Analysis of the electrocardiogram can reveal all of the following, except the
a) condition of the conducting system.
b) heart rate.
c) stroke volume.
d) effects of drugs and poisons.
e) duration of the ventricular action potential.

Which of the following are considered general purposes of performing pulmonary function tests (pfts)? 1. the functional status of the lungs 2. the diffusion characteristics of the alveolar-capillary membrane 3. how much and how fast gas can be moved into and out of the lungs 4. the specific diagnosis of pulmonary disease