Textbook

Table of Contents

category	item
Normal tracing
	Normal ECG
Technical Problems
	Leads misplaced
	Artifacts
Sinus node rhythms and arrhythmias
	Sinus rhythm
	Sinus tachycardia (>100 beats per minute)
	Sinus bradycardia (<50 beats per minute)
	Sinus arrest or pause
	Sino-atrial exit block
Other Supraventricular Rhythms
	Atrial premature complexes
	Atrial premature complexes, nonconducted
	Ectopic atrial rhythm
	Atrial fibrillation
	Atrial flutter
	Junctional premature complexes
	Supraventricular tachycardia, paroxysmal
Ventricular Arrhythmias
	Ventricular premature complexes
	Ventricular escape complexes or rhythm
	Accelerated idioventricular rhythm
	Ventricular tachycardia
	Ventricular tachycardia, polymorphous (including torsade de pointes)
	Ventricular fibrillation
Genetic Arrhythmias
	Long QT syndrome
	Brugada syndrome
	Arrythmogenic Right Ventricular Cardiomyopathy
	Catecholamin Induced Ventricular Tachycardia
Atrial Ventricular Conduction
	First-degree AV block
	Mobitz Type 1 second-degree AV block (Wenckebach)
	Mobitz Type 2 second-degree AV block
	AV block or conduction ratio, 2:1
	AV block, varying conduction ratio
	AV block, advanced (high-grade)
	AV block, complete (third-degree)
	AV dissociation
Intraventricular Conduction
	Left bundle branch block (fixed or intermittent)
	Right bundle branch block (fixed or intermittent, complete or incomplete)
	Intraventricular conduction delay, nonspecific
	Aberrant conduction of supraventricular beats
	Left anterior fascicular block
	Left posterior fascicular block
	Ventricular pre-excitation (Wolff-Parkinson-White pattern)
QRS axis and voltage
	Right axis deviation (+90 to +180 degrees)
	Left axis deviation (-30 to -90 degrees)
	Indeterminate axis
	Electrical alternans
	Low voltage (less than 0.5 mV total QRS amplitude in each extremity lead and less than 1.0 mV in each Precordial lead)
Chamber Hypertrophy and Enlargment
	Left atrial enlargement, abnormality, or conduction defect
	Right atrial abnormality
	Left ventricular hypertrophy (QRS abnormality only)
	Left ventricular hypertrophy with secondary ST-T abnormality
	Right ventricular hypertrophy with or without secondary ST-T abnormality
Repolarization (ST-T,U) Abnormalities
	Early repolarization (normal variant)
	Juvenile T waves (normal variant)
	Nonspecific abnormality, ST segment and/or T wave
	ST and/or T wave suggests ischemia
	ST suggests injury
	ST suggests ventricular aneurysm
	Q-T interval prolonged
	Prominent U waves
Myocardial Infarction
	Inferior MI (acute or recent)
	Inferior MI (old or age indeterminate)
	Posterior MI (acute or recent)
	Posterior MI (old or age indeterminate)
	Septal MI (acute or recent)
	Anterior MI (acute or recent)
	Anterior MI (old or age indeterminate)
	Lateral MI (acute or recent)
	Lateral MI (old or age indeterminate)
	Right ventricular infarction (acute)
	Lateral MI (acute or recent)
Clinical Disorders
	Chronic pulmonary disease pattern
	Acute pericarditis
	Suggests hypokalemia
	Suggests hyperkalemia
	Suggests hypocalcemia
	Suggests hypercalcemia
	Suggests CNS disease
Pacemaker
	Atrial-paced rhythm
	Ventricular-paced rhythm
	Atrial-sensed ventricular-paced rhythm
	AV dual-paced rhythm
	Failure of appropriate capture, atrial
	Failure of appropriate capture, ventricular
	Failure of appropriate inhibition, atrial
	Failure of appropriate inhibition, ventricular
	Failure of appropriate pacemaker firing
	Retrograde atrial activation
	Pacemaker mediated tachycardia