A 6-week-old premature infant born at 28 weeks presents with worsening respiratory distress and signs of congestive heart failure. Vital signs: HR 165/min, RR 58/min, BP 58/32 mmHg, SpO2 88% on supplemental oxygen. Auscultation reveals a continuous "machinery" murmur. Chest X-ray shows pulmonary edema and cardiomegaly. The mother reports taking indomethacin for migraines throughout pregnancy. No cyanosis is noted. Which diagnosis best explains these findings?
- A)Patent ductus arteriosusGABARITO
- B)Tetralogy of Fallot
- C)Ventricular septal defect
- D)Coarctation of the aorta
- E)Atrial septal defect
Explicação
Patent ductus arteriosus (PDA) is common in premature infants with respiratory distress syndrome. The patent ductus allows left-to-right shunting, worsening pulmonary edema and respiratory status. The continuous murmur is pathognomonic. Indomethacin during pre... Ver explicação completa e trilha adaptativa →