A congenital heart condition involving four abnormalities occurring together, including a defective septum between the ventricles and narrowing of the pulmonary artery, and accompanied by cyanosis.
- Haemoptysis is a potentially lethal complication in adults who have been operated on for congenital heart disease, especially tetralogy of Fallot with pulmonary atresia with ventricular septal defect.
- Right atrial enlargement is associated with chronic obstructive pulmonary disease, pulmonary hypertension, and congenital heart disease for example, pulmonary stenosis and tetralogy of Fallot.
- Pulmonary valvuloplasty can also alleviate cyanotic spells in patients with tetralogy of Fallot whose pulmonary arteries are not yet large enough to undergo primary repair safely.
1920s: named after Etienne L. A. Fallot (1850–1911), French physician.
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