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Regularly Irregular Rhythms: Sorting Mobitz from PACs and Other Causes
A 52-year-old woman presents to the emergency department with weakness. The following ECG is obtained:
Grouped Beats: A Subtle AV Block Pitfall
An elderly patient is brought to the emergency department with acute stroke symptoms and the following routine 12-lead ECG is obtained during the patient’s stroke evaluation:
High-Grade AV Block: New Perspectives and Important Clarifications
A 51-year-old man presents to the emergency department via EMS with nausea, vomiting, weakness, severe bradycardia (HR in the 20s), and hypotension (BP 60s systolic). The following ECG is obtained…
Mobitz I or Mobitz II: How to tell the difference
A 79-year-old man is sent to a community hospital for evaluation of bradycardia discovered at his nursing facility. He is ultimately transferred to a tertiary care facility for consideration of…
Bradycardia, STEMI, and a Misleading Rhythm Diagnosis
A 68-year-old woman calls EMS after having a syncopal episode while using the bathroom. She reports associated chest pain over the past day. The following prehospital ECG is obtained:
Small ECG Changes, Big Clinical Wins: How Repeat ECGs Save Lives
A 64-year-old man with PMHx of hypertension and obesity presents to the emergency department with 2 days of worsening chest pain. Pain is central, intermittent, worsens with exertion, and has…
Beyond ST Elevation: Guideline Based Cath Lab Activation
A 61-year-old woman with PMHx of prior MI presents with acute midsternal chest pain that radiates to the left shoulder. Symptoms have been intermittent for the fast few weeks, without…
Recent University of Maryland Medical Center Cases (Part V)
A 67-year-old man presents with profound generalized weakness and inability to move his extremities or get out of bed. He has a history of hypertension, chronic kidney disease, substance use…
Recent University of Maryland Medical Center Cases (Part IV)
A 73-year-old man is brought to the emergency department with palpitations. The following ECG is obtained on arrival:
2025 ECG Competition Answers (Part 3/3)
This week we review the answers to questions 10-14 from the 13th Annual UMEM Residency ECG Competition. Make sure to attempt to answer the questions yourself before watching the video…
2025 ECG Competition Answers (Part 2/3)
This week we review the answers to questions 6-9 from the 13th Annual UMEM Residency ECG Competition. Make sure to attempt to answer the questions yourself before watching the video…
2025 ECG Competition Answers (Part 1/3)
This week we review the answers to questions 1-5 from the 13th Annual UMEM Residency ECG Competition. Make sure to attempt to answer the questions yourself before watching the video…
Recent University of Maryland Medical Center Cases (Part III)
A 59-year-old man presents to the emergency department with chest pain and palpitations. The following ECG is obtained on arrival:
Recent University of Maryland Medical Center Cases (Part II)
A 72-year-old woman presents to the emergency department with lightheadedness and near-syncope. The following ECG is obtained on arrival:
Recent University of Maryland Medical Center Cases (Part I)
A 67-year-old man presents to the emergency department with chest pain and palpitations. The following ECG is obtained on arrival:
Optical Illusions and 12-Lead ECGs: How First Impressions Can Mislead
A 42-year-old woman presents to the emergency department with chest pain, shortness of breath, and palpitations. Her blood pressure and mental status are noted to be normal. The following ECG…
Aslanger’s Pattern and the Limits of Traditional STEMI Criteria
A 76-year-old man presents to the emergency department with shortness of breath, severe weakness, diaphoresis, and confusion. The following ECG is obtained on arrival:
2025 Clinical Guidelines for the Management of Acute Coronary Syndromes: Key Highlights
A 90-year-old woman presents to the emergency department with acute chest pain, nausea, and shortness of breath. She has two negative troponins 6 hours apart. The following ECG was obtained…
Unrecognized Killers in Emergency Electrocardiography, Part III
A 55-year-old woman with a history of hypertension, diabetes, and tobacco use presents to the emergency department with chest heaviness and shortness of breath. Her initial ECG raised immediate concern…
Unrecognized Killers in Emergency Electrocardiography, Part II
A 46-year-old woman presents after two syncopal episodes associated with palpitations. She reports feeling a rapid heart rate before losing consciousness. She has a few witnessed episodes in the emergency…
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