INDICATION OF PULMONARY MECHANICAL ENERGY DURING SPONTANEOUS BREATHING

Abstract

Registered spirogram and transpulmonary pressure in spontaneous breathing in 10 healthy volunteers and in 10 patients with community-acquired pneumonia. For the first time the work inside the lung-a source of mechanical energy (RVI) was measured by the method of interruption of the air on 0.2 with inhalation and exhalation in the middle of the respiratory cycle. Alveolar pressure exceeding the total nonelastic pressure on the inhale and exhale through self-mechanical activity of the lungs. RVI was determined by the area of a triangle, where one cathetus were breathing capacity and the amount of excess air pressure. The total work of breathing (TWB) was measured by the square of the chart pressurevolume. Total breathing (Рt) was determined by adding TWB and RVI. RVI average was 29.6 (25.0– 43.3)% to Рt in healthy individuals and to 19.4 (0–55.1) % of patients with community-acquired pneumonia. In 2 patients, RVI has not been determined, and 2 were increased significantly. The nature of variations RVI in healthy people and change its degree of severity of community-acquired pneumonia remain unknown

Keywords

• транспульмональное давление, работа дыхания, работа внутрилегочного источникаеханической энергии, суммарная работа внелегочного и внутрилегочного источника механической энергии