ANESTHESIA TECHNICIAN EXAM QUESTIONS
AND CORRECT ANSWERS (VERIFIED ANSWERS)
PLUS RATIONALES 2027 Q&A | INSTANT
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1.
Which piece of equipment is primarily used to deliver a controlled
concentration of volatile anesthetic agents to a patient?
A. Oxygen flowmeter
B. Vaporizer
C. Suction regulator
D. Pulse oximeter
Answer: B. Vaporizer
Rationale: A vaporizer converts a liquid volatile anesthetic into a
controlled concentration of anesthetic vapor and adds it to the fresh-
gas flow. The oxygen flowmeter controls gas flow, the suction
regulator controls negative pressure, and the pulse oximeter monitors
oxygen saturation.
,2.
Which gas is most commonly used as the primary carrier gas during
general anesthesia?
A. Helium
B. Nitrous oxide
C. Oxygen
D. Carbon dioxide
Answer: C. Oxygen
Rationale: Oxygen is essential for maintaining adequate tissue
oxygenation and is routinely used during general anesthesia. Nitrous
oxide may be used as an adjunct, while helium and carbon dioxide are
not routine primary carrier gases.
3.
What is the primary purpose of the anesthesia breathing circuit?
A. Measure blood pressure
B. Deliver gases to and remove gases from the patient
C. Monitor body temperature
D. Administer intravenous medications
Answer: B. Deliver gases to and remove gases from the patient
,Rationale: The breathing circuit provides a pathway for delivery of
oxygen and anesthetic gases to the patient and removal of exhaled
carbon dioxide and gases. The other options describe functions of
unrelated equipment.
4.
Which device is used to remove carbon dioxide from a circle breathing
system?
A. Heat exchanger
B. Soda lime canister
C. Oxygen analyzer
D. Reservoir bag
Answer: B. Soda lime canister
Rationale: Soda lime chemically absorbs carbon dioxide from exhaled
gases, allowing gases to be rebreathed in a circle system. The
reservoir bag stores gas, while the oxygen analyzer measures oxygen
concentration.
5.
Which monitoring device measures peripheral oxygen saturation?
A. Capnograph
B. Pulse oximeter
, C. Spirometer
D. ECG monitor
Answer: B. Pulse oximeter
Rationale: A pulse oximeter uses light absorption to estimate arterial
oxygen saturation and displays SpO₂. Capnography measures exhaled
carbon dioxide, while ECG monitoring evaluates electrical cardiac
activity.
6.
What does capnography primarily measure?
A. Oxygen saturation
B. Blood pressure
C. Exhaled carbon dioxide
D. Hemoglobin concentration
Answer: C. Exhaled carbon dioxide
Rationale: Capnography continuously measures and displays the
concentration or partial pressure of carbon dioxide in exhaled gas. It is
especially useful for assessing ventilation and confirming airway
placement.
7.
AND CORRECT ANSWERS (VERIFIED ANSWERS)
PLUS RATIONALES 2027 Q&A | INSTANT
DOWNLOAD PDF
1.
Which piece of equipment is primarily used to deliver a controlled
concentration of volatile anesthetic agents to a patient?
A. Oxygen flowmeter
B. Vaporizer
C. Suction regulator
D. Pulse oximeter
Answer: B. Vaporizer
Rationale: A vaporizer converts a liquid volatile anesthetic into a
controlled concentration of anesthetic vapor and adds it to the fresh-
gas flow. The oxygen flowmeter controls gas flow, the suction
regulator controls negative pressure, and the pulse oximeter monitors
oxygen saturation.
,2.
Which gas is most commonly used as the primary carrier gas during
general anesthesia?
A. Helium
B. Nitrous oxide
C. Oxygen
D. Carbon dioxide
Answer: C. Oxygen
Rationale: Oxygen is essential for maintaining adequate tissue
oxygenation and is routinely used during general anesthesia. Nitrous
oxide may be used as an adjunct, while helium and carbon dioxide are
not routine primary carrier gases.
3.
What is the primary purpose of the anesthesia breathing circuit?
A. Measure blood pressure
B. Deliver gases to and remove gases from the patient
C. Monitor body temperature
D. Administer intravenous medications
Answer: B. Deliver gases to and remove gases from the patient
,Rationale: The breathing circuit provides a pathway for delivery of
oxygen and anesthetic gases to the patient and removal of exhaled
carbon dioxide and gases. The other options describe functions of
unrelated equipment.
4.
Which device is used to remove carbon dioxide from a circle breathing
system?
A. Heat exchanger
B. Soda lime canister
C. Oxygen analyzer
D. Reservoir bag
Answer: B. Soda lime canister
Rationale: Soda lime chemically absorbs carbon dioxide from exhaled
gases, allowing gases to be rebreathed in a circle system. The
reservoir bag stores gas, while the oxygen analyzer measures oxygen
concentration.
5.
Which monitoring device measures peripheral oxygen saturation?
A. Capnograph
B. Pulse oximeter
, C. Spirometer
D. ECG monitor
Answer: B. Pulse oximeter
Rationale: A pulse oximeter uses light absorption to estimate arterial
oxygen saturation and displays SpO₂. Capnography measures exhaled
carbon dioxide, while ECG monitoring evaluates electrical cardiac
activity.
6.
What does capnography primarily measure?
A. Oxygen saturation
B. Blood pressure
C. Exhaled carbon dioxide
D. Hemoglobin concentration
Answer: C. Exhaled carbon dioxide
Rationale: Capnography continuously measures and displays the
concentration or partial pressure of carbon dioxide in exhaled gas. It is
especially useful for assessing ventilation and confirming airway
placement.
7.
