Error in EKG page in worksheet

Discussion in 'Feedback and Suggestions' started by samuel.whiskers, Jun 22, 2014.

  1. samuel.whiskers

    Thread Starter Member

    Mar 17, 2014
    95
    2
    On this page -
    http://www.allaboutcircuits.com/worksheets/scope1.html

    The vertical axis of an EKG is reported to reflect 'heart muscle contraction'. Not really correct - the EKG can only be a measure of electrical activity in the heart - so the vertical axis is always a measure of a potential difference (mV) caused by the movement of ions in the heart muscle.
    This may not reflect heart muscle contraction - not all 'beats' in an EKG will cause the heart muscle to contract, and in a type of cardiac arrest called pulseless electrical activity, the EKG reports a (relatively) normal trace and the heart isn't beating at all.

    Maybe just semantics....

    Lee
     
  2. MrChips

    Moderator

    Oct 2, 2009
    12,440
    3,361
    Yes, you are correct but most readers wouldn't notice the error.
     
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