18. Ischemia

Question 1

Definition of ischemia

Answer 1

inadequately low blood supply to tissue/organ

Question 2

What can be described as general ischemia?

Answer 2

Anemia, hypovolemia

Question 3

Reasons of pathological ischaemia:

Answer 3

• compression (from outside)
• obturation (from inside)
• vasoneurotic disrturbance (bc of NS)

Question 4

Ischaemia compressiva - ? Reasons?

Answer 4

Ischaemia due to compression from outside -› reduced blood flow

• Tympany (bloating) of some organs (e.g. rumen in cows and caecum in horses and rabbits)
• Tumors

Question 5

Ischaemia obturativa - ?

Answer 5

Ischaemia due to obturation from inside.

• Thrombus
• Embolus

Question 6

Vasoneurotic ischaemia. Reasons.

Answer 6

Angiospasm (CNS, cold, chemicals)

Question 7

What tissues are the most sensitive to ischaemia? Why?

Answer 7

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