Ventricular outflow tract
{{Short description|Portion of heart ventricles through which blood passes to enter the great arteries}}
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A ventricular outflow tract is a portion of either the left ventricle or right ventricle of the heart through which blood passes in order to enter the great arteries.{{Citation |last1=Tucker |first1=William D. |title=Anatomy, Thorax, Heart Pulmonary Arteries |date=2023 |url=http://www.ncbi.nlm.nih.gov/books/NBK534812/ |work=StatPearls |access-date=2023-10-22 |place=Treasure Island (FL) |publisher=StatPearls Publishing |pmid=30521233 |last2=Weber |first2=Carly |last3=Burns |first3=Bracken}}
The right ventricular outflow tract (RVOT) is an infundibular extension of the ventricular cavity that connects to the pulmonary artery. The left ventricular outflow tract (LVOT), which connects to the aorta, is nearly indistinguishable from the rest of the ventricle. The outflow tract is derived from the secondary heart field, during cardiogenesis.{{Citation |last1=Bassel-Duby |first1=R. |title=Biochemistry of Development: Striated Muscle |date=2013-01-01 |url=https://www.sciencedirect.com/science/article/pii/B9780123786302000918 |encyclopedia=Encyclopedia of Biological Chemistry (Second Edition) |pages=179–186 |editor-last=Lennarz |editor-first=William J. |access-date=2023-10-22 |place=Waltham |publisher=Academic Press |isbn=978-0-12-378631-9 |last2=Olson |first2=E. N. |editor2-last=Lane |editor2-first=M. Daniel}}
Both the left and right outflow tract have their own term. The right outflow tract is called "conus arteriosus" from the outside, and infundibulum from the inside. In the left ventricle the outflow tract is the "aortic vestibule". They both possess smooth walls, and are derived from the embryonic bulbus cordisGray's anatomy for students, 2nd edition
In both left and right ventricle there are specific structures separating the inflow and outflow of blood. In the right ventricle, the inflow and outflow is separated by the supraventricular crest. In the left ventricle, the anterior cusp of the mitral valve is responsible for separating the flow of blood.Moore - Clinically oriented anatomy 7th edition
A form of ventricular tachycardia originating from this anatomical structure is called RVOT tachycardia.{{Cite journal |last=Fuenmayor |first=Abdel J |date=2014-06-30 |title=Treatment Or Cure Of Right Ventricular Outflow Tract Tachycardia |journal=Journal of Atrial Fibrillation |volume=7 |issue=1 |pages=1038 |doi=10.4022/jafib.1038 |doi-broken-date=12 July 2025 |issn=1941-6911 |pmc=5135148 |pmid=27957079}}
The RVOT is pathophysiologically affected in Brugada syndrome.{{cite web | url=http://en.ecgpedia.org/wiki/Brugada_Syndrome | title=Brugada Syndrome - ECGpedia }}