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Tetralogy of Fallot. The spectrum of severity in a regional study, 1981-1985

S S Karr1, J I Brenner, C Loffredo

  • 1Children's National Medical Center, Washington, DC.

American Journal of Diseases of Children (1960)
|January 1, 1992
PubMed

Insights

Tetralogy of Fallot (TOF) in infants had a 28% mortality rate. Risk factors like pulmonary atresia and prematurity significantly increased death probability, highlighting the need for comprehensive regional studies.

Area of Science:

  • Pediatric Cardiology
  • Congenital Heart Defects
  • Public Health Research

Background:

  • Tetralogy of Fallot (TOF) is a complex congenital heart defect with a wide spectrum of clinical severity.
  • Early diagnosis and surgical repair are crucial but do not eliminate mortality risks.

Purpose of the Study:

  • To determine the combined medical and surgical mortality rate for infants diagnosed with Tetralogy of Fallot.
  • To identify significant risk factors associated with mortality in this population.
  • To underscore the value of regional, inclusive studies for understanding rare diseases.

Main Methods:

  • Retrospective analysis of 125 infants diagnosed with Tetralogy of Fallot.
  • Data collected through the Baltimore-Washington Infant Study registry.
  • Follow-up conducted to determine mortality rates and identify risk factors.

Main Results:

  • A combined medical and surgical mortality rate of 28% was observed.
  • Significant risk factors for death included pulmonary atresia, major cardiac and noncardiac anomalies, low birth weight, and prematurity.
  • Infants with isolated TOF and no risk factors had an excellent prognosis, while those with multiple risk factors faced high neonatal death probability.

Conclusions:

  • While treatment advances improve outcomes for some, not all infants with Tetralogy of Fallot benefit equally.
  • Regional, comprehensive studies of specific cardiac defects are essential for defining research and treatment challenges.
  • Understanding risk stratification is key to improving survival rates for infants with complex congenital heart disease.

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