Explore top gifts · Shop stocking stuffers. The term noninvasive positive-pressure ventilation (abbreviated NPPV or NIPPV) was previously used to distinguish it from noninvasive negative-pressure ventilation, but given the latter's . Noninvasive ventilation can often eliminate the need for intubation or tracheos-tomy, preventing such problems as injury to the vocal cords or trachea and lower respiratory tract infections.