The Certified Rhythm Analysis Technician (CRAT) certification validates your proficiency in cardiac rhythm analysis and dysrhythmia recognition. Cardiac monitoring technicians working in telemetry units, intensive care units, step-down units, and cardiac departments rely on this credential to demonstrate clinical competence to employers and credentialing bodies. Our free CRAT practice test PDF lets you print exam-style ECG interpretation and rhythm analysis questions and work through them at your own pace — on paper, in your car, or anywhere away from a screen.
The CRAT exam demands mastery of the cardiac conduction system, the ability to identify and classify dozens of rhythm types from ECG strip characteristics, and knowledge of emergency response protocols for life-threatening dysrhythmias. The PDF covers every major rhythm category tested, including sinus rhythms, atrial dysrhythmias, junctional rhythms, AV blocks, ventricular dysrhythmias, and pacemaker rhythms — with the same question style you will encounter on the actual certification exam.
The CRAT certification exam tests your ability to identify, classify, and respond to cardiac rhythms across all major dysrhythmia categories.
You must know the electrical pathway of the heart: the sinoatrial (SA) node initiates the impulse, which travels through the atrioventricular (AV) node, the bundle of His, the right and left bundle branches, and finally the Purkinje fibers to depolarize the ventricles. Understanding this pathway explains why disruptions at each level produce distinct ECG changes.
Questions test your ability to identify the P wave (atrial depolarization), PR interval (0.12–0.20 seconds), QRS complex (less than 0.12 seconds), ST segment, and T wave (ventricular repolarization) — and to recognize when any of these deviate from normal values.
Sinus tachycardia (rate greater than 100), sinus bradycardia (rate less than 60), sinus arrhythmia (rate varies with breathing), sinus arrest (complete absence of P wave and QRS), and sinoatrial block are all tested with strip analysis questions.
Premature atrial contractions (PACs), atrial flutter (sawtooth P waves, 2:1 or 4:1 conduction ratio), and atrial fibrillation (absent P waves, irregularly irregular rhythm) — each with distinguishing rate, regularity, and P wave characteristics.
Junctional escape rhythm (rate 40–60, inverted or absent P waves) and accelerated junctional rhythm (rate 60–100) are distinguished by rate and P wave location relative to the QRS complex.
First-degree AV block (prolonged PR interval, all P waves conduct), second-degree type I/Wenckebach (progressively lengthening PR until a QRS is dropped), second-degree type II/Mobitz II (constant PR interval with intermittent non-conducted P waves), and third-degree/complete heart block (complete AV dissociation — P waves and QRS complexes march independently) must be distinguished precisely.
PVCs — including uniform vs. multiform, couplets, bigeminy, and trigeminy — along with idioventricular rhythm, ventricular tachycardia (rate greater than 100, wide QRS), and ventricular fibrillation (chaotic, no organized complexes) require rapid identification for emergency response questions.
Pacemaker spike identification, atrial vs. ventricular vs. dual-chamber pacing, failure to capture (spike present but no P/QRS follows), failure to sense (pacemaker fires when it should inhibit), and failure to pace (no spike when patient rate drops below set rate) are all high-yield CRAT topics.
Want immediate feedback on your rhythm interpretation skills? Our interactive CRAT practice test platform delivers instant answer explanations after every question, tracks your accuracy by dysrhythmia category, and lets you focus your remaining study time on the rhythm types where you make the most mistakes. Use the online tests alongside this PDF for a complete CRAT exam preparation strategy.