10 free, exam-style Certified Rhythm Analysis Technician (CRAT) practice questions with answers and explanations. No signup required. Work through them below, then take the full free CRAT practice test to study every exam domain.
A telemetry tracing shows a regular ventricular rhythm at 150 bpm with narrow QRS complexes. The baseline between complexes has a sawtooth appearance, and the underlying atrial rate is approximately 300 bpm. This rhythm is MOST consistent with:
Correct answer: A - Atrial flutter with 2:1 conduction
Two second-degree AV blocks can look similar at a glance, but the distinction changes how urgently the patient is treated. Which finding identifies Mobitz II rather than Mobitz I (Wenckebach)?
Correct answer: B - The PR interval stays constant, then a P wave suddenly fails to conduct
A monitor technician observes a premature beat that is wide and bizarre, has no P wave in front of it, and is followed by a full compensatory pause. This beat is a:
Correct answer: B - Premature ventricular contraction (PVC)
A patient on telemetry suddenly shows a chaotic, irregular waveform with no identifiable P waves, QRS complexes, or T waves. The patient is unresponsive and pulseless. The technician recognizes this rhythm calls for which immediate intervention?
Correct answer: A - Defibrillation
A paced rhythm strip shows pacing spikes occurring at regular intervals, but several of the spikes are NOT followed by a QRS complex. This finding indicates which pacemaker malfunction?
Correct answer: C - Failure to capture the myocardium
The electrical impulse that normally begins each heartbeat is held up briefly before it reaches the ventricles, giving them time to fill with blood. Which structure is responsible for this delay?
Correct answer: D - The atrioventricular (AV) node
On a standard ECG running at 25 mm/s, a technician counts exactly four large boxes between two consecutive R waves in a regular rhythm. Using the 300 method, the heart rate is approximately:
Correct answer: B - 75 bpm
A telemetry alarm signals possible ventricular fibrillation. On the strip the baseline is fuzzy and erratic, yet normal QRS complexes can still be seen marching through the noise at a steady rate. The patient is sitting up brushing their teeth. The technician should FIRST:
Correct answer: A - Recognize the tracing as artifact and assess the patient
A technician approaches a patient to apply a continuous monitoring device. According to standard patient-identification practice, the technician should confirm the patient's identity using:
Correct answer: C - Two identifiers, such as the patient's full name and date of birth
While watching several patients on a central monitoring station, a technician sees all of the following at the same moment. Which finding requires the MOST immediate notification of the care team?
Correct answer: D - A patient whose rhythm just became sustained ventricular tachycardia
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