NURS 1020 Exam 2 (oxygenation, nutrition,
perioperative nursing) Exam 2026 -2027 COMPLETE
REAL EXAM QUESTIONS WITH ACCURATE ANSWERS
(VERIFIED ANSWERS) LATEST UPDATE \GRADED
A+\Community College of Rhode Island
oxygenation concept review
-process of providing oxygen to all cells
-O2 is obtained from atmospheric air
-transport through respiratory tract to alveoli
-diffuse O2 into blood to be carried to cells
-ventilation (inspiration/expiration)
-respiration- exchange of O2 and CO2 at the cellular level
-breathing is an autonomic process
-normal oxygenation depends on healthy development and function of the
respiratory system, and perfusion
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obstructive sleep apnea
a disorder in which a person, while asleep, stops breathing because his
or her throat closes; the condition results in frequent awakenings
during the night
caused by:
-narrowing of air passages with relaxation of muscle tone
-tongue falling backwards to partially or completely obstruct the airway
-more common in men than in women, until menopause, then incidence is
just as likely
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apnea
cessation of normal breathing lasting at least 10-90 seconds
-apnea and arousal episodes happen multiple times
hypopenia
shallow breathing
(30-50% reduced airflow)
how sleep apnea occurs
A, The patient predisposed to obstructive sleep apnea (OSA) has a small
pharyngeal airway.
B, During sleep, the pharyngeal muscles relax, allowing the airway to
close. Lack of airflow results in repeated apneic episodes.
C, With CPAP, continuous positive airway pressure splints the airway open,
preventing airflow obstruction.
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manifestations of sleep apnea
-frequent arousals during sleep
-insomnia
-excessive daytime sleepiness
-witnessed apneic episodes
-snoring
-morning headache- increased BP
-irritability
-personality changes
complications related to sleep apnea
-hypertension
-cardiac changes
-poor concentration/memory
-impotence
-depression
-diagnosis based on medical and sleep history, PSG
-OSA is defined as more than 5 hypoapneic events per hour acompanied
by 3- 4% decrease in O2 sat
-severa apneia can be from 30-50 events
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