Venous.2. Varicose veins Flashcards
(172 cards)
Varicose veins of the Lower Limbs
- Definition
- Incidence
- Etiology
- MORPHOLOGICAL PICTURE
- CLINICAL PICTURE
- INVESTIGATIONS
- TREATMENT
Definition of Varicose veins of the Lower Limbs
Dilated, elongated & tortuous veins affecting the superficial venous system of the L.L.
Incidence of Varicose veins of the Lower Limbs
5 - 10%
Etiology of Varicose veins of the Lower Limbs
- Primary Varicose Veins
2. Secondary Varicose Veins
Etiology of Primary Varicose Veins in Etiology of Varicose veins of the Lower Limbs
- Unknown
- Theories
- Aggravating factors
Theories in Etiology of Primary Varicose Veins in Etiology of Varicose veins of the Lower Limbs
- Significance
2. List
Significance of Theories in Etiology of Primary Varicose Veins in Etiology of Varicose veins of the Lower Limbs
neither of which satisfactorily explains all cases
List of Theories in Etiology of Primary Varicose Veins in Etiology of Varicose veins of the Lower Limbs
- The valvular incompetence theory
2. The weak wall theory
The valvular incompetence theory in List of Theories in Etiology of Primary Varicose Veins in Etiology of Varicose veins of the Lower Limbs
Postulates that incompetence of valves either in the main saphenous trunks or in the.communicating veins are responsible for the condition
The weak wall theory in List of Theories in Etiology of Primary Varicose Veins in Etiology of Varicose veins of the Lower Limbs
- Assumes an inherited weakness of the vein wall, producing venous dilatation even with normal pressures.
- Secondary valvular incompetence will occur
Aggravating factors in Etiology of Primary Varicose Veins in Etiology of Varicose veins of the Lower Limbs
- Female sex. The condition is commoner in females.
- High parity.
- Marked obesity.
- estrogens intake e.g. contraceptive pills
- Occupations requiring prolonged standing.
Etiology of Secondary Varicose Veins in Etiology of Varicose veins of the Lower Limbs
- Pregnancy : Most common cause
- Deep venous thrombosis
- Pelvic tumours
- Arterio-venous fistula
pathogenesis of Pregnancy in Etiology of Secondary Varicose Veins in Etiology of Varicose veins of the Lower Limbs
Oestrogen & progesterone cause smooth muscle vein wall relaxation
Deep venous thrombosis in Etiology of Secondary Varicose Veins in Etiology of Varicose veins of the Lower Limbs
- Pathogenesis
2. Timing
Pathogenesis of Deep venous thrombosis in Etiology of Secondary Varicose Veins in Etiology of Varicose veins of the Lower Limbs
Recanalization of the thrombosed deep veins leaves the valves of the deep system & perforating veins incompetent leading to reflux of blood.
Timing of Deep venous thrombosis in Etiology of Secondary Varicose Veins in Etiology of Varicose veins of the Lower Limbs
Occurs 2-5 years after DVT.
MORPHOLOGICAL PICTURE of Varicose veins of the Lower Limbs
- Large vein varicosities :
- Reticular varicosities :
- Spider varicosities
Large vein varicosities in MORPHOLOGICAL PICTURE of Varicose veins of the Lower Limbs
- Site
2. Diameter
Site of Large vein varicosities in MORPHOLOGICAL PICTURE of Varicose veins of the Lower Limbs
Affecting the LSV or SSV themselves or one of their main tributaries.
Diameter of Large vein varicosities in MORPHOLOGICAL PICTURE of Varicose veins of the Lower Limbs
Large in diameter : 5-15 mm.
Reticular varicosities in MORPHOLOGICAL PICTURE of Varicose veins of the Lower Limbs
- Site
2. Diameter
Site of Reticular varicosities in MORPHOLOGICAL PICTURE of Varicose veins of the Lower Limbs
Lying immediately beneath the skin.
Diameter of Reticular varicosities in MORPHOLOGICAL PICTURE of Varicose veins of the Lower Limbs
1-5 mm in diameter
Alternative name for Spider varicosities in MORPHOLOGICAL PICTURE of Varicose veins of the Lower Limbs
Telangiectasia