Masimo Radical Signal Extraction Návod k obsluze stáhnout pdf (Strana 38)

5-4 Radical-7 Color Display Signal Extraction Pulse Oximeter Operator’s Manual Radical-7 Color Display Signal Extraction Pulse Oximeter Operator’s Manual 5-5

alarms and messages

USER INTERACTION TO IMPLEMENT DESAT INDEX ALARM

The Desat Index 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 Desat Index.

3. The Desat Index Aarm menu will be displayed and the user can select from the follow-

ing entries:

Desat Index Threshold: Range of 2% to 10% in 1% increments, default of 4%

Desat Index Time:

Range of 1 Hr to 4 Hrs in 1-HR increments, default

of 1 hr

Desat Index Alarm: Range of 1 to 25 desaturations, default is OFF

If the measured Desat Index parameter is greater than the conﬁ gured Desat Index

Alarm level selected, the Radical-7 will make a MEDIUM priority alarm tone and post an

alarm message as follows:

DESAT INDEX = ##

where ## is equal to the current Desat Index and updates real time.

If the Alarm Suspend key is pressed during the Desat Index alarm, the tone is silenced

and will not return 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.

Desat Index Alarm

Traditional high and low SpO

alarm limits alert clinicians to saturation levels that exceed

user-selected thresholds, and these thresholds are typically established at a considerable

change from the patients’ baseline saturation level. However, in select patient populations,

substantial desaturation events that exceed a typical low alarm limit threshold may be pre-

ceded by a cycle of transient desaturations over a limited timeframe, and the ability to alert

clinicians to a cycle of these smaller desaturations may provide an earlier indication of a

potential significant decline in the patient’s status and the need for more focused monitoring

and/or a change in treatment.

To address patient populations at risk for cyclic, moderate desaturations, the 3D Alarm

System option includes a user-selectable Desat Index Alarm which allows the clinician to

request an audible and visual alarm in the event the patient experiences a specified number

of desaturations beyond a defined level from the patient’s baseline saturation over a spe-

cific window of time, with each of these variables selectable by the user within established

ranges as noted below:

Desat Index Threshold: Range of 2% to 10% in 1% increments, default of 4%

Desat Index Timeframe: Range of 1 to 4 Hrs in 1-Hr increments, default of 1 Hr

Desat Index Alarm/Quantity: Range of 1 to 25 desaturations, default is OFF

To translate the above Desat Index variables and ranges into perspective, consider a patient

at risk of respiratory compromise with the definition for respiratory compromise of 5 or more

transient moderate desaturations (associated with a 4% drop in SpO

) per hour. To request

a Desat Index alarm for this situation, the clinician would set the Desat Index variables as

follows:

Desat Index Threshold: 4%

Desat Index Timeframe: 1 hour

Desat Index Alarm 5 (desaturations)

Post-operative patients receiving pain medication may be predisposed to respiratory

depression. If the patient has an underlying respiratory condition, pain medication may

cause the patient to spiral into a cascade of cyclic desaturations, which initially are mild

but may worsen quickly. The Desat Index Alarm may give an early warning of this type of

respiratory disturbance that can lead to respiratory depression and even arrest.

CAUTION: THE DESAT INDEX ALARM IS INTENDED AS AN ADJUNCT RATHER THAN

IN PLACE OF THE LOW SATURATION ALARM

alarms and messages

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