Inspired by you and your patients, the bi-level ventilator BiPAP A40 has been designed to combine ease-of-use and comfort with technological innovations that adapt to your patient’s condition to deliver enhanced therapy. The AVAPS-AE fully automatic ventilation mode, supports long term therapy compliance.The Daily Progress Feedback on BiPAP S/T displays a simple trend of the patient's nightly use to help users track their therapy progress.