arterial diseases, venous diseases, lymphedema Flashcards
PAD
- atherosclerosis most common cause
- imbalance of supply and demand -> ischemia in peripheral arteries and sx
risk factors for PAD
- smoking*
- HTN*
- diabetes*
- hyperlipidemia*
- metabolic syndrome*
- age > 70
- usually men > women
- family hx
at risk population for PAD
- age > 70
- age 50-60 with hx of smoking or diabetes
- age 40-49 with diabetes and at least one other risk factors for atherosclerosis
- intermittent claudication or ischemic rest pain
- abnormal LE pulse eam
- known atherosclerosis
sx of PAD
- may be asymptomatic
- intermittent claudication*
- nonhealing wounds or gangrene
- extremity pain, atypical or diffuse extremity pain
- erectile dysfunction*
common places for intermittent claudication
- butt
- hip
- thigh
- calf
- foot
PE findings for PAD
- smooth, shiney skin without hair
- cool skin, pallor, cyanosis, mottling
- ulcers, gangrene
- dependent rubor
- decreased or absent distal pulses
- bruits
- buerger test
diagnosis of PAD
- ABI, exs ABI of <0.9
- segmental pressures, toe pressures
- arterial duplex
- CTA, MRA, angiography
classification of PAD
- wifi classification- risk of limb amputation at 1 year
- wound, ischemia, and foot infection
treatment for PAD
- conservative care
- medical management
- surgery
conservative tx for PAD
- risk factor modification
- smoking cessation
- consistent mod exercise routine
medical management for PAD
- ASA
- statins
- cilostazole- increases exs tolerance
indications for surgery in PAD
- disabling claudication
- ischemic rest pain
- ulcerations, gangrene
surgical options for PAD
- stent placement and angiography
- enarterectomy
- open bypass procedures
- amputation
what is the TASC classification
- determines if PAD lesions are candidates for percutaneous revascularization
- A lesions- short stenosis
- D lesions- diffuse disease and chronic occlusions
- A and B best for percutaneous revasc
when to refer PAD to vascular surgery
- progressive sx
- short distance claudication
- rest pain
- ulcers or nonhealing
subclavian steal syndrome
- L subclavian steals blood flow from posterior circulation -> neurologic sx
- unequal UE BP > 10-15 mmHg
- arm claudication
- arm or hand ischemia
- neurologic sx
dx of subclavian steal syndrome
- noninvasive eval of cerebrovascular and UE arterial circulation via doppler, duplex US, intracranial doppler
- MRA, CTA or angiography
treatment of subclavian steal syndrome
- intervention for sx or to maintain LIMA bypass
- medical therapy
- surgical therapy
etiology of acute limb ischemia/ occlusion
- progressive PAD
- arterial emboli
- arterial thrombus- usually at site of plaque
- aneurysm or thrombosis if bypass
- trauma
risk factors of acute limb ischemia/ occlusion
- a fib
- recent MI
- large vessel aneurysm
- aortic dissection
- arterial trauma
- DVT
symptoms of acute limb ischemia/ occlusion
- depends on time, location, and collateral vessels
- six P’s
- limb and life threatening ischemia d/t lactic acid build up and breakdown byproducts
- irreversible damage after 6 hours
6 P’s of acute limb ischemia/ occlusion
- pulselessness
- pain**
- poikilothemia
- pallor
- paresthesia
- paralysis
classification of arterial occlusion
- viable- no tissue damage
- marginally threatened- emergency
- immediately threatened- emergency
- irreversible- non-emergent, requires amputation
treatment of acute arterial occlusion
- anticoag- IV heparin
- thrombectomy/ embolectomy
- endovascular surgery
- surgical intervention
- thrombolytic therapy- catheter directed lysis
- post revasc- assess for source of thrombus**
blue toe syndrome
- small vessel occlusion
- usually embolic
- scattered petechiae, cyanosis of soles of feet or toes
- need to ID and treat embolic source
anatomic risk factors for venous thrombosis
- mae thurner syndrome
- inferior vena cava abnormalities