Esophagography (from the Greek. oisophagos - esophagus, tonos - voltage and grapho - write; synonym: esophagomanometry, esophagomanometry) - check the pressure in the esophagus.
Esophagography spend a thin probe, the distal end of which ended freely or thin-walled rubber cylinder, enter into the esophagus and proximal connect with recording equipment (device megagraf-42, balloon technique - capsules Marea or float-gauge system with an account on Kinograf and others). Typically use two or three probes. During registration the pressure of the patient is asked not to swallow and not move, and probe slowly with constant speed extract. However write a profile of the pressure in the esophagus, or esophagogram. Simultaneously with esophagocoloplasty register breathing and swallowing patient, often with the help of special manzhetok worn on his chest and neck. These data are needed to decrypt the pressure curve in the esophagus.
In a healthy person, pressure in the esophagus weakly negative with fluctuations during inhalation and exhalation within 6 mm Register pressure fluctuations caused by the pulsation of the heart and the aorta. In the field of pharyngeal-esophageal and esophageal-gastric junction pressure is increased, the so - called upper and lower zones of high pressure (Fig. 1). The lower area of high pressure is created tonic tension of the muscles of the distal esophagus has a length of 3-4 cm and crossed aperture approximately in the middle. The level of the diaphragm on the curve corresponds to the point where positive respiratory teeth, registered at the location of the sensor below the diaphragm, change their direction on the negative when moving the sensor into the chest cavity (Fig. 2).
The largest is esophagography has to identify the so-called axial, or moving, hernia hiatal. What is happening in this disease moving esophago-gastric connection and adjacent sections of the stomach into the chest cavity method esophagography easily determined primarily by the appropriate offset the lower zone of high pressure. When paraesophageal hernia on esophagogram no changes are observed.
If the damage is cardiac sphincter in the result of intervention or as a result of the pathological process and the lower area of high pressure disappears. When cancer or cicatricial stenosis of the esophagus in the field narrowing usually determined by a pressure increase. Better it is revealed at check-balloon method esophagography. Other diseases of the esophagus change esophagocoloplasty less typical.

Fig. 1. Recording of pressure in the esophagus: 1 - the upper and lower zones of high pressure (a and b), reduction of the esophagus (in); 2 - pneumogram; 3 - registration swallowing.
Fig. 2. Esophagogram esophageal-gastric passage: I - healthy person; II - in case of insufficiency of the cardia; III - if the hernia hiatal. and the lower area of high pressure; - reduction of the esophagus; in the heart, pulsation; Mr. hernial SAC; d pneumogram; e - the respiratory waves.