EKG Certification Exam Questions
with Verified Answers
What does the P wave represent? - ANSWERSatrial contraction
Define: Repolarization - ANSWERSwhen the heart recovers electronically
Define: Depolarization - ANSWERScontraction of cardiac cells
What does the QRS wave represent? - ANSWERSventricular contraction
What does the T wave represent? - ANSWERSventricular relaxation
Which wave only occurs occasionally in some patients? - ANSWERSthe U wave
What does the vertical line on the EKG represent? - ANSWERSvoltage
What does the horizontal line on the EKG represent? - ANSWERStime
What is a baseline? - ANSWERSthe flat line that separates the various waves
What is one box equal to? - ANSWERS.04 sec
What are 5 large squares equal to? - ANSWERS.2 sec
What does BPM stand for? - ANSWERSbeats per minute
What is electrolyte? - ANSWERSsubstance used to conduct current better
What forms does electrolyte come in? - ANSWERSgels, lotions, pastes, adhesive pads
Why is electrolyte necessary? - ANSWERSbecause the skin is a poor conductor of
electricity
What are electrodes? - ANSWERSsensors that detect electrical impulses on the body
surface
What are electrodes made of? - ANSWERSmetal or other conductive material
What are lead wires? - ANSWERSthe wires that connect the sensors to the machine
with Verified Answers
What does the P wave represent? - ANSWERSatrial contraction
Define: Repolarization - ANSWERSwhen the heart recovers electronically
Define: Depolarization - ANSWERScontraction of cardiac cells
What does the QRS wave represent? - ANSWERSventricular contraction
What does the T wave represent? - ANSWERSventricular relaxation
Which wave only occurs occasionally in some patients? - ANSWERSthe U wave
What does the vertical line on the EKG represent? - ANSWERSvoltage
What does the horizontal line on the EKG represent? - ANSWERStime
What is a baseline? - ANSWERSthe flat line that separates the various waves
What is one box equal to? - ANSWERS.04 sec
What are 5 large squares equal to? - ANSWERS.2 sec
What does BPM stand for? - ANSWERSbeats per minute
What is electrolyte? - ANSWERSsubstance used to conduct current better
What forms does electrolyte come in? - ANSWERSgels, lotions, pastes, adhesive pads
Why is electrolyte necessary? - ANSWERSbecause the skin is a poor conductor of
electricity
What are electrodes? - ANSWERSsensors that detect electrical impulses on the body
surface
What are electrodes made of? - ANSWERSmetal or other conductive material
What are lead wires? - ANSWERSthe wires that connect the sensors to the machine
