10 Monitoring NBP

Preparing to Measure NBP

CAUTION If you spill liquid onto the equipment or accessories, particularly if there is a chance that it can get inside the tubing or the MMS, contact your service personnel.

Measurement Limitations

Measurements are impossible with heart rate extremes of less than 40 bpm or greater than 300 bpm, or if the patient is on a heart-lung machine.

The measurement may be inaccurate or impossible:

if a regular arterial pressure pulse is hard to detect

with cardiac arrhythmias

with excessive and continuous patient movement such as shivering or convulsions

with rapid blood pressure changes

with severe shock or hypothermia that reduces blood flow to the peripheries

with obesity, where a thick layer of fat surrounding a limb dampens the oscillations coming from the artery

on an edematous extremity.

Measurement Methods

There are three methods of measuring NBP:

Manual - measurement on demand.

Auto - continually repeated measurements (between one and 120 minute adjustable interval).

STAT - rapid series of measurements over a five minute period, then the monitor returns to the previous mode. Use only on supervised patients.

Reference Method

The NBP measurement reference method can be Auscultatory (manual cuff) or Invasive (intra- arterial). For further information, see the Application Note on NBP supplied on the monitor documentation CD-ROM.

In Adult and Pediatric mode to check the current setting, select Main Setup -> Measurements -> NBP, and check whether the Reference setting is set to Auscultatory or Invasive. This setting can only be changed in Configuration Mode.

In Neonatal mode, to comply with safety standards, invasive is always used as the reference method. This setting cannot be changed and is not visible in any operating mode.

Preparing to Measure NBP

1Connect the cuff to the air tubing.

2Plug the air tubing into the red NBP connector. Avoid compression or restriction of pressure tubes. Air must pass unrestricted through the tubing.

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Philips MP40/50, MP60/70/80/90 Preparing to Measure NBP, Measurement Limitations, Measurement Methods, Reference Method

MP60/70/80/90, MP40/50, MP20/30 specifications

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