ECG text summaries written by Dr. Ali Farzad. Please email him directly with any questions, comments, or suggestions here. Or you can find him on twitter @alifarzadmd

Disclaimer: The information in this writing is the opinion of the authors and does not necessarily represent the official opinion of the University of Maryland School of Medicine or the Department of Emergency Medicine at the University of Maryland School of Medicine. For Health Care Practitioners: This writing is provided only for medical education purposes. Although the authors have made every effort to provide the most up-to-date evidence-based medical information, this writing should not necessarily be considered the standard of care and may not reflect individual practices in other geographic locations. For the Public: This writing is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Your physician or other qualified health care provider should be contacted with any questions you may have regarding a medical condition. Do not disregard professional medical advice or delay seeking it based on information from this writing. Relying on information provided in this writing is done at your own risk. In the event of a medical emergency, contact your physician or call 9-1-1 immediately.