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Question
Which of the following is a diagrammatic representation of standard electrocardiogram (ECG)?
Which of the following is a diagrammatic representation of standard electrocardiogram (ECG)?
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Solution
The correct option is D
In a normal electrogram (ECG) is composed of a ‘P’ wave, a QRS wave (complex), and a T wave. The ‘P’ wave is a small upward wave that represents electrical excitation or atrial depolarization which leads to contraction of both the atria. QRS wave (complex) begins after a fraction of a second of the P wave. It begins as a small downward deflection (Q) and continues as a larger upright (R) and triangular wave, ending as a downward wave (S) at its base. It represents ventricular depolarization. The ‘T’ wave is dome-shaped which represents ventricular repolarization. The potential generated by the recovery of the ventricle from the depolarization state is called the repolarization wave. The end of the ‘T’ wave marks the end of the systole. Hence option "d" is correct.
In a normal electrogram (ECG) is composed of a ‘P’ wave, a QRS wave (complex), and a T wave. The ‘P’ wave is a small upward wave that represents electrical excitation or atrial depolarization which leads to contraction of both the atria. QRS wave (complex) begins after a fraction of a second of the P wave. It begins as a small downward deflection (Q) and continues as a larger upright (R) and triangular wave, ending as a downward wave (S) at its base. It represents ventricular depolarization. The ‘T’ wave is dome-shaped which represents ventricular repolarization. The potential generated by the recovery of the ventricle from the depolarization state is called the repolarization wave. The end of the ‘T’ wave marks the end of the systole. Hence option "d" is correct.
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