title: [Comparison of Different Mechanical Insufflator-Exsufflator Systems by Measurement of the Peak Exspiratory Flow (PEF)].
abstract: BackgroundThe management of pulmonary secretion in patients with respiratory muscle weakness using mechanical insufflator-exsufflator systems (MIE) is an established treatment option. There are significant differences in the efficiency of different devices in practical use. The intention of this study was to evaluate the peak exspiratory flow (PEF) values of different devices with and without use of equipment.MethodsPEFs of ten MIE were investigated in vitro using different equipment.ResultsThe efficiency of the devices showed significant differences. The use of two bacterial filters showed a significant reduction of 13 % compared to one filter, the use of a catheter mount revealed a significant reduction of 10 %, with an elbow connector additionally 15 %. With a commonly used equipment (1800 mm tube, one filter, catheter tube with elbow) there was a difference of 58 % between the devices Nippy (2,86 l/s) and Pulsar (1,2 l/s).ConclusionThere are significant differences in PEF of different MIE and use of different equipment. That could be of therapeutic relevance. Further studies are needed to investigate the clinical relevance of these findings. Recommendations for the use of devices and equipment are necessary to ensure the efficacy of the elimination of pulmonary mucus.
authors.affiliation: Atemhilfe - Service für außerklinische Beatmung.
authors.forename: Ansgar
authors.initials: A
authors.lastname: Schütz
authors.affiliation: Pneumologisches Beatmungszentrum Bad Belzig, Pneumologie und Beatmungsmedizin der Klinikgruppe Ernst von Bergmann Bad Belzig.
authors.forename: Janine
authors.initials: J
authors.lastname: Wagner
authors.affiliation: Pneumologisches Beatmungszentrum Bad Belzig, Pneumologie und Beatmungsmedizin der Klinikgruppe Ernst von Bergmann Bad Belzig.
authors.forename: Anne
authors.initials: A
authors.lastname: Conrad
authors.affiliation: Charité - Universitätsmedizin Berlin, Neurologische Poliklinik, Ambulanz für ALS und andere Motoneuronenerkrankungen.
authors.forename: Andreas
authors.initials: A
authors.lastname: Funke
mesh_terms: D001419:Bacteria / Q000302:isolation & purification*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006801:Humans; D007327:Insufflation / Q000295:instrumentation* / Q000379:methods; D010366:Peak Expiratory Flow Rate; D015203:Reproducibility of Results; D012129:Respiratory Function Tests / Q000295:instrumentation* / Q000379:methods*; D012680:Sensitivity and Specificity; D014462:Ultrafiltration / Q000295:instrumentation* / Q000379:methods