Respiratory function tests: Which one and for whom?

Abstract

Respiratory function tests have a routine clinical application in the practice of pneumology. They are useful in diagnosing respiratory diseases and make it possible to evaluate responses to treatments and to monitor functional progression. Also, they are important in evaluating perioperatory risks as well as prognoses in a variety of diseases. This article adopts a practical point of view in reviewing the respiratory function tests that we consider most easily available and most useful. The objective is to facilitate clinical physicians determine the test(s) they should request according to the characteristics of different patients. Finally, it emphasizes the fact that in most cases it is advisable to assess both respiration mechanics and the exchange of gases.