Accessory Pathways & WPW | Harrison Simplified

This video is the final video of the AV nodal–dependent SVTs series, based on Harrison’s Principles of Internal Medicine, 22nd edition. Topics covered: 00:00 – Introduction 00:49 – Overview of Accessory Pathways (etiology, prevalence, anatomical location) 01:52 – Mechanism of Pre-excitation & Key ECG Findings (short PR interval, delta wave, widened QRS complex) 04:23 – Delta Wave Mapping & Accessory Pathway Localization 05:58 – Variants of Accessory Pathways 10:14 – Atrioventricular Reentrant Tachycardia (AVRT):   – Orthodromic AVRT (mechanism, ECG characteristics, differentiation from AVNRT) 17:34 – Permanent Junctional Reciprocating Tachycardia (PJRT) 19:51 – Pre-excited Tachycardias (Antidromic AVRT) 21:31 – Pre-excited Atrial Fibrillation & Clinical Risk 24:10 – Acute Management of AVRT & Pre-excited Atrial Fibrillation (guideline-based) 30:08 – Approach to Wolff-Parkinson-White (WPW) Patients:   – Risk stratification of accessory pathways   – Non-invasive and invasive (EPS) evaluation 38:06 – Chronic Management of WPW:   – Symptomatic vs. asymptomatic patients (guideline-based) 45:03 – Summary PDF SLIDES : https://drive.google.com/file/d/12WT_cnr8GydXOTlFPHIkYjKIRviKkTok/view?usp=drive_link