ECG rules
Which of these describes 3rd Degree AV Block?

3rd Degree AV Block

  • Rate

    > 250 (uncountable)

  • Regularity

    Irregular (unidentifiable)

  • P waves

    None

  • PRI

    None

  • QRS

    Chaotic

  • Rate

    Any

  • Regularity

    Irregular pattern, but regular R-R

  • P waves

    Upright and uniform

  • PRI

    No relationship between P and QRS

  • QRS

    May be narrow or wide

  • Rate

    < 40

  • Regularity

    Regular

  • P waves

    None

  • PRI

    None

  • QRS

    > 0.12; bizarre