6/17/13 Flashcards Preview

STEP II > 6/17/13 > Flashcards

Flashcards in 6/17/13 Deck (19):
1

What is the SCREWENING test for HIV?

ELISA

2

Once "potato nodes" are seen on x-ray in a pt suspected of sarcoid, what is the best next step to confirm the dx?

bronchoscopy and biopsy

3

What is the Tx for symptomatic sarcoidosis?

steroids

4

Although most pts. w/ IBD present in their 20s or 30s, there is a _______ with a second peak at age 60.

bimodal distribution

5

What anti-arrhythmic medication would prolong the heart rate as the heart rate increased?

flecainide

6

What phenomenon explains flecainide's ability to prolong the QRS complex as the pulse increases?

"use-dependence"

7

What is the best next step for a small skin lesion suspicious for melanoma?

excisional biopsy w/ narrow borders

8

What should be done if an excised skin lesion is confirmed as melanoma?

excision of 1 cm borders; if depth greater than 1mm, also sentinal lymph nodes

9

Gaze abnormalities, vertigo, limb ataxia, sensory loss, and Horner's syndrome represent a _______ infarct.

lateral medullary (Wallenberg syndrome)

10

What are the 3 components of Horner's syndrome again?

ptosis, miosis, and anhidrosis

11

What pulmonary infection of the immunocompromised may present on CT scan as pulmmonary nodules with a "halo sign" or an "air ccrescent"?

Histoplasmosis

12

What is the next step when Hx./PE suggest prostatitis?

urine sample

13

In addition to saline and insulin, what needs to be given to most pts experiencing hyperosmolar hyperglycemic state (HONK)?

K+

14

_______ is characterized by a hypochromic, microcytic anemia w/ elevated RBC count and a normal RDW. The MCV is generally very low.

Thalassemia

15

What is the RBC ct in thalassemia?

elevated

16

What is the RDW in thalassemia?

normal

17

What is the best medication to give to treat ethylene glycol or methanol poisoning?

fomepizole

18

What is the mechanism of action of fomepizole?

inhibits alcohol dehydrogenase

19

What infection that typically affects AIDS pts w/ CD4+ cts <100 causes a secretory diarrhea and malabsorption?

Cryptosporidium