Hoag ECG questions and answers 2026\2027 A+ Grade
If the SA node is damaged or impaired, the AV node will initiate an electrical impulse at a rate of...
- correct answer 40-60 bpm
If the AV node is damaged or impaired, the purkinje fibers will initiate an electrical impulse at a rate of ...
- correct answer 20-40 bpm
Normal QRS interval
- correct answer 0.04 - 0.12 seconds
Normal PR interval (measured from beginning of P wave to beginning of QRS complex)
- correct answer 0.12-0.20 seconds
Normal QT interval (measured from beginning of QRS complex to end of T wave)
- correct answer 0.33-0.44 seconds (but adjusted for heart rate)
One small box on a 6 second strip is equal to
- correct answer 0.04 seconds
One large box on a 6 second strip is equal to
- correct answer 0.20 seconds
Six second tracing
- correct answer 30 five mm boxes
If the SA node is damaged or impaired, the AV node will initiate an electrical impulse at a rate of...
- correct answer 40-60 bpm
If the AV node is damaged or impaired, the purkinje fibers will initiate an electrical impulse at a rate of ...
- correct answer 20-40 bpm
Normal QRS interval
- correct answer 0.04 - 0.12 seconds
Normal PR interval (measured from beginning of P wave to beginning of QRS complex)
- correct answer 0.12-0.20 seconds
Normal QT interval (measured from beginning of QRS complex to end of T wave)
- correct answer 0.33-0.44 seconds (but adjusted for heart rate)
One small box on a 6 second strip is equal to
- correct answer 0.04 seconds
One large box on a 6 second strip is equal to
- correct answer 0.20 seconds
Six second tracing
- correct answer 30 five mm boxes
