A 2-year-old boy with a history of cyanotic heart disease presents to the ED with acute severe cyanosis and syncope during crying. His mother reports 'tet spells' that respond to knee-chest positioning. Cardiac examination reveals a single S2 and a harsh systolic ejection murmur at the left upper sternal border. Which of the following is the most likely diagnosis?
- A)Transposition of the great arteries
- B)Ventricular septal defect
- C)Patent ductus arteriosus
- D)Tetralogy of FallotGABARITO
- E)Pulmonary stenosis
Explicação
Tetralogy of Fallot (TOF) is the most common cyanotic heart disease beyond infancy. The classic tetrad includes VSD, right ventricular outflow tract obstruction (pulmonary stenosis), right ventricular hypertrophy, and overriding aorta. Tet spells are acute hyp... Ver explicação completa e trilha adaptativa →