... perfusion, detecting and PART THREEApplicationsfor Fluid and Electrolyte ConceptsCopyright © 20 08 by The McGraw-Hill Companies, Inc. Click here for terms of use. 160 Fluids and Electrolytes Demystifi ... beats/minute, and respiration (R) of 38 breaths/minute, and her skin is cool and pale with pale mucous membranes. Arterial blood-gas analysis reveals a pH of 7. 32, PCO 2 of 33 mm Hg, O 2 of 70 ... further blocking oxygenation. The ultimate 170 Fluids and Electrolytes Demystifi ed Fluids, electrolytes, and bicarbonate are secreted, reabsorbed, and excreted in different areas of the nephron....