Truncus arteriosus

Truncus arteriosus (TA) is a rare congenital cardiovascular anomaly characterized by a single arterial trunk arising from the heart by means of a single semilunar valve (<I>i.e.</I> truncal valve). Pulmonary arteries originate from the common arterial trunk distal to the coronary arteries and proximal to the first brachiocephalic branch of the aortic arch. TA typically overrides a large outlet ventricular septal defect (VSD). The intracardiac anatomy usually displays situs solitus and atrioventricular (AV) concordance.

Hypoplastic right heart

Underdevelopment of the right-sided structures of the heart.

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PMID (PMCID)
19533158	FEMALE	Adult
	Prenatal diagnosis of tricuspid atresia with hypoplastic right ventricle associated with truncus arteriosus communis type II.
	Tonni G, Panteghini M, Ventura A, Bonasoni MP, Rognoni G, Bellotti M. Arch Gynecol Obstet. 2010;281(2):255-9.
	The echocardiographic examination showed, at the level of the four-chamber view, a predominant left ventricle with a rudimental right ventricle and a single artery emerging with failed visualization of the pulmonary trunk: a diagnosis of truncus arteriosus communis associated with tricuspid atresia and hypoplastic right heart was made.