What is the normal O2 saturation for a healthy adult?
90-95%
95-100%
86-89%
80-85%
The Correct Answer is B
A. 90-95%: acceptable in some chronic conditions, but not the ideal normal.
B. 95-100%: this is the normal range for oxygen saturation in healthy adults.
C. 86-89%: indicates hypoxemia.
D. 80-85%: severely hypoxic, needs medical attention.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","D"]
Explanation
A. Pharynx: The pharynx (throat) is part of the upper respiratory tract and functions as a passageway for both air and food.
B. Nasal cavity: The nasal cavity is the main entryway for inhaled air and is part of the upper respiratory system.
C. Bronchial tree: The bronchial tree is part of the lower respiratory system, beginning with the bronchi and branching into bronchioles.
D. Larynx: The larynx (voice box) is part of the upper respiratory system; it connects the pharynx to the trachea.
E. Trachea: The trachea (windpipe) is part of the lower respiratory system.
Correct Answer is C
Explanation
A. The patient has hypotension: Hypotension does not directly cause use of accessory muscles.
B. The patient is breathing normally, using the normal muscles of inspiration and expiration: Normal breathing uses the diaphragm and intercostals, not accessory muscles like the sternocleidomastoid.
C. The patient is having difficulty breathing: Use of accessory muscles at rest indicates respiratory distress or difficulty in breathing.
D. The patient has hypertension: Hypertension is not directly related to accessory muscle use during breathing.
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