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Eisenmenger syndrome is a rare progressive heart condition caused by a structural error in the heart, typically a "hole in the heart" (ventricular septal defect) present at birth (congenital heart defect). This causes abnormal blood flow in the heart, resulting in high pressure within the pulmonary artery, the main blood vessel that connects the heart to the lungs (pulmonary hypertension). 
Last updated: 10/21/2010
- NORD. Eisenmenger syndrome. National Organization for Rare Disoders. 2006; http://www.rarediseases.org/search/rdbdetail_abstract.html?disname=Eisenmenger%20Syndrome. Accessed 10/14/2010.
- MedlinePlus was designed by the National Library of Medicine to help you research your health questions, and it provides more information about this topic.
- The National Organization for Rare Disorders (NORD) is a federation of more than 130 nonprofit voluntary health organizations serving people with rare disorders. Click on the link to view information on this topic.
- Medscape Reference provides information on this topic. You may need to register to view the medical textbook, but registration is free.
- The Monarch Initiative brings together data about this condition from humans and other species to help physicians and biomedical researchers. Monarch’s tools are designed to make it easier to compare the signs and symptoms (phenotypes) of different diseases and discover common features. This initiative is a collaboration between several academic institutions across the world and is funded by the National Institutes of Health. Visit the website to explore the biology of this condition.
- Orphanet is a European reference portal for information on rare diseases and orphan drugs. Access to this database is free of charge.
- PubMed is a searchable database of medical literature and lists journal articles that discuss Eisenmenger syndrome. Click on the link to view a sample search on this topic.