, Anesthesia Technician Certification
Exam 2 2026/2027 | Anesthesia
Equipment, Patient Safety &
Certification Review Exam Questions
and Answers with Rationale
Question 1
Which component of the anesthesia machine regulates the
amount of volatile anesthetic delivered to the patient?
A. Flowmeter
B. Vaporizer
C. CO₂ absorber
D. Oxygen analyzer
Correct Answer: B. Vaporizer
Rationale:
The vaporizer converts liquid anesthetic agents into
precise concentrations of anesthetic vapor. The flowmeter
controls fresh gas flow, but the vaporizer determines the
anesthetic concentration delivered.
,Question 2
The oxygen pipeline supply in the operating room is
usually identified by:
A. Yellow color coding
B. Green color coding
C. Blue color coding
D. Black color coding
Correct Answer: B. Green color coding
Rationale:
In many U.S. healthcare settings, oxygen is identified by
green labeling. Gas identification systems help prevent
dangerous misconnections.
Question 3
A pressure regulator on a gas cylinder is used to:
A. Increase cylinder pressure
B. Reduce high cylinder pressure to a usable pressure
C. Measure oxygen saturation
D. Remove carbon dioxide
Correct Answer: B. Reduce high cylinder pressure to
a usable pressure
, Rationale:
Medical gas cylinders contain very high pressure.
Regulators reduce this pressure so gases can safely enter
the anesthesia machine.
Question 4
The anesthesia machine's fail-safe system is designed
primarily to:
A. Prevent oxygen failure
B. Prevent vaporizer leaks
C. Increase anesthetic depth
D. Monitor ECG rhythm
Correct Answer: A. Prevent oxygen failure
Rationale:
Fail-safe mechanisms reduce or stop other gas flow when
oxygen pressure becomes inadequate, helping prevent
hypoxic gas mixtures.
Question 5
The purpose of the oxygen flush valve is to:
Exam 2 2026/2027 | Anesthesia
Equipment, Patient Safety &
Certification Review Exam Questions
and Answers with Rationale
Question 1
Which component of the anesthesia machine regulates the
amount of volatile anesthetic delivered to the patient?
A. Flowmeter
B. Vaporizer
C. CO₂ absorber
D. Oxygen analyzer
Correct Answer: B. Vaporizer
Rationale:
The vaporizer converts liquid anesthetic agents into
precise concentrations of anesthetic vapor. The flowmeter
controls fresh gas flow, but the vaporizer determines the
anesthetic concentration delivered.
,Question 2
The oxygen pipeline supply in the operating room is
usually identified by:
A. Yellow color coding
B. Green color coding
C. Blue color coding
D. Black color coding
Correct Answer: B. Green color coding
Rationale:
In many U.S. healthcare settings, oxygen is identified by
green labeling. Gas identification systems help prevent
dangerous misconnections.
Question 3
A pressure regulator on a gas cylinder is used to:
A. Increase cylinder pressure
B. Reduce high cylinder pressure to a usable pressure
C. Measure oxygen saturation
D. Remove carbon dioxide
Correct Answer: B. Reduce high cylinder pressure to
a usable pressure
, Rationale:
Medical gas cylinders contain very high pressure.
Regulators reduce this pressure so gases can safely enter
the anesthesia machine.
Question 4
The anesthesia machine's fail-safe system is designed
primarily to:
A. Prevent oxygen failure
B. Prevent vaporizer leaks
C. Increase anesthetic depth
D. Monitor ECG rhythm
Correct Answer: A. Prevent oxygen failure
Rationale:
Fail-safe mechanisms reduce or stop other gas flow when
oxygen pressure becomes inadequate, helping prevent
hypoxic gas mixtures.
Question 5
The purpose of the oxygen flush valve is to:
