This document contains ECG readings and descriptions of various cardiac conditions including: multifocal atrial tachycardia, atrial flutter with 2:1 AV block, paroxysms of atrial tachycardia, ventricular tachycardia with AV dissociation, inferior wall myocardial infarction, sinus rhythm with atrial ectopics and complete heart block, acute inferior myocardial infarction, polymorphic ventricular tachycardia, and wide complex tachycardia suggestive of left anterior descending artery involvement. The document aims to teach identification of cardiac conditions based on ECG features.

1. ECG QUIZ DR.B.Gowrishankar MD pg Prof.DR.G.Sundaramurthy’s unit(M7)

4. Features of multifocal atrial tachycardia -different P wave morphology -narrow complex, irregular tachycardia.

6. Atrial Flutter with 2:1 AV block -flutter line -QRS rate is half the flutter rate.

8. Saw tooth waveform (250-350 bpm) Irregular AV conduction -QRS complexes conducted in 3:1 & 4:1 ratio Non-specific intraventricular conduction delay (RsR’ complexes in II,aVF & V6.

10. Features of this ecg -paroxysms of atrial tachycardia rate of 150 bpm. 3:2 sinoatrial exit block Normal QRS axis.

12. Ventricular tachycardia, 160 bpm, RAD +100` -wide complexes & AV dissociation -a capture beat -a fusion beat.

14. Sinus rhythm-monomorphic wide complex tachycardia. AV Dissociation ,independent atrial activity. Features of Inferior wall MI -deep Q waves,ST elevation & T wave inv. In leads III and aVF. -reciprocal ST depression in leads I & aVL.

16. Sinus rhythm –atrial ectopics. RAD, incomplete RBBB pattern Complete heart block. Acute inferior MI -ST elevation in leads II & III -reciprocal changes in leads I,V4-6. Polymorphic VT -multiple morphologies -varying R-R intervals

21. Wide complex tachycardia LAD --60` A short R-S interval No AV dissociation.

22. Thank you