Intestinal transit time measurement and stress measurement

The intestinal tract is a method of examining irritable bowel syndrome by practical measurement and pressure measurement. For example, if the lactulose is taken on an empty stomach, the digestive interval is different for different patients, resulting in heterogeneity of the mouth-blind passage time, so the lactulose should be taken at the same time as the test meal. It is required to stop taking anticholinergic drugs, calcium channel blockers, nitroglycerin sedatives and psychotropic drugs 48 hours before the examination. Basic Information Specialist classification: Digestive examination classification: other examinations Applicable gender: whether men and women apply fasting: not fasting Tips: Stop taking anticholinergic drugs, calcium channel blockers, nitroglycerin sedatives and psychotropic drugs 48 hours before the test. Normal value The food passes through the intestinal tract at normal times and the pressure in the small intestine is normal and stable. Clinical significance Abnormal results: The food passes through the intestine for a long or short period of time, and the pressure in the small intestine is large, which is irritable bowel syndrome. Need to check the crowd: irritable bowel syndrome. Precautions Forbidden before examination: Stop taking anticholinergic drugs, calcium channel blockers, nitroglycerin sedatives and psychotropic drugs 48 hours before the test. Taboo when checking 1. If the lactulose is taken on an empty stomach, the digestive phase is different for different patients at the time, resulting in heterogeneity of the mouth-blind passage time, so the lactulose should be taken at the same time as the test meal. 2. The ingredients of the test meal should be similar to the prescribed meal of the ordinary meal. 3. Intubation should pay attention to moderate. Inspection process (1) Intestinal transit time check: 1 Hydrogen breath test method: The principle is that sugars that cannot be absorbed in the small intestine, such as lactulose, are explained by bacterial fermentation in the colon, and hydrogen is exhaled through the lungs. Therefore, exhaled hydrogen is collected after oral administration of lactulose for a certain period of time (10-15 minutes). Determination of exhaled hydrogen concentration by gas sensitive chromatograph According to the change of exhaled gas and hydrogen concentration, the mouth-blind passage time is the peak when the respiratory hydrogen concentration is higher than 50% of the base value or higher than 4 to 10 ppm. Fructose until the peak time. 2 radionuclide scanning method: A. Small intestine transit time measurement: usually after 99mTC labeled test meal, count under gamma camera (nuclear scan of anterior and posterior position to correct the error), if one of the two radionuclides is used for gastric emptying One is used to measure the mouth-blind passage time, thereby estimating the passage time of the small intestine. B. Determination of colon transit time: The radioactive labeling liquid is filled into the cecum or the radionuclide capsules orally dislocated in the cecum, disintegrating to measure the filling of the colon and the passage time of each segment. (2) Pressure measurement: Intestinal pressure measurement: a pressure manifold or a catheter with a miniature pressure sensor is inserted into the duodenum through the stomach until the upper part of the jejunum (the guide wire can be inserted through the endoscope under the X-ray), and the intestinal digestive interval can be measured. Dynamic activity during the digestive period (shrinkage contraction amplitude and dynamic index). Not suitable for the crowd Not suitable for inspecting people: patients who are sensitive to radionuclides. Adverse reactions and risks Nothing.

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