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Explain me 10 common heart diseases with ECG changes and ECG images of those diseases

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myocardial infarction STEMI ECG ST elevation

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atrial fibrillation ECG electrocardiogram

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heart block complete AV block third degree ECG

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ventricular tachycardia ECG wide QRS tachycardia

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hypertrophic cardiomyopathy ECG left ventricular hypertrophy

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pulmonary embolism ECG S1Q3T3 right heart strain

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pericarditis ECG saddle shaped ST elevation diffuse

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Wolff-Parkinson-White syndrome WPW ECG delta wave pre-excitation

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heart failure dilated cardiomyopathy ECG left bundle branch block

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long QT syndrome QTc prolonged ECG torsades de pointes

Here's a complete breakdown of all 10 conditions with their ECG images and key findings:
Coverage summary:
  1. STEMI — ST elevation, Q-waves, reciprocal changes; localized by lead territory to identify culprit artery
  2. Atrial Fibrillation — Absent P-waves, irregularly irregular rhythm; the most common sustained arrhythmia
  3. Complete Heart Block — AV dissociation; P-waves and QRS march independently; requires pacemaker
  4. Ventricular Tachycardia — Wide-complex tachycardia with AV dissociation; fusion/capture beats are diagnostic
  5. Hypertrophic Cardiomyopathy — Giant T-wave inversions (especially apical HCM) + LVH voltage criteria
  6. Pulmonary Embolism — Sinus tachycardia + S1Q3T3 + RBBB pattern; reflects acute right heart strain
  7. Acute Pericarditis — Diffuse saddle-shaped ST elevation + PR depression; distinguished from STEMI by diffuse distribution and concave morphology
  8. WPW Syndrome — Short PR + delta wave + wide QRS; risk of sudden death with rapid AF conduction
  9. Dilated Cardiomyopathy — LBBB pattern dominates; basis for cardiac resynchronization therapy (CRT)
  10. Long QT Syndrome — Prolonged QTc ≥500 ms is high risk; T-wave morphology differs by genetic subtype; can precipitate fatal Torsades de Pointes

Create a detailed ECG interpretation guide as a PDF handout

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