Sleep apnea diagnosis, CPAP and BiPAP setup, and home oxygen therapy concepts tested on respiratory therapist certification exams.
29 cards · basic cards · AI-written, checked twice. Edit anything.
- What is obstructive sleep apnea (OSA)?
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Repeated collapse or narrowing of the upper airway during sleep that blocks airflow despite continued breathing effort- What is central sleep apnea?
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Repeated pauses in breathing caused by the brain failing to send signals to breathe, with no airway obstruction- How long must airflow stop to count as an apnea event on a sleep study?
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At least 10 seconds- What is a hypopnea?
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A partial reduction in airflow during sleep, usually with a drop in oxygen saturation or an arousal- What does the AHI (apnea-hypopnea index) measure?
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The number of apnea and hypopnea events per hour of sleep- What AHI range defines mild sleep apnea?
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5 to 15 events per hour- What AHI range defines moderate sleep apnea?
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15 to 30 events per hour- What AHI level defines severe sleep apnea?
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Greater than 30 events per hour- What is polysomnography (PSG)?
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An overnight, attended sleep study that records brain waves, eye movement, muscle activity, heart rhythm, airflow, and oxygen saturation- What does the Epworth Sleepiness Scale measure?
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A patient's self-reported likelihood of falling asleep during routine daytime activities- How does CPAP treat obstructive sleep apnea?
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It delivers continuous positive airway pressure that acts as a pneumatic splint, holding the upper airway open- What is the primary indication for CPAP therapy?
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Obstructive sleep apnea- What distinguishes BiPAP from CPAP?
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BiPAP delivers two separate pressure levels, a higher pressure during inhalation and a lower pressure during exhalation- What does IPAP stand for on a BiPAP device?
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Inspiratory positive airway pressure- What does EPAP stand for on a BiPAP device?
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Expiratory positive airway pressure
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