#1
Which medical condition may require oxygen therapy?
Hypoxemia
ExplanationLow oxygen levels in the blood.
#2
What is the purpose of a non-rebreather mask in oxygen administration?
To deliver a continuous flow of oxygen
ExplanationPrevents mixing of exhaled air with oxygen.
#3
In oxygen therapy, what does FiO2 represent?
Fraction of inspired oxygen
ExplanationPercentage of oxygen in the inhaled air.
#4
What is the primary consideration when selecting the appropriate oxygen delivery device for a patient?
Oxygen concentration requirements
ExplanationMatches patient needs for effective therapy.
#5
What is the primary benefit of using a nasal cannula for oxygen therapy?
Ease of use
ExplanationComfortable and convenient for patients.
#6
What is the recommended flow rate for oxygen therapy in adults with hypoxemia?
5-10 liters per minute
ExplanationAdequate oxygen delivery without causing oxygen toxicity.
#7
Which of the following devices is commonly used to administer medical oxygen?
Oxygen mask
ExplanationEnsures effective oxygen delivery.
#8
What is the danger associated with using too high a flow rate of oxygen in patients with chronic obstructive pulmonary disease (COPD)?
Increased risk of hypercapnia
ExplanationExcess oxygen can suppress the respiratory drive.
#9
What is the primary function of a pulse oximeter in oxygen therapy?
To measure oxygen saturation in the blood
ExplanationEnsures adequate oxygenation without excess.
#10
Which of the following is a potential complication of oxygen therapy?
Hypercapnia
ExplanationBuildup of carbon dioxide due to reduced ventilation.
#11
What is the purpose of a Venturi mask in oxygen administration?
To deliver a precise and constant FiO2
ExplanationMaintains accurate oxygen levels.
#12
Which of the following is a potential side effect of prolonged high-flow oxygen therapy?
Oxygen toxicity
ExplanationExcessive oxygen intake can damage tissues.
#13
What is the purpose of a reservoir bag in an oxygen mask?
To prevent rebreathing of exhaled air
ExplanationEnsures fresh oxygen with each breath.
#14
In which position should a patient be placed during oxygen administration for optimal ventilation?
Fowler's position
ExplanationSemi-upright position to ease breathing.
#15
What is the purpose of a humidifier in oxygen therapy?
To add moisture to the inspired air
ExplanationPrevents dryness and irritation.
#16
What is the target oxygen saturation level for most patients receiving oxygen therapy?
90-95%
ExplanationOptimal balance to avoid hypoxemia and oxygen toxicity.
#17
In which medical emergency is high-flow oxygen therapy often used?
Anaphylaxis
ExplanationTo counteract severe respiratory distress.
#18
Which medical condition is contraindicated for hyperbaric oxygen therapy?
Acute respiratory failure
ExplanationPressure changes can worsen lung condition.
#19
What is the primary aim of long-term oxygen therapy (LTOT) in patients with chronic respiratory conditions?
To relieve hypoxemia and enhance quality of life
ExplanationImproves oxygen levels for better functioning and comfort.
#20
Which of the following medical conditions may benefit from high-flow nasal cannula (HFNC) therapy?
Pneumonia
ExplanationSupports oxygenation in acute respiratory conditions.
#21
What is the purpose of a nebulizer in respiratory care?
To administer medications in aerosolized form
ExplanationAllows direct delivery to the lungs.
#22
In which scenario is oxygen therapy generally not recommended?
Severe anemia
ExplanationMay worsen oxygen-carrying capacity.
#23
What is the purpose of a demand valve in emergency oxygen administration?
To provide oxygen only during inhalation
ExplanationConserves oxygen and minimizes waste.
#24
Which of the following is a potential complication of high-flow nasal cannula (HFNC) therapy?
Barotrauma
ExplanationPressure-related lung injury.
#25
What is the recommended method for confirming proper placement of an endotracheal tube during mechanical ventilation with oxygen?
Chest X-ray
ExplanationEnsures tube is correctly positioned in the airway.