PURPOSE: The purpose of this study is to describe and test a modified Boussignac system for non-invasive continuous positive airway pressure, aimed at reducing the decrease in inspiratory oxygen fraction (FiO(2)) with higher inspiratory peak flow rates. METHODS: We modified a Boussignac circuit by inserting a T-piece between the Boussignac valve and the face mask. The T-piece was connected to a reservoir balloon receiving oxygen by an independent source. The system was tested in a bench study, consisting of five steps, with increasing inspiratory peak flow rates [Formula: see text] Three levels of PEEP were tested: 7, 10 and 13 cmH(2)O. The following devices were tested: Boussignac, Boussignac with reservoir but without supplementary oxygen, Boussignac with reservoir and 10 (SUPER-Boussignac(10)) and 30 l/min (SUPER-Boussignac(30)) of supplementary oxygen. In each step we measured FiO(2), tidal volumes, and airway pressure. RESULTS: FiO(2) increased with PEEP and decreased at increasing [Formula: see text] with all the systems. However, FiO(2) increased with SUPER-Boussignac(10) (7-10%) and with SUPER-Boussignac(30) (10-30%). Moreover, in the latter case, for [Formula: see text] values up to 60 l/min, FiO(2) became independent of [Formula: see text] The SUPER-Boussignac allowed also smaller drop in airway pressure during inspiration and higher tidal volumes. CONCLUSIONS: The SUPER-Boussignac represents a simple way to significantly improve the performance of the Boussignac device.
Bellani, G., Foti, G., Spagnolli, E., Castagna, L., Patroniti, N.A., & Pesenti, A. (2009). An improved Boussignac device for the delivery of non-invasive CPAP: the SUPER-Boussignac. INTENSIVE CARE MEDICINE, 35(6), 1094-1099.
|Citazione:||Bellani, G., Foti, G., Spagnolli, E., Castagna, L., Patroniti, N.A., & Pesenti, A. (2009). An improved Boussignac device for the delivery of non-invasive CPAP: the SUPER-Boussignac. INTENSIVE CARE MEDICINE, 35(6), 1094-1099.|
|Tipo:||Articolo in rivista - Articolo scientifico|
|Carattere della pubblicazione:||Scientifica|
|Titolo:||An improved Boussignac device for the delivery of non-invasive CPAP: the SUPER-Boussignac|
|Autori:||Bellani, G; Foti, G; Spagnolli, E; Castagna, L; Patroniti, NA; Pesenti, A|
|Data di pubblicazione:||giu-2009|
|Rivista:||INTENSIVE CARE MEDICINE|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1007/s00134-009-1403-x|
|Appare nelle tipologie:||01 - Articolo su rivista|