Question

Respiratory *** (low arterial PO2; raised arterial PCO2) leads to

A. Raised pulmonary artery pressure (pulmonary hypertension).

B. Right ventricular ***.

C. Low voltage P waves in the electrocardiogram.

D. Decreased cerebral blood flow.

E. Warm hands and feet.

Answer 1

A. True Hypoxia causes generalized pulmonary vasoconstriction.

B. True Pulmonary hypertension can lead to right ventricular *** (‘cor pulmonale’).

C. False Atrial hypertrophy in cor pulmonale results in prominent P waves.

D. False CO2 dilates cerebral blood vessels.

E. True CO2 is a vasodilator and ‘cor pulmonale’ is a ‘high output’ ***.