EKG competency Exam Rated A+
What is another term for the SA node - Answer- Natural pacemaker
What is another name for the AV node - Answer- Gatekeeper
SA Node will generate how many impulses? - Answer- 60-100 BPM
Is SA node fails to generate impulse, what hapens? - Answer- AV node takes over - 40
to 60 BMP
If the AV node and/or bundle of his fails to generate impulse, what happens? - Answer-
Purkinje fibers take over- 20-40 BPM
What does the P wave represent? - Answer- Atrial depolarization (atria contract)
What does the QRS complex represent? - Answer- Ventricular depolarization (ventricles
contract)
What does the T-wave represent? - Answer- Ventricular repolarization
Where does the atrial repolarize? - Answer- During QRS
How many seconds is in 1 small box represent on an EKG paper? - Answer- 0.04
seconds
How many seconds is in 1 big box represent on an EKG paper? - Answer- 0.20 seconds
Show me the P-wave. How do you know it is normal? - Answer- Normal is upright +
rounded, one before QRS
measure the PRI. What is the normal PRI? - Answer- 0.12 to 0.20 seconds (3-5 small
boxes)
Measure the QRS complex. What is the normal QRS complex - Answer- 0.06 to 0.12
seconds (1.5 to 3 small boxes)
How do you determine the heart rate? - Answer- Large box method (300 / large boxes
between R waves)
Placement for V1 - Answer- Fourth intercostal space at right margin of sternum
Placement of V2 - Answer- Fourth infercostal space at left margin of sternum
Position of V3 - Answer- Midway between V2 and V4
What is another term for the SA node - Answer- Natural pacemaker
What is another name for the AV node - Answer- Gatekeeper
SA Node will generate how many impulses? - Answer- 60-100 BPM
Is SA node fails to generate impulse, what hapens? - Answer- AV node takes over - 40
to 60 BMP
If the AV node and/or bundle of his fails to generate impulse, what happens? - Answer-
Purkinje fibers take over- 20-40 BPM
What does the P wave represent? - Answer- Atrial depolarization (atria contract)
What does the QRS complex represent? - Answer- Ventricular depolarization (ventricles
contract)
What does the T-wave represent? - Answer- Ventricular repolarization
Where does the atrial repolarize? - Answer- During QRS
How many seconds is in 1 small box represent on an EKG paper? - Answer- 0.04
seconds
How many seconds is in 1 big box represent on an EKG paper? - Answer- 0.20 seconds
Show me the P-wave. How do you know it is normal? - Answer- Normal is upright +
rounded, one before QRS
measure the PRI. What is the normal PRI? - Answer- 0.12 to 0.20 seconds (3-5 small
boxes)
Measure the QRS complex. What is the normal QRS complex - Answer- 0.06 to 0.12
seconds (1.5 to 3 small boxes)
How do you determine the heart rate? - Answer- Large box method (300 / large boxes
between R waves)
Placement for V1 - Answer- Fourth intercostal space at right margin of sternum
Placement of V2 - Answer- Fourth infercostal space at left margin of sternum
Position of V3 - Answer- Midway between V2 and V4
