Varicose veins are swollen, twisted veins that can be seen just under the surface of the skin. Weakened valves and veins can increase the blood pressure in a person’s legs, which can cause varicose veins. Show Our veins have a one-way valve that keeps blood flowing from the legs up toward the heart. When these valves do not work as they should, blood collects in the legs and pressure builds. The veins become weak, large, and twisted. Varicose veins most  When veins bulge or become twisted, as they do when someone is affected by varicose veins, blood flow through them can become sluggish or slow. This can cause superficial blood clots, also known as superficial thrombophlebitis, phlebitis, or superficial venous thrombosis. The superficial clots that can occur with varicose veins can cause leg swelling, redness, pain, and tenderness in the affected limb or around the affected vein.1 Unlike deep vein thrombosis (DVT) or blood clots that form in the deep veins of the legs, the superficial clots associated with varicose veins do not usually travel to the lungs or cause a pulmonary embolism (PE) or blood clot in the lung.2 DVT/PE is a serious condition and does not usually occur with varicose veins, because varicose veins affect the veins close to the surface of the skin.3 However, with severe varicose veins, there can be a risk that a DVT might occur.4 Your healthcare provider can help you assess your risk for deep vein thrombosis. Risk Factors for Varicose VeinsVaricose veins may run in families or may be an inherited condition, and other factors that may increase pressure in the veins and cause or contribute to the formation of varicose veins5 include:
Symptoms of Varicose VeinsThe symptoms of varicose veins can vary from person to person, but the most common symptoms of varicose veins6 may include:
Speak to your healthcare provider if you have symptoms of varicose veins. ResourcesClick on the links below to read more about varicose veins: Patient Information, Varicose Veins, Cleveland Clinic Patient Information, Vascular Medicine, Society for Vascular Medicine Patient Information, Vascular Web, Society of Vascular Surgery Patient Information, Varicose Veins, Merck Manual References
Click here to learn how you can support the mission of the National Blood Clot Alliance. Which blood or blood product poses the greatest risk of infectious disease transmission?Studies indicate that newly positive CMV-IgG donors pose the highest risk of transmitting CMV as their blood contains the highest levels of CMV DNA [45].
Which electrolyte is primarily responsible for the cell membrane potential?Sodium, which is an osmotically active cation, is one of the most important electrolytes in the extracellular fluid. It is responsible for maintaining the extracellular fluid volume, and also for regulation of the membrane potential of cells.
Which IV solution shifts fluid into the intracellular space?Hypotonic solutions have a lower concentration, or tonicity, of solutes and have an osomolality equal to or less than 250 mOsm/L. The infusion of hypotonic solutions lowers the osmolality within the vascular space and causes fluid to shift to the intracellular and interstitial space.
Which electrolyte has the highest concentration in the extracellular fluid?The most abundant electrolyte in extracellular fluid is sodium. The body regulates sodium levels to control the movement of water into and out of the extracellular space due to osmosis.
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In adults, the use of which vein increases the patients risk of embolism and phlebitis?
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