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Step I USMLE images
Started by Zuhal
Can someone explain subclavian steal briefly? I don't see it in first aid anywhere, but it sounds important haha.
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damn lmao.
instead of sincerely asking for help, i should have said something like "Great job, now explain the pathogenesis"
That would have definitely worked
Proximally blocked carotid receives retrogade collateral circulation distal to blockage via vertebral a., "steals" perfusion from brain
thanks!
this actually helps me understand wikipedias description
" retrograde (reversed) flow of blood in the vertebral artery or the internal thoracic artery, due to a proximal stenosis (narrowing) and/or occlusion of the subclavian artery. The arm may be supplied by blood flowing in a retrograde direction down the vertebral artery at the expense of the vertebrobasilar circulation. This is called the subclavian steal."
disease name?
disease name?
Count Von Recklinghausen's?
yup, or otherwise known as NSF1.
anybody know what's the function of the protein the gene encodes for...
no idea, but I'd like to know. 👍
what's the pathology here?
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you the got the inciting cause but be more specific about where in the bones they occur?
ok, 1 more before I start pounding FA this morning:
little history: 1 year old who didn't receive any vaccinations. sick over past few days, had to be admitted to the NICU yesterday:
little history: 1 year old who didn't receive any vaccinations. sick over past few days, had to be admitted to the NICU yesterday:
I have they are always metaphyseal(would I think would be distal end of diaphysis)? sorry for being nitpicky
good luck with 12!!!
that's the spirit ya ole chap...
both NF1 and 2 code for tumor suppressor genes by the names of neurofibromin & merlin, respectively.
ok, 1 more before I start pounding FA this morning:
little history: 1 year old who didn't receive any vaccinations. sick over past few days, had to be admitted to the NICU yesterday:
looking at the 2nd pic looks like the adrenals are shot...im guessing waterhouse...baby has petechiae all over the body...
feel like im wrong, because haven't seen a question about waterhouse in a 1year old...more so a kid in the early double digits stage (ie 10, 11, 12, etc etc)
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you're right with the cause. I should have said the kid was 2 or 3, making the lack of immunization important. what typically causes FW syndrome?
lesion at letter C would cause what:
multiple names for this...so not looking for something specific...🙂
I have no idea, locked in syndrome?
neisseria meningitidis...basically causes collapse of the whole adrenal system. my statement about petechiae is actually incorrect, lol...forgot that G- bacteria, especially neisseria causes DIC...so that's probably what the kid is going through in the picture...
C is pointing to CN 6...one of the 3 CN's located in the middle of the brainstem. the other two are CN3 and CN12. lesions to CN 6 usually lead to strabismus...where're you can't ABduct the eye. this case, the patient's left eye wouldn't be able to ABduct when asked to
exactly, strong work Jonari
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treatment for this adult patient?
EDTA, dimercaprol, etc? (lead poisoning, burton's lines)
yup...& for kids you can give succimer...now
so the rest of us can get a score like yours....
okay
Now that I no longer need to take my mind off of an impending step 1 score, I promise not to answer any more questions in this thread. But if I'm bored, I might come back and contribute (questions). good luck everyone 👍okay
contribute with pictures & questions, but try to refrain from answering...if you don't mind...😳
yeah, that's what I meant
okay
Congrats on your awesome score Suncrusher!
okay
contribute!
No h/o of any penile ulcers or long extremities lol
dx?
any hints? actually nvm lets wait for other ppl to have a go at it
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That's it. Below the renal artery but above the aortic bifurcation
tricky ?...if you hadn't given the 2nd clues...knee jerk would've been aortic dissection for sure...but i guess would also have to look for "tearing pain radiating to the back"
any clue on my image? ok...it's associated with turner's...should get it now
