Avaliação em bancada do desempenho de sete diferentes marcas de ressuscitadores manuais auto-inflaveis para adultos produzidos e/ou comercializados no Brasil

Abstract

The performance of seven marks of autoinflated resuscitator bag manufactured and/or commercialized in Brazil was studied using a lung-test and an analyzer analogical about: FiO 2 offered for O 2 flow received, O 2 flow offered without manipulation of the compressible unit, patient valve lock-up when resuscitator receives na O 2 flow of 35 l/min, patient valve backward leakage, drop test, inspiratory and expiratory flow resistance, valve function after contamination by vomitus, easy cleaning and information contained in the device. The resuscitators that possess the option for attached the reservoir of O 2 had supplied to a best concentration of FiO 2 with this accessory. The resuscitator that does not have the option of attached of the reservoir of O 2 had presented greater offers of O 2 flow without the manipulation of the compressible unit. The resuscitator that receive O 2 flow from in the interior of the compressible unit, had the valve of the patient fixed when they had received O 2 flow higher than 5 l/min, modifying the peak pressure, the tidal volume and inspiratory and expiratory flow. The resuscitator when used as source of offering O 2 flow without the manipulation of the compressible unit must be with reservoir of O 2 connected and receiving 15 l/min of O 2 . Three resuscitators receiving 35 l/min had been disabled to ventilate the lung test because patient valve lock-up. One resuctitator presented imperfection in the patient valve backward leakage. The highest resistance to the inspiratory flow had been of 7 and 8 cmH 2 O and the highest resistance to the expiratory flow was of 7 cmH 2 O. All resuctitators had passed in the test of valve function after contamination by vomitus and drop test. Any resuctitators offered information about to the flow of safe O 2 to the compressible unit and the offered FiO2. The different models of resuctitators can get different performances.