Vascular Surgery Flashcards
What factors contribute to thrombosis?
(think Virchow’s triad)
- hypercoagulability
- stasis
- endothelial injury
What is the physiology behind rest pain?
nerves become ischemic causing pain at rest
what is neurogenic claudication? what does it feel like?
constant burning pain that often follows dermatomes of the LE
-most commonly due to a back problem (lumbar spinal stenosis)
what pressure of TcPO2 indicates good probability of healing of an extremity?
40mmHg
what 2 measurements are the diagnostics of choice to determine if an extremity will heal?
TcPO2
and absolute toe pressure
what is the minimum absolute toe pressure that determines if an extremity will heal?
> 45 (from Dr. Mahoney)
>30mm Hg (from Dr. Stern)
what is CREST syndrome?
calcinosis, Raynauad’s, esophageal dysmotility, sclerodactyly, telangiectasia
what tests can you order to rule out or in HITT?
PF-4 (platelet factor 4)
HIT- ab
SRA (serotonin releasing factor assay) >20% is diagnostic
what is a common sign seen with HITT?
decreased platelet
what is the mortality rate of someone who presents with critical limb ischemia?
50% mortality in 1-2 years
what are the 3 E’s of venous disease treatment?
elevation
exercise
elastic compression
what are the first signs of lidocaine toxicity?
sensory disturbances
a thromboembolism to toes and fingers are exacerbated by what?
cold weather (due to vasoconstriction of small arterioles)
what is the #1 thing you should think about with a patient who presents with cyanotic toes that are cyanotic with elevation?
aneursym
what is the biggest risk factor for aneurysm?
smoking