EMT Chapter 9 and 10| Pre-Assessment
Licensure Exam| Questions and
Answers| Solved 2025
When would it be most appropriate to use a manually triggered oxygen-powered ventilator?
For a patient in respiratory arrest with no gag reflex.
What is the primary physiological effect of positive pressure ventilation on the cardiovascular
system?
It reduces venous return to the heart.
What should you do first if an oxygen regulator becomes loose while delivering oxygen to a
patient?
Turn off the cylinder valve immediately.
What is the most effective way to ensure adequate ventilation when using a bag-mask device on
a single rescuer?
Utilize an adjunct such as an oropharyngeal airway.
How does using a nasal cannula differ from a non-rebreather mask in terms of oxygen delivery?
The nasal cannula provides a lower concentration of oxygen than a non-rebreather mask.
1
,What is the purpose of using a flow-restricted oxygen-powered ventilation device in certain
situations?
To deliver consistent positive pressure ventilation.
Which of the following steps should you take if a patient's oxygen saturation does not improve
despite proper ventilation techniques?
Check for airway obstructions and ensure proper mask seal.
What is the correct action if a stoma patient experiences difficulty during bag-mask ventilation?
Clear the stoma and ensure a tight seal around the stoma opening.
Why is it critical to avoid overventilating a patient with a bag-mask device?
Overventilation can lead to gastric inflation and reduced cardiac output.
What type of oxygen device would you use for a patient who is spontaneously breathing but has
a low oxygen saturation level?
A non-rebreather mask or nasal cannula depending on the severity.
What is the recommended oxygen flow rate when using a simple face mask?
6-10 liters per minute.
What should you do if you notice a leak in the oxygen supply tubing while ventilating a patient?
2
, Replace the faulty tubing immediately.
What is the primary reason for sealing the mouth and nose while ventilating a patient with a
stoma?
To prevent air from escaping and ensure proper lung inflation.
Which oxygen delivery system is most effective for patients with COPD requiring supplemental
oxygen?
Venturi mask to control oxygen concentration levels.
What is the best technique for ensuring effective ventilation during CPR with two rescuers?
One rescuer maintains the airway and seal while the other delivers ventilations.
What is the correct response if a patient with severe facial trauma cannot be ventilated with a
bag-mask device?
Consider using a supraglottic airway device or intubation if within scope.
What is the purpose of humidified oxygen in prehospital care?
To prevent drying of the mucous membranes during long transports.
What is the primary safety concern when using a flow-restricted, oxygen-powered ventilation
device?
3
Licensure Exam| Questions and
Answers| Solved 2025
When would it be most appropriate to use a manually triggered oxygen-powered ventilator?
For a patient in respiratory arrest with no gag reflex.
What is the primary physiological effect of positive pressure ventilation on the cardiovascular
system?
It reduces venous return to the heart.
What should you do first if an oxygen regulator becomes loose while delivering oxygen to a
patient?
Turn off the cylinder valve immediately.
What is the most effective way to ensure adequate ventilation when using a bag-mask device on
a single rescuer?
Utilize an adjunct such as an oropharyngeal airway.
How does using a nasal cannula differ from a non-rebreather mask in terms of oxygen delivery?
The nasal cannula provides a lower concentration of oxygen than a non-rebreather mask.
1
,What is the purpose of using a flow-restricted oxygen-powered ventilation device in certain
situations?
To deliver consistent positive pressure ventilation.
Which of the following steps should you take if a patient's oxygen saturation does not improve
despite proper ventilation techniques?
Check for airway obstructions and ensure proper mask seal.
What is the correct action if a stoma patient experiences difficulty during bag-mask ventilation?
Clear the stoma and ensure a tight seal around the stoma opening.
Why is it critical to avoid overventilating a patient with a bag-mask device?
Overventilation can lead to gastric inflation and reduced cardiac output.
What type of oxygen device would you use for a patient who is spontaneously breathing but has
a low oxygen saturation level?
A non-rebreather mask or nasal cannula depending on the severity.
What is the recommended oxygen flow rate when using a simple face mask?
6-10 liters per minute.
What should you do if you notice a leak in the oxygen supply tubing while ventilating a patient?
2
, Replace the faulty tubing immediately.
What is the primary reason for sealing the mouth and nose while ventilating a patient with a
stoma?
To prevent air from escaping and ensure proper lung inflation.
Which oxygen delivery system is most effective for patients with COPD requiring supplemental
oxygen?
Venturi mask to control oxygen concentration levels.
What is the best technique for ensuring effective ventilation during CPR with two rescuers?
One rescuer maintains the airway and seal while the other delivers ventilations.
What is the correct response if a patient with severe facial trauma cannot be ventilated with a
bag-mask device?
Consider using a supraglottic airway device or intubation if within scope.
What is the purpose of humidified oxygen in prehospital care?
To prevent drying of the mucous membranes during long transports.
What is the primary safety concern when using a flow-restricted, oxygen-powered ventilation
device?
3
