Advances in diagnostic services make patient care safer and more efficient. A decade ago, many providers relied on exploratory surgery to find out what was wrong with a patient. Today, healthcare providers use , which is a noninvasive procedure, instead of exploratory surgery.

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