OA Perfusion: PVD Flashcards
PVD
Peripheral Vascular Disease
Peripheral vascular system
veins and arteries not in the heart and brain
peripheral arteries
supply oxygenated blood to the body
peripheral veins
lead deoxygenated blood from the capillaries in the extremities back to the heart.
Types of circulation disorders
- functional
- organic
Functional Circulation disorders
- short term effects
- spasms
- triggered by cold temperature, emotional stress, vibrating machinery, smoking
Organic Circulation disorders
- structural changes
- inflammation
- tissue damage
- PAD
PAD
peripheral artery disease
% of men over 50 that experience intermittent claudication of PVD
5%
% of women over 50 that experience intermittent claudication of PVD
2.5%
Manifestations of PVD
- diseases of blood vessels outside the heart and brain
- altered blood flow
- lower extremities most frequently, then kidneys and arms
- leads to “ischemia”
- cost of PVD overwhelming and expected to rise
Intermittent Claudication of PVD
- usual reason to seek treatment
- location depends upon area of occlusion
- experience dull cramping pain, burning, muscle discomfort or pain
- subside with rest
- distances walked become shorter
- eventually may occur at rest
Resting (ischemic) pain
- numbness or burning
- may awaken patients
- distal portion of extremities
- may result in limb loss
- collateral circulation
collateral circulation
growth/enlargement of additional blood vessels
Non-invasive Diagnostics
- ABI: Ankle Brachial Index
- CT Scan & MRI
- Doppler Ultrasound
- Duplex Imaging
Diagnostic Testing
- Peripheral Angiography
- Venography
ABI
Ankle Brachial Index
- differences between arms and legs
- normal=1
- mild obstr= 0.8 - 0.95
- moderate= 0.4 - 0.8
- severe=
Doppler Ultrasound
- reflected sound waves
- evaluates blood flow
- reveals: DVT and Plaque
Peripheral Angiography
- injection of contrast medium (iodine based)
- series of x-rays
- groin puncture site
- bed rest 4-6 hrs
complications of peripheral angiography
- bleeding
- infection
- contrast reaction
- clot formation
- artery damage
- hematoma
venography
- injection of contrast medium
- consent required
- used to locate thrombi, tumors, inflammation
venography is used to locate..
- thrombi
- tumors
- inflammation
Arteriosclerosis
thickening, loss of elasticity, and calcification of arterial walls
-most common chronic arterial disorder
Atherosclerosis
form of arteriosclerosis
-deposits of fat and fibrin obstruct and harden the arteries
When does atherosclerosis develop into PVD or PAD
when the hardened and obstructed arteries impair the blood supply to peripheral tissues, particularly the lower extremities
Pulse sites
- Temporal
- Carotid
- Brachial
- Radial
- Ulnar
- Femoral
- Popliteal
- Posterior Tibial
- Dorsalis Pedis
Pulse Checks
- Popliteal
- Pedal
Pedal Pulses
- Dosalis Pedis
- Posterior Tibial
3+ pulse
full and bounding
2+ pulse
normal
1+ pulse
diminished and weak
Absent
no pulse
-provider must be contacted after multiple attempts, RN double check
D pulse
found on doppler
Extremity Assessment
- Color
- Temp
- Cap Refill
- Ulceration
- Edema
Cap Refill
3 seconds: delayed