myocardial infarct vs myocardial infarction

myocardial infarct

noun
  • Synonym of myocardial infarction 

myocardial infarction

noun
  • Necrosis of heart muscle caused by an interruption to the supply of blood to the heart, often as a result of coronary thrombosis. 

How often have the words myocardial infarct and myocardial infarction occurred in a corpus of books? (source: Google Ngram Viewer )