Gastroenteritis
You have devoured your favorite shrimp salad at dinnertime. In a few hours you might be racked by stomach cramps and diarrhea. You will probably experience vomiting and low grade fever too. This is a classic case of gastroenteritis - a condition where the intestines are inflamed due to bacterial or viral infection. Gastroenteritis infection can also be caused due to food poisoning, food allergy, intestinal parasites, viral infection, medication or food consumed while you are traveling. Gastroenteritis can affect anyone but it is usually more severe in infants, the elderly and immunosuppressed people. Gastroenteritis in children can be serious if left unattended. It is the leading cause of death among children worldwide.
Viral and Bacterial Gastroenteritis
Viral gastroenteritis is caused by a viral infection that affects the stomach and intestines. In fact, viral gastroenteritis is one of the most common ailments in the U.S. A person can contract this viral gastroenteritis infection from contaminated food or drinking water. Within a few hours, the first symptoms are noticed. While viral gastroenteritis infections usually clear up without medicines within a few days, bacterial gastroenteritis needs to be treated. Rotavirus is the most common cause for viral gastroenteritis. It affects infants and young children and can surface as an outbreak during some seasons. Rotavirus can also affect other age groups. The Norwalk Virus is another cause of infectious gastroenteritis. It is common in school-going children. Viral gastroenteritis is usually treated with self care measures. Bacterial gastroenteritis infection can be caused by Salmonella, Escherichia coli (E coli), Campylobacter or Shigella. These bacteria can be found in poulty, eggs or meat. Once they enter the body, they multiply and produce toxins. After a few hours of eating, symptoms of bacterial gastroenteritis appear.A stool assay can help in identifying the specific agent for the gastroenteritis and aid treatment.
Treating Gastroenteritis
Usually the reaction to gastroenteritis infections hinges on your immune system’s ability to resist the infection. A person suffering from gastroenteritis will probably feel nauseous and experienced a bloated feeling. Abdominal cramps and mild to severe watery stools may be noticed for a couple of days. Severe cases of gastroenteritis can result in dehydration. Signs of dehydration to look out for are dry skin, excessive thirst and absense of urination for many hours. If a person suffering from gastroenteritis experiences severe abdominal pain or high fever or blood in the stools, consult a health professional at once. With little children, it is essential to give them clear fluids to replace lost fluids due to vomitting and diarrhea. Infants can be breast fed normally. Gastroenteritis can be very serious in infants. If you notice dry mouth, sunken eyes and irritability, consult a doctor immediately.
Drink plenty of water and fluids to restore fluid and salt requirements of the body
Avoid milk and dairy products
Take adequate rest till symptoms persist
Consume bland foods and avoid spicy foods, fried foods and alcohol
Consume electrolyte solutions
Avoid aspirin and ibuprofen as they irritate the gastrointestinal system
Avoid sharing food and water and utensils with others for fear of spreading the infection
Fecal occult blood test
Fecal occult blood test (FOBT) aids in detecting any occult blood in the stool. This test is part of any colorectal cancer screening process. New flushable reagent pads allow you to conduct this test either at home or a laboratory. About 2 -3 stool samples are taken on different days to check for fecal occult blood. While FOBT can detect presence of blood in the stool, it can pinpoint the cause. Fecal occult blood can occur due to colon cancer, gastritis, hemorrhoids, fissures, inflammatory bowel disease, peptic ulcer or esophagitis. Fecal occult blood test must not be conducted if the person is suffering from colitis, diarrhea, constipation or diverticulitis. Women who are menstruating or persons with active anal bleeding due to fissures or hemorrhoids must not take the FOBT. Avoid eating beets, grapefruit, poulty, red meat cooked rare, turnips or horseradish about 48 hours prior to FOBT. If any blood is detected during fecal occult blood test, further diagnostic tests are conducted to check the causes.
Colonoscopy
Colonoscopy allows the doctor to look into the interior lining of the large intestine. Through this procedure, the doctor is able to detect inflamed tissue, abnormal growths, polyps, tumors and ulcers. Early signs of cancer in the colon and the rectum can also be detected through colonoscopy. This procedure is also used to study unexplained changes in bowel habits, to evaluate symptoms of abdominal pain, rectal bleeding and sudden weight loss. The colonoscope is a thin flexible instrument whose length ranges from 48 inches to 72 inches. A small video camera is attached to the colonoscope so that photographic, electronic or videotaped images of the large intestine can be taken. Colonoscope is used to view the entire colon as well as a small portion of the lower small intestine.
The colon should be completely empty for colonoscopy to be thorough and safe. The liquid diet should be clear of any food colorings. It should be fat free. The colonoscope is gradually inserted into the rectum and slowly guided into the colon. The scope transmits an image of the inside of the colon onto a video screen so that the doctor can carefully examine the lining of the colon. The scope blows air into the colon and inflates it so that the doctor has a better view of the colon. During the procedure, the doctor is able to remove abnormal growths like polyp in the colon.
Colonoscopy aids the doctor to remove most polyps without abdominal surgery.
Colonoscopy is more accurate than a routine x ray to detect polyps, tumors, ulcers and cancers at early stage.
Colonoscopy is done most often to investigate and find the cause of blood in the stool, abdominal pain and diarrhea.
Certain patients with previous history of polyps or colon cancer, patients with family history of particular malignancies, colon problems are advised to have periodic colonoscopies because they are at greater risk of polyps or colon cancer.
Virtual colonoscopy: Here the technique that is adopted uses a CAT scan to construct virtual images of the colon. These images are similar to the views of the colon obtained by direct observation through colonoscopy. However, virtual colonoscopy cannot find small polyps which are less than 5 mm in size. These can be seen by the traditional colonoscopy. Virtual colonoscopy is not as accurate as colonoscopy in finding cancers or pre-malignant lesions that are not protruding. Virtual colonoscopy also cannot remove polyps.
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