Mindray uMEC10, Руководство оператора

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9-1
9
Monitoring Respiration (Resp)
9.1 Introduction
Impedance respiration is measured across the thorax. When the patient is breathing or
ventilated, the volume of air changes in the lungs, resulting in impedance changes between
the electrodes. Respiration rate (RR) is calculated from these impedance changes, and a
respiration waveform appears on the patient monitor screen.
9.2 Safety Information
Warning
z
When monitoring the patient’s respiration, do not use ESU-proof ECG cables.
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If you do not set the detection level for the respiration correctly in manual
detection mode, it may not be possible for the monitor to detect apnea. If you set
the detection level too low, the monitor is more likely to detect cardiac activity, and
to falsely interpret cardiac activity as respiratory activity in the case of apnea.
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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.
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If operating under conditions according to the EMC Standard IEC 60601-1-2
(Radiated Immunity 3V/m), field strengths above 1V/m may cause erroneous
measurements at various frequencies. Therefore it is recommended to avoid the use
of electrically radiating equipment in close proximity to the respiration
measurement unit.