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The operation of ABPM-04
ABPM-04 has to be programmed for operation with the CardioVisions software before a monitoring
session. When the pre-programmed time is reached, it automatically starts measurements based on the
monitoring plan, so it does not have to be switched on. However, it may be switched off manually, and
in this case it must be switched back on manually. To gain reliable blood pressure readings, some rules
must be observed.
Rules of monitoring
1.
Please inform your patients about the goal and expectable results of the monitoring and give them
an event diary and guidelines in all cases.
2.
Basic rule! Patients should avoid excess movement during measurements. They should hold their
arm loose, slightly away from the chest.
3.
Patients can attach and fix the device with adjustable straps which close with safety claps.
4.
The cuff should be properly placed, not too loose or too tight. It should be connected to the
device. It is advisable to wear a thin shirt under the cuff. This does not influence measure-ment
accuracy but prevents problems caused by long-time wear (sweat, itching, etc.).
5.
Patients may start extra blood pressure measurements with the START button (the plain,
unmarked button). They should mark events with the EVENT button (the button marked with a
circle). They may interrupt a measurement if necessary with either button.
6.
Patients should not take the device off at night. By loosening the straps they can avoid problems
when turning in their sleep. The device does not disturb the majority of patients and they do not
wake up due to the measurements.
7.
Should the batteries run down during a monitoring session, they can be simply replaced.
Monitoring will continue and data will not be lost.
8.
Patients should never measure somebody else's blood pressure with the device.
Do not apply ambulatory blood pressure monitoring devices to people with serious mobility or
other impairments without supervision, unconscious or otherwise incapable patients, nor to
patients with coagulation disturbances.
Indications for use
Indications for use, as recommended in the most recent guidelines for ambulatory blood pressure
monitoring (ABPM):
1. Based upon studies on prognosis and a clinical trial based upon BP control as an outcome,
ambulatory BP monitoring should be considered for untreated patients whenever an office-
induced increase in BP is suspected.
2. Ambulatory BP monitoring should be considered for treated patients suspected of having an
office-induced increase in BP, including individuals with apparent resistance to drug therapy,
symptoms suggestive of hypotension, and fluctuating office BP readings.
3. Based upon studies on prognosis, changes in nocturnal BP should be taken into account in any
decision to withhold drug therapy based upon the ABP.
Blood pressure measurement
Blood pressure measurement takes place during the stepwise deflation (with decreasing numbers on
the LCD). It is typical of a successful measurement that discrete pressure-levels, following each other
quickly, are soon followed by a complete deflation. The measurement results are stored and - if this
feature is not specifically disabled - they are displayed. First the systolic value (with the upper LCD
segment lit to the left) is displayed on the LCD, then the diastolic value (with the lower LCD segment
lit to the left), followed by the pulse rate (preceded by a letter P). The result of a programmed
measurement is displayed twice in this sequence, and the result of an extra, manually started
measurement is displayed six times. Then the device automatically switches back to normal operation
mode, displaying the time on its LCD, waiting for the following programmed measurement. Extra
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