[A comparative evaluation of the efficacy of the traditional combination of high-frequency and intermittent high-frequency artificial ventilation of the lungs in patients with parenchymatous acute respiratory insufficiency].

Conventional controlled lung ventilation (CLV) with positive end expiratory pressure (PEEP) (Con CLV), combined high-frequency CLV (Com HF CLV) and intermittent high-frequency CLV with PEEP (Int HF CLV) have been performed in 43 patients with parenchymatous acute respiratory failure (ARF). It has been established that Int HF CLV significantly increases PaO2 in patients with focal damages of the lung parenchyma and effective compliance (Ceff) > 0.033 l/cm H2O. Com HF CLV increases significantly PaO2 and lung compliance in patients with disseminated lung damages and Ceff < 0.030 l/cm H2O and has marked consequences. Different efficacy of various types of HF CLV under study may be to some extent accounted for by different intraalveolar maximum pressure, which (as it has been shown on the lung model) is higher in Com HF CLV and lower in Con CLV and Int HF CLV.