A 4-year-old from rural Mexico presents with progressive abdominal distension, malnutrition, and pallor. Vital signs: HR 115, RR 24, BP 95/60. Laboratory studies show hemoglobin 7.5 g/dL and hypoalbuminemia at 2.8 g/dL. Stool microscopy reveals numerous larvae and barrel-shaped eggs with a characteristic thick shell and mucoid plug at the terminal end. The child denies bloody diarrhea. Which organism is most likely responsible?
- A)Hookworm species
- B)Strongyloides stercoralis
- C)Trichuris trichiura
- D)Ascaris lumbricoidesGABARITO
- E)Enterobius vermicularis
Explicação
Ascaris lumbricoides causes intestinal helminthiasis with malabsorption, malnutrition, and anemia. Eggs are large, thick-shelled with a mucoid plug at the terminal end—pathognomonic morphology. Heavy infections cause abdominal distension and bowel obstruction ... Ver explicação completa e trilha adaptativa →