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New RBBB and LAFB in ACS: OMI Pattern
Key Points Pattern Recognition: New-onset Right Bundle Branch Block (RBBB) and Left Anterior Fascicular Block (LAFB) occurring together is a high-risk ECG finding. Often associated with proximal Left Anterior Descending…
Acute Pericarditis vs STEMI: DDx
Key Points Acute Pericarditis: A challenging diagnosis with symptoms and ECG findings that may mimic STEMI. STEMI: A more life-threatening and time-sensitive condition. Differentiation from pericarditis is crucial to avoid…
Brugada Syndrome (BrS)
Key Points Life-Threatening Sodium Channelopathy: Predisposes to ventricular arrhythmias (VF/VT) and sudden cardiac death (SCD), often in otherwise “healthy” hearts. When to Suspect BrS: Patients with syncope, unexplained “seizures,” ventricular…
Hypokalemic Periodic Paralysis
Key Points Definition: A rare ion channelopathy that causes sudden, reversible episodes of symmetric flaccid paralysis triggered by low serum potassium. It may be inherited or secondary to thyrotoxicosis or…
WPW Syndrome and Pseudo-MI Patterns
Key Points WPW Pattern Mimics: Wolff-Parkinson-White (WPW) syndrome can produce an ECG pattern that mimics conditions such as myocardial infarction, ventricular bigeminy, accelerated idioventricular rhythm, and electrical alternans. ST Segment…
Hyperkalemia Emergencies
Key Points Severe Hyperkalemia Mimics Several Life-Threatening Conditions: Hyperkalemia can produce a wide range of ECG abnormalities that resemble unstable brady and tachy arrhythmias, STEMI, and can also cause pacemaker…
Arrhythmogenic Cardiomyopathy (ACM)
Key Points Definition & Terminology: Arrhythmogenic Cardiomyopathy (ACM), previously known as Arrhythmogenic Right Ventricular Cardiomyopathy/Dysplasia (ARVC/D), is an inherited disorder characterized by progressive fibrofatty replacement of the ventricular myocardium, predominantly…
LVH vs STEMI: DDx
Key Points LVH Mimicry: Left ventricular hypertrophy (LVH) can mimic anterior coronary occlusion and is a common cause of “false-positive” cath lab activations. Diagnostic Challenge: LVH with strain pattern can…
Early Repolarization vs STEMI: DDx
Key Points Differentiation Challenge: Early repolarization (ER) is a benign ECG pattern often seen in healthy young individuals, characterized by ST segment elevation that can mimic STEMI and acute pericarditis….
Upright T Waves in V1
Key Point Normal T Wave in V1: The normal ECG typically shows a flat or inverted T-wave in lead V1. Upright T-Wave Abnormality: An upright T-wave in V1 (TV1) should…
WPW with Antidromic SVT
Key Points WPW Syndrome: Wolff-Parkinson-White (WPW) syndrome is a condition characterized by ventricular pre-excitation due to a congenital accessory pathway in patients with symptomatic arrhythmias. ECG Recognition: The classic WPW…
WPW with Orthodromic SVT
Key Points WPW syndrome is caused by congenital ventricular pre-excitation via an accessory pathway. The classic sinus rhythm pattern includes a short PR interval, delta wave, and a widened QRS,…
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