S12 Vet Monitor User’s Manual
9-1
Chapter 9 Respiration Rate (RESP)
9.1. Introduction
Impedance respiration is measured across the thorax. When the patient is breathing,
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 monitor screen.
9.2. Safety Information
WARNING:
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.
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.
If operating under conditions according to the EMC Standard IEC 60601-1-2
(Radiated Immunity 3V/m), field strengths above 3V/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.
The impedance respiration measurement may cause rate changes in Minute
Ventilation Rate Responsive Pacemakers. Set the pacemaker rate responsive
mode off or disable the impedance respiration measurement on the monitor.
When using the electrosurgery unit, ensure proper contact of the ESU return
electrode to the patient to avoid burns at monitor measurement sites. Also
ensure that the ESU return electrode is near the operating area.
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