Page 11-2 Infinity Gamma Series VF4
Overview
NOTE: The Rsp parameter box is not displayed when you first
enable the ST, IBP2, or the etCO
2
or Multigas locked options. Rsp
monitoring can be restored, however, when you select Show Rsp in
the Main Screen menu (see below).
The monitor measures impedance respiration by passing a harm-
less high-frequency current between two ECG electrodes on the
patient's chest. Electrical resistance (impedance) between the
electrodes varies with the chest’s expansion and contraction dur-
ing inspiration and expiration. The monitor can derive a respira-
tion waveform and rate from these impedance changes.
You can set the monitor’s breath detection sensitivity to Auto or
Manual. If set to Auto, the monitor automatically adjusts the
breath detection sensitivity according to the average size of the
detected breaths. If set to Manual, the detection sensitivity is
based on the waveform amplitude you select (see the section Res-
piration Monitoring Display, below).
The monitor is designed to:
! Display the respiration waveform continuously.
! Calculate the average respiration rate per minute.
! Detect apnea in adult, pediatric, and neonatal patients.
NOTE: When using a 3-Lead ECG cable, you must display ECG
lead II. If Lead I or III is displayed instead, the monitor does not
calculate a respiration rate and requests that you select Lead II.
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