How to Measure the PR Interval on an EKG Strip | PR Interval EKG Quiz
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A First-Degree AV Block is characterized by a prolonged conduction time through the AV node, resulting in a PR interval greater than 0.20 seconds. Every P wave is still followed by a QRS complex, meaning no beats are actually dropped—it's just a delay. ​Key ECG Finding: PR Interval > 0.20 seconds (or > 5 small boxes) ​Significance: Usually asymptomatic and benign, but important to monitor as it can sometimes progress to a higher-grade block. ​#EKG #ECG #heartblockage #HeartBlock #cardiology | Ho
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Cardiology on Instagram: "🔹 Classification of AV Blocks 1️⃣ First-Degree AV Block • ECG finding: 👉 PR interval > 0.20 sec, लेकिन हर P के बाद QRS • Meaning: AV node में delay है, block नहीं • Usually: Asymptomatic • Treatment: Usually no treatment needed ⸻ 2️⃣ Second-Degree AV Block कुछ impulses conduct होते हैं, कुछ drop हो जाते हैं A) Mobitz Type I (Wenckebach) • PR interval gradually prolong • फिर एक QRS drop • Site: AV node • Cause: Increased vagal tone, drugs (β-blockers, digoxin) • Benign
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