Gas exchange — Flashcards

What equation may be used to determine the physiologic dead space (VD)?_____

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

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

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

Carboxyhemoglobin causes _____ O2-binding capacity

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

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

The partial pressure of a gas (Px) in dry expired air is equal to _____

Interstitial restrictive lung diseases are characterized by _____ A-a gradients

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