Evaluation of manual resuscitators used in ICUs in Brazil

Jornal Brasileiro de Pneumologia

关键词: Teste de materiais;    Respiracao com pressao positiva;    Seguranca de equipamentos;    Desenho de equipamento;    Respiracao artificial;    Ressuscitacao;   

DOI  :  10.1590/S1806-37132013000500010

来源: DOAJ

【 摘 要 】

OBJECTIVE:To evaluate the performance of manual resuscitators (MRs) used in Brazil in accordance with international standards.METHODS:Using a respiratory system simulator, four volunteer physiotherapists employed eight MRs (five produced in Brazil and three produced abroad), which were tested for inspiratory and expiratory resistance of the patient valve; functioning of the pressure-limiting valve; and tidal volume (VT) generated when the one-handed and two-handed techniques were used. The tests were performed and analyzed in accordance with the American Society for Testing and Materials (ASTM) F920-93 criteria.RESULTS:Expiratory resistance was greater than 6 cmH2O . L−1 . s−1 in only one MR. The pressure-limiting valve, a feature of five of the MRs, opened at low pressures (< 17 cmH2O), and the maximal pressure was 32.0-55.9 cmH2O. Mean VT varied greatly among the MRs tested. The mean VT values generated with the one-handed technique were lower than the 600 mL recommended by the ASTM. In the situations studied, mean VT was generally lower from the Brazilian-made MRs that had a pressure-limiting valve.CONCLUSIONS:The resistances imposed by the patient valve met the ASTM criteria in all but one of the MRs tested. The pressure-limiting valves of the Brazilian-made MRs usually opened at low pressures, providing lower VT values in the situations studied, especially when the one-handed technique was used, suggesting that both hands should be used and that the pressure-limiting valve should be closed whenever possible.

【 授权许可】

Unknown