OMSITE EXAM NEWEST 2026 ACTUAL EXAM TEST
BANK| OMSITE EXAM PREP WITH COMPLETE 650 REAL
EXAM QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) ALREADY GRADED A+ (BRAND
NEW!!)
Question 1: What type of shock in a child shows hypotension
but no compensatory tachycardia?
A. Hypovolemic shock
B. Cardiogenic shock
C. Distributive shock
D. Obstructive shock
Correct Answer: C
Rationale: In distributive shock (including neurogenic,
anaphylactic, and septic shock), children may present with
hypotension without compensatory tachycardia due to loss of
vascular tone and impaired sympathetic response. The
baroreceptor reflex is blunted because the primary problem is
vasodilation, not volume loss. This is a key distinguishing feature
from hypovolemic shock in pediatric patients .
1
,Question 2: What agent is responsible for excessive
hypotension with induction dose of propofol?
A. Beta-blocker
B. Calcium channel blocker
C. ACE inhibitor
D. Diuretic
Correct Answer: C
Rationale: ACE inhibitors block the renin-angiotensin-aldosterone
system (RAAS), impairing the body's ability to compensate for
the vasodilatory effects of propofol. The RAAS is a key
compensatory mechanism that normally activates vasoconstriction
(via angiotensin II) and volume retention (via aldosterone) during
hypotension. ACE inhibitor therapy eliminates this compensatory
pathway, leading to profound hypotension during propofol
induction .
Question 3: What causes a rise in PaCO2?
A. Hyperventilation
B. Metabolic alkalosis
2
,C. Increased cardiac output
D. Opioid-induced hypoventilation
Correct Answer: D
Rationale: Opioids depress the respiratory center in the medulla
oblongata, leading to decreased respiratory rate and tidal
volume. This hypoventilation results in CO2 retention (increased
PaCO2) and respiratory acidosis. The relationship between
alveolar ventilation and PaCO2 is inverse: as minute ventilation
decreases, PaCO2 rises proportionally .
Question 4: What is the most common pediatric airway
emergency?
A. Laryngospasm
B. Airway obstruction
C. Bronchospasm
D. Anaphylaxis
Correct Answer: B
Rationale: Airway obstruction from foreign bodies, croup, or
anaphylaxis is the most common pediatric airway emergency,
requiring immediate recognition and intervention. Children are at
3
, higher risk due to smaller airway diameter (Poiseuille's law:
resistance increases exponentially with decreasing radius) and
anatomical differences (larger tongue, more cephalic larynx,
funnel-shaped airway) .
Question 5: Benzodiazepines are known to affect the sleep
cycle in what way?
A. Increase REM sleep
B. No effect on sleep architecture
C. Reduce REM sleep
D. Only affect non-REM sleep
Correct Answer: C
Rationale: Benzodiazepines suppress REM (rapid eye movement)
sleep, which can lead to rebound REM sleep upon discontinuation
and may affect memory consolidation. Chronic benzodiazepine
use also reduces slow-wave sleep (Stage 3/N3). REM sleep is
critical for memory processing and emotional regulation; its
suppression may contribute to cognitive side effects of long-term
benzodiazepine therapy .
4
BANK| OMSITE EXAM PREP WITH COMPLETE 650 REAL
EXAM QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) ALREADY GRADED A+ (BRAND
NEW!!)
Question 1: What type of shock in a child shows hypotension
but no compensatory tachycardia?
A. Hypovolemic shock
B. Cardiogenic shock
C. Distributive shock
D. Obstructive shock
Correct Answer: C
Rationale: In distributive shock (including neurogenic,
anaphylactic, and septic shock), children may present with
hypotension without compensatory tachycardia due to loss of
vascular tone and impaired sympathetic response. The
baroreceptor reflex is blunted because the primary problem is
vasodilation, not volume loss. This is a key distinguishing feature
from hypovolemic shock in pediatric patients .
1
,Question 2: What agent is responsible for excessive
hypotension with induction dose of propofol?
A. Beta-blocker
B. Calcium channel blocker
C. ACE inhibitor
D. Diuretic
Correct Answer: C
Rationale: ACE inhibitors block the renin-angiotensin-aldosterone
system (RAAS), impairing the body's ability to compensate for
the vasodilatory effects of propofol. The RAAS is a key
compensatory mechanism that normally activates vasoconstriction
(via angiotensin II) and volume retention (via aldosterone) during
hypotension. ACE inhibitor therapy eliminates this compensatory
pathway, leading to profound hypotension during propofol
induction .
Question 3: What causes a rise in PaCO2?
A. Hyperventilation
B. Metabolic alkalosis
2
,C. Increased cardiac output
D. Opioid-induced hypoventilation
Correct Answer: D
Rationale: Opioids depress the respiratory center in the medulla
oblongata, leading to decreased respiratory rate and tidal
volume. This hypoventilation results in CO2 retention (increased
PaCO2) and respiratory acidosis. The relationship between
alveolar ventilation and PaCO2 is inverse: as minute ventilation
decreases, PaCO2 rises proportionally .
Question 4: What is the most common pediatric airway
emergency?
A. Laryngospasm
B. Airway obstruction
C. Bronchospasm
D. Anaphylaxis
Correct Answer: B
Rationale: Airway obstruction from foreign bodies, croup, or
anaphylaxis is the most common pediatric airway emergency,
requiring immediate recognition and intervention. Children are at
3
, higher risk due to smaller airway diameter (Poiseuille's law:
resistance increases exponentially with decreasing radius) and
anatomical differences (larger tongue, more cephalic larynx,
funnel-shaped airway) .
Question 5: Benzodiazepines are known to affect the sleep
cycle in what way?
A. Increase REM sleep
B. No effect on sleep architecture
C. Reduce REM sleep
D. Only affect non-REM sleep
Correct Answer: C
Rationale: Benzodiazepines suppress REM (rapid eye movement)
sleep, which can lead to rebound REM sleep upon discontinuation
and may affect memory consolidation. Chronic benzodiazepine
use also reduces slow-wave sleep (Stage 3/N3). REM sleep is
critical for memory processing and emotional regulation; its
suppression may contribute to cognitive side effects of long-term
benzodiazepine therapy .
4
