My 16 month old daughter had a sweat chloride test done and The number came back at 53. They say 40-60 is borderline. I was wondering if anyone out there had the same thing and what the outcome was. They are sending her to get more tests done on her lungs, but I am wondering if her number can still be high and not have cystic fibrosis. I am very scared I also have a 6 week old little girl and my 16 month has all the symptoms including the very salty taste to her skin. Can anyone tell me if this has happened to them and what advice they can offer me.

My Son had a positive sweat test for cystic fibrosis.?
My Son had a positive sweat test for cystic fibrosis. My son now has to have another sweat test done to confirm the results. What are the chances that it is a false positive? What if the test results are inconclusive?

Cystic fibrosis is a very serious disorder that is fatal if not treated properly. A defective gene causes thin body secretions, such as lung mucus, digestive juices, sweat and reproductive secretions, to become thick and sticky. Serious and life-threatening problems may arise due to this thickening. There is no permanent cure for cystic fibrosis yet, but symptomatic treatment is given.

When the lungs and airways are choked, the cystic fibrosis patient coughs and produces very thick sputum. He is short of breath and develops wheezing. Polyps may grow in the nasal passages. The frequency of sinus, chest infections, pneumonia and bronchitis increase.

As the digestive juices do not reach the intestine, due to blocked ducts from the pancreas and liver, the fats and protein are not digested. The stool is bulky, greasy and foul smelling. The cystic fibrosis patient may have excessive appetite but is undernourished and underweight, as the food is not digested properly for absorption. A trypsin test may indicate whether sufficient enzymes from the pancreas are available for digestion.

The sweat may taste salty. When we kiss a child with cystic fibrosis we can taste this excessive salt taste. To diagnose cystic fibrosis positively we measure this saltiness in sweat. Technicians coat an odorless chemical on a small area of the skin in the arm, and stimulate that area with electric current to produce copious sweat. This sweat should contain about 40 m mol/l in a normal person. Above 60 m mol/l of salt in a sweat test will confirm the diagnosis of cystic fibrosis. With cystic fibrosis patients the duct that connects the testes and vas deferens may get blocked. Most cystic fibrosis patients are sterile.

Treatment is mainly to ease the symptoms and lead a normal life in spite of the malady. Bronchodilators and mechanical vibrators keep the lungs and airways clear. Enzyme and vitamin supplements keep the digestive system near normal. With correct lifestyle management Americans are living to their 30s and 40s with cystic fibrosis.

By: Kent Pinkerton

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The Cystic Fibrosis Foundation created this informational video about the sweat test to inform parents about the procedure.

Cystic fibrosis is one of the most common genetic disorders. The genes on each chromosome control specific functions of the human body. The gene on chromosome 7 produces a protein called cystic fibrosis transmembrane regulator. Mutation in the DNA level of chromosome 7 leads to the absence of this protein which leads to cystic fibrosis.

Cystic fibrosis is a recessive disease. It means that both copies of the gene must be defective. An affected person will have abnormal cystic fibrosis transmembrane regulator gene on each chromosome 7. Therefore both biological parents must have an abnormal gene. One abnormal copy is inherited from each parent. A person with one normal gene and one abnormal gene is called a cystic fibrosis carrier. Cystic fibrosis carriers do not show any symptoms but they may pass the abnormal gene to their children. Therefore the parents can be either cystic fibrosis carriers or affected themselves.

Cystic fibrosis affects the production and function of cystic fibrosis transmembrane regulator. This disturbs the chloride transfer across cell membranes. As a result, chloride irons build up in the cells of the lungs and other organs. Water stays inside the cells to dilute the chloride and the normal secretions of the organs become thick. Mucus in the exocrine glands becomes thick and sticky. This results in blocks in the pancreas, lungs, liver and other glands. This block leads to cyst formation in glands. This results in cystic fibrosis. Cystic fibrosis causes frequent respiratory infections.

Diagnosis of cystic fibrosis is confirmed by a sweat test or DNA testing. Cystic fibrosis causes the sweat glands to secrete excessive salt. The most common symptoms of cystic fibrosis are coughing and chronic breathing difficulties. This causes repeated lung infections. The lungs and the digestive system are more affected by cystic fibrosis. The symptoms of cystic fibrosis include chronic cough, chest infection, small growth in nose, diabetes, weight loss, pancreatitis, and diarrhea. The treatment of cystic fibrosis includes oral or inhaled antibiotics, corticosteroid tablets, dietary vitamins, anti-asthma therapy and medication.

By: Kent Pinkerton

About the Author:

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