It also means that we frequently revisit basic testing issues. Recently, a report with a full panel of tests (spirometry, lung volumes, DLCO) came across my desk. The patient had had a full panel a half a year ago and when I compared the results between the two sets of tests there ...
When it is desired to make an experiment the three-way tap is turned so as to connect with the bag and the expired air collected over a certain period. With violent exercise a bag taking 60 liters will not hold the air expired during one minute, but is has been shown (Krogh [1913]...