Trauma is a big killer, and practice has evolved to accept lower blood pressure with the concept of permissive hypotension. In this, the first TiCME Chat session, Dr David Lamond a retrieval and ED specialist and I discuss what traumatic hypotension actually means and what the evidence can tell us about current practices. What do you think? Post a comment or question below! We will cover the concepts of permissive hypotension, damage control resuscitation and haemostatic resuscitation in the next tutorial.