truncus arteriosus


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truncus

 [trung´kus] (L.)
truncus arterio´sus an artery connected with the fetal heart, developing into the aortic and pulmonary arches.
truncus brachiocepha´licus a vessel arising from the aortic arch and giving origin to the right common carotid and right subclavian arteries. Called also innominate artery (see anatomic Table of Arteries in the Appendices).
truncus celi´acus celiac trunk.
truncus encepha´licus brainstem.
truncus pulmona´lis pulmonary trunk.

trun·cus ar·te·ri·o·'sus

the common arterial trunk opening out of both ventricles in the embryo, later destined to be divided into aorta and pulmonary artery by development of the spiral aorticopulmonary septum.

truncus arteriosus

Etymology: L, trunk; Gk, arteria, airpipe
the embryonic arterial trunk that initially opens from both ventricles of the heart and later divides into the aorta and the pulmonary trunk, the two parts separated by the bulbar septum.

truncus arteriosus

Cardiology A congenital heart defect characterized by a single arterial trunk arising in the ventricle, which supplies the pulmonary, coronary, and systemic circulation; a large VSD always accompanies TAs, essentially converting the right and left ventricles into a single chamber; blood flows at a higher pressure through the arteries–the pressure in the pulmonary circulation is normally low; systemic pressure in the pulmonary circulation ↑ blood flow through the lungs, ↑ cardiac load, heart failure; ↑ pulmonary pressure eventually damages the pulmonary vessels, causing ↑ pulmonary resistance, ergo ↓ pulmonary blood flow and cyanosis Clinical SOB, fatigue, heart failure, poor growth, physical development and, untreated, death at a young age. See Cyanotic heart disease.

truncus

pl. trunci [L.] trunk; individual trunci are listed as trunks in Table 9 (arteries) and Table 14 (nerves).

truncus arteriosus
an artery connected with the fetal heart, developing into the aortic and pulmonary arches. The trunk may persist into extrauterine life. The single arterial trunk from the heart supplies blood to both aortic and pulmonary circuits.
truncus brachiocephalicus
a vessel arising from the arch of the aorta and giving origin to one or both of the common carotid and one or both right subclavian arteries.
truncus celiacus
celiac trunk.
truncus pulmonalis
pulmonary trunk.
References in periodicals archive ?
9-year old male patient with a diagnosis of uncorrected truncus arteriosus type I, and severe pulmonary hypertension that presents with severe right knee pain and gate limitation.
There she became the first baby with truncus arteriosus at Bristol to undergo lifesaving bilateral pulmonary artery banding surgery.
Chetboul, "Persistent truncus arteriosus in a 6-year-old cat," Journal of Veterinary Medicine Series A: Physiology Pathology Clinical Medicine, vol.
Another work [15] also noticed four heart segments, namely, sinus venosus, atrium, ventricle, and truncus arteriosus in caudocranial sequence.
These include Tetrology of Fallot (TOF) with Absent Pulmonary Valve Syndrome (APVS), Truncus Arteriosus (TA), Pulmonary Atresia with Ventricular Septal Defect (PA-VSD), Transposition of Great Arteries, Ventricular Septal Defect with Pulmonary Stenosis, (d-TGA-VSD-PS) and Aortic Stenosis (AS).
Aortopulmonary window is caused by the failure to fuse of the two opposing conotruncal ridges that are responsible for separating the truncus arteriosus into the aorta and pulmonary artery.
Congenital malformations that can result in cyanosis, increased pulmonary blood flow, and biventricular enlargement on electrocardiogram include transposition of the great arteries with pulmonary hypertension, single ventricle, truncus arteriosus, ventricular septal defect with moderate pulmonic stenosis, and occasionally pulmonary atresia with an intact ventricular septum and a large patent ductus arteriosus or significant tricuspid regurgitation.
The transducer was then rotated towards the base of the heart and anomalies as transposition of the great arteries, truncus arteriosus and over riding aorta were excluded.
The seven CCHDs that are primary targets for screening are hypoplastic left heart syndrome, pulmonary atresia (with intact septum), transposition of the great arteries, truncus arteriosus, tricuspid atresia, tetralogy of Fallot, and total anomalous pulmonary venous return (4).
The SACHDNC had identified seven specific lesions as primary targets for screening: hypoplastic left heart syndrome, pulmonary atresia, tetralogy of Fallot, total anomalous pulmonary venous return, transposition of the great arteries, tricuspid atresia, and truncus arteriosus.
Millie was born with truncus arteriosus, an uncommon condition that creates a large hole between the two pumping chambers of the heart.