Brain Edema

Question 1

How many types of cerebral edema ?

Answer 1

4 types ?
1- vasogenic edema
2- cellular or cytotoxic edema
3- interstitial edema
4- osmotic edema

Question 2

What us the vasogenic edema and where it’s happened?

Answer 2

• disruption of blood brain barrier with ions and proteins move freely to extravascular tissue (space) ~> osmotic draw of fluid into interstitial space .

Ex : peritumor edema 😫

Question 3

What is the cellular edema , and where it can happened ?

Answer 3

• within minutes of insult/injury
• cell lack of hemostatic mechanisms ~> sodium enter the cell freely ~> fluid ~> edema
  (( Na/K pump Failure )) 🫧🩵
• ex:
• tramatic brain injury
• stroke

Question 4

What is the interstitial edema ? And where it’s gonna happened?

Answer 4

It is outflow of CSF from VENTRICLES to interstitial area of the brain

-ex :
* hydrocephalus
* meningitis

Question 5

What is the osmotic edema ? And where it’s gonna happened?

Answer 5

Dearrangement affecting osmolarity ~> pull water from plasma to tissue

Ex :
* hyponatremia
* DKA