Gas exchange — Flashcards

The Po2 in dry inspired air is normally approximately _____ mmHg

Normally 1g of hemoglobin can bind _____ mL of O2

Carboxyhemoglobin heme groups not bound by CO have a(n) _____ affinity for O2

The lung diffusing capacity, DL, is _____ proportional to the diffusion coefficient of the gas

DLCO may be used to estimate the extent to which _____ passes from the air sacs of lungs into blood

CO2 exhibits _____-limited gas exchange

In emphysema, the DLCO is usually _____

Is the A - a gradient normal, increased, or decreased, in response to diffusion defects (e.g. fibrosis, pulmonary edema)? _____

In the steady state, the respiratory quotient, R, is normally equal to _____

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