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-   -   The cause of poor school performance (https://www.usmle-forums.com/usmle-step-1-forum/2682-cause-poor-school-performance.html)

FreakingOut 05-17-2010 09:23 AM

The cause of poor school performance
 
A 6-year-old boy is brought to the pediatrician for poor school performance. He is unable to pay attention and often daydreams. Laboratory studies are obtained, leukocytes 5.5 / mm3, hemoglobin 6.5 g/dL, hematocrit 20%, platelets 400 / mm3, smear is hypochromic, microcytic red blood cells with basophilic stippling. Which of the following is the most likely explanation?

A) Attention deficit disorder
B) Folate deficiency
C) Lead intoxication
D) Mercury intoxication
E) Vitamin B12 deficiency

khushboo 05-17-2010 09:57 AM

C
 
leukocytes 5.5 / mm3
hemoglobin 6.5 g/dL
hematocrit 20%
hypochromic, microcytic red blood cells
with basophilic stippling
All goes in favour of lead poisoning...
m not sure whether platelet count reduces or not...??:notsure:

ecgram 05-17-2010 11:33 AM

yup i think its C

u can use the pneumonic LEAD itself for the symptoms

L lead lines(basophilic stippling)
E encephalopathy
A anemia abdominal
D wrist drop, foor drop

achistikbenny 05-17-2010 01:03 PM

yes the ans is lead poisoning. thanks for the mnemonic


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