Textbook
Normal tracing
Technical Problems
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
- Cardiac Memory*
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
- not part of the ACC list