HT50

Back up ventilation is Triggered in any mode when the delivered inspiratory minute volume (V·I) falls below the 6V·I alarm setting. · A/CMV or SIMV: mandatory breath frequency increases by 1.5 times the frequency (ƒ) setting, minimum 15 b/min, maximum 99 b/min· SPONT: MODE changes from SPONT to SIMV, Pressure Controlled ventilation, mandatory breath frequency (ƒ)= 15 b/min., peak inspiratory pressure = 15 cmH2O/mbar above set PEEP and inspiratory time (tI) = 1.0 second. Audible: Intermittent beepVisual: 6V·I (Back-up Vent) alarm indicator blinks redMessage: Low V·I (BUV)Back up Ventilation is Cancelled· User: If the user adjusts any ventilation parameter, Back-up Ventilation is suspended for one minute and all user selected ventilation parameters are employed. · HT50: If delivered inspiratory minute volume exceeds the 6V·I alarm setting by 10%, Back-up Ventilation is cancelled and all user selected ventilation parameters are employed.