09-06-2007, 10:22 PM
hmmmmmmmmm
The correct answer is
B. A heroin addict treated twice for Pneumocystis carinii pneumonia most probably has clinical AIDS. The patient's sensation of incomplete evacuation suggests that his distal colon is involved; the fact that the diarrhea is bloody suggests that the causative agent is very destructive. Of the choices listed, both cytomegalovirus and Entamoeba histolytica may produce this symptom pattern, but cytomegalovirus is much more common than
E. histolytica in AIDS patients.
Cryptosporidium(choice A) causes a small bowel diarrheal syndrome with wasting.
E. histolytica(choice C) may occur in patients with HIV but is less common than cytomegalovirus infection.
Enterotoxigenic Escherichia coli(choice D) would produce a watery diarrhea.
E. coli 01-157 (choice E) is usually acquired by eating contaminated ground beef products and results in a hemolytic-uremic syndrome.
The correct answer is
B. A heroin addict treated twice for Pneumocystis carinii pneumonia most probably has clinical AIDS. The patient's sensation of incomplete evacuation suggests that his distal colon is involved; the fact that the diarrhea is bloody suggests that the causative agent is very destructive. Of the choices listed, both cytomegalovirus and Entamoeba histolytica may produce this symptom pattern, but cytomegalovirus is much more common than
E. histolytica in AIDS patients.
Cryptosporidium(choice A) causes a small bowel diarrheal syndrome with wasting.
E. histolytica(choice C) may occur in patients with HIV but is less common than cytomegalovirus infection.
Enterotoxigenic Escherichia coli(choice D) would produce a watery diarrhea.
E. coli 01-157 (choice E) is usually acquired by eating contaminated ground beef products and results in a hemolytic-uremic syndrome.
