Search above to quickly find what you are looking for or find ECG criteria & findings organized alphabetically by diagnosis below:

Accelerated Idioventricular Rhythm (AIVR)

Accelerated Junctional Rhythm

Accelerated Ventricular Escape Rhythm

Acute Coronary Syndromes

Acute Pericarditis vs. STEMI

Altered Mental Status Emergencies

Appropriate Discordance

Arrhythmogenic Right Ventricular Cardiomyopathy or Dysplasia (ARVC/ARVD)


Artifact vs. STEMI

Ashman Phenomenon

Atrial Fibrillation (Afib)

Atrial Fibrillation with RVR

Atrial Fibrillation with WPW

Atrial Flutter

Atrial Flutter with 1:1 Conduction

Atrial Flutter with 2:1 Conduction

Atrial flutter with Variable Conduction

Atrial septal defects (ASD) & Crochetage Pattern

Atrial Tachycardia

Atrioventricular Blocks (AVB)

AVB: 1st degree

AVB: 2nd degree, "High grade AV block"

AVB: 2nd degree, 2:1 Conduction

AVB: 2nd degree, Mobitz I (Wenckebach)

AVB: 2nd degree, Mobitz II (Hay)

AVB: 3rd degree, Complete Heart Block

aVR: Left Main or Proximal LAD Occlusion & Multivessel Disease

AVRT (AV nodal reentry tachycardia)

Axis Basics

Barcelona Criteria

BBBs and Paced Rhythms vs. STEMI

Bidirectional Ventricular Tachycardia

Bifascicular Block

Blocked Premature Atrial Complexes (PACs)

Bifascicular Block

Bradycardia-Tachycardia Syndrome

BRASH syndrome

Brugada Syndrome

Bundle Branch Blocks

Catecholaminergic Polymorphic VT (CPVT)

Cerebral T waves

Classic STEMI Criteria

de Winter T waves

Delta waves


Digoxin Toxicity

Dysrhythmias in patients with LVADs

Earliest ECG evidence of Occlusion MI

Early Reciprocal Changes

Early Repolarization

Early Repolarization vs. STEMI

ECG evidence of reperfusion after MI

Ectopic Atrial Rhythm

Electrical Alternans

Electrical Storm

Epsilon waves

Extreme Axis Deviation

Persistent Juvenile T wave Pattern

Polymorphic Ventricular Tachycardia

Poor R wave Progression

Post-Thrombolytic Reperfusion

Posterior STEMI Criteria

Preexcitation Syndromes

Premature Atrial Complexes (PACs)

Premature Complexes (PACs, PJCs, PVCs)

Premature Junctional Complexes (PJCs)

Premature Ventricular Complexes (PVCs)

Pseudo-Wellens Waves

Pseudonormalization of T waves

Pulmonary Embolism

QRS Axis, Voltage, & Morphology

QRS Complex Duration

QRS Fragmentation

Regular Rhythms

Regularly Irregular Rhythms

Right Atrial Enlargement (RAE)

Right Axis Deviation

RIght Bundle Branch Block

Right Ventricular STEMI Criteria

Right Ventricular Hypertrophy (RVH)

RV Outflow Tract Tachycardia (RVOT)

Severe Hypothermia

Short QT Syndrome

Sinoatrial Exit Block

Sinus Arrest

Sinus Arrhythmia

Sinus Bradycardia

Sinus Node Dysfunction (Sick Sinus Syndrome)

Sinus Tachycardia

Slow Atrial Fibrillation

Slow Ventricular Tachycardia

Sodium Channel Blocker Toxicity

STEMI Mimics

Subtle ST Elevation

Supraventricular Tachycardia (SVT)

T wave Alternans

Takotsubo Cardiomyopathy

Takotsubo Cardiomyopathy vs. STEMI

Terminal QRS Distortion

Torsades de Pointes

Toxicologic Emergencies

Trifascicular Block

Unstable Bradydysrhythmias

Unstable Tachydysrhythmias

Upright T wave in V1: OMI Pattern

Ventricular Escape Rhythms

Ventricular Fibrillation

Ventricular Flutter

Ventricular Rhythms

Ventricular Tachycardia (VT)

VT Mimics

VT vs. SVT with Aberrancy

Wellens Syndrome

Wide QRS Bradydysrhythmia

Wolff Parkinson White Syndrome (WPW)


WPW with Antidromic SVT

WPW with Orthodromic SVT