#1
What is the most common method of oxygen delivery in emergency medical care?
Nasal cannula
Venturi mask
Bag-valve-mask
Tracheostomy tube
#2
Which of the following is a characteristic of a Venturi mask?
It provides the highest FiO2 among low-flow oxygen devices
It is primarily used for long-term oxygen therapy
It delivers oxygen at a fixed concentration
It requires a tight seal to be effective
#3
What is the main purpose of using a pulse oximeter during oxygen therapy?
To measure oxygen flow rate
To assess respiratory rate
To monitor oxygen saturation levels
To measure end-tidal CO2
#4
Which of the following is a complication associated with high-flow oxygen therapy?
Hypoventilation
Hypercapnia
Hypoxemia
Hypothermia
#5
In airway management, what is the purpose of the chin lift maneuver?
To open the mouth
To lift the tongue off the posterior pharyngeal wall
To maintain alignment of the airway
To suction secretions from the mouth
#6
Which of the following is a potential complication of oxygen therapy in patients with chronic obstructive pulmonary disease (COPD)?
Hyperoxemia
Respiratory alkalosis
Respiratory acidosis
Pulmonary edema
#7
What is the primary function of a non-rebreather mask in delivering oxygen?
To deliver a precise oxygen concentration
To humidify the oxygen
To prevent rebreathing of exhaled air
To provide positive pressure ventilation
#8
Which of the following oxygen delivery devices is most suitable for providing oxygen therapy to a patient with facial burns?
Nasal cannula
Simple face mask
Non-rebreather mask
Tracheostomy mask
#9
What is the primary advantage of using a bag-valve-mask (BVM) device for ventilation?
It provides a more accurate FiO2
It allows for continuous positive airway pressure (CPAP)
It can deliver higher tidal volumes and oxygen concentrations
It is more lightweight and portable
#10
Which of the following is a potential complication of endotracheal intubation?
Pneumothorax
Hemoptysis
Bronchospasm
Esophageal perforation
#11
What is the recommended initial flow rate for oxygen administration via nasal cannula in adult patients?
1-2 L/min
3-5 L/min
6-8 L/min
10-15 L/min
#12
Which of the following is a contraindication for the use of a nasopharyngeal airway?
Conscious patient with intact gag reflex
Severe facial trauma
Foreign body airway obstruction
Upper airway burn injury
#13
What is the recommended action if oxygen saturation does not improve with oxygen therapy?
Increase the oxygen flow rate
Switch to a different oxygen delivery device
Perform endotracheal intubation
Administer bronchodilators
#14
Which of the following statements regarding high-flow nasal cannula (HFNC) therapy is true?
It is contraindicated in patients with hypoxemic respiratory failure
It delivers a fixed FiO2 regardless of the patient's breathing pattern
It provides positive end-expiratory pressure (PEEP) to the airway
It is primarily used for short-term oxygen therapy
#15
What is the recommended action if a patient receiving oxygen therapy develops signs of oxygen toxicity?
Decrease the oxygen flow rate
Switch to a lower FiO2 delivery device
Administer bronchodilators
Increase the respiratory rate