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Conduction: Difference between revisions
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|nextname=Step 4: Learn how to determine the heart axis | |nextname=Step 4: Learn how to determine the heart axis | ||
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[[Image:QRSwaves.jpg|thumb]] | [[Image:QRSwaves.jpg|thumb|300px|right]] | ||
==The PQ interval== | ==The PQ interval== | ||
The PQ interval starts at the beginning of the atrial contraction and ends at the beginning of the ventricular contraction. | The PQ interval starts at the beginning of the atrial contraction and ends at the beginning of the ventricular contraction. | ||