By Jayne Rutledge As technology advances, more and more inventions in the healthcare sector are coming up to improve on efficiency in diagnosis and management of diseases. One of the most notable technological inventions in the recent past is in spirometers. They are used in spirometry to measure the amount of air found in a COPD patient. A spirometer will measure the vital capacity, the forced expiratory volume as well as the expiratory flow rate in the lungs. The good thing is that it is a simple and straight-forward device to use. This has been made even simpler by the fact that there are training materials and manuals available online from manufacturer's and dealer's websites. Because of the need for COPD patients to constantly monitor their lung function, today it is possible for patients to purchase these devices and use them at home. Most of the devices in the market today are FDA approved. This gives one the peace of mind that comes with knowing they are able to in...