6/14/13 a (RTA, MI localization) Flashcards Preview

STEP II > 6/14/13 a (RTA, MI localization) > Flashcards

Flashcards in 6/14/13 a (RTA, MI localization) Deck (24):
1

What is the pathophysiological defect in RTA type 2?

inability to reabsorb bicarb in proximal tubule

2

Is the urine acidic or basic in RTA type 2 (after a little while)? Why?

acidic; body runs out of bicarb

3

What is the diagnostic test for RTA type 2?

give bicarb

4

What is the result of giving bicarb to a person who has RTA type 2?

urine becomes basic and blood remains acidotic

5

What are the clinical features of RTA type 2?

osteomalacia/rickets

6

How does RTA type 2 cause osteomalacia?

acidotic urine frees Ca+ from bones

7

What is the Tx for RTA type 2?

bicarb and thiazide

8

What is the pathophysiological defect in RTA type 4?

aldo deficiency

9

What lab abnormality distinguishes RTA type 4 from 1 and 2?

hi K+

10

What is the Tx for RTA type 4?

fludrocortisone

11

Why is the anion gap normal in all forms of RTA?

hi serum Cl-

12

A normal anion gap metabolic acidosis must either be RTA or _______.

diarrhea

13

What should be done for a recurrent chalazion?

istologic exam to rule out malignancy

14

What 2 kinds of cancer can masquerade as a recurrent chalazion (obstruction of the meibomian gland)?

meibomian gland carcinoma and BCC

15

What kind of pancreatic endocrine tumor causes watery diarrhea and hypokalemia?

VIPoma

16

What medication can help control the diarrhea of a VIPoma?

octreotide

17

What pancreatic endocrine tumor presents w/ necrotizing dermatitis, wt. los, anemai, and persistent hyperglycemia?

glucagonoma

18

Pts w/ carcinoid syndrome are most at risk of developing what vitamin deficiency?

niacin

19

Why does carcinoid syndrome cause niacin deficiency?

tryptophan is diverted to serotonin synthesis

20

ST depression in leads V1 and V2 suggest an MI in what region?

posterior wall

21

Which coronary vessel is usu occluded in inf. wall MI?

RCA

22

What vessel aside from the RCA could cause an nferior wall MI?

LCX

23

ST elevation in leads V1-V4 indicates an MI in which region?

septal

24

What vessel is occluded in an anterior septal myocardial infarction?

LAD