(D) The common arterial trunk (type I) supplies the systemic, pulmonary and coronary (small arrow) circulation (A, aorta large arrow, main pulmonary artery). (C) Outside appearance of a common arterial trunk (type I) showing the aortic (A) and pulmonary (PA) components (RA, right atrial appendage LA, left atrial appendage). (This is now considered a variant of pulmonary atresia with VSD.) (B) Flow of blood in TA. (A) Four types of truncus arteriosus (TA): type i, single pulmonary trunk and ascending aorta arising from a common trunk type ii, left and right PAs arising close together from the posterior or dorsal wall of the truncus type iii, right and left PAs arising independently from either side of the truncus type iv, no PAs identified and there is apparent absence of the sixth arterial arch.Note the low take-off of the main pulmonary artery, just above the valve ring. The common valve lies above a VSD and consists of four thickened leaflets. Ebstein malformation of the tricuspid valve (TV) is also present (C) The aorta (A) arises from a morphologic right ventricle (mRV) on the left side of the heart and is supported by a complete muscular infundibulum (black arrow, coronary orifice). There is fibrous continuity between the pulmonary and mitral (MV) valves (A, aorta RPA, right pulmonary artery arrow, anterior descending coronary artery). (B) The pulmonary artery (PA) arising from a morphologic left ventricle (mLV) on the right side of the heart. The pulmonary artery is positioned posterior and to the right (RA, right atrial appendage arrow, right coronary artery SVC, superior vena cava). (A) Characteristic outward appearance with the aorta (A) arising anterior and to the left of the pulmonary artery (PA). (E) Flow of blood in a heart with TGA and a VSD The chordal attachments of the tricuspid valve (TV) extend across and along the edge of the defect and a portion of the mitral valve protrudes into the defect (small arrow, coronary orifice PA, pulmonary artery). The aorta (A) exits a morphologic right ventricle. There is fibrous continuity between the pulmonary valve and the mitral valve (MV) (A, aorta L, ligamentum arteriosum). (C) The left side of the heart shown in (B) with the pulmonary artery (PA) exiting a morphologic left ventricle (LV) with its smooth septal surface and fine apical trabeculae. Note the anterior aspect of the aorta has been windowed and folded back. Arising from the right ventricle is the aorta (A), with the right coronary orifice and the left main coronary artery easily identified (arrows) (PA, pulmonary artery RA, right atrial appendage LA, left atrial appendage). The open chamber can be identified as a morphologic right ventricle (RV) by the coarse trabeculations (TV, tricuspid valve). (B) TGA with an intact interventricular septum. (A) Flow of blood in heart with transposition of the great arteries (TGA), without a VSD.Subdesarrollo de lado izquierdo y aorta.Las coronarias presentan variabilidad, 20%.Obstrución a la salida del flujo pulmonar.“Corregido” Por que están invertidos los ventrículos Aurícula izquierda-ventrículo morfológicamente derecho-Aorta.Aurícula derecha-Ventrículo morfológicamente izquierdo.Origina de un ventrículo izquierdo normal La Ao es anterior y se origina del ventrículoĭerecho normal, y la Ap es posterior y se.La Arteria pulmonar (Ap) y emerge del ventrículo Normalmente, la Aorta (Ao) es posterior e inferior a.Cardiopatía congénita cianógena más común.Cardiopatias congenitas de flujo pulmonar aumentado
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