A 7-year-old boy with cystic fibrosis and chronic steatorrhea presents with progressive balance difficulty and decreased vibration sense in his lower extremities. Vitals: BP 105/68, HR 92, RR 22, Temp 37°C, SpO2 98% on room air. Deep tendon reflexes are diminished. Serum prothrombin time is elevated. He denies recent respiratory infections. Which vitamin deficiency best explains these neurological findings?
- A)Vitamin A
- B)Vitamin K
- C)Vitamin C
- D)Vitamin D
- E)Vitamin EGABARITO
Explicação
Fat malabsorption can cause vitamin E deficiency. Vitamin E is an antioxidant that protects cell membranes from free radical injury, and deficiency can cause hemolytic anemia, posterior column and spinocerebellar dysfunction, and peripheral neuropathy. The ste... Ver explicação completa e trilha adaptativa →