Single Measurement Mode; Interval Measurements Mode - Dräger Infinity Acute Care System M540 Instructions For Use Manual

Non-invasive blood pressure (NIBP)

Single measurement mode

Single measurement mode allows you to start mea-
surements when needed. You can start and stop a
single measurement any time.
To start a single measurement
Press the NIBP fixed key on M540. Pressing the
key again, stops the measurement.

Interval measurements mode

WARNING
Because non-invasive blood pressure mea-
surements occur intermittently, a patient's
condition may change between measure-
ments. Therefore, do not rely on non-invasive
blood pressure alarms alone to notify you of a
patient's changing condition.
In interval mode, the M540 initiates measurements
at set intervals. Changing the interval setting during
a measurement resets the interval timer. If you se-
lect another interval setting after interval mode was
deactivated, you must press the NIBP key on the
front of the M540 for interval measurements to
start.
NOTE
A safety timer ensures that a cuff remains deflated
for at least 30 seconds before the end of a mea-
surement and the beginning of a new one. This
precaution avoids prolonged impeded blood flow
which could be harmful. The safety timer over-
rides any interval setting and is of particular im-
portance in the 1 and 2-minute intervals.
You can still take single measurements during an
interval cycle.
Interval measurements are not possible during:
– Venous stasis mode – the measurements re-
sume immediately after the cuff deflates.
200 Instructions for use Infinity Acute Care System – Infinity M540 SW VG4.n
– Cardiac bypass mode – press the NIBP key to
resume interval measurement after exiting car-
diac bypass mode.
– Standby mode – press the NIBP key to resume
interval measurement after exiting standby
mode.
– Activated Continuous mode.
To activate or deactivate interval mode
1 Touch the non-invasive blood pressure param-
eter box.
2 Touch the Settings tab.
3 Touch the Interval time button and select the
desired time (Off, 1, 2, 2.5, 3, 5, 10, 15, 20, 25,
30, 45, 60, 120, or 240 min).
For any interval setting of 5 minutes and up, the
following time alignment occurs. After the first
measurement is completed, all subsequent
measurements align with the next natural time
boundary that corresponds to the selected inter-
val. For example, if a 5-minute interval is select-
ed at 10:03, the next interval starts at 10:05,
10:10 and so on. If a 10-minute interval is se-
lected at 10:07, the next interval starts at 10:10,
10:20, and so forth.
4 Touch X to close the dialog window.