ECG rules
Which of these describes 2nd Degree AV Block, Type II?

2nd Degree AV Block, Type II

  • Rate

    > 250 (uncountable)

  • Regularity

    Irregular (unidentifiable)

  • P waves

    None

  • PRI

    None

  • QRS

    Chaotic

  • Rate

    Any

  • Regularity

    Regularly Irregular

  • P waves

    Upright and uniform

  • PRI

    Cyclic pattern of conducted and dropped beats

  • QRS

    0.08-0.12

  • Rate

    60-100

  • Regularity

    Regular

  • P waves

    Inverted, if present

  • PRI

    < 0.12, if P waves are even visible

  • QRS

    0.08-0.12