Blood supply of heart

Left anterior descending artery/Anterior interventricular artery

  • MC artery involved in MI-40-50%
  • Involves-Anterior wall of LV near apex,Ant portion of ventricular septum,Apex.

Right Coronary artery

  • Supplies SA node.
  • Second most common site of MI.
  • Involves-Inferior/post wall of LV,Posterior portion of ventricular septum,Inf/post RV free wall.

Left Circumflex coronary artery

Infarct involves lateral wall of left ventricle except at the apex.

Marginal artery

Supplies anterior wall of RV.

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