MAYO ECG Exam Tested Questions &
Revised Correct Answers < UPDATED &
ALREADY PASSED || NEWEST VERSION
2026
PR interval represents: -CORRECTANSWER electrical conduction time from the atria to
the AV node
Is atrial flutter benign? -CORRECTANSWER no
PR interval -CORRECTANSWER .12-.20
QRS interval -CORRECTANSWER <.12
What lead do you look at -CORRECTANSWER V1
Interventions -CORRECTANSWER assess the patient
QRS wave -CORRECTANSWER ventricular depolarization
P wave -CORRECTANSWER atrial depolarization
, AV node purpose -CORRECTANSWER delays impulse from atria before it moves to
the ventricles
Where do you place the lead? -CORRECTANSWER right sternal border, 4th intercostal
space L!
Rhythm with only p waves -CORRECTANSWER Ventricular standstill
SA node -CORRECTANSWER the node consisting of specialized cells capable of
automaticity at a rate of 60-100
Sinus Tachycardia -CORRECTANSWER a rhythm characterized by 100-160 beats per
minute
Automaticity -CORRECTANSWER the ability of the cell to spontaneously initiate an
impulse
Normal SR -CORRECTANSWER Impulse that initiates within the SA node at a rate of
60-100 bpm
Escape Rhythm or beat -CORRECTANSWER when the sinus node fails and a lower
pacemaker takes over
Revised Correct Answers < UPDATED &
ALREADY PASSED || NEWEST VERSION
2026
PR interval represents: -CORRECTANSWER electrical conduction time from the atria to
the AV node
Is atrial flutter benign? -CORRECTANSWER no
PR interval -CORRECTANSWER .12-.20
QRS interval -CORRECTANSWER <.12
What lead do you look at -CORRECTANSWER V1
Interventions -CORRECTANSWER assess the patient
QRS wave -CORRECTANSWER ventricular depolarization
P wave -CORRECTANSWER atrial depolarization
, AV node purpose -CORRECTANSWER delays impulse from atria before it moves to
the ventricles
Where do you place the lead? -CORRECTANSWER right sternal border, 4th intercostal
space L!
Rhythm with only p waves -CORRECTANSWER Ventricular standstill
SA node -CORRECTANSWER the node consisting of specialized cells capable of
automaticity at a rate of 60-100
Sinus Tachycardia -CORRECTANSWER a rhythm characterized by 100-160 beats per
minute
Automaticity -CORRECTANSWER the ability of the cell to spontaneously initiate an
impulse
Normal SR -CORRECTANSWER Impulse that initiates within the SA node at a rate of
60-100 bpm
Escape Rhythm or beat -CORRECTANSWER when the sinus node fails and a lower
pacemaker takes over
