Gas exchange — Flashcards

Does the conducting zone of the lung participate in gas exchange? _____

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

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

Normally 1g of hemoglobin can bind _____ mL of O2

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

CO2 exhibits _____-limited gas exchange

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

In emphysema, the DLCO is usually _____

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

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