5/29/13 a Flashcards Preview

STEP II > 5/29/13 a > Flashcards

Flashcards in 5/29/13 a Deck (18):
1

The isolated finding of short QT interval is most commonly associated w/ what?

hypercalcemia

2

At what heart rate should chest compressions be started in the neonate?

<60

3

Electrical alternans and sinus tachycardia are highly specific for what condition?

pericardial tamponade

4

How does electrical alternans appear on the EKG?

varying heights and axes of QRS complexes

5

What is the mechanism of electrical alternans?

heart swinging back and forth w/in pericardial sac

6

What arrhythmia is procainamide especially good for treating?

WPW pre-excitation syndrome

7

Yellowish-white patches of retinal opacification and retinal hemorrhages in an AIDS pt w/ CD4 count below 50.

CMV retinitis

8

Benign cotton-wool spots in the retina of an HIV pt that remit spontaneously.

HIV retinopathy

9

What is the first-line treatment for advanced cancer pts w/ no appetite?

progestin

10

Asymptomatic liver cyst w/ eggshell calcification on CT.

Hydatid cyst

11

What is the gold std for Dx of avascular necrosis of the femoral head?

MRI

12

Which immunosuppresants, sommonly used in kidney transplant, are the the calcineurin inhibitors?

cyclosporin and tacrolimus (and other -olimus, e.g. sirolimus)

13

What cells do cyclosporine, tacrolimus, and mycophenolate inhibit?

T-cells

14

Which immunosuppressant causes nephrotoxicity, hirsutism, anf gum hyperplasia?

cyclosporin

15

Axothioprine is a purine analog that is enzymatically converted to _______.

6-mercaptopurine

16

Azothioprine and mycophenolate work primarily by inhibiting _______.

Purine synthesis

17

What is the major toxicity of Mycophenolate?

Marrow suppression

18

What are the major toxicities of azothioprine?

dose=related diarrhea, leukopenia, and hepatotoxicity