The patient is breathing normally. Which process does the nurse consider is working properly when the patient inspires?
A) Stimulation of chemical receptors in the aorta
B) Reduction of arterial oxygen saturation levels
C) Requirement of elastic recoil lung properties
D) Enhancement of accessory muscle usage

Question

Quizplus · Accepted Answer

Inspiration is an active process, stimulated by chemical receptors in the aorta. Reduced arterial oxygen saturation levels indicate hypoxemia, an abnormal finding. Expiration is a passive process that depends on the elastic recoil properties of the lungs, requiring little or no muscle work. Prolonged use of the accessory muscles does not promote effective ventilation and causes fatigue.

The Patient Is Breathing Normally