Selects the source that produces the heart rate, as displayed in the ECG and SPO2 VS boxes
(identical to and interactive with same option in the ECG, P1 and P2 menus).
The following options are available:
To set the heart rate source
Expression MR400 Instructions for Use Monitoring SPO2 6‐17
Select Desat Time.
The Desat Time menu appears. The current setting is highlighted.
Select the desired time (in seconds) for the alarm indication:
The setting is changed.
Auto sets the source automatically according to the highest priority active input that is first
to report valid patient data. The priority ranking (highest to lowest) is ECG, P1, P2, SPO2
(provided that the P1 and P2 channels have been labeled ABP; see Set Label on page 8‐24
for details). The source will become unavailable when it has produced no valid data for a
period of ten (10) or more seconds. The system examines the highest priority active input.
If not found, the second‐highest priority input is chosen, et cetera. If none are present,
then None is displayed as the heart rate measurement numeric.
ECG sets ECG as the source. (Default)
ABP sets ABP as the source (if no pressure channel is labeled ABP, a warning box will allow
automatic renaming and selection before proceeding; also see Set Label on page 8‐24).
SPO2 sets SPO2 as the source.
Select the SPO2 VS box.
The SPO2 menu appears. Current settings are displayed.
Select HR Source.
The HR Source menu appears. The current setting is highlighted.