Free Online ECG Book

01

Basic Anatomy and Electrophysiology of the Heart

• Coronary Circulation
• Electrical Conduction System of the Heart
• Action Potential
• Electrical Vector of the Heart
• Heart and ECG
• Laddergram
• Electrophysiology Study
• Upload ECG for interpretation

03

Electrical Axis of the Heart and Transition Zone

• Electrical Axis of the Heart
• Determining the Electrical Axis of the Heart
• Right Axis Deviation
• Left Axis Deviation
• Extreme Axis Deviation
• Transition Zone
• Dextrocardia

05

Basic Cardiac Rhythms

• Sinus Rhythm
• Sinus Tachycardia
• Inappropriate Sinus Tachycardia
• Sinus Bradycardia
• Respiratory Sinus Arrhythmia
• Multifocal Atrial Arrhythmia
• Junctional Rhythm
• Junctional Bradycardia
• Accelerated Junctional Rhythm
• Junctional Tachycardia
• Ventricular Rhythm
• Accelerated Ventricular Rhythm

07

Sinoatrial and Atrial Blocks

• First Degree SA Block
• Second Degree SA Block - Type I (Wenckebach)
• Second Degree SA Block - Type II
• Third Degree SA Block
• Sinus Arrest
• Asystole
• Interatrial Block

09

Bundle Branch and Fascicular Blocks

• Right Bundle Branch Block
• Left Bundle Branch Block
• Left Anterior Fascicular Block
• Left Posterior Fascicular Block
• Bifascicular Block
• Trifascicular Block

11

Cardiomyopathies

• Dilated Cardiomyopathy
• Hypertrophic Cardiomyopathy
• Restrictive Cardiomyopathy
• Takotsubo Cardiomyopathy
• Arrhythmogenic Right Ventricular Dysplasia

13

Minerals and Medications

• Hyperkalaemia
• Hypokalaemia
• Hypercalcemia
• Hypocalcemia
• Hypermagnesemia and Hypomagnesemia
• Digoxin
• Digoxin Toxicity
• Tricyclic Antidepressants (Intoxication)
• Beta-Blockers (Intoxication)
• Calcium Channel Blockers (Intoxication)

15

Myocardial Infarction and Acute Coronary Syndrome

• Atrial Myocardial Infarction
• ST Segment and Ischemia
• T Wave and Ischemia
• Acute Coronary Syndrome
• STEMI Infarction
• NSTEMI and Unstable Angina
• Q Wave and Myocardial Infarction
• Anterior STEMI (Localization of LAD Occlusion)
• Aneurysm of the Left Ventricle
• Myocardial Infarction and aVR (Forgotten Lead)
• De Winter T Waves
• Wellens Syndrome
• Lateral STEMI Infarction
• Inferior STEMI Infarction
• Right Ventricular STEMI Infarction
• Posterior STEMI Infarction
• STEMI Infarction and LBBB
• STEMI and Ventricular Pacing
• Arrhythmias in Acute Myocardial Infarction

17

Supraventricular Tachycardias

• Supraventricular Tachycardia (SVT)
• Differential Diagnosis of SVT
• Atrial Fibrillation
• Atrial Flutter
• Focal Atrial Tachycardia
• Multifocal Atrial Tachycardia
• AV Nodal Re-entry Tachycardia (AVNRT)
• Atrioventricular Re-entry Tachycardia (AVRT)
• Permanent Junctional Reciprocating Tachycardia (PJRT)
• Sinoatrial Nodal Reentry Tachycardia
• Intra-Atrial Reentry Tachycardia

19

Wide Complex Tachycardia

• Wide Complex Tachycardia
• Brugada Algorithm (VT vs. Aberrant SVT)
• Brugada-Stuerer Algorithm (VT vs. Pre-Excited SVT)
• aVR Algorithm (Vereckei)
• R Wave Peak Time in Lead II (Pavas Criteria)
• Griffith Algorithm

21

Electrophysiological Phenomena

• Aberrant Conduction
• Phase 3 Block (Tachycardia-Dependent Block)
• Ashman Phenomenon
• Aberrant Retrograde Bundle Branch Block
• Phase 4 Block (Bradycardia-Dependent Block)
• Concealed Conduction
• Fusion Beat
• Overdrive Suppression
• R-on-T Phenomenon
• AV Dissociation
• Electrical Alternans
• Parasystole
• Memory T Waves
• Hyperventilation-induced T Wave Inversion
• Persistent juvenile T-wave pattern
• Interventricular Conduction Delay