A 54-year-old woman with advanced emphysema due to long-term cigarette smoking is admitted to hospit… Show more A 54-year-old woman with advanced emphysema due to long-term cigarette smoking is admitted to hospital due to shortness of breath. She is diagnosed with pulmonary hypertension. Her arterial blood gases are: pO2 = 55 mmHg pCO2 = 75 mmHg pH = 7.3 What is the cause of the pulmonary hypertension in this person? A. Increased alveolar pCO2 B. Increased sympathetic tone C. Decreased parasympathetic tone D. Decreased alveolar pO2 • Show less