A 6-week-old female infant presents with poor feeding, failure to thrive, and respiratory distress. Physical examination reveals a hyperdynamic precordium, bounding pulses, and a continuous 'machinery' murmur at the left infraclavicular region. The patient was born to a mother who had rubella infection during the first trimester. Which of the following is the most likely diagnosis?
- A)Pulmonary stenosis
- B)Patent ductus arteriosusGABARITO
- C)Coarctation of the aorta
- D)Aortic stenosis
- E)Atrial septal defect
Explicação
Patent ductus arteriosus (PDA) causes a continuous 'machinery' murmur due to left-to-right shunting throughout systole and diastole. It is associated with maternal rubella infection in the first trimester. PDA leads to pulmonary overcirculation, heart failure,... Ver explicação completa e trilha adaptativa →