Peripheral Arterial Disease- Lecture 3 Flashcards
capabilities of laser doppler
- determine the healing potential of ulcer, would or amputation
- can be utilized in calcified arteries, edema and check pedal flow in patients with diabetes
laser doppler
- measures the characteristics of the microvascular blood volume in capillary beds of the skin***
- uses optical light waves
- skin perfusion pressure (SPP)
SPP laser doppler of _________ is good healilng
________ is marginal healing
________ less likely ulcers will heal
greater than 40mmHg
30-40 mmHg
less than 30 mmHg
vasculogenic impotence affects as many as ________ american men
_____ men have a varying degree of erectile dysfunction
one million, 30 million
causes of of vasculogenic impotence
hormonal imbalance
psychological neurogenic dysfunction
cavernosal venous leak
arterial insufficiency
-organic or psychogenic impotence***
what size cuff is used for PBI (penile Brachial Index)
2.5 cm x 9.0 cm
calcified plaque of the tunica
Peyronie’s disease***
non-imaging interpretation - PBI
Normal…
marginal…
abnormal…
normal PBI - greater than 0.75-1.0
marginal - 0.65-0.74
abnormal - less than 0.65
what PBI is consistent with vascular impotence?
reduced pressure highly suggestive of more proximal arterial disease
less than 0.65
penile flow should go from _____ resistance to ____ post injection
high, low
when testing for impotence, dorsal veins should _____ increase, which could suggest venous leak
normal EDV is less than _____ cm/sec
abnormal is greater than _____ cm/sec
not
5
6
- little flow in cavernosa
- arterioles in the corpora covernosa are constricted
- high resistance flow
flaccid state
blood flow begins in _________ to __________ to________ (which is the main arterial supply to rectile tissue) to dorsal arterty
hypogastric, internal pudenal, cavernosal
physiology of erection
- relaxation of vasoconstriction within cavernosal arteriole
- blood flow increases into the corpora as resistance decreases (low)
- increase in arterial inflow, decrease in venous outflow
- blood is trapped, inflow and outflow temporarily ceases
- tumescence occurs
in impotnece testing, the ________ arteries are assessed by PSV and EDV
after ____ min, repeat measurements in _____ min increments
cavenous
1-2
5
normal diameter of cavernous arteries should _______ post-injection
normal range greater than _____ cm/sec
marginal _____ cm/sec
reduced less than _____ cm/sec
increase
30-35
25-29
25
is PPG a true plethysmography?
NO
is PVR a true plethysmography?
yes
___ is most often used to evaluate the digits and penile vasculature
PPG
plethysmography is an _______ assessment and can’t discriminate between major arteries and collaterals
indirect
PVR:
VPR:
PCR:
pulse volume recording
volume pulse recording
pulse contour recording