QT interval

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Science and technology

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What Wikipedia says

The QT interval is a measurement made on an electrocardiogram used to assess some of the electrical properties of the heart. It is calculated as the time from the start of the Q wave to the end of the T wave, and correlates with the time taken from the beginning to the end of ventricular contraction and relaxation.

Excerpt from the Wikipedia article “QT interval”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Derivative: Rehua Original: Hank van Helvete, CC BY-SA 3.0, via Wikimedia Commons.