The evaluation of inspiratory muscle function by measuring of «Tension - time» index

Review examines the possibility of using different versions of the «tension - time» index in order to assess the inspiratory muscles function and to determine the reserve capacity of the respiratory muscles in health and diseases of the broncho-pulmonary, cardiovascular, neuro-muscular system, under which the load on the respiratory muscles increases, that can lead to respiratory failure. The absolute values of the index are present in normal and in various diseases, based on the literature and our own data. Possible reasons for changing the values of the index, causing the growth rate in excess of the respiratory muscles, as well as methodological approaches to the correction in the identification of early signs of inspiratory muscle fatigue development are discussed.