USMLE Step 1 - deep truths 4
deep truths 4
bingousmle - 11-16-08 03:48
an infant is brought with copious vomitting. you notice that the nature of the vomitus is bilious. you are immediately thinking about which congenital anomaly that is likely to bbe present
bingousmle - 11-16-08 03:48
an infant is brought with copious vomitting. you notice that the nature of the vomitus is bilious. you are immediately thinking about which congenital anomaly that is likely to bbe present
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#2
Re: deep truths 4
bingousmle - 11-16-08 04:51 it would be a case of high intestinal obstruction so i think there would be a possibility of duodenal atresia , malrotation of the gut with midgut volvulus ,annular pancreas , duodenal web..
what is the genetic abnormality in which duodenal atresia is associated and what produces the double bubble sign seen in DA
#3
Re: deep truths 4 moazzamhyder - 11-17-08 21:37 duodenal atresia genetic abnormality is downs syndrome
#4
Re: deep truths 4 bingousmle - 11-17-08 22:36 ya , and the double bubble appearance is due to the air colummn proximal to the obstruction separated by the pyloric sphicter.
any views about malrotation of midgut
#8
Re: deep truths 4 bingousmle - 11-19-08 10:15 we got to wait for usmlefever3 to answer this question
#9
Re: deep truths 4 kingofhearts - 11-19-08 10:17 okie lets wait for him ....meanwhile lets do some groundwork ourselves....
#11
Re: deep truths 4 kingofhearts - 11-19-08 14:50 is it anywhere related to dysphagia....well i cant recollect much at this time ...i guess i have to go back and refer .....
#12
Re: deep truths 4 bingousmle - 11-19-08 22:47 is it the eaten apple core appearance that you are thinking about? seen in ca esophagus
#13
Re: deep truths 4 kingofhearts - 11-20-08 00:53 i am seriously lost buddy ....please bail me out .....
#14
Re: deep truths 4 usmlefever3 - 11-20-08 03:02 srry abt delay
single bubble appearence-pyloric stenosis
cork srew-acute esophageal spasm
apple core appearence-carcinoma colon
an where does one find rat tail appearence and bird beak appearence?
hint surgery
#15
Re: deep truths 4 bingousmle - 11-20-08 03:30 rat tail achalasia cardia?
bird beak -sigmoid volvulus?
#16
Re: deep truths 4 kingofhearts - 11-20-08 08:22 well i think rats tail appearance is the xray finding in carcinoma oesophagus......and in achalasia cardia it is a so called CUCUMBER oesophagus......and birds beak appearance in volvulus of the sigmoid colon.....
#17
Re: deep truths 4 bingousmle - 11-22-08 05:56 an increased levels of the following substances can be corellated with which type of anemia.
1.methylmalonyl coA
2.ferritin
3.homocysteine
4.lactate dehydrogenase.
5.homocysteine
#18
Re: deep truths 4 usmlefever3 - 11-22-08 12:40 1methylmalonyl coA-B12 def anaemia
2.ferritin-sideroblastic anaemia
3.homocysteine-folate or B12 def anaemia
4.lactate dehydrogenase-haemolytic anaemia
#19
Re: deep truths 4 bingousmle - 11-22-08 12:46 thats absolutely true , ferritin levels will also be increased in anemia of chronic disease . what do you think is the relationship of methionine with regards to anemia
#20
Re: deep truths 4 usmlefever3 - 11-22-08 14:45 well regarding the reaction where homocysteine converts to methionine to transfer methyl from B12.......i guess if there is increase in methionine then this reaction will get disturbed.....so may be again megaloblastic anaemia
#21
Re: deep truths 4 bingousmle - 11-23-08 00:06 yeah you got the link... so in megaloblastic anemia both due to deficiency of vit B12 and folate there will be decreased levels of methionine and an increased level of homocysteine.
#22
Re: deep truths 4 usmlefever3 - 11-23-08 13:41 what is the mechanism of megaloblastic anaemia in phenytoin
#23
Re: deep truths 4 bingousmle - 11-24-08 08:51 phenytoin decreases the intestinal absorption of folic acid by inhibiting intestinal conjugases and thus causes megaloblastic anemias .
what disease states are the following cells found
burr cells, acanthocytes
#24
Re: deep truths 4 usmlefever3 - 11-26-08 04:58 burr cells in uraemia and acanthocytes in haemolytic anamia
#25
Re: deep truths 4 bingousmle - 11-26-08 06:02 yes , burr cells are indicative of renal disease ,in hemolytic anemia you may see schistocytes, acanthocytes are suggestive of liver / lipid abnormalities.
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