#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
Which gas is primarily responsible for the sensation of breathlessness or air hunger?
Carbon dioxide
ExplanationElevated CO2 levels trigger respiratory drive and discomfort.
#7
What is the primary indicator used to assess respiratory distress in a patient?
Respiratory rate
ExplanationKey measure of breathing effectiveness and potential distress.
#8
In the context of mechanical ventilation, what does the term 'PEEP' stand for?
Positive End-Expiratory Pressure
ExplanationPressure maintained at the end of the breathing cycle to prevent lung collapse.
#9
Which of the following is a common complication of prolonged mechanical ventilation?
Atelectasis
ExplanationRisk of lung collapse due to extended use of mechanical ventilation.
#10
What is the primary purpose of the bronchial hygiene therapy in respiratory care?
Preventing airway obstruction
ExplanationTechniques to clear mucus and maintain airway patency.
#11
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.
#12
In mechanical ventilation, what does PEEP stand for?
Positive End-Expiratory Pressure
ExplanationPressure maintained in the lungs to prevent alveolar collapse.
#13
What is the purpose of the diaphragm in breathing?
Increasing lung capacity
ExplanationPrincipal muscle for expanding lung volume during inhalation.
#14
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.
#15
What is the primary function of surfactant in the lungs?
Increasing lung compliance
ExplanationReduces surface tension, facilitating lung expansion.
#16
Which respiratory condition is characterized by the collapse of small airways in the lungs?
Atelectasis
ExplanationPartial or complete lung collapse due to airway closure.
#17
What is the primary purpose of pursed-lip breathing?
Increase tidal volume
ExplanationTechnique to improve lung ventilation and promote deeper breaths.
#18
Which respiratory condition is characterized by inflammation of the lining of the bronchial tubes?
Bronchitis
ExplanationInflammatory condition affecting the bronchial tube lining.
#19
Which of the following is a characteristic feature of chronic obstructive pulmonary disease (COPD)?
Persistent cough with sputum production
ExplanationCommon symptom associated with COPD.
#20
What is the primary purpose of an incentive spirometer?
Promoting deep breathing and preventing atelectasis
ExplanationEncourages patients to take deep breaths for lung expansion and health.
#21
Which condition is characterized by inadequate oxygen reaching the tissues and organs in the body?
Hypoxemia
ExplanationInsufficient oxygen levels in the bloodstream.
#22
What is the primary goal of non-invasive positive pressure ventilation (NIPPV)?
Prevent intubation
ExplanationSupporting breathing without the need for invasive intubation.
#23
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.
#24
What is the primary mechanism by which oxygen is transported in the blood?
Bound to hemoglobin
ExplanationOxygen molecules carried by hemoglobin for systemic distribution.
#25
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.