Friedrich's Time : 4-6 hours following sustainment of mechanical injuries, T2 victims may become ABC unstable when untreated. It is therefore important to provide first-aid measures within this period of time
By M. Debacker, B. Domres, Walter Hays, J. de Boer, Prehospital and Disaster Medicine, Disaster Terminology, Glossary of New Concepts in Disaster Medicine, USA 2002, http://www.eird.org/isdr-biblio/PDF/Prehospital%20 and%20disaster%20medicine.pdf, (D/DM - Amer) {831}