GE CareScape V100, Руководство по обслуживанию

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2-12 CARESCAPE V100 Vital Signs Monitor 2048723-002C
Equipment overview: Overall principles of operation
cuff pressure falls below 7 mmHg. The monitor then deflates the cuff (to zero
detected pressure), analyzes the stored data, and updates the screen.
The operating cycle is composed of four parts: inflation time, deflation time,
evaluation time, and wait time. Wait time, which varies from mode to mode, is
affected by the cycle time (auto mode) or operator intervention (manual mode).
The figure shows the basic operating cycle.
NIBP operating cycle
Systolic search
If systolic pressure is not found, the NIBP parameter can search at cuff pressures
higher than the initial target pressure. The parameter will inflate the cuff above
the initial target pressure to get more data in the systolic region. The pressure is
limited to the maximum allowed for the selected patient type.
In any operating mode, if a patient's systolic pressure exceeds the inflation
pressure of the monitor, the monitor will begin normal deflation sequence,
detect the absence of a systolic value, stop deflation, reinflate to a higher (than
initial) inflation pressure, and resume normal deflation sequence.
In manual mode, if a previous valid systolic pressure is displayed and less than 2
minutes old, and the new systolic pressure oscillations are compared with the
previous valid determination and the monitor "thinks" that the systolic was not
obtained, the monitor will inflate the cuff to a pressure above the immediately
preceding inflation.
Reference used to determine NIBP accuracy
To establish accuracy of an NIBP device, manufacturers have used several
different types of references. The reference blood pressures may be obtained by
invasive pressure monitoring at the central aortic region or at the radial sites.
The reference blood pressures may also be obtained by noninvasive methods
like auscultatory method (using cuff and stethoscope).
NOTE
For neonatal mode, the reference is always the intra-arterial pressure
monitoring method.
Monitors with intra-arterial reference (DINAMAP SuperSTAT and
classic technology)
For these monitors, the NIBP is referenced to the invasive blood pressure
obtained at the central aortic region.