This text began as a series of notes for respiratory therapy students who were interested in learning to perform pulmonary function tests. In the 1970s, a great deal of time was devoted not only to performing the physiologic measurements but also to manually measuring graphic recordings and calculating the results. Much has changed over the past 40 years in regard to performing pulmonary function studies. Most notably, microprocessors have supplanted the drudgery of measuring and calculating, so that the results of complicated tests are available almost as soon as the patient has completed the maneuver. While this permits the person conducting the test to concentrate on acceptability and repeatability, it may allow the tester to give minimal attention to the physiology responsible for the patient’s symptoms. With few exceptions, the physician treating the patient no longer performs the test but relies on a technologist to make the measurements that will determine a course of therapy or whether additional studies might be needed. Understanding respiratory physiology has taken a back seat to learning how to navigate sophisticated computer software
Các bạn tải tài liệu tại đây nhé DOWNLOAD