5/29/13 a Flashcards
The isolated finding of short QT interval is most commonly associated w/ what?
hypercalcemia
At what heart rate should chest compressions be started in the neonate?
<60
Electrical alternans and sinus tachycardia are highly specific for what condition?
pericardial tamponade
How does electrical alternans appear on the EKG?
varying heights and axes of QRS complexes
What is the mechanism of electrical alternans?
heart swinging back and forth w/in pericardial sac
What arrhythmia is procainamide especially good for treating?
WPW pre-excitation syndrome
Yellowish-white patches of retinal opacification and retinal hemorrhages in an AIDS pt w/ CD4 count below 50.
CMV retinitis
Benign cotton-wool spots in the retina of an HIV pt that remit spontaneously.
HIV retinopathy
What is the first-line treatment for advanced cancer pts w/ no appetite?
progestin
Asymptomatic liver cyst w/ eggshell calcification on CT.
Hydatid cyst
What is the gold std for Dx of avascular necrosis of the femoral head?
MRI
Which immunosuppresants, sommonly used in kidney transplant, are the the calcineurin inhibitors?
cyclosporin and tacrolimus (and other -olimus, e.g. sirolimus)
What cells do cyclosporine, tacrolimus, and mycophenolate inhibit?
T-cells
Which immunosuppressant causes nephrotoxicity, hirsutism, anf gum hyperplasia?
cyclosporin
Axothioprine is a purine analog that is enzymatically converted to _______.
6-mercaptopurine
