Bionet BM1, User Manual

Page: 85 / 141

Rev. 2.2
85
9. NIBP
NIBP Overview
The monitor can acquire and process non-invasive blood pressure (NIBP) signals and display the
output. Blood pressure measurements are determined by the oscillometric method and are
equivalent to those obtained by intra-arterial methods, within the limits prescribed by the
Association for Advancement of Medical Instrumentation, Electronic Automated
Sphygmomanometers (AAMI/ANSI SP-10).
If the pulse signal is poor due to patient movements, improper cuff placement or noise in the signal,
the cuff deflates and the monitor attempts a second measurement. For causes and possible
remedies for a poor pulse signal see the alarm message tables. The hose connects the cuff to the
monitor to determine the contraction, expansion and mean blood pressure of an adult, pediatric or
neonatal patient. The monitor can start the blood pressure measurement alone with set intervals,
set rest time or persistence lasting more than 5minutes.
NIBP Precautions
Measurement Limitations
The measurement may be inaccurate or impossible:

Heart rate extremes of less than 40 bpm or greater than 300 bpm

If the patient is on a heart-lung machine

With excessive and continuous patient movement such as shivering or convulsions

If a regular arterial pressure pulse is hard to detect

With cardiac arrhythmias

With rapid blood pressure changes

With severe shock or hypothermia that reduces blood flow to the peripheries