❓ What is AVNRT? AVNRT (Atrioventricular Nodal Reentrant Tachycardia) is the most common type of supraventricular tachycardia (SVT). It happens when a reentrant circuit forms within the AV node, causing rapid, regular heartbeats. Common symptoms include palpitations, dizziness, and shortness of breath. 📉 Key ECG Features: · No visible P waves (simultaneous atrial & ventricular activation). · Pseudo R' wave in lead V1 (retrograde P wave distorting the terminal portion of the QRS). · Pseudo S wav

Atrioventricular Nodal Reentrant Tachycardia (AVNRT): Mechanism & Management 🔹 Primary Mechanism & Ablation Target AVNRT is a macro-reentrant supraventricular tachycardia dependent on dual atrioventricular (AV) nodal physiology. The typical (slow-fast) circuit uses the slow pathway for antegrade conduction and the fast pathway for retrograde conduction. Catheter ablation targeting the slow pathway is the definitive therapy. The standard anatomical target is the right inferior nodal extension wi

✨Visual Guide to Supraventricular Tachycardia (SVT) Differentiation. Distinguishing supraventricular tachycardias is critical for management.This concise visual compares mechanisms and hallmarks of AFib, AFL, AT, AVNRT, and AVRT—a valuable reference for clinicians, trainees, and students. #Cardiology #Electrophysiology #SVT #AFib #ECG #MedEd #HeartRhythm #ClinicalPearl | Abdallah Othman