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47430 Surgery

A 72-year-old male with diabetes mellitus is evaluated in the emergency room because of lethargy, disorientation, and long, deep breaths (Kussmaul respirations). Initial chemistries on venous blood demonstrate high glucose at 380 mg/dL (normal up to 120) and a pH of 7.3. Recalling the normal bicarbonate (22 to 28 mM) and PCO2 (33 to 45 mmHg) values, which of the additional test results below would be consistent with the man’s pH and breathing pattern?

AA bicarbonate of 5 mM and PCO2 of 10 mmHg
BA bicarbonate of 15 mM and PCO2 of 30 mmHg
CA bicarbonate of 15 mM and PCO2 of 40 mmHg
DA bicarbonate of 20 mM and PCO2 of 45 mmHg
Surgery
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