Which of the following is the best determinant of adequacy of alveolar ventilation?: (A) Aerial pO2 level, (B) Aerial pCO2 level, (C) Minute ventilation, (D) Presence of cyanosis
Answer is B. Atrial pco2 content determines the alveolar ventilation Ref: guyton and hall textbook of medical physiology 12 edition page number:331,332,333