A 31-year-old man with advanced HIV presents with profuse watery diarrhea for 3 weeks and 12-pound weight loss. Vital signs: BP 104/68, HR 102, RR 18, Temp 37.2°C, SpO2 98% on room air. CD4 count is 78 cells/μL. Stool examination reveals acid-fast oocysts; bacterial cultures remain negative. Abdominal examination shows mild distension without rebound tenderness. Which organism most likely causes this patient's symptoms?
- A)Microsporidia
- B)Cyclospora cayetanensis
- C)Giardia lamblia
- D)Entamoeba histolytica
- E)Cryptosporidium parvumGABARITO
Explicação
Cryptosporidium parvum is correct. Cryptosporidium causes watery diarrhea and is especially severe in patients with AIDS. Acid fast oocysts in the stool are characteristic, and infection is acquired through contaminated water. Ver explicação completa e trilha adaptativa →