Graph given below demonstrates ventilation-perfusion ratio curve for the normal lung. If V/P ratio is decreased , what shall be the effect on pCO2 and pO2 ?: (A) | O2 tension, | CO2 tension, (B) O2 tension-No change , | CO2 tension, (C) |O2 tension, |CO2 tension, (D) | O2 tension, | CO2 tension
Answer is D. Decreased ventilation-perfusion ratio-Decreased oxygenation due to decreased ventilation with respect to perfusion-PaO2 decreases and Pco2 increases.