The chaos and rapidity associated with the ED make it an environment much more prone to diagnostic error.1 96% of these incidents involving missed diagnoses can be attributed to various cognitive biases/factors.2 The consequence of these biases ultimately lead to incomplete H/P’s (20-42% of errors),2,3 failure to consider competing diagnoses (32% of errors),3 or failure to order or follow-up on investigations (44-58% of errors).2,3 So what can be done? Presented below are 6 …