Hemothorax means the presence of a significant amount of blood in the pleural cavity. In most cases, hemothorax arises from penetrating or non-penetrating ra neniya thorax. In rare instances, cart hemothorax may niknut during manipulations, such as percutaneous central venous through the subclavian or vnut rennyuyu jugular vein translyumbalnaya aortography . B of limiting cases hemothorax may be due to pulmonary embolism or rupture of an aortic aneurysm.
Blood can penetrate into the pleural cavity at a trauma -static damage to the chest wall, diaphragm, mediastinal or lung. Blood flowing into the pleural cavity, fast! Ro coagulates, but probably as a result of cardiac contraction scheny and lungs during breathing movements can occur defibrination blood clot. As in the case of empyema, blood sucking of hemothorax occurs early .
If bloody pleural fluid is obtained during diagnostic thoracocentesis , its hematocrit should be determined. Hour then there are cases when the pleural fluid looks very bloody, and its hematocrit does not exceed 5%. Can ut verzhdat that the patient hemothorax if pleural hematocrit of the liquid is not less than 50% hematocrit PERIPHERAL symmetric with blood.