Ventilator-disconnect and death: a case study and a safety device.

Deaths and injuries related to accidental ventilator disconnection occur in complex ways. A death related to accidental ventilator disconnection is presented from a subacute ventilator facility, and corrective action is discussed. Single-limb ventilators are now equipped with a flow-bypass coupling that prevents patient-side occlusion during disconnect and therefore prevents low-pressure alarm malfunction. Physicians and respiratory therapists can consider this device to prevent partial or total occlusion of the ventilator tracheostomy adapter, thus allowing a low-pressure alarm in the event of a disconnect.