Alarm indicators, Setting alarms, Alarm indicators setting alarms – Welch Allyn 300 Series Vital Signs Monitor - User Manual User Manual

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Chapter 4 Alarms and Alerts

Welch Allyn Vital Signs Monitor 300 Series

Alarm Indicators

The monitor alarm indicators are as follows:

Setting Alarms

During patient monitoring, an alarm occurs when a measurement falls outside the
programmed alarm limit. Alarms can be set or turned off for the following vital signs:

Systolic high and systolic low

Diastolic high and diastolic low

Pulse rate high and pulse rate low

SpO

2

high and SpO

2

low

MAP high and MAP low

Event

Audible Indicator

Visual Indicator

Patient Alarm

Three short tones in quick succession, followed
by a short silence, and then two short tones in
quick succession, followed by a long silence;
repeated until action is taken.

Flashing display of the violating value.
For a MAP violation, the monitor
repeatedly flashes the MAP numerics in
the message display.

Equipment Alert,
Nonrecoverable

Three short tones in quick succession, followed
by a short silence, and then two short tones in
quick succession, followed by a long silence;
repeated for one minute or until power is
shut off.

Flashing display of the violating value for
one minute or until power is shut off.

Error

Two short tones

Continuous display of the error code in the
appropriate window.

Equipment Alert,
Recoverable, NIBP

Two short tones

Continuous display of the error code in the
appropriate window.

Equipment Alert,
Recoverable, SpO

2

,

after valid reading

Two short tones

Flashing display of the last SpO

2

and Pulse

Rate, followed in some cases by a Patient
Alarm tone.

Caution Users should check for audible alarm function every time the VSM 300
is used. During the normal power-up cycle, two audible tones are emitted
immediately after the self-test is complete. If these tones do not sound, the audio
has failed. Remove the device from service and contact Welch Allyn.

The loss of the audible alarm could cause a delay in a clinician learning of an alarm
condition for the following conditions: 1) hypotension or hypertension, 2) low
blood oxygen content (SpO

2

), 3) low or high pulse rate, 4) other alarm conditions

relating to the loss of monitoring of a patient (e.g., a “sensor off” condition). Such
delay could potentially result in injury to the patient.

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