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Conduction: Difference between revisions
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→Correcting the QT for the heart rate
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[[Image:Formule_QTc.png]] | [[Image:Formule_QTc.png]] | ||
Thus at a heart rate of 60 bpm, the RR interval is 1 second and the QTc equals QT/1. | Thus at a heart rate of 60 bpm, the RR interval is 1 second and the QTc equals QT/1. The QTc calculator can be used to easily calculate QTc from the QT and the heart rate or RR interval. | ||
On modern ECG machines, the QTc is given. However, the machines are not always capable of recognizing the correct QT time. Therefore, it is important to check this manually. | On modern ECG machines, the QTc is given. However, the machines are not always capable of recognizing the correct QT time. Therefore, it is important to check this manually. | ||
{{clr}} | {{clr}} | ||
===Correct measurement of the QT interval: how to measure the end of the T wave=== | ===Correct measurement of the QT interval: how to measure the end of the T wave=== | ||
[[Image:Surawicz.jpg|100px|thumb|left|Dr Surawicz, still active in November 2006, at age 89.]] | [[Image:Surawicz.jpg|100px|thumb|left|Dr Surawicz, still active in November 2006, at age 89.]] | ||