12-Lead ECG (2nd Edition) Edit editionThis problem has been solved:Solutions for Chapter 10
Looking for the textbook?- CH1
- CH2
- CH3
- CH4
- CH6
- CH7
- CH8
- CH9
- CH10
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- CH12
- CH13
- CH14
- CH15
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- 1CR
- 1QR1
- 1QR2
- 1QR3
- 1QR4
- 1QR5
- 2CR
- 2QR1
- 2QR2
- 2QR3
- 2QR4
- 2QR5
- 3CR
- 3QR1
- 3QR2
- 3QR3
- 3QR4
- 3QR5
- 4CR
- 4QR1
- 4QR2
- 4QR4
- 5CR
- 5QR1
- 5QR2
- 5QR4
- 6CR
- 6QR2
- 7CR
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- 10CR
Electrocardiogram (ECG) comprises of three components – P waves, QRS complexes and T waves. The interval between P wave and QRS complex is termed as P-R interval and the interval between QRS complex and T wave is termed as ST interval (segment).
Each component indicates different activity of the heart. P waves indicate atrial depolarization, QRS complex represents ventricular depolarization and the T wave represents ventricular repolarization. Atrial repolarization is not visible as any waveform of ECG as it gets masked in the stronger QRS complex of ventricular depolarization.
On ECG, PR interval starts from the beginning of the P wave and ends at the beginning of the QRS complex. Thus, PR interval includes the time frame from start of atrial depolarization to the start of ventricular depolarization.
Thus, the given statement is
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