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