Orthodromic vs. Antidromic AVRT: The Loop Determines the QRS In AVRT, the circuit includes both the native conduction system and an accessory pathway (AP). The direction of impulse travel dictates the ECG morphology. 🔁 Orthodromic AVRT (Narrow QRS) • Down: AV node → His-Purkinje system (normal ventricular activation). • Back: Retrograde via the AP to the atria. • ECG: Narrow complex (unless aberrancy). ⚡ Antidromic AVRT (Wide QRS) • Down: AP directly into the ventricle (pre-excitation). • Back:
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Orthodromic vs. Antidromic AVRT: The Loop Determines the QRS In …
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A breakdown of AVRT, a condition related to Wolff-Parkinson-White SYNDROME (WPW), as compared to AVNRT, a distinct dysrhythmia associated with a pathology unrelated to WPW. | EMS Avenger
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A breakdown of AVRT, a condition related to Wolff-Parkinson-White S…
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Atrioventricular Reentrant Tachycardia (AVRT) ✨(AVRT) is a type of supraventricular tachycardia (SVT) caused by a reentrant circuit involving the AV node and an accessory pathway (AP). Pathophysiology - Reentry circuit: AV node accessory pathway (AP). - Orthodromic (90%): Narrow QRS ➡️ AP retrograde. - Antidromic (10%): Wide QRS ⚠️ (mimics VT). 📈 ECG Signs: - Orthodromic: Retrograde P wave after QRS, ❌ delta wave during tachycardia. - Antidromic: Wide QRS, delta wave in sinus rhythm (WPW). - WP
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Atrioventricular Reentrant Tachycardia (AVRT) ✨(AVRT) is a …
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🔁 AVRT Quick Visual Guide. 1️⃣ Orthodromic AVRT (Most Common): → Pathway: Antegrade AV node ➡️ Retrograde accessory pathway. → ECG: Narrow QRS, retrograde P waves (RP > PR). → Key: Classic in WPW syndrome. 2️⃣ Antidromic AVRT (Rare): → Pathway: Antegrade accessory pathway ➡️ Retrograde AV node. → ECG: Wide QRS (mimics VT), retrograde P waves (often buried). → Key: Riskier due to preexcitation. #Cardiology #Electrophysiology #AVRT #WPW #ECG | Abdallah Othman
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🔁 AVRT Quick Visual Guide. 1️⃣ Orthodromic AVRT (Most Commo…
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Wide Complex Tachycardia: Management of Ventricular Tachycardia, SVT With Aberrancy and AVRT
Wide Complex Tachycardia: Management of Ventricular Tachy…
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👇WPW Syndrome (Part 1) Overview of the Basics: Delta Wave, Maximal Pre-excitation, Orthodromic and Antidromic AVRT, and FBI Tachycardia👇 👉 Antegrade conduction through the AVN and accessory pathway leads to fusion. 👉 Orthodromic AVRT: Antegrade conduction through the AVN → narrow QRS complex. 👉 Antidromic AVRT: Antegrade conduction through the AP → consistently wide QRS complex. 👉 FBI Tachycardia: Complete chaos → Medical emergency! The AP must be ablated before the patient leaves the hosp
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👇WPW Syndrome (Part 1) Overview of the Basics: Delta Wave, Maximal P…
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💡 Wolff-Parkinson-White (WPW) Syndrome: ECG & Clinical Essentials Key ECG Features: · Short PR interval ( 120 ms) Pathophysiology: Accessory pathway(Bundle of Kent) bypasses AV node → premature ventricular excitation Clinical Red Flag: AFib WPW = Medical Emergency · Irregular wide-complex tachycardia · Some RR intervals may approach 300 bpm · Risk of degenerating into VF Critical Management: · Avoid AV nodal blockers (verapamil, digoxin, beta-blockers) · Use: Procainamide or immediate cardiover
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💡 Wolff-Parkinson-White (WPW) Syndrome: ECG & Clinical Essenti…
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Alright this is our type B WPW. You have a dominant S wave in V1. No…
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