Venous and Lymphatic Disease Flashcards
What are varicose veins a sign of?
Superficial venous disease
What does chronic limb insufficiency affect?
Deep venous system
Pathology of varicose veins
Damaged valves so backflow of blood
Tortous dilated superfifical veins
Sites of varicose veins
Long saphenous 80-87%
Short saphenous 21-30%
Alone 13%
Combined 21%
Which gender gets varicose veins more?
F > M
Common things found in a history of varicose veins
Occupation Pregnancies (twins, big babies) Previous DVT / major trauma FH IVDU
Presentation of varicose veins
Cosmesis Localised or general discomfort in leg Nocturnal cramps Swelling Acute haemorrhage Superficial thrombophlebitis Pruritus Skin changes e.g. bruising, eczema, spider veins
Definition of pruritus
Itching
Presentation of chronic venous insufficiency
Ankle oedema Telangectasia Venous eczema Haemoseridin pigmentation Hypopigmentation "atrophie blanche" Lipdermatosclerosis Venous ulceration
Pathology of chronic venous insufficiency
Venous HTN
Venous enlargement and stasis
Imbalance of stirling forces and fluid exudate
High AVP
Pathological causes of chronic venous insufficiency
Failure of the calf muscle pump
- superficial venous reflux
- deep venous reflux
- venous obstruction
- neuromuscular
- obesity
- inactivity
Definition of leg ulcer
A breach of the skin between the knee and the ankle joint, present for over 4 weeks
Differential diagnosis of leg ulcers
Venous (80%) Arterial (20%) DM RA Vasculitis CT disease Severe arterial disease
Investigations of leg ulcer
ABPI
Duplex
Investigations for varicose veins
Examination
Duplex
Indications for intervention in varicose veins
Symptoms Superficial thrombophlebitis Signs of chronic venous insufficiency Bleeding Cosmetic Anxiety that disease may progress
Treatment of varicose veins
Surgery Injection (sclerotherapy) Laser Heat Compression Conservative
Contraindications for superficial venous surgery
Previous CVT
Arterial insufficiency
Co morbidity
Morbid obesity
Complications of venous surgery for VV
Minor haemorrhage Thrombophlebtitis Haematoma Wound problems Severe pain Sural/saphenous nerves can be damaged Damage to deep veins A + V + DVT
How does laser treatment help varicose veins?
Vein scars and fibroses until it is occluded
How does compression help varicose veins?
Creating artificial mechanical pressure to drain the vein.
Minimally invasive Txs of main trunk varicosities
Foam sclerotherapy (chemical reaction with endothelium) Endovenous laser ablation (EVLA) Radiofrequency ablation
Treatment of chronic venous insuffiency
Multi layer, granulated, elastic, high grade compression therapy (exclude arterial disease)
Non adherent dressings
Exercise (calf muscle pump)
Causes of lymphodema
Primary - congenital - praecox (age 9-25) - tarda (over 35) Secondary - malignancy - surgery - radiotherapy - infection
What is Klippel-Trenaunay syndrome?
Mixture of venous and lymphatic disease
Management of lymphedema
Elevation and manual drainage
Compression
What kind of valves are found in the veins?
Bicuspid
Function of perforator veins
Join superficial and deep veins
What keeps the blood flowing around the veins in the leg?
Calf muscle pump
What is the calf muscle pump made out of?
3 different muscle groups
What may affect the calf muscle pump to work properly?
Fixed flexion of ankle
Immobilisation
What is post thrombotic syndrome?
Valves in the veins being damaged after a clot
What generally tends to be a trend with failing valves?
Genetic
Pathology of venous ulcers
Unhealthy blood becomes stuck and components effect the microcirculation and cause ischaemia (fibrin cuff hypothesis)
Why do women get varicose veins more than men?
Hormonal influences
- pregnancy
- puberty
- menopause
What is haemoseridin staining?
Brown staining of skin caused by bilirubin, due to venous disease
Is haemoseridin staining permanent?
Yes
What is lipodermatosclerosis?
Tissue becomes hard and solid
What is the scaling system for varicose veins?
CEAP
What are the CEAP stages for varicose veins?
C0 - no visible or palpable signs of venous disease C1 - Telangectasias or reticular veins C2 - Varicose veins C3 - Oedema C4a - pigmentation or eczema C4b - Lipadermatosclerosis or atrophie blanche C5 - Healed venous ulcer C6 - Active venous ulcer
When should treatment be offered for varicose veins?
> C4, i.e. if skin changes
Which circulation does ABPI look at?
Arterial
What does ABPI look at?
Systolic pressure brachial vs ankle
(dorsalis pedis + posterior tibial)
Highest systolic / highest brachial
What should the ABPI be?
0.8 - 1.3
Triphasic
What ABPI indicates ischaemia?
< 0.3
What is a duplex?
USS + colour
What does a duplex show?
Direction of blood
What does a doppler show?
Speed of blood
What is looked at when assessing venous ulcers?
Wound size (area, volume, method) Wound edge (punched out (arterial), sloping, undermining, surrounding tissue) Wound bed (granulation, hypergranulation, presence of slough) Pain assessment (neuropathic vs nociceptive)
What is slough?
Fibrous material that adheres to wounds
Gold standard treatment of venous ulcers
Compression
What % of venous ulcers will heal with compression at 6 months?
70%