What causes stimulation of the peripheral chemoreceptors to increase the ventilatory rate?
a. Pain or anxiety
b. PaCO2 of about 40 mm Hg
c. PaO2 of about 60 mm Hg
d. Venous pH of 7.30 to 7.40
C
A lower than normal PaO2 of about 60 mm Hg or less will stimulate the peripheral chemoreceptors. These chemoreceptors will not be stimulated by pain or anxiety, normal PaCO2, or normal venous pH.
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