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Questions and Answers
What does the P wave represent in an ECG?
What does the P wave represent in an ECG?
- Contraction of the ventricles
- Elevation of the ST segment
- Relaxation of the ventricles
- Contraction of the atrium (correct)
What is the normal duration range for the QRS wave in an ECG?
What is the normal duration range for the QRS wave in an ECG?
- 0.04 - 0.1 second (correct)
- 1mm elevation
- 0.12 seconds
- 0.047 second
What does the T wave represent in an ECG?
What does the T wave represent in an ECG?
- Relaxation of the ventricles (correct)
- 0.12 seconds PR interval
- Contraction of the atrium
- Elevation of the ST segment
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Study Notes
Electrocardiogram (ECG) Components
- The P wave represents atrial depolarization, which is the electrical activity in the atria, causing them to contract.
- The normal duration range for the QRS wave is 0.08-0.12 seconds, representing ventricular depolarization, which is the electrical activity in the ventricles, causing them to contract.
- The T wave represents ventricular repolarization, which is the recovery phase of the ventricles after contraction.
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