DreamStation BiPAP AVAPS (with mask)Non invasive Ventilator BiPAP ST Every patient suffering from chronic respiratory disease has changing therapeutic demands. With DreamStation BiPAP AVAPS non invasive ventilation solutions, you have the power to treat them that way. Using clinically proven therapy solutions, DreamStation non invasive ventilators adapt to these changing patient needs, helping to normalize ventilation. SPECIFICATIONS Ventilation pressure 4 to 30 cm H2O (increment is . 5