The NIBP100A has a data output mode that outputs the blood pressure reading to AcqKnowledge only at the actual time of a successful reading. This results in a data record that contains a single beat approximately every 10-15 sec and a straight line in-between. The following description explains how to obtain continuous systolic and diastolic blood pressure channels from this raw blood pressure data.
The following image shows blood pressure data collected from an NIBP100A in this mode.
The arrow in the following picture corresponds to the diastolic blood pressure level. Therefore, it is sufficient to take the minimum of the blood pressure waveform 1 sec after the maximum (which is the systolic pressure) in order to obtain the diastolic pressure reading.
Use the measurement boxes to measure two separate channels for systolic and diastolic pressure. Set the measurement boxes so that they contain only two measurements: Max and Min, both from the blood pressure channel (in this screenshot channel 3 is the blood pressure channel):
The Find cycle/Peak feature will identify each cusycle and measure the max and min values. Go to Analysis->Find Cycle/Peak and enter the following settings (Set the correct channel number and the threshold. The threshold level should be less than the systolic blood pressure and higher than the diastolic blood pressure) and click Find all cycles.
Two new channels will be output. The max channel gives you systolic blood pressure, the min channel diastolic. (Select the Save measurements to Excel to paste the measurements into Excel. If exporting to Excel, set up a time measurement box to export the time of each measurement).
The file should look like this (blood pressure channel on top, max and min below):
Use Analysis->Find Rate to obtain two continuous waveforms with systolic and diastolic blood pressure.
Select the Max waveform (make sure no data is highlighted) and go to Analysis->Find Rate. Set it up as shown in the screenshot below:
Repeat the last step for the Min waveform.
The following screen show shows the new channels…rename them from max/min to systolic and diastolic.
The Ventilator Validation Kit supports new prototype development, existing design validation for production testing, mobile field testing and verification, and other uses where accurate pressure and flow measurements are critical. The Ventilator Validation Kit provides ventilator manufacturers and prototype developers with a complete solution for validating new medical/hospital-grade ventilator products intended for human use. The VVK100-SYS includes […]
MIT and Harvard researchers developed a new technique to expand ventilator capacity Individualized System for Augmenting Ventilator Efficacy (iSAVE): A Rapidly deployable system to expand ventilator capacity “The iSAVE is a rapidly deployable solution in response to the urgent shortage of mechanical ventilators for respiratory support during the COVID-19 pandemic. In contrast to previously described […]
New Ventilator Validation System Allows Device Manufacturers to Test Ventilator Pressure and Volume System supports rapid development and testing of hardware for COVID-19 treatment Goleta, California – March 24, 2020 BIOPAC Systems, Inc. announced a new Ventilator Validation System for engineering and device manufacturers to use when designing and testing new and existing ventilators for […]