Allergic colitis is a condition in infants that results from an immune response triggered by proteins in the diet. This immune response leads to a reaction in the lining of the gastrointestinal tract. Cow and soy milk proteins, as well as those in breast milk are the most common dietary proteins that cause this reaction in infants. Typically, babies with allergic colitis appear healthy and have normal, soft stools that contain flecks or streaks of blood. This small amount of bleeding does not usually cause problems; rarely babies may develop a low blood count (anemia). When other symptoms develop, such as fussiness (especially fussiness while passing stool), diarrhea, vomiting and failure to thrive, treatment is needed. The usual onset of allergic colitis is in the first 2 months of life but it also occurs in infants from 1 day to 6 months of age. Continue reading
Adenosine thallium scan: A method of examining the heart to obtain information about the blood supply to the heart muscle. Special cameras take a series of pictures of the heart. Radioactive thallium is injected into the bloodstream and serves as a tracer. The tracer attaches to certain cells and makes them visible to the special camera. The tracer attaches to the muscle cells of the heart so the imaging camera can take pictures of the heart muscles. If an area of the heart does not receive an adequate flow of blood, the cells in the underserved area do not receive as much tracer and it appears as a darker area on the picture taken by the camera. Continue reading
The glucose tolerance test is a laboratory method to check how the body breaks down (metabolizes) sugar.
How the Test is Performed
The most common glucose tolerance test is the oral glucose tolerance test (OGTT). You cannot eat or drink anything after midnight before the test. For the test, you will be asked to drink a liquid containing a certain amount of glucose. Your blood will be taken before you do this, and again every 30 to 60 minutes after you drink the solution. The test takes up to 3 hours. Continue reading
The World Health Organization (WHO) has defined the term hypertension as, “a persistent elevation of the systolic blood pressure above 140 mmHg and diastolic blood pressure above 90 mmHg.” The blood vessel type that is being measured in this case is the arterial pressure. When systemic arterial blood pressure is elevated, this indicates that the heart is working harder than it should to be able to pump the blood throughout the whole body. The normal value of blood pressure is 120/80 mmHg in adults.
The kidney functions as the body’s main excretory organ. It eliminates the body’s metabolic wastes. Urine is formed in the kidneys, stored in the urinary bladder then excreted in the urethra. The normal color of urine ranges from pale yellow to deep amber. A colorless urine may indicate that a person may have been drinking too much water. Urine pigment is due to the urobilin or urochrome—a pigment that is thought to give the urine its color. A normal color of the urine tells a lot about the kidney and liver function of a person. Continue reading