Possibilities of studying respiratory biomechanics on domestic pneumotachographs

Spirographic and pneumotachometric methods are usually used to study some parameters of the external respiratory function in practical medicine. As their possibilities are limited, it is reasonable to use such methods as pneumotachographic, plethysmographic etc. for more profound research. Domestic pneumotachographs with an integrator as well as pneumotachographs PTG 3-01 produced by the SKTB "Medfizpribor" are convenient for studying such indices of respiratory biomechanics as respiratory work, elasticity and extensibility of lungs, bronchial resistance, bronchial permeability. The principle of pneumotachograph operation is based on registration of transpulmonary pressure and respiratory volume (V) fluctuations during respiratory cycle, thus a respiratory work loop is drawn, according to which total respiratory work and its components - elastic and non-elastic components - are calculated. At the same time by the loop it is possible to calculate extensibility and elasticity of lungs.