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The use of ultrasonography in a medical application was first used in the late 1940s in the United States. This use was soon followed in other countries with further research and development being carried out. The first report on Doppler ultrasound as a diagnostic tool for vascular disease was published in 1967–1968.
A duplex ultrasound (doppler ultrasonography and b-mode) can detect venous obstruction or valvular incompetence as the cause, and is used for planning venous ablation procedures, but it is not necessary in suspected venous insufficiency where surgical intervention is not indicated. [10] [6]
Unlike arterial ultrasonography, venous ultrasonography is carried out with the probe in a transversal position, (perpendicular to the vein axis), displaying cross-sections of the veins. [4] All collateral veins are better detected this way, including perforator veins, but of most importance is the detection of venous thrombosis.
Major surgery and trauma increase risk because of tissue factor from outside the vascular system entering the blood. [62] Minor injuries, [63] lower limb amputation, [64] hip fracture, and long bone fractures are also risks. [9] In orthopedic surgery, venous stasis can be temporarily provoked by a cessation of blood flow as part of the ...
Before any treatment of leg telangiectasia is considered, it is essential to have duplex ultrasonography, the test that has replaced Doppler ultrasound. The reason for this is that there is a clear association between leg telangiectasia and underlying venous reflux. [ 12 ]
Still, it is widely used in clinical practice, probably because of its historical role prior to the availability of more reliable diagnostic studies (such as a D-dimer titration or a Doppler ultrasound), as well the ease of eliciting it. [4] An elevated D-dimer in the elderly population has no predictive value for deep venous thrombosis.
Weakened Venous valves: these are crucial towards ensuring upward flow to the heart from the lower extremities. If weakened, they may fail to close properly which leads to backwards blood flow/blood pooling. This can lead to slower blood flow in the veins. [8] Ultrasonography-Doppler ultrasound
CHIVA method is a type of surgery used to treat varicose veins that occur as a result of long term venous insufficiency. [1] The term is a French acronym for Conservatrice Hémodynamique de l'Insuffisance Veineuse en Ambulatoire (ambulatory conservative hemodynamic treatment venous insufficiency).