A 10-month-old unvaccinated infant presents in January with profuse watery diarrhea and vomiting for 2 days. He appears lethargic with dry mucous membranes and sunken fontanelle. Vital signs show HR 128/min, RR 32/min, BP 85/55 mmHg, and temperature 38.2°C. Laboratory studies reveal serum sodium 128 mEq/L and elevated BUN-to-creatinine ratio. Stool culture is negative. Which organism is most likely responsible for this clinical presentation?
- A)Enterotoxigenic Escherichia coli
- B)Adenovirus
- C)RotavirusGABARITO
- D)Norovirus
- E)Giardia lamblia
Explicação
Rotavirus is correct. Severe winter gastroenteritis in infants with dehydration is a classic presentation of rotavirus. It is a segmented double stranded RNA virus and is preventable with an oral live vaccine in infancy. Ver explicação completa e trilha adaptativa →