If this is your first visit, be sure to check out the FAQ in HCMA Announcements. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. Your Participation in this message board is strictly voluntary. Information and comments on the message board do not necessarily reflect the feelings, opinions, or positions of the Hypertrophic Cardiomyopathy Association. At no time should participants to this board substitute information within for individual medical advice. The Hypertrophic Cardiomyopathy Association shall not be liable for any information provided herein. All participants in this board should conduct themselves in a professional and respectful manner. Failure to do so will result in suspension or termination. The moderators of the message board working with the HCMA will be responsible for notifying participants if they have violated the rules of conduct for the board. Moderators or HCMA staff may edit any post to ensure it conforms with the rules of the board or may delete it. This community is welcoming to all those with HCM we ask that you remember each user comes to the board with information and a point of view that may differ from that which you hold, respect is critical, please post respectfully. Thank you


No announcement yet.

P-R-T axes


About the Author


Frosty Find out more about Frosty
  • Filter
  • Time
  • Show
Clear All
new posts

  • P-R-T axes

    Does anyone know what the P-R-T axes means on an EKG?

    My numbers keep changing and I cannot seem to find what "normal" is or even what this represents other than electrical activity.

  • #2
    Re: P-R-T axes

    The axis on an ECG relates to the vector of the electrical signal. The vector is the direction the electrical impulse is travelling through the heart.

    Normal range for the P wave vector is between 0 and +75 degrees, for the QRS between -30 and +105 and for the T wave between -30 and +90.
    Dx @ 47 with HOCM & HF:11/00
    Guidant ICD:Mar.01, Recalled/replaced:6/05 w/ Medtronic device
    Lead failure,replaced 12/06.
    SF lead recall:07,extracted leads and new device 2012
    Myect.@ Tufts, Boston:10/5/03; age 50. ( gradient@ 240 mmHg ++)
    Paroxysmal A-Fib: 06-07,2010 controlled w/sotalol dosing
    Genetic mutation 4/09, mother(d), brother, son, gene+
    Mother of 3, grandma of 3:Tim,27,Sarah,33w/6 y/o old Sophia, 5 y/o Jack, Laura 34, w/ 5 y/o old Benjamin


    • #3
      Re: P-R-T axes

      Thanks Pam -

      The electrical I knew but couldn't find the numbers.

      My last EKG is 68 -27 123 so I guess it could be better -- oh well, that's HCM.


      • #4
        Re: P-R-T axes

        Changes in axis can be due to the placement of the electrodes on the chest, so don't read too much into it. No one places those sticky little things in the exact same place each and every time. Severe axis deviation is not a good sign, but, to qualify for this diagnosis, you are probably already a patient in the ICU.



        Today's Birthdays