Eisenmenger complex

noun

Ei·​sen·​meng·​er complex ˈī-zən-ˌmeŋ-ər-, -sən- 

variants or Eisenmenger's complex

-ərz- 

: the combination of a congenital defect in the septum between the ventricles of the heart with its early complications that include left to right blood flow through the defect, increased blood pressure in the pulmonary arteries, and hypertrophy of the right ventricle