EKG Question #9


The nurse evaluates the following electrocardiogram strip following a cardiac intervention and determines that:


  1. Treatment for the myocardial infarction is unsuccessful
    • Rationale:
  2. Atrial-sensed pacing spikes are present following pacemaker insertion
    • Rationale:
  3. Atropine administration was successful
    • Rationale:
  4. Blockage of the left arterial descending coronary artery
    • Rationale:



ECG depicting spikes followed by a QRS complex indicates a paced rhythm. Indications include symptomatic second or third degree heart block, syncope with sinus node disease, or persistent AV block post surgery. The ECG does not indicate efficacy of treatment for a MI, efficacy of treatment with atropine, and does not indicate coronary blockage.

Learning Outcomes

Test Taking Tip

Video Rationale