Pneumologie
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Comparative Study Clinical Trial Controlled Clinical Trial
[Comparison of the efficacy of the BiPAP-S/T and the VPAP-S/T ventilators in patients with stable chronic respiratory insufficiency].
This study compares the performance characteristics and clinical effectiveness of the BiPAP-S/T (Respironics, USA) and VPAP-S/T (ResMed, Australia) pressure support ventilator during two weeks of nasal ventilation in 15 patients with stable chronic respiratory insufficiency. All patients were previously stabilised using nasal BiPAP ventilation for at least three months. Subjects had a maximum inspiratory pressure of 20 cm H2O and highest breathing rate of 24 per minute. ⋯ Sleep quality and number of respiratory arousals were very similar at the end of the two weeks' test period with BiPAP-S/T and VPAP-S/T. Synchronisation of VPAP-S/T during REM was probably better than with BiPAP-S/T, because in the presence of mouth leak BiPAP-S/T occasionally jammed in IPAP, but VPAP-S/T did not. In conclusion, in the tested settings VPAP-S/T is as effective as BiPAP-S/T in maintaining ventilation and controlling blood gases during sleep in patients with stable respiratory insufficiency.