A 3-week-old male infant presents with abdominal distension, failure to pass meconium within 48 hours of life, and now exhibits recurrent cough with poor weight gain. Vital signs show HR 145/min, RR 38/min, SpO2 92% on room air, and temperature 37.2°C. Chest X-ray reveals hyperinflation with bronchial wall thickening. 72-hour sweat chloride test is pending. He has not received pancreatic enzyme supplementation. Which of the following additional findings is most likely in this patient?
- A)Increased pancreatic bicarbonate secretion
- B)Nephritic syndrome due to anti basement membrane antibodies
- C)Decreased sweat chloride concentration
- D)Congenital absence of the vas deferens in adulthoodGABARITO
- E)Right sided aortic arch from neural crest migration failure
Explicação
Congenital absence of the vas deferens in adulthood is correct. Meconium ileus, recurrent pulmonary infections, and failure to thrive suggest cystic fibrosis. In male patients, cystic fibrosis is classically associated with congenital bilateral absence of the ... Ver explicação completa e trilha adaptativa →