :- B
Rationale: The recurrent laryngeal branch of Cranial Nerve X (Vagus) innervates the
vocal cords. Injury during thyroid surgery can cause vocal cord paralysis and airway
obstruction. Assessment includes voice quality and ability to cough effectively.
5. A PACU patient has an oxygen saturation of 88% on room air, respiratory rate of
28 breaths/min, and uses accessory muscles. Which physiological mechanism best
explains the tachypnea?
A) Central chemoreceptor stimulation by decreased CSF pH
B) Peripheral chemoreceptor stimulation by hypoxemia
C) Stretch receptor inhibition in the lungs
D) Baroreceptor activation from hypotension
Santa Clara
County PACU
Nurse
Examination
Comprehensive 150-
Question Multiple-Choice
Examination a well
detailed one 2025 /
, 2
2026 written and graded
A+ upgraded
EXAM TITLE: Santa Clara County Post-Anesthesia Care Unit
Nursing Competency Examination: Advanced Perianesthesia
Practice, Critical Decision-Making, and Evidence-Based Recovery
Management for the Phase I and Phase II PACU Environment
INSTRUCTIONS
This examination consists of 150 multiple-choice questions. Select the single best
answer for each question. Questions cover anatomy and physiology, pharmacology,
patient assessment, monitoring and intervention, complications management, ethical
and legal considerations, and professional standards. A passing score of 80% (120
correct responses) is required.
, 3
SECTION A: ANATOMY, PHYSIOLOGY, AND
PATHOPHYSIOLOGY (Questions 1–25)
1. A 72-year-old patient arrives in the PACU following a 4-hour abdominal surgery.
The patient is hypotensive with a heart rate of 112 bpm and jugular venous
distention. Which pathophysiological mechanism is most likely responsible for
these findings?
A) Hypovolemic shock from third-space fluid losses
B) Cardiogenic shock from myocardial depression
C) Obstructive shock from cardiac tamponade
D) Distributive shock from sepsis
-detailed answer 100% correct :- C
Rationale: Jugular venous distention with hypotension suggests obstructive shock, most
commonly from cardiac tamponade or tension pneumothorax. Hypovolemic shock
would present with flat neck veins. Cardiogenic shock would show pulmonary edema.
Distributive shock would show warm extremities and bounding pulses.
2. In the immediate postoperative period, a patient exhibits tachypnea,
tachycardia, and confusion. Arterial blood gas reveals pH 7.28, PaCO₂ 58 mmHg,
HCO₃⁻ 24 mEq/L. What is the primary acid-base disturbance?
A) Metabolic acidosis with respiratory compensation
B) Respiratory acidosis without compensation
C) Metabolic alkalosis with respiratory compensation
D) Respiratory acidosis with partial compensation
-detailed answer 100% correct :- B
Rationale: The ABG shows pH <7.35, PaCO₂ >45 mmHg, and normal HCO₃⁻, indicating
acute respiratory acidosis without renal compensation (which takes 24-48 hours). This
presentation is concerning for hypoventilation from residual anesthetic effects or
opioid-induced respiratory depression.
, 4
3. A patient who received succinylcholine during surgery develops generalized
muscle rigidity, hyperthermia, and metabolic acidosis in the PACU. Which receptor
abnormality is the underlying cause of this condition?
A) Abnormal ryanodine receptor in skeletal muscle sarcoplasmic reticulum
B) Defective acetylcholinesterase at the neuromuscular junction
C) Malignant hyperkalemic receptor mutation in cardiac muscle
D) Abnormal GABA-A receptor in the central nervous system
-detailed answer 100% correct :- A
Rationale: Malignant hyperthermia is caused by a mutation in the ryanodine receptor
(RYR1) on skeletal muscle sarcoplasmic reticulum, leading to uncontrolled calcium
release, sustained muscle contraction, and hypermetabolism. Succinylcholine and
volatile anesthetics trigger this autosomal dominant condition.
4. Which cranial nerve is most critical to assess in the PACU patient following
thyroid surgery to prevent airway compromise?
A) Cranial Nerve VII (Facial)
B) Cranial Nerve X (Vagus)
C) Cranial Nerve IX (Glossopharyngeal)
D) Cranial Nerve XII (Hypoglossal)
-detailed answer 100% correct :- B
Rationale: The recurrent laryngeal branch of Cranial Nerve X (Vagus) innervates the
vocal cords. Injury during thyroid surgery can cause vocal cord paralysis and airway
obstruction. Assessment includes voice quality and ability to cough effectively.
5. A PACU patient has an oxygen saturation of 88% on room air, respiratory rate of
28 breaths/min, and uses accessory muscles. Which physiological mechanism best
explains the tachypnea?
A) Central chemoreceptor stimulation by decreased CSF pH
B) Peripheral chemoreceptor stimulation by hypoxemia
C) Stretch receptor inhibition in the lungs
D) Baroreceptor activation from hypotension
