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ELECTROCARDIOGRAPHY
Arpita Halder
ECG LEAD SYSTEM
Cardiac Axis
BRADYCARDIAS AND AV
CONDUCTION BLOCK
Severe sinus bradycardia
• SA block – pause is twice the P-P interval
• Sinus arrest-pause of 4.4 secs.between the
sinus and junctional escape beat
• 1st degree AV block
2nd degree AV block(Mobitz type I-Wenkebach)
• 2nd degree AV block(Mobitz type II)
3rd DEGREE AV BLOCK
Narrow QRS with a pacemaker in Bundle of His. Broad QRS with a more
distal pacemaker. ↓ P waves.
LBBB
LAHB + RBBB= Bifasc Block
↑PR+LAHB+RBBB=Trifasc Block
ATRIAL ARRHYTHMIAS
Sinus Tachycardia
Atrial Fibrillation
• Atrial Fibrillation
• Atrial Fibrillation
Atrial Flutter is usually due to a single
reentrant circuit in RA
Atrial Flutter
• Atrial Flutter: Rate 150 bpm
JUNCTIONAL TACHYCARDIAS
Commonest kind of AV re-entrant tachycardia occurs with WPW syndrome
BROAD COMPLEX TACHYCARDIA-I
Varieties
VENTRICULAR
Regular
• Monomorphic VT
• Fascicular tachycardia
• RVOT tachycardia
Irregular
• Torsades de pointes tachycardia
• Polymorphic VT
SUPRAVENTRICULAR
• BBB with abberant conduction
• Atrial tachycardia with pre-excitation
BROAD COMPLEX TACHYCARDIA-II
ACUTE MI-I
ANTR WALL MI
ACUTE MI-II
MYOCARDIAL ISCHEMIA
LEFT VENTRICULAR HYPERTROPHY
LVH
CARDIAC ARREST RHYTHMS
AAJ EAI PORJONTO

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ecg Presentation1.pptx