General characteristics of duodenal drainage

The duodenal drainage fluid consists of pancreatic exocrine fluid, bile, duodenal secretion and gastric juice. The specimen can be taken by drainage and divided into four tubes: D, A, B, and C. D tube is duodenal juice; tube A is bile duct fluid; tube B is gallbladder fluid (bile); C tube is hepatobiliary fluid (bile). Through examination, you can understand the bile secretion, bile duct status and pancreatic function, which is helpful for the diagnosis of hepatobiliary diseases (such as inflammation, stones, parasites, tumors) and bile duct obstruction. It is also helpful to understand the exocrine function of the pancreas. Basic Information Specialist classification: Digestive examination classification: biochemical examination Applicable gender: whether men and women apply fasting: fasting Tips: Check the day before dinner for fasting and ban drinking. Normal value The observation of the characteristics of the duodenal drainage fluid is very important. It should be noted that the bile in each part is clearly segmented. The amount, color, traits and specific gravity of the bile should be noted. Light yellow or golden yellow liquid is bile duct bile (A bile), 10 ~ 20ml, transparent or slightly viscous, pH 7.0, specific gravity 1.009 ~ 1.013. The brown liquid is gallbladder bile (B bile), 30-60 ml, transparent or thick, pH 6.8, specific gravity 1.026 to 1.032. The lemon yellow liquid is bile duct bile (C bile). When the amount of bile outflow is enough to check, the drainage can be terminated. Therefore, the amount is variable, transparent and slightly viscous, pH 7.4, and the specific gravity is 1.007~1.010. Clinical significance No bile suggests bile duct obstruction, seen in cholelithiasis, bile duct tumors. If only B-free fluid is seen in bile duct infarction, gallbladder contraction or gallbladder surgery. When B liquid is dark green or black, it is seen in the bile duct dilatation or infection. For example, before the use of magnesium sulfate, a large amount of B fluid, often due to relaxation of the Oddi sphincter, gallbladder dynamic function is too strong. Excreted bile is abnormally thick, seen in gallbladder effusion caused by cholelithiasis; bile is seen in chronic cholecystitis due to poor concentration. If the bile is turbid after adding sodium hydroxide solution, it is found in duodenal inflammation and infection; if mixed with blood, it is found in acute duodenitis and tumor. Precautions 1. Check the day before dinner for fasting and ban drinking. 2, duodenal drainage surgery should pay attention to routine aseptic operation. 3, duodenal drainage should be taken on an empty stomach to minimize the interference of gastric juice. In the fasting state, the double lumen tube is used, and the gastric juice and the duodenal drainage liquid can be separately taken to prevent the gastric juice from flowing into the duodenum as much as possible. Inspection process The same science test. Not suitable for the crowd Intubation contraindications, such as esophageal cancer, esophageal stricture, cirrhosis with esophageal varices, newly ulcer disease and blood, heart failure, severe hypertension and coronary heart disease, can affect the general trait test of duodenal drainage Therefore, it is not appropriate to do this test. Adverse reactions and risks Generally no harm.