Информативность спирометрии в диагностике нарушений механики дыхания у больных интерстициальными заболеваниями легких

Spirometry, body plethysmography and elastic features of lungs examined with the esophageal probe were analyzed in 590 patients with interstitial lung diseases. Spirometry was informative for obstructive symptoms recognition in patients with interstitial lung disease. In 80% of cases decreased Tiffeneau test and normal vital capacity corresponded to obstructive disorders which were confirmed by a comprehensive examination. At the same time, spirometry was not informative in detecting restrictive syndrome as the spirometry tests were not normal only in 52% of patients with this variant of ventilation disorders. In the diagnosis of mixed disorders the predictive ability of spirometry was even lower: the simultaneous decrease of vital capacity and Tiffeneau test were found only in 37% of cases of mixed pattern.