Respirations that are characterized by alternating periods of deep and shallow breathing are a result of which respiratory mechanism?
A) Decreased blood flow to the medulla oblongata
B) Increased partial pressure of arterial carbon dioxide (PaCO2), decreased pH, and decreased partial pressure of arterial oxygen (PaO2)
C) Stimulation of stretch or J-receptors
D) Fatigue of the intercostal muscles and diaphragm

Question

Quizplus · Accepted Answer

Alternating periods of deep and shallow breathing are characteristic of Cheyne-Stokes respirations and are the result of any condition that slows the blood flow to the brainstem,which in turn slows impulses that send information to the respiratory centers of the brainstem.None of the remaining options are responsible for the described breathing pattern.

Respirations That Are Characterized by Alternating Periods of Deep and Shallow