Vascular

Question 1

ABI Values

Answer 1

Normal 1-1.2
Arterial disease <0.9
Critical ischaemia <0.5

Question 2

Rutherford Acute Ischaemia

Answer 2

I - viable
IIA - threatened, salvageable if promptly treated
IIB- threatened, salvageable if immediately treated
III - irreversible

Question 3

Mechanism thrombolysis

Answer 3

Converts plasminogen to plasmin which degrades fibrin

Question 4

Contraindications thrombolysis

Answer 4

Absolute - active bleeding
Relative
- major abdominal surgery 2 weeks
- craniotomy, TIA, stroke 2 months
- known intracerebral tumour, aneurysm, AVM
- trauma, non compressible vessel puncture 10 days
- bleeding diathesis
- pregnancy

Question 5

Virchow’s triad

Answer 5

Hypercoagubility
Turbulent flow
Endothelial damage