#1
What is the normal range of oxygen saturation in arterial blood?
96-100%
ExplanationOptimal oxygen levels for healthy tissue perfusion and function.
#2
Which of the following devices is commonly used for oxygen therapy?
Oxygen concentrator
ExplanationA device that provides a high concentration of oxygen for therapeutic use.
#3
What is the primary function of the respiratory system?
Gas exchange
ExplanationExchange of oxygen and carbon dioxide in the lungs for metabolic needs.
#4
Which respiratory condition is characterized by inflammation and narrowing of the airways?
Asthma
ExplanationChronic inflammation leading to bronchial constriction.
#5
What is the purpose of the respiratory control center in the brainstem?
Regulating breathing
ExplanationBrain region controlling the rate and depth of breathing.
#6
What does the term 'FiO2' stand for in respiratory care?
Fraction of Inspired Oxygen
ExplanationThe proportion of oxygen in the inhaled air, crucial in managing oxygen therapy.
#7
In mechanical ventilation, what does PEEP stand for?
Positive End-Expiratory Pressure
ExplanationPressure maintained in the lungs to prevent alveolar collapse.
#8
What is the purpose of the diaphragm in breathing?
Increasing lung capacity
ExplanationPrincipal muscle for expanding lung volume during inhalation.
#9
Which of the following is a common side effect of long-term oxygen therapy?
Oxygen toxicity
ExplanationPotential harm from prolonged exposure to high levels of supplemental oxygen.
#10
What is the primary function of surfactant in the lungs?
Increasing lung compliance
ExplanationReduces surface tension, facilitating lung expansion.
#11
Which condition is characterized by inadequate oxygen reaching the tissues and organs in the body?
Hypoxemia
ExplanationInsufficient oxygen levels in the bloodstream.
#12
What is the primary goal of non-invasive positive pressure ventilation (NIPPV)?
Prevent intubation
ExplanationSupporting breathing without the need for invasive intubation.
#13
What is the primary purpose of a high-flow nasal cannula in respiratory care?
Providing humidified oxygen at high flow rates
ExplanationDelivers warm, moist oxygen at elevated rates for respiratory support.
#14
What is the primary mechanism by which oxygen is transported in the blood?
Bound to hemoglobin
ExplanationOxygen molecules carried by hemoglobin for systemic distribution.
#15
In the context of oxygen delivery, what does the term 'nasal cannula' refer to?
A device for delivering oxygen through the nose
ExplanationA common device for administering oxygen through the nostrils.