ARRHYTHMIA
MD MASHIUL ALAM
MBBS MD
Assistant Professor of Cardiology, JIMCH
NORMAL WAVES
Waves and intervals
How to read ECG
• Check Name, age, calibration
• Rate
• Rhythm
• Axis
• Waves
Normal ECG findings
• Tachycardia and T wave inversion in children
• T wave inversion in V1 to V2 and inferior leads in female
• Early repolarization (ST elevation) in V2 to V4
• RBBB
• High voltage and Tall T wave in young person
• Low voltage in obese and COPD patient
Sinus rhythm and normal sinus rhythm
Arrhythmia
Tachyarrhythmia
AF, VT, VF, SVT,
JT, AT
Bradyarrhythmia
AV block, SSS
Tachyarrhythmia
Atrial Fibrillation
Cause: RITHI
Complication: Thromboembolism (Stroke)
Heart Failure
Shock
Treatment: Rate control
Rhythm Control
Prevention of thromboembolism- CHA2DS2VASx, HASBLED
Treatment of the cause
Ventricular Tachycardia
Cause: Ischemic Heart disease
Cardiomyopathy
Electrolyte imbalance
Complication: Heart Failure
Death
Treatment: DC shock, Amiodarone, Lignocain, IV Magnesium, Anti-
tachycardia pacing
Betablocker, Antiarrythmic drugs, ICD, Surgery
Ventricular fibrillation
Cause: same as VT
Complication: Same as VF
Treatment: Asynchronized DC shock, CPR
check underlying cause, ICD, Radiofrequency Ablation, Anti Arrhythmic
drugs
Supraventricular tachycardia
Cause: Re-entrant pathway Micro---AVNRT
Macro / Accessory pathway/ WPW syndrome/ AVRT
Complication: HF, Cardiac arrest, Shock
Treatment: Vagal maneuver (Carotid sinus message, Valsalva etc)
IV adenosine
IV Verapamil
Digoxin, BB, Flecainide
DC shock
Catheter ablation, BB, Verapamil
Bradyarrhythmia
AV block
1st degree 2nd degree
3rd degree or
complete
1st degree
Prolonged PR interval
2nd degree
• Mobitz Type I and Type II 2nd degree AV block
Complete heart block
SSS
• Bradycardia
• Sinus arrest / block
• Tachycardia – bradycardia syndrome
• Paroxysmal AF/ AT
• Associated with AV block
THANK YOU

Arrhythmia for undergraduates