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pressure < -10cm h2o warning |
sub-atmospheric pressure alarm |
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defaults mv < 3LPM |
volume monitor |
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exhaled tv= |
tv + fgf - circuit compliance in machines without fgd. |
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what 3 alarms are displayed in the volume monitor |
1. apnea-volume alarm |
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digital display of tv, bpm and mv |
volume monitor |
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caution on apnea vol alarm |
breath (>80ml) not detected for 15sec |
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warning on apnea vol alarm |
breath (>80ml) no detected for 30sec. |
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if mv < alarm setting |
low minute vol |
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reversed flow >20ml through sensor |
reverse flow |
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upper airways heat and humidify inhaled gases to |
37degc and 95% humidity |
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cilia beat |
100-1500cycles/min |
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mucociliary transport works best at |
80-90%RH and 32-33deg C |
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actual mass of water in a given vol of gas at a given temp, mg/L |
absolute humidity |
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max mass of water vapor that a given vol of gas can hold at a given temp |
maximum (saturated) humidity |
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water content directly related to |
temp |
