AVNRT vs. AVRT: AVNRT: Microreentry within the AV node. · ECG: Short RP interval. P wave typically buried (pseudo R' V1). · Baseline: No pre-excitation. AVRT: Macroeentry utilizing an accessory pathway. · ECG: Long RP interval. Discrete retrograde P wave in ST segment. · Baseline: Often exhibits pre-excitation (WPW pattern). Critical: Pre-excited AF requires avoidance of nodal blockade. Like ✅ | Share 🔁 | Comment 💬 #Cardiology #Electrophysiology #SVT #ECG #HeartRhythm | Abdallah Othman

🔁 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

✨👉🏻SVTs Atrial Tachycardia, AVNRT (Atrioventricular Nodal Reentrant Tachycardia), and WPW (Wolff-Parkinson-White Syndrome) #Electrophysiology #SVT #Cardiology #ECG #wpw #avnrt #Tachycardia #Arrhythmia #EPeeps #MedEd | Abdallah Othman

805 reactions · 11 comments | SVTs Atrial Tachycardia, AVNRT (Atrioventricular Nodal Reentrant Tachycardia), and WPW (Wolff-Parkinson-White Syndrome) #Electrophysiology #SVT #Cardiology #ECG #wpw #avnrt #Tachycardia #Arrhythmia #Ablation #EPeeps #MedEd #FOAMed | Abdallah Othman | Facebook

Atrioventricular reentrant tachycardia. Atrioventricular Re-entry Tachycardia (AVRT) is a type of paroxysmal supraventricular tachycardia (PSVT) caused by accessory pathways. It involves a re-entry circuit between the AV node and the accessory pathway. There are two types: orthodromic AVRT (narrow complex rhythm) and antidromic AVRT (wide complex rhythm). Coumel’s sign helps differentiate between orthodromic AVRT and AVNRT. In typical AVNRT, retrograde P waves occur early, while in AVRT, they oc