Hoag ECG Exam Questions with Correct
Answers
If the SA node is damaged or impaired, the AV node will initiate an electrical impulse at
a rate of...
40-60 bpm
If the AV node is damaged or impaired, the purkinje fibers will initiate an electrical
impulse at a rate of ...
20-40 bpm
Normal QRS interval
0.04 - 0.12 seconds
Normal PR interval (measured from beginning of P wave to beginning of QRS complex)
0.12-0.20 seconds
Normal QT interval (measured from beginning of QRS complex to end of T wave)
0.33-0.44 seconds (but adjusted for heart rate)
One small box on a 6 second strip is equal to
0.04 seconds
One large box on a 6 second strip is equal to
0.20 seconds
Six second tracing
30 five mm boxes
Answers
If the SA node is damaged or impaired, the AV node will initiate an electrical impulse at
a rate of...
40-60 bpm
If the AV node is damaged or impaired, the purkinje fibers will initiate an electrical
impulse at a rate of ...
20-40 bpm
Normal QRS interval
0.04 - 0.12 seconds
Normal PR interval (measured from beginning of P wave to beginning of QRS complex)
0.12-0.20 seconds
Normal QT interval (measured from beginning of QRS complex to end of T wave)
0.33-0.44 seconds (but adjusted for heart rate)
One small box on a 6 second strip is equal to
0.04 seconds
One large box on a 6 second strip is equal to
0.20 seconds
Six second tracing
30 five mm boxes
