C. kidney retention of HCO 3 - . D. kidney expulsion of HCO 3 - . E. switching to anaerobic metabolism. A patient with a collapsed lung who cannot expel CO 2 at a normal rate will suffer from respiratory acidosis. Because the main problem in respiratory acidosis affects the lung, the only other organ that can really compensate is the kidney.
Red arrows indicate the primary defect.
Green arrows indicate compensation mechanisms. All rights reserved.