Week 9 - Lesson 2 (Part 3) Flashcards
What is responsible for characteristic brown skin pigmentation?
Metabolic breakdown of hemoglobin
What does not help with DVT?
Increased hydrostatic pressure in deep venous system
What develops spontaneously or as a result of trauma?
Ulcerations
- inflammatory reaction in the tissue
What indicates an obstruction of the flow in the leg veins?
Continuous non- phasic flow
Why do varicose veins develop?
Due to extra pressure in veins largely due to absent or incompetent valves
What does it mean the longer there is flow during valsalva?
The more incompetent the valves are
What indicates valvular imcompetence?
Flow reverses with onset of Valsalva’s maneuver
- remains reversed until Valsalva’s maneuver is released
What does flow reversal indicate?
Severe incompetence of venous valves
- valves are not closing tightly or at all
What should normally occur with valsalva maneuver?
Flow should cease
What is chronic venous insufficiency a result of?
Recanalized vein post DVT
What happens with chronic venous insufficiency? (2)
- Pathologic dilation of the vein occurs
2. Congenital absence of competent valves or be avalvular
What is the results of chronic venous insufficiency? (4)
- Varicosed veins
- Edema
- Skin changes
- Increased venous hydrostatic pressure
How can you check for reflux? (3)
- Spectral Doppler
- Colour flow Doppler
- Gray scale
What happens to stuck valves during respiration?
They will not move
What can great saphenous veins be harvested for?
To be used as a graft in the event of arterial disease instead of a man-made variety
What are the best options for superficial system as grafts? (2)
- Great and Small Saphenous
- legs - Cephalic and Basilic veins
- arms
When is superficial venous thrombosis assessed?
This system is usually only examined when signs of thrombosis are apparent
What are signs of a thrombosis? (5)
- Tenderness and pain
- Warm skin
- Redness or inflammation of the skin
- Palpable cord may be apparent in subcutaneous tissues
- Hardening of the vein
Where is there the only risk for a pulmonary embolism?
When thrombus is near the attachment to the deep system or extending into it
Primary varicose veins
Abnormally dilated and tortuous superficial veins in the absence of deep venous disease
- history of DVT is rare
What does primary varicose veins a result of?
Valvular incompetence at SFJ
Secondary varicose veins
Associated with obstruction DVT or incompetence of the deep venous system valves
Why is superficial venous thrombosis considered dangerous?
Because it can branch into the deep vein and become worrisome
