FREE ECG Technician Certification Exam Question and Answers Flashcards
6 cards from real EKG certification Certification practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 FREE ECG Technician Certification Exam Question and Answers flashcards as text
A rhythm strip shows irregularly irregular R-R intervals with no discernible P waves. What is the most likely rhythm?
Answer: Atrial fibrillation
Irregularly irregular rhythm with absent P waves is the hallmark of atrial fibrillation.
What is the standard paper speed used for ECG recording in the United States?
Answer: 25 mm/sec
The standard ECG paper speed in the US is 25 mm per second, making each small box represent 0.04 seconds.
Which electrolyte imbalance is most commonly associated with tall, peaked T waves on an ECG?
Answer: Hyperkalemia
Hyperkalemia classically produces tall, narrow, peaked T waves as one of its earliest ECG manifestations.
An ECG technician accidentally reverses the right arm and left arm electrodes. Which leads will display inverted waveforms?
Answer: Lead I will be inverted
Reversing the right and left arm electrodes causes lead I to display as an inverted mirror image of the correct tracing.
What is the normal QT interval range for a heart rate of 60-100 bpm?
Answer: 0.36 to 0.44 seconds
The corrected QT interval normally ranges from 0.36 to 0.44 seconds at typical heart rates.
Which of the following is the proper action if an ECG baseline wander is observed during recording?
Answer: Check that electrodes have proper skin contact and gel
Baseline wander is most commonly caused by poor electrode contact, so checking skin preparation and electrode adhesion is the correct first step.