EKG Certification Exam with 100% Correct Answers 2023

EKG Certification Exam with 100% Correct Answers 2023 What does the P wave represent? - Correct Answer-atrial contraction Define: Repolarization - Correct Answer-when the heart recovers electronically Define: Depolarization - Correct Answer-contraction of cardiac cells What does the QRS wave represent? - Correct Answer-ventricular contraction What does the T wave represent? - Correct Answer-ventricular relaxation Which wave only occurs occasionally in some patients? - Correct Answer-the U wave What does the vertical line on the EKG represent? - Correct Answer-voltage What does the horizontal line on the EKG represent? - Correct Answer-time What is a baseline? - Correct Answer-the flat line that separates the various waves What is one box equal to? - Correct Answer-.04 sec What are 5 large squares equal to? - Correct Answer-.2 sec What does BPM stand for? - Correct Answer-beats per minute What is electrolyte? - Correct Answer-substance used to conduct current better What forms does electrolyte come in? - Correct Answer-gels, lotions, pastes, adhesive pads Why is electrolyte necessary? - Correct Answer-because the skin is a poor conductor of electricity What are electrodes? - Correct Answer-sensors that detect electrical impulses on the body surface What are electrodes made of? - Correct Answer-metal or other conductive material What are lead wires? - Correct Answer-the wires that connect the sensors to the machine How can older electrocardiograph machines be adapted or converted to operate with the current self-adhesive electrodes? - Correct Answer-order a set of alligator clips from the manufacturer How many sensors are on a standard EKG? - Correct Answer-10 How many leads do the sensors record? - Correct Answer-12 What are the sensors recording? - Correct Answer-the electrical activity of the heart What are the four limb leads? - Correct Answer-right arm, left arm, right leg, left leg Which limb lead is called the "ground" or "reference electrode"? - Correct Answer-right leg Where on the limbs are the sensors placed? - Correct Answer-fleshy, non-muscular portion of upper arms and lower legs Lead I records the electrical activity between the... - Correct Answer-right arm and left arm Lead II records the electrical activity between the... - Correct Answer-right arm and left leg Lead III records electrical activity between the... - Correct Answer-left arm and left leg Which lead portrays the heartbeat better than other leads and what is it referred to as? - Correct Answer-lead II and called rhythm strip The first 3 leads are also know as what type of lead? - Correct Answer-bipolar Leads IV, V, VI are designated as what leads? - Correct Answer-aVr, aVl, aVf These augmented leads are also known as what? - Correct Answer-unipolar Lead aVr records activity from? - Correct Answer-right arm, right leg Lead aVl records activity from? - Correct Answer-left arm, left leg Lead aVf records activity from? - Correct Answer-foot