What are PR, QRS, and QT intervals, and what should they normally measure?


In an EKG reading what are PR, QRS, and QT intervals, and what should they normally measure?
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Posted in Heart Diseases |

2 Responses

  1. jacalynfreeborn Says:
    January 28th, 2010 at 7:13 am

    The PR interval represents the time it takes for a stimulus to travel from the SA node to the purkinje fibers.

    QRS is ventricular depolarization.

    QT interval is the time it takes for the ventricles to depolarize and repolarize.

  2. mago Says:
    January 30th, 2010 at 8:09 pm

    PR = 0.12 to 0.20
    QRS = 0.06 to 0.10
    QT = is rate dependent, but 0.44 is upper limits of normal