CAMC EKG Exam Questions and Correct Answers|
2026 Updated
If you have a regular rhythm how do you find heart rate
1500 divided by # of small blocks in the RR interval.
If the heart rate is regular how do you do the R-Rsec
# small blocks from R-R interval x 0.04 and then hit square root button
If you have an irregular rhythm how do you find the heart rate
Count number of QRSs and add 0 = ___ bpm
How do you find PRI
Count # if small blocks from start of P to start of QRS x 0.04
How do you find QRS
,Count # of small blocks from start of QRS to end of QRS x 0.04
How do you find QT
Count # of small blocks from start of QRS to where the T wave returns to
isoelectric line x 0.04
How do you find QTc
QT divided by square root of R-Rsecs
Escape
A higher pacemaker site does not create an impulse so a lower pacemaker site
takes over.
Irritability
This is a cause of premature beats
Pacemaker rule
The pacemaker site firing the fastest controls the heart rate
, Inherent rate
Natural rate of a pacemaker
Automaticity
The ability of the heart to initiate an impulse without outside stimulation
What represents polarization ?
Isoelectric line
What represents atrial depolarization
P wave
What represents the delay in the Av node
Pr segment
What represents ventricular depolarization
QRS complex
2026 Updated
If you have a regular rhythm how do you find heart rate
1500 divided by # of small blocks in the RR interval.
If the heart rate is regular how do you do the R-Rsec
# small blocks from R-R interval x 0.04 and then hit square root button
If you have an irregular rhythm how do you find the heart rate
Count number of QRSs and add 0 = ___ bpm
How do you find PRI
Count # if small blocks from start of P to start of QRS x 0.04
How do you find QRS
,Count # of small blocks from start of QRS to end of QRS x 0.04
How do you find QT
Count # of small blocks from start of QRS to where the T wave returns to
isoelectric line x 0.04
How do you find QTc
QT divided by square root of R-Rsecs
Escape
A higher pacemaker site does not create an impulse so a lower pacemaker site
takes over.
Irritability
This is a cause of premature beats
Pacemaker rule
The pacemaker site firing the fastest controls the heart rate
, Inherent rate
Natural rate of a pacemaker
Automaticity
The ability of the heart to initiate an impulse without outside stimulation
What represents polarization ?
Isoelectric line
What represents atrial depolarization
P wave
What represents the delay in the Av node
Pr segment
What represents ventricular depolarization
QRS complex
