Respiratory investigations

There are many investigations in respiratory medicine, ranging from basic tests to more invasive procedures. Respiratory investigations are the final pieces in the jigsaw to help respiratory nurses and nurse practitioners reach a diagnosis. Many nurses do not work in specialized respiratory units and will not have access to the most sophisticated investigations. However, all respiratory nurses should understand what tests are available, be aware of how the tests are performed, and of any preparation required before and after the test, so they can explain these procedures to their patients. This chapter offers an insight into the application of respiratory investigations and their role in specialized respiratory units.