A 3-week-old male infant born to a mother with confirmed first-trimester rubella infection presents to the emergency department with cyanosis, poor feeding, and respiratory distress. Vital signs: heart rate 162/min, respiratory rate 54/min, blood pressure 62/38 mmHg, oxygen saturation 87% on room air. Physical examination reveals a continuous "machinery" murmur heard best at the left infraclavicular region, bilateral cataracts, and hepatomegaly. Echocardiography demonstrates pulmonary stenosis and a patent foramen ovale. Which additional cardiac lesion is most characteristic of congenital rubella syndrome?
- A)Patent ductus arteriosusGABARITO
- B)Ventricular septal defect
- C)Coarctation of the aorta
- D)Transposition of the great arteries
- E)Tetralogy of Fallot
Explicação
Patent ductus arteriosus (PDA) is the third component of the classic cardiac lesion triad in congenital rubella syndrome, alongside pulmonary stenosis and atrial or patent foramen ovale defects. The continuous "machinery" murmur is pathognomonic for PDA. Rubel... Ver explicação completa e trilha adaptativa →