TY - JOUR T1 - Battery life of portable home ventilators: effects of the ventilatory settings JF - Respiratory Care DO - 10.4187/respcare.02711 SP - respcare.02711 AU - Line Falaize AU - Karl Leroux AU - Hélène Prigent AU - Bruno Louis AU - Sonia Khirani AU - David Orlikowski AU - Brigitte Fauroux AU - Frédéric Lofaso Y1 - 2013/10/22 UR - http://rc.rcjournal.com/content/early/2013/10/22/respcare.02711.abstract N2 - Objectives: Battery life (BL) of portable home ventilators batteries are reported by manufacturers. The aim of the study was to evaluate the effects of ventilatory mode, respiratory frequency, positive end-expiratory pressure (PEEP), and leaks on the BL of 5 commercially available portable ventilators. Design: The effect of the ventilatory mode (volume controlled-continuous mandatory ventilation [VC-CMV] vs Pressure Support ventilation [PS]), PEEP 5 cmH2O, respiratory frequency (10, 15 and 20 cycles/min), and leaks during both VTV and PS on the BL of5 ventilators (Elisee 150, Monnal T50, PB 560, Vivo 50, and Trilogy 100) were evaluated. Each ventilator was ventilated with a test lung at a tidal volume of 700 ml and an inspiratory time 1.2 in the absence of leaks. Main results: The switch of a VC-CMV mode for a PS mode or the addition of PEEP did not significantly change the ventilator BL. The increase of the respiratory frequency from 10 to 20 cycles/min decreased the BL of 18 ± 11% (P<0.005). Leaks were associated with an increase of the BL during the VC-CMV mode (18 ± 20%, P<0.05) whereas the BL decreased during the PS mode (-13 ± 15%, P<0.05). Conclusions: The BL of home ventilators depends on the ventilatory settings. The BL is not affected by the ventilator mode (VC-CMV or PS) or the addition of PEEP. BL decreases with the increase in respiratory frequency and during leaks with a PS mode whereas leaks increase the duration of the ventilator BL during VC-CMV. ER -