Identifying determinants for the application of physical or chemical restraint in the management of psychomotor agitation on the critical care unit.

Delirium and agitation pose a potential threat to patient safety and the maintenance of life-preserving therapies. Restraint is viewed as one method of preserving patient safety. However, use appears to be influenced by previous adverse experiences and subjective patient descriptors, rather than robust evidence-based knowledge. The need for a precise language to describe restraint and quantify when it becomes necessary is indicated.