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    Statistics about Down Syndrome (701 words)

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    Each year, three thousand to five thousand people are diagnosed with Down Syndrome in the United States. It is found in approximately one out of one thousand all live births. (Nadel,37). Down syndrome occurs when there is an abnormality in chromosome 21.

    Most people with Down Syndrome (approximately ninety-five percent) has an extra 21 chromosome. Instead of the normal number of forty-six chromosomes in each cell, the individual with Down Syndrome has forty-seven chromosomes. This condition is called trisomy 21. (Pueschel,6) . Down Syndrome is a combination of birth defects including some degree of physical abnormalities, musculoskeletal disorders, and Granted, individuals with Down Syndrome have distinct physical characteristics. Generally they are more similar to the average person in the community than they are different.

    The physical features are important to the physician in making the clinical diagnosis. Not every child with Down Syndrome has all the characteristics; some may only have a few, and others may show most of the signs of Down Syndrome. Some of the physical features in children with Down Syndrome include flattening of the back of the head, slanting of the eyelids, small skin folds at the inner corner of the eyes, depressed nasal bridge, slightly smaller ears, small mouth, decreased muscle tone, loose ligaments, and small hands and feet. About fifty percent of all children have one line across the palm, and there is often a gap between the first and second toes (Pueschel,240). The physical features observed in children with Down Syndrome usuallydo not cause any disability in the child.

    Moreover, there are many health problems associated with Down Syndrome. Sixty to eighty percent of children with Down Syndrome have hearing deficits. (Pueschel,235). If there is a significant hearing loss, the child should be seen by an ear, nose and throat specialist. Forty to forty-five percent of children with Down Syndrome have congenital heart disease (Marino,63). Many of these children will have to undergo Intestinal abnormalities also occur at a higher frequency in children with Down Syndrome.

    For example, blockages of the esophagus, small bowel, and at the anus are not uncommon in infants with Down Syndrome. These may need to be surgically corrected at once in order to have a normal functioning intestinal tract. Children with Down Syndrome often have more eye problems than other children who do not have this chromosome disorder. For example, three percent of infants with Down Syndrome have cataracts. (Pueschel,49) They need to be removed surgically.

    Other eye problems such as cross-eye, near-sightedness, far-sightedness and other eye conditions are frequently observed in children with Down Syndrome. Another concern relates to nutritional aspects. Some children with Down Syndrome, in particular those with severe heart disease often fail to thrive in infancy. On the other hand, obesity is often noted during adolescence and early adulthood. Maintaining an appropriate diet can prevent these conditions. It is important for individuals with Down Syndrome who skeletal problems have also been noted to be more common in children with Down Syndrome to get special help, including patients with kneecap subluxation, hip dislocation, and atlantoaxial instability.

    The latter condition occurs when the first two neck bones are not well aligned because of the presence of loose ligaments. Most of these people, however, do not have any symptoms, and only one to two percent of patients with Down Syndrome have a serious neck problem that requires surgery(Pueschel,217). Furthermore, The thyroid gland sits at the base of the front of the neck and makes thyroid hormone from iodide, thyroglobulin and tyrosine. This results in the production of thyroxine (T4), which is a prohormone and the actual thyroid hormone, T3. Both T3 and T4 are secreted by the thyroid into the blood stream. Hypothyroidism is the most common problem for individuals with Down Syndrome.

    Hypothyroidism is when the thyroid cannot produce enough thyroid hormone. This can be present at birth (congenital) or may be acquired at any age. Every state in the US does a routine screen on all newborns for hypothyroidism. In newborns and infants with Down Syndrome, the most common reason for hypothyroidism is that the thyroid did not form correctly in the fetus (Pueschel, 220).In acquired hypothyroidism, the most common reasons in toddlers and older children with Down Syndrome .

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