Masimo Radical Signal Extraction Instrukcja Operatora Pobierz pdf (Strona 39)

5-6 Radical-7 Color Display Signal Extraction Pulse Oximeter Operator’s Manual Radical-7 Color Display Signal Extraction Pulse Oximeter Operator’s Manual 5-7

Perfusion Index (PI) Delta Alarm

Perfusion Index gives an indication of the level of perfusion at the monitored site. The

Radical-7 measures perfusion at the SpO

site by comparing the pulsatile signal to the non-

pulsatile signal, and expressing that ratio as a percentage. PI has been clinically proven to

be useful as a predictor of the level of illness in neonates and adults and that PI may change

dramatically in response to sympathetic changes caused by inhalational agents and pain

stimulation. If PI decreases over time, there may be underlying physiological reasons that

may need to be addressed.

The 3D Alarm System provides an audible and visual alert to important changes in perfu-

sion compared to the patient’s baseline PI rate. The baseline is set by the Radical-7 once

the user has enabled the alarm. The baseline is 30 seconds of currently averaged PI. The

3D Alarm System option includes a user-selectable PI Delta Alarm. This allows the clinician

to request an audible and visual alarm if perfusion at the monitored site decreases by a

specified level (delta) over a specified window of time. Three of the variables are selectable

by the user within established ranges as noted below:

Set Baseline: Select OFF or SET. Default is OFF.

PI Delta %

Change:

Range of 10% to 100%. Default is 50%

PI Delta Timeout

Range of 1 min, 5 min, 30 min, 1 hr. 4 hr, 8 hr, 12 hr, 24 hr, 36 hr, 48

hr and NONE. Default is NONE.

PI Delta Baseline

Displays OFF, the current PI baseline or TIMEOUT.

NOTE: This is a Read Only display and not user interactive.

USER INTERACTION TO IMPLEMENT PI DELTA ALARM

The PI Delta Alarm function is enabled in the Radical-7 by the following method:

1. Select the 3D ALARMS menu from the main menu page.

2. Select PI Delta.

3. The PI Delta Alarm menu will be displayed and the user can select from the following

entries:

Set Baseline: Select OFF or SET. Default is OFF.

PI Delta %

Change:

Range of 10% to 100%. Default is 50%

PI Delta Timeout

Range of 1 min, 5 min, 30 min, 1 hr. 4 hr, 8 hr, 12 hr, 24 hr, 36 hr, 48

hr and NONE. Default is NONE.

PI Delta Baseline

Displays OFF, the current PI baseline or TIMEOUT.

NOTE: This is a Read Only display and not user interactive.

If the PI Delta parameter is greater (more negative) than the configured PI Delta Alarm,

then the Radical-7 will make a MEDIUM priority alarm tone, and post an alarm message

as follows:

PI DELTA = ##%

where ## is equal to the current PI Delta percentage and updates real time.

The PI trend graph will also display.

If the Alarm Suspend key is pressed during this alarm, the tone shall be silenced and not

returned when the Alarm Suspend time expires unless the condition is removed and then

returns. The message will remain on the screen until the Alarm condition is removed.

3D Alarm menu

PARAMETER MENU ITEM DESCRIPTION

DESAT INDEX

ALARM

DESAT

THRESHOLD

The Desat Threshold can be set in the range of 2%

to 10% in 1% increments. Default is 4%

DESAT INDEX

TIME

The Desat Index Time can be set in the range of 1

Hr to 4 Hrs in 1-Hr increments. Default is 1 hr.

DESAT INDEX

ALARM

The Desat Index Alarm can be set in the range of

1 to 25 desaturations. Default is OFF.

PI DELTA

ALARM

SET BASELINE

The Set Baseline can be turned on by selecting

SET. Selecting OFF disables the alarm. Default

is OFF.

PI DELTA %

CHANGE

The PI Delta % Change can be set in the range of

10% to 100%. Default is 50%.

PI DELTA

TIMEOUT

The PI Delta Timeout can be set in the range of

the following increments: 1 min, 5 min, 30 min, 1

hr. 4 hr, 8 hr, 12 hr, 24 hr, 36 hr, 48 hr and NONE.

Default is NONE.

PI DELTA

BASELINE

The PI Delta Baseline displays OFF, the current PI

baseline or TIMEOUT.

NOTE: This is a Read Only display and not user

interactive.

alarms and messages

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