Congenitally corrected transposition of great arteries

Congenitally corrected transposition of great arteries Congenitally corrected transposition of the great arteries (CCTGA or cTGA) is a condition in which there is atrioventricular and ventricular arterial discordance so that the circulation is physiological. Congenitally corrected transposition of great arteries is also known as l-transposition of great arteries (l-TGA) because of the levo transposition of aorta. Levo posed aorta forms a hump along the left upper heart border on chest X-ray. The right atrium connects to the morphological left ventricle, which in turn connects to the pulmonary artery so that systemic venous blood reaches the pulmonary circulation. The left atrium is connected to the morphological right ventricle which ejects to aorta, thereby ensuring that pulmonary venous drainage reaches the systemic circulation. Thus there is a double discordance with atrioventricular and ventriculo arterial discordance. Even though it might appear that physiology of independent series pulmonary and systemic circulations is conceptually proper, the prognosis of patients with c-TGA is not that good, even in the absence of other associated cardiac defects [1]. Hence the need for surgical correction. Definitive surgical correction of c-TGA is known as double switch [2]. Atrial switch is by a modified Senning procedure for rerouting the pulmonary and systemic venous return. Arterial switch is done for correction of ventriculoarterial discordance. The morphological right ventric...
Source: Cardiophile MD - Category: Cardiology Authors: Tags: Cardiology Source Type: blogs