Under manometry one understands the pressure measurement in different regions of the GIT. It is performed by inserting a catheter with pressure transducers through the mouth or anus in the lumen of the organ to be examined. The manometry is typically used to evaluate motility disorders in patients where organic diseases have been ruled out by other studies. The manometry is in the esophagus, in the duodenum, applied in the sphincter of Oddi and rectum. Apart from minor discomfort complications are rare. Patients must stay sober on Study at midnight. Esophageal This method is used for evaluation of patients with dysphagia, heartburn, regurgitation, and chest pain. It measures the pressure in the upper and lower esophageal sphincter and the effectiveness and coordination of propulsive movements and shows pathological contractions. The manometry can be used for the diagnosis of esophageal dysmotility-like achalasia, diffuse spasm, scleroderma and hypo- and hypertension of the lower esophageal sphincter. It is also useful for the evaluation of esophageal function and anatomy (eg. As hiatal hernias) from certain therapeutic interventions (eg. As antireflux surgery, pneumatic dilation for achalasia). Recent high-resolution manometry is often combined with impedance test to evaluate simultaneously the bolus passage through the esophagus during the test. Gastroduodenal manometry In this method, probes are placed in the gastric antrum, duodenum, and proximal jejunum. The pressure is monitored both in the fasted state as after ingestion for 5-24 h. This method is commonly used in patients who show symptoms suspicious for motility, however, have a normal gastric emptying test failed or not respond to therapy. It may be helpful to determine whether the patient’s symptoms or motility disorders are the result of muscle disease (abnormal contraction amplitude but normal pattern) or a nerve disease (irregular contraction pattern but normal amplitude). Barostat This is a pressure measuring device that is placed in the stomach to determine the Magenakkommodation. The device consists of a plastic balloon and an electronic controller that introduces as much air into the balloon that a constant pressure is maintained. This unit is v. a. used for research purposes to detect an altered visceral sensation of pain, particularly for the gastrointestinal diseases. Anorectal manometry This method uses a pressure sensor is placed in the anus in order to assess the anorectal sphincter and rectal irritation sensation in patients with urinary incontinence or constipation. It can be helpful in the diagnosis of Hirschsprung’s disease and in biofeedback training with fecal incontinence. The Barostatballon is filled during the test to evaluate the rectal irritation sensation and accommodation.