A 6-month-old boy presents with poor feeding and failure to thrive. Vital signs show HR 145 bpm, BP 95/55 mmHg with widened pulse pressure, RR 52/min, and SpO2 92% on room air. Physical examination reveals a continuous 'machinery' murmur at the left infraclavicular area with bounding femoral pulses. Chest X-ray demonstrates pulmonary edema. Echocardiography shows left atrial enlargement. Cyanosis is absent. Which diagnosis is most likely?
- A)Aortic stenosis
- B)Ventricular septal defect
- C)Patent ductus arteriosusGABARITO
- D)Atrial septal defect
- E)Coarctation of the aorta
Explicação
Patent ductus arteriosus (PDA) presents with a continuous 'machinery' or 'train-whistle' murmur heard throughout systole and diastole at the left infraclavicular region. The left-to-right shunt causes widened pulse pressure (increased systolic, decreased diast... Ver explicação completa e trilha adaptativa →