Mindray Accutorr 7, Operator'S Manual

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Accutorr 7 Operator’s Manual 9 - 1
9
Monitoring NIBP
9.1 Overview
The monitor uses the oscillometric method to measure the non-invasive blood pressure
(NIBP). This measurement can be used for adults, pediatric and neonatal patients. To
understand how this method works, we will compare it to the auscultative method.
With auscultation, Clinicians listen to the Korotkoff sounds to determine blood pressure
when using the auscultatory method. The estimated mean pressure can then be
calculated with reference to these.
Since the monitor cannot hear the Korotkoff sounds to determine the blood pressure, it
measures cuff pressure oscillation amplitudes. Oscillations are caused by blood pressure
pulses against the cuff. The oscillation with the greatest amplitude is the mean pressure.
This is the most accurate parameter measured by the oscillometric method. Once the
mean pressure is determined, the systolic and diastolic pressures are calculated with
reference to the mean.
The auscultation determines systolic and diastolic pressures and calculates the mean
pressure. The oscillometric method measures the mean pressure and determines the
systolic and diastolic pressures.
As specified by IEC 80601-2-30, NIBP measurements can be performed during electro-
surgery and discharge of defibrillator.
NIBP diagnostic significance must be decided by the clinician who performs the
measurement.
NOTE
•
Blood pressure measurements determined with this device are equivalent to
those obtained by a trained observer using the cuff/stethoscope
auscultatory method or an intra-arterial blood pressure measurement
device, within the limits prescribed by the American National Standard,
Manual, electronic, automated sphygmomanometers, or standards of
IEC80601-2-30, EN1060-1, EN1060-3, EN1060-4 and SP10.