These videos are designed for medical students studying for the USMLE step 1. Feel free to comment and suggest what you would like to see in the future, and I will do my best to fulfill those requests.
really good :) explained everything really well. Thanks! just missed Kernohan's notch...which is a false localizing sign of Uncal herniation. compression of contralateral cerebral crus causes ipsilateral hemiparesis. It affects the descending corticospinal fibres, which haven't decussated yet. so a patient will come in with "down and out" eyes, then next will have contralateral hemipareisis ....contralateral to the eyes, ipsilateral to the tumour or cause of compression.
I think Daniel Tabari is right! You seem to have made a mistake. Uncal Herniation: 1) Ipsilateral hemiplegia: compression of contralateral corticospinal fibers that have not yet decussated. 2) Ipsilateral "down and out gaze" due to compression of ipsilateral CN III, which never decussate. 3) contralateral hemianopsia with macular sparing due to compression of left posterior cerebral artery. please correct
" I KNOW FIRST HAND, ABOUT THIS!" HERNIATION OF THE BRAIN , IS TOO LATE!"" " MY GRANDSON, (13 YRS OLD) NOW HAS BRAIN DAMAGE BEYOND HELP!" "(DUE TO HIGH BRAIN PRESSURE OF 60!) " WAISTED TIME FOR AN MRI, NEXT MORNING!" " SEEMS LIKE THE DOCTOR'S USE THE MRI AS LAST RESOURCE!" WHY? " MRI'S SHOULD BE THE FIRST THING TO DO, NOT THE LAST!" " EVEN WHEN HE WAS COVERED ON GOOD MEDICAL INSURANCE!"
MRI isn't the last thing to do but it's not the first either because MRI cannot detect hemorrhage. CT is more sensitive for hemorrhages. If there's no hemorrhage found on CT then next step is MRI. Also, MRI is very "lesion-specific", so if there's no lesion in the brain at all then it's not just a waste of money (medical insurance doesn't matter) it's also a waste of resources and the patient is exposed to extra radiation. Edit: Also, patients with neurological symptoms are more likely to be suffering from CI than cancer or anything else so that's another important reason why CT is preferred over MRI since if the most likely cause is the actual cause of the symptoms than wasting time on MRI could cost a life.
1.The arrangement of orbital muscles is not correct. 2. falx cerebr is not a fissure, the fissure's name is medial longitudinal fissure (or cerebral fissure, or longitudinal fissure, or interhemispheric fissure). 3. There are more than 3 types of Cerebral Herniation. We'll appreciate if you'll update the video and re upload it again. Thank you
+Rami Dar it's not her duty. go find yourself. at least be appreciative when people take the time to educate you. No one's perfect including your professors and board review materials
Does Sup Oblique Lie Inferiorly ???? I watched couple of videos that you uploaded and its unfortunate you land up with wrong explanations. Do you think it is wise to share wrong information??? Are you doing any good???
