ASA103 Anesthesia/Medical SCIENCE EXAM QUESTIONS AND
CORRECT ANSWERS VEriFIED ANSWERS PLUS RAIONALES
2025/2026 Q&A | INSTANT DOWNLOAD PDF
1. Which of the following is the most important factor in assessing a patient’s airway
preoperatively?
A. Age
B. Mallampati classification
C. Gender
D. Height
Correct Answer: B. Mallampati classification — It is widely used to predict the ease of intubation
and airway management.
2. What is the primary action of propofol in anesthesia?
A. Analgesic
B. Hypnotic
C. Muscle relaxant
D. Vasoconstrictor
Correct Answer: B. Hypnotic — Propofol induces loss of consciousness rapidly but has minimal
analgesic effect.
3. Which of the following opioids has the fastest onset of action?
A. Morphine
B. Fentanyl
C. Codeine
D. Methadone
Correct Answer: B. Fentanyl — Due to its high lipid solubility, fentanyl rapidly crosses the blood-
brain barrier.
,4. What is the most common cause of intraoperative hypotension?
A. Hemorrhage
B. Myocardial infarction
C. Hypothermia
D. Anesthetic agent effect
Correct Answer: D. Anesthetic agent effect — Most general anesthetics cause vasodilation and
myocardial depression.
5. Which monitoring modality is essential for detecting hypoxemia during anesthesia?
A. ECG
B. Capnography
C. Pulse oximetry
D. Non-invasive blood pressure
Correct Answer: C. Pulse oximetry — Provides continuous monitoring of oxygen saturation in
arterial blood.
6. Which gas is commonly used for rapid induction and recovery in anesthesia?
A. Nitrous oxide
B. Oxygen
C. Helium
D. Carbon dioxide
Correct Answer: A. Nitrous oxide — It is low in blood solubility, allowing fast onset and recovery.
7. Which of the following is a contraindication for spinal anesthesia?
A. Obesity
B. Local infection at injection site
C. Patient anxiety
D. Age over 70
Correct Answer: B. Local infection at injection site — Risk of introducing pathogens into the CNS.
8. Which muscle relaxant is most suitable for rapid sequence induction?
A. Vecuronium
, B. Succinylcholine
C. Rocuronium (standard dose)
D. Atracurium
Correct Answer: B. Succinylcholine — Has ultra-rapid onset, ideal for securing airway quickly.
9. During anesthesia, a sudden rise in end-tidal CO₂ may indicate:
A. Hypoventilation
B. Malignant hyperthermia
C. Airway obstruction
D. Hypothermia
Correct Answer: B. Malignant hyperthermia — Characterized by hypermetabolism and rapid CO₂
rise.
10. The ASA physical status classification system is used to:
A. Predict intraoperative complications
B. Determine anesthetic drug dose
C. Measure oxygen saturation
D. Monitor heart rate
Correct Answer: A. Predict intraoperative complications — ASA classification helps assess
perioperative risk.
11. Which anesthetic agent can trigger malignant hyperthermia?
A. Isoflurane
B. Propofol
C. Midazolam
D. Fentanyl
Correct Answer: A. Isoflurane — Volatile anesthetics and succinylcholine are known triggers.
12. The minimum fasting period before elective surgery for clear liquids is:
A. 2 hours
B. 4 hours
CORRECT ANSWERS VEriFIED ANSWERS PLUS RAIONALES
2025/2026 Q&A | INSTANT DOWNLOAD PDF
1. Which of the following is the most important factor in assessing a patient’s airway
preoperatively?
A. Age
B. Mallampati classification
C. Gender
D. Height
Correct Answer: B. Mallampati classification — It is widely used to predict the ease of intubation
and airway management.
2. What is the primary action of propofol in anesthesia?
A. Analgesic
B. Hypnotic
C. Muscle relaxant
D. Vasoconstrictor
Correct Answer: B. Hypnotic — Propofol induces loss of consciousness rapidly but has minimal
analgesic effect.
3. Which of the following opioids has the fastest onset of action?
A. Morphine
B. Fentanyl
C. Codeine
D. Methadone
Correct Answer: B. Fentanyl — Due to its high lipid solubility, fentanyl rapidly crosses the blood-
brain barrier.
,4. What is the most common cause of intraoperative hypotension?
A. Hemorrhage
B. Myocardial infarction
C. Hypothermia
D. Anesthetic agent effect
Correct Answer: D. Anesthetic agent effect — Most general anesthetics cause vasodilation and
myocardial depression.
5. Which monitoring modality is essential for detecting hypoxemia during anesthesia?
A. ECG
B. Capnography
C. Pulse oximetry
D. Non-invasive blood pressure
Correct Answer: C. Pulse oximetry — Provides continuous monitoring of oxygen saturation in
arterial blood.
6. Which gas is commonly used for rapid induction and recovery in anesthesia?
A. Nitrous oxide
B. Oxygen
C. Helium
D. Carbon dioxide
Correct Answer: A. Nitrous oxide — It is low in blood solubility, allowing fast onset and recovery.
7. Which of the following is a contraindication for spinal anesthesia?
A. Obesity
B. Local infection at injection site
C. Patient anxiety
D. Age over 70
Correct Answer: B. Local infection at injection site — Risk of introducing pathogens into the CNS.
8. Which muscle relaxant is most suitable for rapid sequence induction?
A. Vecuronium
, B. Succinylcholine
C. Rocuronium (standard dose)
D. Atracurium
Correct Answer: B. Succinylcholine — Has ultra-rapid onset, ideal for securing airway quickly.
9. During anesthesia, a sudden rise in end-tidal CO₂ may indicate:
A. Hypoventilation
B. Malignant hyperthermia
C. Airway obstruction
D. Hypothermia
Correct Answer: B. Malignant hyperthermia — Characterized by hypermetabolism and rapid CO₂
rise.
10. The ASA physical status classification system is used to:
A. Predict intraoperative complications
B. Determine anesthetic drug dose
C. Measure oxygen saturation
D. Monitor heart rate
Correct Answer: A. Predict intraoperative complications — ASA classification helps assess
perioperative risk.
11. Which anesthetic agent can trigger malignant hyperthermia?
A. Isoflurane
B. Propofol
C. Midazolam
D. Fentanyl
Correct Answer: A. Isoflurane — Volatile anesthetics and succinylcholine are known triggers.
12. The minimum fasting period before elective surgery for clear liquids is:
A. 2 hours
B. 4 hours
