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The ECG waveform that represents ventricular depolarization is the __________________.

Question

The ECG waveform that represents ventricular depolarization is the __________________.

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Solution

The ECG waveform that represents ventricular depolarization is the QRS complex.

Explanation

The QRS complex is a crucial component of the electrocardiogram (ECG or EKG), which graphically represents the electrical activity of the heart during each heartbeat. Ventricular depolarization occurs when the ventricles of the heart are stimulated to contract, allowing blood to be pumped to the lungs and the rest of the body. This process is essential for maintaining circulation and oxygen delivery in the body.

In the ECG tracing, the QRS complex appears as a sharp, spiked wave following the P wave, which represents atrial depolarization, and it occurs after the atrial contraction. The duration of the QRS complex is generally shorter than that of the P wave and is considered normal when it's less than 0.12 seconds. Any abnormalities in the QRS complex can indicate issues related to the conduction of electrical impulses in the ventricles, which can be critical for diagnosing various heart conditions.

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