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  • hiphop2009
    hiphop2009's Avatar
    5,794 posts since Jan '06
    • 17 Jul `08, 10:32PM

      hi guys i need some help~

       

      as u all noe basic ECG lead is made up of 3 lead. left arm, right arm and left leg, forming the Einthoven's triangle, plus a right leg for grounding. so my qns is,

       

      can the left leg and right leg replaces the left arm and right arm for ECG measurement? (assuming dat we are measuring a one lead ECG, which is only taking the left arm and right arm for ECG measurement, without right leg as reference)

       

      thanks and hope to hear views on this~

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    Darkness_hacker99
    Darkness_hacker99's Avatar
    31,701 posts since Jun '05
  • hiphop2009
    hiphop2009's Avatar
    5,794 posts since Jan '06
    • 17 Jul `08, 10:52PM

      because it is for my project.

      i also studied 12 leads (though i think not very detailed), ya lo. i got this qns. hmm.....help! arr!

  • ifish
    ifish's Avatar
    2,137 posts since Dec '06
    • 17 Jul `08, 10:54PM

      i think can.. but the machine will beep like crazy cause missing lead and ur pqrst wave wont be accurate

      Edited by ifish 17 Jul `08, 10:55PM
  • hiphop2009
    hiphop2009's Avatar
    5,794 posts since Jan '06
    • 17 Jul `08, 11:02PM
      Originally posted by ifish:

      i think can.. but the machine will beep like crazy cause missing lead and ur pqrst wave wont be accurate


      i noe. cause my project is doing this and i have tested it on both thumb. and my project's ultimate aim is to get ECG waveform (one lead, so it is noisy) when the two electrode touches the two legs of the person, instead of the thumb.

      i have this qns because i noe right leg is always used as reference, but i wan to be sure if two legs can be used instead of two thumbs.

       

      sigh, i hav been losing sleep because of this~

  • ifish
    ifish's Avatar
    2,137 posts since Dec '06
  • hiphop2009
    hiphop2009's Avatar
    5,794 posts since Jan '06
    • 17 Jul `08, 11:16PM
      Originally posted by ifish:

      nope..

      wont be accurate

      but PQRS waveform can still be detected?

      or simply too inaccurate?

  • ifish
    ifish's Avatar
    2,137 posts since Dec '06
    • 17 Jul `08, 11:24PM
      Originally posted by hiphop2009:

      but PQRS waveform can still be detected?

      or simply too inaccurate?


      i dont think can be detected. why not u just try?

  • hiphop2009
    hiphop2009's Avatar
    5,794 posts since Jan '06
    • 17 Jul `08, 11:32PM
      Originally posted by ifish:


      i dont think can be detected. why not u just try?


      i tried but cant get anything. because i not very sure whether is my circuit need to fine tune or is it not even possible to get.

      need to test the theory soon. tmr.

  • hiphop2009
    hiphop2009's Avatar
    5,794 posts since Jan '06
    • 29 Jul `08, 7:55PM

      tested the theory out and it works.

      thanks for all the help!

      thread close and case close~

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