ثلثين الـ spinal cord يغذيهن شريان واحد هو الـ anterior spinal
ثلث الـ spinal cord تغذيه شرايين ثنين هنّ الـ posterior spinal

الثلثين هاي هنّ الـ anterior المسؤولات عن الـ motor function وبما أنّ شريان واحد هو اللي يوصل الدم لهذا الجزء من الحبل الشوكي، معناها أنّه معرّض للـ ischemia أكثر من الثلث الـ posterior

An irony in the design of the human body

Almost all patients with LEMS are diagnosed with cancer within 4 years of making the diagnosis of LEMS. The most common type of cancer is SCLC (Small-Cell Lung Cancer).

Myasthenia gravis has a bimodal age-related onset, with onset in the second or third decades more common in women and onset in the sixth or seventh decades more common in men.

Tinea manuum

From 'The Sick Rose'

Never treat megaloblastic anemia with folate before making sure the patient doesn't have B12 deficiency

U actually treat both

Till you're fairly sure which is which

With a complete rotator cuff tear, after the pain subsides, the clinical picture becomes unmistakable: active abduction is impossible and attempting it produces a characteristic shrug; but passive abduction is full and once the arm has been lifted above a right angle the patient can keep it up by using the deltoid (the ‘abduction paradox’); when they lower it sideways it suddenly drops (the ‘drop arm sign’).

CPP: Cerebral Perfusion Pressure
MAP: Mean Arterial Pressure
ICP: IntraCranial Pressure

أكو شي إسمه الـ perfusion pressure اللي هو ضغط الدم اللي يحتاجه كل عضو حتى يشتغل بشكل فعال.
الدماغ يحتاج CPP بين 50 و 150 ملم زئبقي حتى يشتغل. هذا الـ CPP يعتمد على عاملين ذكرتهن بالمعادلة، وهو مهم كلش لأن إذا يقل، معناها رح تصير ischemia.