Ecg Waveforms

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An electrocardiogram, or ECG, is a visual representation of the electrical impulses of the heart. An ECG is performed with an electrocardiograph, which uses electrodes to record the electrical impulses of the heart. The ECG represents the heart’s electrical impulses as positive or negative deflections which creates the ECG waveforms. These waveforms are a represented on an ECG as the P-QRS-T sequence. One of the wave forms is the QRS wave complex. The QRS wave complex consists of three waves; the Q wave, the R wave, and the S wave. The QRS complex represents ventricular depolarization or systole. Each individual wave in the QRS complex represents a different deflection. The Q wave is the negative deflection that occurs before the R
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