Gas exchange — Flashcards

The alveolar gas equation states that the alveolar Po2 (PAo2) equals:_____

Patients with cyanide poisoning have a _____ of the venous-arterial PO2 gradient

The partial pressure of a gas (Px) in humidified tracheal air is equal to _____

Why must fetal hemoglobin have a much higher O2 binding affinity than HbA? _____

Carboxyhemoglobin causes _____ O2-binding capacity

Blood in the umbilical vein has a O2 saturation of approximately _____%

How does normal aging change the A-a gradient?_____

What cause of hypoxemia is not greatly helped by supplemental O2?_____

Increased Pco2 (hypercapnia) causes vaso-_____ in the pulmonary circulation

Which zone of the lung has the highest Pao2? _____