Non-invasive ventilation is the delivery of oxygen via a face mask and is used in the treatment of respiratory failure in chronic obstructive pulmonary disease, cardiogenic pulmonary oedema, and other respiratory conditions. Because patients rely upon ventilation systems to breathe, it is essential to monitor patients' respiratory function on an ongoing basis. However, this monitoring can prove to be difficult, particularly when patients receive ventilation treatment outside of the hospital and in their homes. As such, this book provides extensive detail concerning the monitoring of non-invasive mechanical ventilation systems in a variety of contexts.