Skip to main content
DDx Episode 4

The near-miss

11 minutes



Sam Ashoo is a practicing emergency physician in the US (Florida). He is certified by the American Board of Emergency Medicine and is the author of He has over 15 years experience in clinical practice and serves as a clinical assistant professor of emergency medicine at the Florida State University College of Medicine. In addition to teaching, he has a passion for medical administration and patient flow.


Dr. Stiegler is a Harvard-trained physician specializing in anesthesiology. Since 2005, her academic focus for research, writing, and speaking has been the application of behavioral psychology to patient safety in medical settings. She has given over 100 presentations across the globe on the role of cognitive bias in medical decision making, expertise, and error. Her publications can be found here. Dr. Stiegler also has a professional blog and can be followed on Facebook and Twitter at @drmstiegler. Her book “Quality and Safety in Anesthesia and Perioperative Care is available on Amazon.


A 45-year-old woman presents to the emergency department after experiencing an episode of acute abdominal pain and brief blindness in her right eye. Her symptoms have since resolved and she feels fine. She’s sure she is wasting emergency medicine physician Dr. Ashoo’s time. She isn’t.