1. Anatomy: Venous Flashcards
Anastomotic Superficial Veins
Drainage
THIS vs THAT; Superficial vs Deep:
There is a superficial venous system and a deep venous system.
: The dural sinuses have accessory drainage pathways
the good and the bad
Good = help regulate temp, equalized pressure
Bad = they allow sinus infection, inflammation = venous thrombosis
Vein of Labbe, and the Anastomotic
Vein of Trolard
Since these dudes share drainage o f the same territory, as one gets large the
other get small.
Vein o f Labbe
Large draining vein, connecting the superficial middle vein and the
transverse sinus
Vein o f Trolard
Msaller vein connecting the superficial middle vein and
sagittal sinus
Basal veins o f Rosenthal
Deep veins that passes lateral to the midbrain through the ambient cistern and drains into the = vein of Galen.
Their course is similar to the PCA
Vein of Galen
Big vein (“great”) formed by the union of the two internal cerebral veins
Classic location of venous gas
Cavernous sinus
if large enough = Orbital veins, superficial temporal, frontal sinus and petrosal sinus
Venous gas.
Why does this happen?
Peripheral (or central IV) had some air in the tubing.
That’s right, you can blame it on the
nurse (which is always satisfying). “Nurse Induced Retrograde Venous Air Embolus ”
haha
Venous gas
Significance?
Don’t mean shit. takes 48 hours to tp go away
Tlie Concha Bullosa
common variant where the middle concha
is pneumatized
No consequence unless its fucking huge = obstructive symtpoms
Tx: Functional endoscopic sinus surgery (FESS)
