3 Questions
What does the P wave represent in an ECG?
Contraction of the atrium
What is the normal duration range for the QRS wave in an ECG?
0.04 - 0.1 second
What does the T wave represent in an ECG?
Relaxation of the ventricles
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.
Test your knowledge about the different waves and intervals in an electrocardiogram (ECG) and their corresponding cardiac events. Learn about P wave, QRS wave, T wave, PR interval, and ST segment.
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