Fegan’s Compression Sclerotherapy for Varicose Veins by S. Sarin (auth.), Shukri K. Shami MB BS, FRCS(Ed), MS, PDF

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Additional resources for Fegan’s Compression Sclerotherapy for Varicose Veins

Sample text

The compression applied should be approximately 75% at the upper calf and 50% at the thigh compared with the compression applied at the ankle. Types of Compression Compression is usually applied continuously to the leg as graduated static compression using stockings or bandages. Alternatively, intermittent pneumatic compression (IPC) may be used. 39 40 Fegan's Compression Sclerotherapy for Varicose Veins Bandages Bandages are preferred following sclerotherapy and venous surgery and for open leg ulcers, particularly where soiling through dressings is frequent.

Thermal drift of the plethysmograph may be encountered as the patient's warmth heats the air within the cuff, causing an increase in pressure. Strain-gauge Plethysmography This method has been used for several years in the assessment of patients with venous disease and is employed to quantify the changes in volume of the calf that occur during exercise or compression of the limb with cuffs. Originally made of mercury in a rubber tube, the transducer is now made from a mercury-filled silastic tube.

As this pressure rises towards 10 cm H20, the elliptical profile becomes progressively more circular and the resistance to blood flow decreases. Until the cross-section becomes circular, the vein can accommodate large volume changes without a significant increase in distending pressure. e. the pressure volume curve has reached its plateau. Maximum distensibility occurs at approximately 4 mm Hg and is estimated to be 100 ml/mm Hg for the human venous system. This is over 50 times greater than the compliance of the arterial system.

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