This section reviews all common ECG findings including normal and abnormal. Each review includes example 12-lead ECGs and, where appropriate, specific criteria.

Atrial Arrhythmias

• Atrial Fibrillation ECG Review
• Atrial Flutter ECG Review
• Atrioventricular Nodal Reentrant Tachycardia (AVNRT) ECG Review
• Atrioventricular Reentrant Tachycardia (AVRT) ECG Review
• Ectopic Atrial Rhythms ECG Review
• Multifocal Atrial Tachycardia (MAT) ECG Review
• Premature Atrial Contractions (PACs) ECG Review
• Sinoatrial (SA) Exit Block ECG Review
• Sinus Arrhythmia ECG Review
• Sinus Bradycardia ECG Review
• Sinus Tachycardia ECG Review
• Wandering Atrial Pacemaker (WAP) ECG Review

Chamber Enlargements

• Left Atrial Enlargement (LAE) ECG Review
• Left Axis Deviation (LAD) ECG Review
• Left Ventricular Hypertrophy (LVH) ECG Review
• Poor R Wave Progression ECG Review
• Right Atrial Enlargement (RAE) ECG Review
• Right Axis Deviation (RAD) ECG Review
• Right Ventricular Hypertrophy (RVH) ECG Review

Conduction Abnormalities

• 2:1 Atrioventricular (AV) Block ECG Review
• Bifascicular Block ECG Review
• First-Degree Atrioventricular (AV) Block ECG Review
• Left Anterior Fascicular Block (LAFB) ECG Review
• Left Bundle Branch Block (LBBB) ECG Review
• Left Posterior Fascicular Block (LPFB) ECG Review
• Right Bundle Branch Block (RBBB) ECG Review
• Second-Degree Atrioventricular (AV) Block Type I (Wenkebach) ECG Review
• Second-Degree Atrioventricular (AV) Block Type II ECG Review
• Third-Degree Atrioventricular (AV) Block ECG Review
• Trifascicular Block ECG Review

Ischemic Heart Disease

• Anterior Wall ST Segment Elevation Myocardial Infarction (MI) ECG Review
• Inferior Wall ST Segment Elevation Myocardial Infarction (MI) ECG Review
• Posterior Wall Myocardial Infarction (MI) ECG Review

Miscellaneous

• Arrhythmogenic Right Ventricular Dysplasia (ARVD) ECG Review
• Atrial Septal Defect (ASD) ECG Review
• Brugada Syndrome ECG Review
• Dextrocardia ECG Review
• Digoxin Effect ECG Review
• Early Repolarization ECG Review
• Hypercalcemia ECG Review
• Hyperkalemia ECG Review
• Hypertrophic Obstructive Cardiomyopathy (HOCM) ECG Review
• Hypocalcemia ECG Review
• Hypokalemia ECG Review
• Hypothermia ECG Review
• Limb Lead Reversal ECG Review
• Low Voltage ECG Review
• Lown-Ganong-Levine Syndrome ECG Review
• Left Ventricular (LV) Aneurysm ECG Review
• Neurologic Insult ECG Review
• Pericarditis ECG Review
• Prolonged QT Interval ECG Review
• Pulmonary Embolism ECG Review
• Takotsubo Cardiomyopathy ECG Review
• Wellens’ Syndrome ECG Review
• Wolff-Parkinson-White (WPW) ECG Review

Ventricular Arrhythmias

• Asystole ECG Review
• Idioventricular Rhythms ECG Review
• Junctional Rhythms ECG Review
• Premature Ventricular Contractions (PVCs) ECG Review
• Ventricular Fibrillation ECG Review
• Ventricular Tachycardia (VT) ECG Review