This month’s ALiEM Journal Club discussed Perry et al’s 2013 paper Clinical Decision Rules to Rule Out Subarachnoid Hemorrhage for Acute Headache. If you haven’t already, check out the awesome collaborative vodcast featuring ALiEM Editors, Annals of EM Editors and the Authors! If you can’t spare 30 minutes, watch at double speed. I suspect the Ottawa SAH rule may be destined to join the ranks of Stiell et al’s other Canadian exports (the Canadian CT …