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Conduction: Difference between revisions
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→The QT interval
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[[Image:QRSinterval.jpg|thumb| The QT interval start at the onset of the Q wave and ends where the tangent line for the steepest part of the T wave intersects with the baseline of the ECG. Click on the image for a bigger image]] | [[Image:QRSinterval.jpg|thumb| The QT interval start at the onset of the Q wave and ends where the tangent line for the steepest part of the T wave intersects with the baseline of the ECG. Click on the image for a bigger image]] | ||
===The normal QTc interval=== | ===The normal QTc interval=== | ||
The QT interval indicates how fast the ventricles are repolarized and how fast they are ready for a new heart cycle. The normal value for QTc(orrected) is: '''440-450ms for men and 450-470ms for women'''. <cite>Moss</cite> | The QT interval indicates how fast the ventricles are repolarized and how fast they are ready for a new heart cycle. The normal value for QTc(orrected) is: '''below 440-450ms for men and below 450-470ms for women'''. <cite>Moss</cite> | ||
===Risk of QT prolongation=== | ===Risk of QT prolongation=== | ||