Daance Module 4 Questions with Correct Answers (Grade A+)
Question 1: What is the primary function of an anesthesia machine?
Answer: To receive oxygen and nitrous oxide from supply lines and deliver these gases to the patient.
Question 2: What do flow meters on an anesthesia machine measure?
Answer: The ratio of the oxygen and nitrous oxide mixture as well as the rate of delivery in liters per
minute.
Question 3: What device measures the exact amount of oxygen in the anesthetic mixture?
Answer: An oxygen analyzer and monitor.
Question 4: What happens if the oxygen level in the mixture falls below 20%?
Answer: An alarm will sound to warn of an unsafe mixture of gases.
Question 5: What is the role of a vaporizer in anesthesia?
Answer: To convert liquid anesthetic agents into gases suitable for delivery with other gases.
Question 6: Why is periodic maintenance and calibration of vaporizers essential?
Answer: To ensure the safe delivery of inhalation anesthetic agents.
Question 7: What is the purpose of a ventilator in anesthesia?
Answer: To breathe for the patient using positive and negative pressures to move anesthetic gases into and
out of the lungs.
Question 8: What alarms should be present when a ventilator is in use?
Answer: High and low pressure alarms to indicate excessive pressure or a disconnect.
Question 9: What does a regulator fail-safe mechanism do in anesthesia machines?
Answer: Stops the delivery of nitrous oxide or other gases automatically when oxygen delivery falls below
30%.
Question 10: What is the function of a scavenging system in anesthesia?
Answer: To reduce the levels of excess anesthetic gases and vapors to acceptable levels by exhausting them
outside the operating room.
Page 1
, Question 11: What color is the oxygen gas cylinder in the United States?
Answer: Green.
Question 12: What should be done with gas cylinders after the last patient?
Answer: They should be shut off and gauges and pressures reduced to zero.
Question 13: What positioning technique is used to maintain the patient's airway?
Answer: Head tilt/chin lift.
Question 14: What is the purpose of a jaw thrust maneuver?
Answer: To protrude the jaw and open the airway using bimanual pressure.
Question 15: What are nasal prongs used for in anesthesia?
Answer: To deliver oxygen without covering the nostrils.
Question 16: What is the importance of having a backup suction system?
Answer: To ensure suction is available in case of electrical power failure.
Question 17: What is the initial intervention for airway emergencies?
Answer: Bag/valve/mask ventilation.
Question 18: What is a tongue traction suture used for?
Answer: To pull the tongue forward when it is obstructing the airway.
Question 19: What should be monitored periodically to ensure effective scavenging techniques?
Answer: Levels of nitrous oxide in the operating room.
Question 20: What is the purpose of a full-face mask in anesthesia?
Answer: To administer general anesthetics via inhalation, although it cannot be used for intraoral
procedures.
Question 21: What is the recommended practice for remote gas storage?
Answer: To have tank gauges that are accessible and easy to check, with a low pressure warning system.
Page 2
Question 1: What is the primary function of an anesthesia machine?
Answer: To receive oxygen and nitrous oxide from supply lines and deliver these gases to the patient.
Question 2: What do flow meters on an anesthesia machine measure?
Answer: The ratio of the oxygen and nitrous oxide mixture as well as the rate of delivery in liters per
minute.
Question 3: What device measures the exact amount of oxygen in the anesthetic mixture?
Answer: An oxygen analyzer and monitor.
Question 4: What happens if the oxygen level in the mixture falls below 20%?
Answer: An alarm will sound to warn of an unsafe mixture of gases.
Question 5: What is the role of a vaporizer in anesthesia?
Answer: To convert liquid anesthetic agents into gases suitable for delivery with other gases.
Question 6: Why is periodic maintenance and calibration of vaporizers essential?
Answer: To ensure the safe delivery of inhalation anesthetic agents.
Question 7: What is the purpose of a ventilator in anesthesia?
Answer: To breathe for the patient using positive and negative pressures to move anesthetic gases into and
out of the lungs.
Question 8: What alarms should be present when a ventilator is in use?
Answer: High and low pressure alarms to indicate excessive pressure or a disconnect.
Question 9: What does a regulator fail-safe mechanism do in anesthesia machines?
Answer: Stops the delivery of nitrous oxide or other gases automatically when oxygen delivery falls below
30%.
Question 10: What is the function of a scavenging system in anesthesia?
Answer: To reduce the levels of excess anesthetic gases and vapors to acceptable levels by exhausting them
outside the operating room.
Page 1
, Question 11: What color is the oxygen gas cylinder in the United States?
Answer: Green.
Question 12: What should be done with gas cylinders after the last patient?
Answer: They should be shut off and gauges and pressures reduced to zero.
Question 13: What positioning technique is used to maintain the patient's airway?
Answer: Head tilt/chin lift.
Question 14: What is the purpose of a jaw thrust maneuver?
Answer: To protrude the jaw and open the airway using bimanual pressure.
Question 15: What are nasal prongs used for in anesthesia?
Answer: To deliver oxygen without covering the nostrils.
Question 16: What is the importance of having a backup suction system?
Answer: To ensure suction is available in case of electrical power failure.
Question 17: What is the initial intervention for airway emergencies?
Answer: Bag/valve/mask ventilation.
Question 18: What is a tongue traction suture used for?
Answer: To pull the tongue forward when it is obstructing the airway.
Question 19: What should be monitored periodically to ensure effective scavenging techniques?
Answer: Levels of nitrous oxide in the operating room.
Question 20: What is the purpose of a full-face mask in anesthesia?
Answer: To administer general anesthetics via inhalation, although it cannot be used for intraoral
procedures.
Question 21: What is the recommended practice for remote gas storage?
Answer: To have tank gauges that are accessible and easy to check, with a low pressure warning system.
Page 2
