The Asthma Breathing Record Study

The study involves a new device, called 'N-Tidal C', which uses a method that has the potential to predict when asthma attacks are about to happen. The device works by accurately measuring an individual's exhaled CO2 waveform. A person has to breathe in and out through the mouthpiece at their normal relaxed rate of breathing. It does not need any extra effort and therefore has considerable benefits over current breathing tests which require significant patient effort.