Fig. 1
From: The total-breath method yields higher values of DLCO and TLC than the conventional method
Illustration of the two approaches regarding the total-breath method (TB) using a rapid gas analyzer (RGA) and the conventional sampling (CS) of the inert tracer gas during expiration in the single-breath assessment of CO diffusing capacity of the lung. Although the RGA provides a continuous signal over the whole course of expiration, in the CS method only a defined sample of 500 mL is used (see Materials and methods)