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Tetralogy of Fallot

Orphanet journal of rare diseases, 2009-01, Vol.4 (1), p.2-2, Article 2 [Peer Reviewed Journal]

COPYRIGHT 2009 BioMed Central Ltd. ;COPYRIGHT 2009 BioMed Central Ltd. ;Copyright © 2009 Bailliard and Anderson; licensee BioMed Central Ltd. 2009 Bailliard and Anderson; licensee BioMed Central Ltd. ;ISSN: 1750-1172 ;EISSN: 1750-1172 ;DOI: 10.1186/1750-1172-4-2 ;PMID: 19144126

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  • Title:
    Tetralogy of Fallot
  • Author: Bailliard, Frederique ; Anderson, Robert H
  • Subjects: Adult ; Care and treatment ; Development and progression ; Diagnosis ; Genetic Counseling ; Heart Defects, Congenital - diagnostic imaging ; Heart Defects, Congenital - genetics ; Heart Defects, Congenital - mortality ; Heart Defects, Congenital - surgery ; Humans ; Infant ; Infant, Newborn ; Prognosis ; Review ; Risk factors ; Tetralogy of Fallot ; Tetralogy of Fallot - diagnostic imaging ; Tetralogy of Fallot - genetics ; Tetralogy of Fallot - mortality ; Tetralogy of Fallot - surgery ; Ultrasonography
  • Is Part Of: Orphanet journal of rare diseases, 2009-01, Vol.4 (1), p.2-2, Article 2
  • Description: Tetralogy of Fallot is a congenital cardiac malformation that consists of an interventricular communication, also known as a ventricular septal defect, obstruction of the right ventricular outflow tract, override of the ventricular septum by the aortic root, and right ventricular hypertrophy. This combination of lesions occurs in 3 of every 10,000 live births, and accounts for 7-10% of all congenital cardiac malformations. Patients nowadays usually present as neonates, with cyanosis of varying intensity based on the degree of obstruction to flow of blood to the lungs. The aetiology is multifactorial, but reported associations include untreated maternal diabetes, phenylketonuria, and intake of retinoic acid. Associated chromosomal anomalies can include trisomies 21, 18, and 13, but recent experience points to the much more frequent association of microdeletions of chromosome 22. The risk of recurrence in families is 3%. Useful diagnostic tests are the chest radiograph, electrocardiogram, and echocardiogram. The echocardiogram establishes the definitive diagnosis, and usually provides sufficient information for planning of treatment, which is surgical. Approximately half of patients are now diagnosed antenatally. Differential diagnosis includes primary pulmonary causes of cyanosis, along with other cyanotic heart lesions, such as critical pulmonary stenosis and transposed arterial trunks. Neonates who present with ductal-dependent flow to the lungs will receive prostaglandins to maintain ductal patency until surgical intervention is performed. Initial intervention may be palliative, such as surgical creation of a systemic-to-pulmonary arterial shunt, but the trend in centres of excellence is increasingly towards neonatal complete repair. Centres that undertake neonatal palliation will perform the complete repair at the age of 4 to 6 months. Follow-up in patients born 30 years ago shows a rate of survival greater than 85%. Chronic issues that now face such adults include pulmonary regurgitation, recurrence of pulmonary stenosis, and ventricular arrhythmias. As the strategies for surgical and medical management have progressed, the morbidity and mortality of those born with tetralogy of Fallot in the current era is expected to be significantly improved.
  • Publisher: England: BioMed Central Ltd
  • Language: English
  • Identifier: ISSN: 1750-1172
    EISSN: 1750-1172
    DOI: 10.1186/1750-1172-4-2
    PMID: 19144126
  • Source: GFMER Free Medical Journals
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    PubMed Central
    Springer Nature OA/Free Journals
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