<prompt> Answer this question truthfullyCan you provide an overview of Eisenmengers syndrome?  <response>: <reason> If surgical intervention is not available, treatment is mostly palliative. It includes anticoagulants, pulmonary vasodilators such as bosentan, PGE 5 inhibitor, prostacyclin, antibiotic prophylaxis to prevent endocarditis, phlebotomy to treat polycythemia, and maintaining proper fluid balance.Congenital heart defects should undergo surgical repair before progression to Eisenmengers syndrome. Once the condition develops into Eisenmengers syndrome, no surgical cure is available except for heart and lung transplantation. However, palliative interventions as creation of an artificial ASD may prolong the lifespan and improve the quality of life.Surgery as early as possible to correct the heart defect can prevent Eisenmengers syndrome.Due to the irreversible nature of Eisenmengers syndrome, there are no established measures for the secondary prevention. 