ECG rules
Which of these describes Normal Sinus Rhythm?

Normal Sinus Rhythm

  • Rate

    > 100

  • Regularity

    Regular

  • P waves

    Inverted, if present

  • PRI

    < 0.12, if P waves are even visible

  • QRS

    0.08-0.12

  • Rate

    60-100

  • Regularity

    Irregular

  • P waves

    Upright and uniform

  • PRI

    0.12-0.20

  • QRS

    0.08-0.12

  • Rate

    60-100

  • Regularity

    Regular

  • P waves

    Upright and uniform

  • PRI

    0.12-0.20

  • QRS

    0.08-0.12