DefinitionBy Mayo Clinic Staff
Truncus arteriosus (TRUNG-kus ahr-teer-e-O-sus) is a rare heart defect that's present at birth (congenital). If your baby has truncus arteriosus, it means that one large blood vessel leads out of the heart. Normally, there are two separate vessels coming out of the heart.
In addition, there is usually a hole between the two lower chambers of the heart known as a ventricular septal defect. As a result of truncus arteriosus, oxygen-poor blood that should go to the lungs and oxygen-rich blood that should go to the rest of the body are mixed together. This creates severe circulatory problems.
If left untreated, truncus arteriosus can be fatal. Surgery to repair truncus arteriosus is generally successful, especially if the repair occurs before your baby is 2 months old.
Oct. 01, 2015
- Bonow RO, et al. Diseases of the heart, pericardium and pulmonary vasculature bed. In: Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine. 10th ed. Philadelphia, Pa.: Saunders Elsevier; 2015. http://www.clinicalkey.com. Accessed Sept. 7, 2015.
- Kouchoukos NT, et al. Truncus arteriosus. In: Kirklin/Barratt-Boyes Cardiac Surgery. 4th ed. Philadelphia, Pa.: Saunders Elsevier; 2013. http://www.clinicalkey.com. Accessed Sept. 7, 2015.
- Facts about truncus arteriosus. Centers for Disease Control and Prevention. http://www.cdc.gov/ncbddd/heartdefects/truncusarteriosus.html. Accessed Sept. 7, 2015.
- Soriano B, et al. Truncus arteriosus. http://www.uptodate.com/home. Accessed Sept. 7, 2015.
- Moore KL, et al. Cardiovascular system. In: The Developing Human. 10th ed. Philadelphia, Pa.: Elsevier; 2016. http://www.clinicalkey.com. Accessed Sept. 7, 2015.
- Congenital heart defects and CCHD. March of Dimes. http://www.marchofdimes.org/baby/congenital-heart-defects.aspx. Accessed Sept. 8, 2015.
- Truncus arteriosus. American Heart Association. http://www.heart.org/HEARTORG/Conditions/CongenitalHeartDefects/AboutCongenitalHeartDefects/Truncus-Arteriosus_UCM_307040_Article.jsp. Accessed Sept. 7, 2015.
- Guidance for preventing birth defects. Centers for Disease Control and Prevention. http://www.cdc.gov/ncbddd/birthdefects/prevention.html. Accessed Sept. 9, 2015.