Peripheral Vascular Disease Flashcards
Cause
atherosclerosis (same RF)
intermittent claudication
(50%-70%) stenosis
- pain after walking a certain distance
- relieved by rest
- site= calf (femoral artery), buttock (iliac disease)
Pathphys for intermittent claudication
limited supply, demand > supply, anaerobic respiration - lactic acid build up
(like our pain just at a lower threshold)
Pathology for critical limb ischaemia
blood supply barely adequate at rest
- rest pain/nocturnal
- better when hanging from bed
Pain when you rest and woken up by shaking
Ulceration, gangrene
what does external iliac become and when?
becomes common femoral when crosses under inguinal ligament
what does the common femoral artery split into?
superficial and deep/profundus femoral arteries
when does the superficial femoral artery become the popliteal artery?
once its gone through adductor hiatus
what does the popliteal branch into? (3)
anterior tibial
posterior tibial
peroneal
Ix for critical limb ischaemia
color duplex USS - 1st line
CT angiography before surgery
ABPI
ABPI range for normal
1-1.2
ABPI range for PAD
0.5-0.9
ABPI for CLI
Mx for PAD or CLI
RF control
Surgical intervention: bypass, endarterectomy
for claudication: supervised exercise program
Pathology of acute limb ischaemia
different from CLI
THROMBUS in artery!
Presentation of Acute limb ischamia
6Ps
Pain, pulsenessless, peripheries cold, pallor, paralysis, parasthesia
