Micro Cases Flashcards
9 yo ate undercooked beef burgers - presents with severe abdominal cramps with grossly bloody diarrhea. No fever or fecal leukocytes. other symps: mild thrombytopenia, hemolytic anemia. Dx and treatment?
suspected: EHEC no treatment with antibiotics because more toxin if kill bacter
18 yo eval for diarrhea and abdominal discomfort. 2 days prior had intermittent, crampy periumbilical abdominal pain. PE: mild lower abdominal tenderness, fecal exam was greenish, watery stool neg for blood. Lab: feces had WBC, stool culture had slightly curved and gram-neg rods Dx? Special problems for HIV?
Campylobacter - inflammatory diarrhea HIV+ will have chronic diarrhea because can’t clear (esp when CD4
26 yo Peace Corps volunteers came back from Togo. Chronic diarrhea for 4 wks w/ crampy abdominal pain and foul-smelling flatulence soon after meals. Nausea after eating. PE: cachectic and 20 lb weight loss of 2 years. Dx? Etiology? Other infections?
Giardia hiker drinking mountain stream water, daycare malaria, typhoid, Dengue
Antibiotic history –> diarrhea. Dx? other disease?
Clostridium difficile. pseudomembranous colitis
Invasive exogenous pathogens?
Shigella, Salmonella, Campylobacter
Most common cause of travellers diarrhea?
ETEC
Viruses tested for routinely?
Adenovirus and Rotavirus
What viral gastroenteritis has icterus and long illness duration?
Hep A < Hep E
What viruses are there vaccines for?
Rotavirus and HAV
How many stool specimens are collected?
3 specimens every other day or within 10 days
What is this? What does it mean?
Charcot-Leyden crystals - diagnostic for helminth infection and allergies assocaited with eosinophilia
- esocinophil granulocyte breakdown
Difference between Taenia solium and saginata?
solium - pork, has crown and hooklets
saginata - beef, has bare crown
