USMLE World 1/28/15 Flashcards
What drug is indicated in BPH + htn?
alpha-1 blocker (e.g. prazosin, doxazosin)
Why are alpha-1 blockers also good for diabetics?
↓ insulin resistance, ↓LDL, ↑HDL
What therapy (beyond optimal medical mgmt) of CHF is recommended for pts w/ EF<35% w/ LBBB?
cardiac resynchronization therapy (biventricular pacing)
A patient started on androgens may have to _______ their synthroid dose because androgens _______.
decrease; decrease serum thyroid-binding globulin
A patient started on glucocorticoids may have to _______ their synthroid dose because glucocorticoids _______.
decrease; decrease circulating TBG
What is the appropriate imaging study for avascular necrosis of the femoral head?
MRI hip
Sjogren’s syndrome increases the risk of what cancer?
B-cell lymphoma
Vertigo, dysarthria, diplopi, and numbness in a pt w/ risk factors for emboli, thrombi, or arterial dissection.
vertebrobasilar insufficiency
Name a cause of hypervitaminosis D.
granulomatous disease
Aside from dextrose, what should be given in sulfonylurea (e.g. glyburide) overdose?
octreotide
Pts w/ typical cholecystitis Sx who can’t have surgery should be given _______.
ursodeoxycholic acid (UDCA)
What is the purpose of cholecystokinin-stimulated cholescintigraphy?
evaluate for functional gallbladder disease (in pt’s w/ typical biliary colic, but no stones)
Pt w/ choledocholithiasis confirmed or suspected by US should under go _______.
ERCP
What syndrome causes decreased sensation over anterolateral thigh without weakness or DTR abnormalities.
meralgia paresthetica
What is the cause of meralgia paresthetica?
entrapment of lateral femoral cutaneous nerve
What is the conservative Tx of meralgia paresthetica?
weight loss and avoidance of tight-fitting garments
What is the cutoff time from onset of ischemic stroke symptoms to fibrinolytic therapy?
4 hrs
Htn up to a BP of ___ is generally permitted in pts w/ ischemic stroke who do not receive thrombolytic therapy.
220/120
Is full dose heparin used to treat ischemic stroke? Why?
No! Risk of hemorrhagic transformation.
Why does octreotide help in sulfonylurea overdose?
It inhibits insulin release from the pancreas. (Opposite effect of sulfonylureas.)
