Comparison of two flow generators with a noninvasive ventilator to deliver continuous positive airway pressure: a test lung study.

Objective: To compare the performance of two continuous flow generators with a ventilator designed for noninvasive positive pressure ventilation (NPPV) to deliver continuous positive airway pressure (CPAP). The performance of flow generators using different oxygen pressure supplies was also compared.

Design And Setting: Experimental study using a mechanical lung model in a university research laboratory.