Manual CPAP: A manual CPAP machine adjusts flow to maintain a constant level of pressure chosen by your physician. The machine makes sure that the desired pressure stays steady throughout your sleep.
AutoPAP or AutoCPAP: AutoPAP stands for automatic positive airway pressure. The autoPAP machine “automates” the pressure setting to match your need at the moment. These machines move the level of pressure up and down as needed by looking for obstructions or pauses in breathing. When breathing is less obstructed, it ramps down the pressure. When breathing is more obstructed, it ramps up the pressure. AutoPAP machines work a bit like cruise control in a car! As we move in our sleep, for example, the degree of obstruction in the airway changes, and the autoPAP machines adjust in real time with those changes.
If you have used a manual CPAP machine in the past and had trouble getting comfortable, ask your physician if autoPAP is an option for you. The autoPAP machines start out with less force when you are settling into bed and drifting off to sleep, making them easier to adjust to for many people.
Bi-level Machines (BiPAP, VPAP): Bi-level machines provide varying levels of pressure while you breathe in and out. These machines provide more pressure and flow during inspiration and a lower level of pressure and flow during exhalation. These devices push air in when you breathe in. Companies that manufacture bi-level machines use different proprietary terms to describe them, such as BiPAP (bilevel positive airway pressure) and VPAP (variable positive airway pressure). Sometimes people who need a high level of pressure to overcome their obstructive sleep apnea find it difficult to breathe against the machine flow. This is because the CPAP or AutoPAP machines generate higher pressures by pushing out higher flows of air. Bi-level machines can make these people much more comfortable.
Bi-level may also be ordered for patients with certain types of lung diseases to help them take in deeper breaths during sleep. People with central apnea also benefit from a bi-level machine since it can be set to push a breath into the lungs at regular intervals. Bi-level machines are the most tuned in to the user, so they are also the most expensive.
Are you worried that CPAP machines will get in the way of living your life or enjoying sleep? Let us help you! Selecting the machine and mask that fits your needs best is the ticket to better sleep at night and happier, healthier days.
Helpful hint: If you tried manual CPAP in the past and just could not get comfortable, the newer autoPAP machines may really change your mind! Unless your physician prescribes strictly manual CPAP, give autoPAP machines a good look.