TLS Online TPP Program

#Question id: 11756


A 65-year-old man has a heart attack and experiences cardiopulmonary arrest while being transported to the emergency room. The following laboratory values are obtained from arterial blood:

plasma pH = 7.12,

plasma PCO2 = 60mm Hg, and

plasma HCO3− concentration = 19 mEq/L.

Which of the following best describes his acid-base disorder?

#SCPH28 | Zoology
  1. Respiratory acidosis with partial renal compensation
  2. Metabolic acidosis with partial respiratory compensation
  3. Mixed acidosis: combined metabolic and respiratory acidosis
  4. Mixed alkalosis: combined respiratory and metabolic alkalosis