In all situations, it is important hat we are able to breath freely as our bodies need oxygen which is crucial in cell functions. Our brains especially crave oxygen when people fall ill sometimes, doctors may wish to examine them and determine the levels of oxygen in their bodies and blood. For this purpose they will need to use a spirometer.
A spirometer is a device that is used by doctors, nurses and medical health practitioners in order to determine the necessary amount of oxygenated blood reaching the brain, heart and basically the lungs.
All these information will be provided and delivered by the spirometer which is indeed a useful device.