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Interpretation

• Sinus Tachycardia at rate 100 beats/min
• Evolved Anterolateral MI indicated by:
  • ST elevation and QS waves in V1 to V5
  • Q waves and T wave inversion in lateral leads (I and aVL) in some QRS complexes

• Accelerated ventricular focus that competes with the sinus node that results in different QRS morphology
  • QRS complexes 7 , 8 and 10 are Premature Ventricular Complexes (PVC)
  • QRS complexes marked with N are normal
  • The other are Fusion Complexes made by fusing the impulse from the sinus node with the impulse from the ventricular focus

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