Mindray BeneView T1, Руководство оператора

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15-6
15.4.4 Setting up Humidity Compensation
Sidestream and microstream CO
2
modules are configured to compensate CO
2
readings for either Body Temperature and
Pressure, Saturated Gas (BTPS), to account for humidity in the patient’s breath, or Ambient Temperature and Pressure,
Dry Gas (ATPD).
1. ATPD:
100 / P %) vol ( CO ) mmHg ( P
amb 2 2 co
 
2. BTPS:
100 / ) 47 P ( %) vol ( CO ) mmHg ( P
amb 2 2 CO
  
Where,
2 CO
P
= partial pressure,
% vol
= CO
2
concentration,
amb
P
= ambient pressure, and unit is mmHg.
As the mainstream CO
2
module has a built-in heating component to prevent water vapour from condensing, setting
humidity compensation is not needed. For the sidestream and microstream CO
2
module, you can set the humidity
compensation on or off according to the actual condition. To set the humidity compensation:
1. In the [ CO2 Setup ] menu, select [ BTPS Compen ].
2. Select either [ On ] for BTPS or [ Off ] for ATPD, depending on which compensation applies.
15.4.5 Setting the Apnea Alarm Delay
In the [ CO2 Setup ] menu, select [ Apnea Delay ] and then select the appropriate setting. The monitor will alarm if the
patient has stopped breathing for longer than the preset apnea time. The [
Apnea Delay
] of Resp and CO
2
keeps
consistent with each other.
WARNING

The respiration measurement does not recognize the cause of apneas. It only indicates an alarm if no breath
is detected when a pre-adjusted time has elapsed since the last detected breath. Therefore, it cannot be
used for diagnostic purpose.
15.4.6 Choosing a Time Interval for Peak-Picking
For microstream and mainstream CO
2
modules, you can select a time interval for picking the highest CO
2
as the EtCO
2
and the lowest as the FiCO
2
.
In the [ CO2 Setup ] menu, select [ Max Hold ] and toggle between [ Single Breath ], [ 10 s ], [ 20 s ] and [ 30 s ] (for
microstream CO
2
module only).

[ Single Breath ]: EtCO
2
and FiCO
2
are calculated for every breath.

[ 10 s ], [ 20 s ], or [ 30 s ]: EtCO
2
and FiCO
2
are calculated using 10, 20 or 30 seconds of data.