Key Points R Wave Represents Depolarization: The R wave in V1 reflects the initial depolarization of the ventricles, specifically the right ventricle. Height Relative to S Wave: In V1, the…
A 73-year-old woman with past medical history of diabetes mellitus and atrial fibrillation is brought to the emergency department for mild hematemesis. The following ECG is obtained, and the patient…
A 30-year-old man is pulled over by police for speeding. He begins feeling nauseous and has multiple episodes of vomiting. During transport to the emergency department by EMS he is…
A 40-year-old man is brought into the ED after being found in the street and noted to have intermittent seizures. He is tachycardic, hypertensive, and febrile. The following ECG was…
A 22-year-old woman presents to the emergency department with atypical chest pain. Her vital signs are normal. The following ECG is obtained:
HPI: A 76-year-old woman presents to the ED with dyspnea and a syncopal episode. History is limited because the patient is listless and confused. The following ECG was obtained: Case…