MAYO ECG - Questions With Complete Solutions
PR interval represents: Correct Ans - electrical conduction
time from the atria to the AV node
Is atrial flutter benign? Correct Ans - no
PR interval Correct Ans - .12-.20
QRS interval Correct Ans - <.12
What lead do you look at Correct Ans - V1
Interventions Correct Ans - assess the patient
QRS wave Correct Ans - ventricular depolarization
P wave Correct Ans - atrial depolarization
AV node purpose Correct Ans - delays impulse from atria
before it moves to the ventricles
Where do you place the lead? Correct Ans - right sternal
border, 4th intercostal space L!
Rhythm with only p waves Correct Ans - Ventricular standstill
SA node Correct Ans - the node consisting of specialized cells
capable of automaticity at a rate of 60-100
Sinus Tachycardia Correct Ans - a rhythm characterized by
100-160 beats per minute
, Automaticity Correct Ans - the ability of the cell to
spontaneously initiate an impulse
Normal SR Correct Ans - Impulse that initiates within the SA
node at a rate of 60-100 bpm
Escape Rhythm or beat Correct Ans - when the sinus node fails
and a lower pacemaker takes over
Sinus Pause or Arrest Correct Ans - the sinus node fails to
generate an impulse for one or more beats
rate 40-60
p wave inverted, occurs before, during, or after qrs
PR less than 0.12 Correct Ans - junctional escape rhythm
rate 60-100
p wave inverted, occurs before, during, or after qrs
PR less than 0.12 Correct Ans - accelerated junctional rhythm
rate 100-159
p wave inverted, occurs before, during, or after qrs
PR less than 0.12 Correct Ans - junctional tachycardia
primary pacemaker of the heart Correct Ans - SA node
carry the impulse to allow for ventricular filling Correct Ans -
intra atrial pathways
Delays impulse to allow for ventricular filling Correct Ans - AV
node
Connects av node to bundle branches Correct Ans - Bundle of
HIS
PR interval represents: Correct Ans - electrical conduction
time from the atria to the AV node
Is atrial flutter benign? Correct Ans - no
PR interval Correct Ans - .12-.20
QRS interval Correct Ans - <.12
What lead do you look at Correct Ans - V1
Interventions Correct Ans - assess the patient
QRS wave Correct Ans - ventricular depolarization
P wave Correct Ans - atrial depolarization
AV node purpose Correct Ans - delays impulse from atria
before it moves to the ventricles
Where do you place the lead? Correct Ans - right sternal
border, 4th intercostal space L!
Rhythm with only p waves Correct Ans - Ventricular standstill
SA node Correct Ans - the node consisting of specialized cells
capable of automaticity at a rate of 60-100
Sinus Tachycardia Correct Ans - a rhythm characterized by
100-160 beats per minute
, Automaticity Correct Ans - the ability of the cell to
spontaneously initiate an impulse
Normal SR Correct Ans - Impulse that initiates within the SA
node at a rate of 60-100 bpm
Escape Rhythm or beat Correct Ans - when the sinus node fails
and a lower pacemaker takes over
Sinus Pause or Arrest Correct Ans - the sinus node fails to
generate an impulse for one or more beats
rate 40-60
p wave inverted, occurs before, during, or after qrs
PR less than 0.12 Correct Ans - junctional escape rhythm
rate 60-100
p wave inverted, occurs before, during, or after qrs
PR less than 0.12 Correct Ans - accelerated junctional rhythm
rate 100-159
p wave inverted, occurs before, during, or after qrs
PR less than 0.12 Correct Ans - junctional tachycardia
primary pacemaker of the heart Correct Ans - SA node
carry the impulse to allow for ventricular filling Correct Ans -
intra atrial pathways
Delays impulse to allow for ventricular filling Correct Ans - AV
node
Connects av node to bundle branches Correct Ans - Bundle of
HIS
