What is the difference between CPAP and NIV

CPAP is a form of NIV. NIV (or non-invasive ventilation) is the umbrella which covers all different types of this modality. CPAP (or continuous positive airway pressure) is just one of many types of NIV. Bipap (or bi-level positive airway pressure) is also included under the NIV umbrella.

/----------

Noninvasive ventilation (NIV) is the technique of supplying positive pressure ventilatory support to the airways through masks attached to a patient is nose or mouth. This support can be in the form of a constant positive airway pressure throughout the ventilatory cycle (eg, continuous positive airway pressure [CPAP]).

The above is a snippet from the site listed below.

l hope that u find the FULL explaination given there to be what u need to know.

----------/