Automatic tube compensation "ATC(R)" : a comparison with pressure support ventilation in respiratory system simulator / "Compensação automática do tubo "ATC(R)": uma comparação com a ventilação com pressão de suporte em simulador do sistema respiratório"

AUTOR(ES)
DATA DE PUBLICAÇÃO

2004

RESUMO

We evaluated the performance of the automatic tube compensation (ATC) and pressure support ventilation (PSV) of Evita 4 ventilator in respiratory system simulator at 4 different situations (2 effort and 2 resistance). The PSV was compared with ATC and with ATC+PSV and the CPAP with ATC+CPAP. The ATC resulted in the same work as PSV of 5 cmH2O in only 1 out of 4 simulations, in which ATC+PSV was also superior to PSV. The delay time in cycling was lower in ATC and ATC+PSV in 4 simulations. The ATC+CPAP reduced the expiratory pressure-time product in relation to CPAP. Hence, the compensation by ATC is equivalent to the PSV of 5 cmH2O. The combination ATC+PSV is more effective. The ATC and ATC+PSV provide better synchronism than PSV. The ATC expiratory compensation results in less expiratory work.

ASSUNTO(S)

equipamentos e provisÕes respiraÇÃo artificial/utilização estudos de avaliaÇÃo equipment and supplies trabalho respiratÓrio work breathing evaluation studies estudo comparativo comparative study

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