Deaths between bedrails and air pressure mattresses.
OBJECTIVE
To describe how patients die by becoming trapped between therapeutic air pressure mattresses and bed rails.


METHODS
A retrospective review of all voluntary reports deaths in beds with air mattresses that can be found in the Food and Drug Administration's on-line databases of adverse medical events that cover 1994 to 2001.


METHODS
Death reports come from manufacturers, medical staff, and coroners and describe deaths in hospitals, nursing homes, and home care, although type of care site is often not given.


METHODS
Event descriptions were reviewed to determine how the person became entrapped in the rail and how responsibility for the event was allocated.


RESULTS
There were 35 deaths involving many product lines. Twenty-one deaths involved overlay air mattresses placed on top of a regular mattress. Thirteen patients died in beds with built-in air mattresses. Compression of the mattress allowed an off-center person to slide against the rail where reexpansion of the mattress kept the person compressed against the rail. Two patterns were seen. In one, the mattress bunched up behind a person who was lying on the side of the bed, pushing the neck against a bedrail. In the second type, a patient died after sliding off the bed and having the neck or chest compressed between the rail and bed. Manufacturers attributed the deaths to poor clinical decision-making or inadequate monitoring.


CONCLUSIONS
Lethal asphyxiation in beds with air pressure mattresses is a variant of bedrail-mattress entrapment that requires redesign by bed manufacturers and risk awareness by clinicians.
Center for Bioethics, Department of Medicine, University of Minnesota, 504 Boynton Hall, 410 Church Street, Minneapolis, MN 55455, USA. miles001@umn.edu
Steven H
SH
Miles
D001237:Asphyxia / Q000209:etiology* / Q000401:mortality*; D001513:Beds / Q000009:adverse effects*; D004868:Equipment Failure; D004869:Equipment Safety; D006801:Humans; D012189:Retrospective Studies