Veins are responsible for transporting blood from the body back to heart where it is loaded with oxygen in the lungs before being distributed to the rest of the body again. Veins on the legs have the toughest job because they must push the blood against the force of gravity and the pressure of body weight in an upstream motion. To assist in this task, veins have one-way valves that prevent the blood from flowing backward. When there are problems with the valves it causes blood to stay in the leg and cause the vein to swell.
There are two kinds of enlarged veins: varicose awes and spider veins. Varicose veins are dark blue or purplish in cnlnur and they bulge above the skin’s surface. Spider veins are much smaller and they look like red or blue spider which lie close to the surface of the skin. Forty-five-year-old Sarah developed varicose veins on her thighs many years ago, after giving birth to her third child. Initially, she ignored it, thinking that it was nothing more than an aesthetic hindrance. Shortly after, Sarah experienced cramps, especially at night and both legs were constantly aching, tired and swollen. She also felt conscious of its appearance whenever she wears a skirt to work.
Varicose veins are common among the general population – 35% of women and 20% of men over 20 years old are diagnosed with this condition. Factors that increase the risk of developing varicose veins, obesity and wearingbof high heels or tight garments. To prevent the development of varicose veins, one should exercise regularly to keep the blood flowing. Women should also avoid wearing high heels shoes (not more than 3-4 cm high) and tight clothing that wraps around legs.
To alleviate the discomfort, people with varicose veins can try raising both legs above their chest to facilitate the blood flow or wearing compression stockings. Clinical treatments for varicose veins are also available to improve the cosmetic appearance and reduce the aching, swelling, and other serious problems such as blood clots and ulcers. In Sarah’s case, the many doctors she had consulted offered surgery as an option to remove the varicose veins on her legs. However, this is an invasive procedure which requires an anesthesia and hospitalization.
50. Which of the following is NOT included in the causes of varicose veins?
A. Delivering a baby
B. Constant aching of both legs
C. Wearing high heels shoes
D. Sitting or standing for hours
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