Congenitally Corrected Transposition
- Author: Arnold S Baas, MD, FACC, FACP; Chief Editor: Park W Willis IV, MD more...
Background
Congenitally corrected transposition of the great vessels is a rare congenital heart defect associated with multiple cardiac morphological abnormalities and conduction defects.
Pathophysiology
During embryological development, left-handed looping of the heart tube results in atrioventricular (AV) discordance, and the aortopulmonary septum fails to rotate 180°, resulting in ventriculoarterial discordance. Blood flows in an effective sequence, hence the name corrected; however, the right ventricle supports the systemic circulation in this disorder.
Venous blood returns from the body into the right atrium before passing through the mitral valve into a morphological left ventricle. Blood then enters the lungs via the pulmonic valve into the main pulmonary artery. Pulmonary venous blood returns to the left atrium and then passes through the tricuspid valve to the morphological right ventricle, exiting to the aorta via the aortic valve. The aorta is positioned anterior and to the left of the pulmonary artery. In effect, the ventricles are transposed.
Epidemiology
Frequency
United States
Data from the Baltimore-Washington Infant Study supported the fact that congenitally corrected transposition is a rare disorder.[1] As many as 40 infants per 100,000 live births are affected by congenitally corrected transposition of the great vessels; this is fewer than 1% of all congenital heart defects.
International
This disorder is reported in 0.5% of patients with congenital heart disease, and the literature reports fewer than 1000 cases. Most pediatric cardiologists have seen multiple cases of congenitally corrected transposition of the great vessels; however, the true prevalence of the malformation is not known.
Mortality/Morbidity
- Ten-year survival rate ranges from 64-83% from the time of diagnosis and is dependent on associated anomalies.
- Freedom[2] reported an operative mortality rate of 6% and a 15-year actuarial survival rate of 48% in a cohort of patients with congenitally corrected transposition of the great vessels at the Hospital for Sick Children in Toronto.
- A rare patient without associated cardiac anomalies may have a much more benign course, and literature documents many examples of these patients being diagnosed in the sixth and seventh decades of life.[3, 4, 5]
- A median age at death of 40 years has been reported in both patients who have undergone operation and those who have not.
Ferencz, Loffredo, Correa-Villasenor. Genetic and environmental risk factors of major cardiovascular malformations: The Baltimore-Washington Infant Study, 1981-1989. Perspectives in Pediatric Cardiology. 1989:Volume 5.
Freedom RM. Congenitally corrected transposition of the great arteries: definitions and pathologic anatomy. Prog Ped Cardiol. 1999;10:3-16.
Sloth AD, Jensen JK, Steffensen FH, Norgaard BL. [Congenital transposition of the great arteries newly diagnosed in a 76-year-old woman]. Ugeskr Laeger. Jan 26 2009;171(5):319-21. [Medline].
Kwon SH, Oh JH, Hwang SJ, Kim SJ, Kim WS, Kim MG, et al. Congenitally corrected transposition of the great arteries in a 59-year-old man: ECG-gated 64-slice MDCT findings. Int J Cardiol. Jan 23 2009;[Medline].
Kozelj M, Prokselj K, Berden P, Jan M, Osredkar J, Bunc M, et al. The syndrome of cardiac failure in adults with congenitally corrected transposition. Cardiol Young. Dec 2008;18(6):599-607. [Medline].
Dabizzi RP, Barletta GA, Caprioli G, et al. Coronary artery anatomy in corrected transposition of the great arteries. J Am Coll Cardiol. Aug 1988;12(2):486-91. [Medline].
Goldmuntz E, Clark BJ, Mitchell LE, et al. Frequency of 22q11 deletions in patients with conotruncal defects. J Am Coll Cardiol. Aug 1998;32(2):492-8. [Medline].
Anderson RH, Becker AE, Arnold R, Wilkinson JL. The conducting tissues in congenitally corrected transposition. Circulation. Nov 1974;50(5):911-23. [Medline].
Anderson RH, Arnold R, Wilkinson JL. The conducting system in congenitally corrected transposition. Lancet. Jun 9 1973;1(7815):1286-8. [Medline].
Connelly MS, Liu PP, Williams WG, et al. Congenitally corrected transposition of the great arteries in the adult: functional status and complications. J Am Coll Cardiol. Apr 1996;27(5):1238-43. [Medline].
Termignon JL, Leca F, Vouhe PR, et al. "Classic" repair of congenitally corrected transposition and ventricular septal defect. Ann Thorac Surg. Jul 1996;62(1):199-206. [Medline].
Ly M, Belli E, Leobon B, Kortas C, Grollmüss OE, Piot D, et al. Results of the double switch operation for congenitally corrected transposition of the great arteries. Eur J Cardiothorac Surg. May 2009;35(5):879-83; discussion 883-4. [Medline].
Warnes CA. Transposition of the Great Arteries. Circulation. 2006;114:2699-2709.
Cheitlin MD, Armstrong WF, Aurigemma GP, Beller GA, Bierman FZ, Davis JL, et al. ACC/AHA/ASE 2003 guideline update for the clinical application of echocardiography--summary article: a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (ACC/AHA/ASE Committee to Update the 1997 Guidelines for the Clinical Application of Echocardiography). J Am Coll Cardiol. Sep 3 2003;42(5):954-70. [Medline]. [Full Text].
Hörer J, Schreiber C, Krane S, Prodan Z, Cleuziou J, Vogt M, et al. Outcome after surgical repair/palliation of congenitally corrected transposition of the great arteries. Thorac Cardiovasc Surg. Oct 2008;56(7):391-7. [Medline].
Graham TP Jr, Bernard YD, Mellen BG, et al. Long-term outcome in congenitally corrected transposition of the great arteries: a multi-institutional study. J Am Coll Cardiol. 2000;36:255-261.
Arendt KW, Connolly HM, Warnes CA, Watson WJ, Hebl JR, Craigo PA. Anesthetic management of parturients with congenitally corrected transposition of the great arteries: three cases and a review of the literature. Anesth Analg. Dec 2008;107(6):1973-7. [Medline].
Therrien J, Barnes I, Somerville J. Outcome of pregnancy in patients with congenitally corrected transposition of the great arteries. Am J Cardiol. Oct 1 1999;84(7):820-4. [Medline].
Genoni M, Jenni R, Hoerstrup SP, Vogt P, Turina M. Pregnancy after atrial repair for transposition of the great arteries. Heart. Mar 1999;81(3):276-7. [Medline]. [Full Text].
Connolly HM, Grogan M, Warnes CA. Pregnancy among women with congenitally corrected transposition of the great arteries. J Am Coll Cardiol. 1999;33:1692-1695.
Bove EL. Congenitally corrected transposition of the great arteries: surgical options for biventricular repair. Prog Ped Cardiol. 1999;10:45-49.
Hui L, Chau AK, Leung MP, Chiu CS, Cheung YF. Assessment of left ventricular function long term after arterial switch operation for transposition of the great arteries by dobutamine stress echocardiography. Heart. Jan 2005;91(1):68-72. [Medline]. [Full Text].
McKay R, Anderson RH, Smith A. The coronary arteries in hearts with discordant atrioventricular connections. J Thorac Cardiovasc Surg. May 1996;111(5):988-97. [Medline].
Okamura K, Konno S. Two types of ventricular septal defect in corrected transposition of the great arteries: reference to surgical approaches. Am Heart J. Apr 1973;85(4):483-90. [Medline].
Webb CL. Congenitally corrected transposition of the great arteries: clinical features, diagnosis, and prognosis. Prog Ped Cardiol. 1999;10:17-30.

