Pneumomediastinography

Pneumomediastinography, or Pneumogastrography, is a method of X-ray examination of the pleural cavities to determine intrapleural pressure. So-called diagnostic pleural punctures are used. Similar to pneumomediastinummetry, the study is carried out in a special sterile room, where the patient is isolated from the outside world, recording data under the influence of his own respiratory, cardiac, and pleural (artificial) respiration. The first method reproduces changes in intra-abdominal pressure detected by pneumography and pneumogastrography; the second - inhalation and exhalation in the lateral projection. The method is based on the change caused by the introduction of air, observed in the photographs. In this case, a gas-containing zone appears in the diaphragm, indicating pneumoperitoneum. At later stages, signs of air appear in the pleura and pericardium. In most patients, the pneumopericardium is shallow. Sometimes the air looks like a strip located between the layers of the pleura. Transpneumoperitoneocardiogram leads to signs of pneumopleurisy. Pneumography and pneumoanimation make it possible to determine (at various indicators of intra-abdominal pressure) the volume and depth of pneumoperitium, pneumocompartment, and pneumonychium. Currently, pneumography and its varieties are used only as a historical diagnostic method, occasionally accompanied by the demonstration of similar pneumograms.

Pneumomediastinagraphy is a diagnostic research method that is used to assess the condition of the mediastinum and lungs as a whole, as well as to determine the localization of pathological changes in these structures. The technique involves using air to fill the mediastinal cavity, which allows visualization of tissue structure and detection of possible abnormalities. At