OnlineMedEd: Gastroenterology - "Malabsorbtion" Flashcards

1
Q

What nutrients are absorbed by the duodenum?

A
  • Iron

* Calcium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What nutrients are absorbed in the terminal ileum?

A
  • Fat
  • Bile salts
  • Fat-soluble vitamins
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Explain the utility of D-xylose.

A

The first test to evaluate malabsorption is the fat challenge (a 100-gram bolus of fat to assess for steatorrhea). Once that comes back positive, you need to determine whether the problem is with the enzymes or with the intestinal epithelium. D-xylose is already broken down to its absorbable unit, so if that is not absorbed then you know it is a problem with the epithelium and not the enzymes.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Celiac causes malabsorption by ____________.

A

blunting the intestinal villi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Rash and malabsorptive symptoms?

A

Dermatitis herpetiformis and celiac sprue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Why can’t you have a person with suspected celiac eliminate gluten as a diagnostic tool?

A

It can take up to four months of gluten avoidance to return to baseline.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

___________ deficiency can cause nystagmus.

A

Vitamin E

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Review the constellation of symptoms seen in Whipple’s disease.

A
  • Malabsorption
  • Arthralgia
  • Cardiac involvement (not sure what)
  • Lymphadenopathy
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How is Whipple’s treated?

A

•Bactrim

or

• Doxycycline

How well did you know this?
1
Not at all
2
3
4
5
Perfectly