A 3-month-old boy presents with poor feeding and tachypnea for 2 weeks. Vital signs show HR 160 bpm, RR 52/min, BP 85/55 mmHg, SpO2 94% on room air, and normal temperature. Physical examination reveals a harsh holosystolic murmur at the left lower sternal border. Chest X-ray demonstrates pulmonary edema and cardiomegaly. Echocardiography confirms a defect in the interventricular septum. The patient takes no chronic medications. Which diagnosis best explains these findings?
- A)Patent ductus arteriosus
- B)Tetralogy of Fallot
- C)Coarctation of the aorta
- D)Atrial septal defect
- E)Ventricular septal defectGABARITO
Explicação
Ventricular septal defect is correct. A harsh holosystolic murmur at the left lower sternal border is classic for a VSD, and larger defects can produce symptoms of pulmonary overcirculation and heart failure in infancy. It is the most common congenital heart d... Ver explicação completa e trilha adaptativa →