Modifying a CPAP or BiPAP machine for passive ventilation (or assisted suicide)
starts, while increasing it again for the next breath. These dual- pressure devices (BiPAP machines) use a sealing face mask to deliver oxygenated air to the lungs. BiPAP machines provide passive ventilation.
Passive ventilation with a BiPAP machine can be of significant benefit to a COVID sufferer who has compromised lung function. This is because the raised air pressure keeps the lungs better aerated, and reduces collapse of the alveoli. Passive ventilation can also lower fluid exudate into the lungs. While not as effective as full, active ventilation CPAP and BiPAP machines are much cheaper and easier to fit. And, as there is no throat tube, the person receiving the passive ventilation is conscious and can still communicate.
Note, though, one problem with this technique is that the expired breath contains a high virus load. Ejecting this used air into a room, presents a considerable risk to anyone caring for the patient.
