5-Ventricular Depolarization & Special Waves

Go beyond the standard QRS complex to identify subtle morphological signs that indicate structural and electrical cardiac disease. This video provides strict millimeter-and-millisecond criteria for distinguishing physiological septal Q waves from pathological myocardial infarction patterns. We explore the diagnostic differential for tall R waves in V1 and aVR, including posterior MI, right ventricular hypertrophy, dextrocardia, and sodium-channel blocker toxicity. The lesson concludes with deep dives into pathognomonic specialty waves: the Osborn (J) wave of hypothermia, the Delta wave of Wolff-Parkinson-White (WPW) pre-excitation, and the Epsilon wave of Arrhythmogenic Right Ventricular Dysplasia (ARVD)