What is the role of kidneys when a patient experiences acute respiratory alkalosis?
a. Cl– shift enhances the body's compensa-tory mechanisms.
b. HCO3– is eliminated in the urine.
c. It dumps Cl– so as to retain HCO3–.
d. The Hamburger phenomenon occurs.
ANS: B
In respiratory acidosis, the kidneys retain or produce HCO3– to buffer the additional acid caused by CO2 retention. In respiratory alkalosis, the opposite occurs. A reciprocal relationship exists between Cl– and HCO3– concentrations. Bicarbonate retention is associated with chloride excre-tion.
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