Continuous Positive Airway Pressure (CPAP) devices are the ‘gold standard’ in the treatment of Obstructive Sleep Apnoea (OSA). They work by maintaining an open airway, delivering air pressure to the upper airways via a mask. There are two main types of ‘CPAP’ devices – Constant (or fixed) pressure (CPAP), and Automatic pressure (APAP).  Although either of these can be used to treat OSA, they each vary in their features, functions and suitability to meet patient needs.  The SleepGP has been up-skilled to clinically assess which device is more suitable in your circumstance.