BIOPAC® Systems, Inc. Logo

NIBP100A single pulse data analysis

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.
 
Raw NIBP100A data
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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.
 
Single NIBP100A beat
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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):
 

Toolbar
 
 
 
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.
 
Cycle detector - Setup
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Cycle detector selection
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Cycle detector output
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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):
 
Data step 1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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:
 
Find rate
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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.
 
Data step 2
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Associated Applications

Associated Application Notes

Spotlight On
free BIOPAC webinar

Teaching Physiology: How to Engage Students in Lab Environments

A successful lab is one where students are fully engaged and learning the concepts—where they can achieve their goals without wasting time on equipment setup and confusing processes. Join Cindy Marolf, EdD, Nebraska Wesleyan University, as she discusses how she’s utilized the Biopac Student Lab to customize her students’ lab experience and the positive impact it has had on both her and her students. Learn about the benefits of adding a teaching solution, increasing student engagement with technology, reducing the amount of work for Professors, and options for core lessons, creating custom lessons, and scaling lessons to fit with your course curriculum.

Register Now
Latest News

New Citations | Computer-Human Interaction

Technology is more interactive in a multitude of contexts, from completing tasks at work, looking for help online, to leisurely activities like news and video streaming. Understanding how to improve interaction between humans and computers can hold benefits in multiple situations. The following are recent human-computer interaction (HCI) studies. The Eyes Have It Nasser et al. […]

New Citations | Breath of Life

With new developments happening daily, it’s easy to forget to slow down and take a breath. Breathing can be as forgettable as it is crucial; the often forgettable automatic function inspires rituals in religions around the world. Studies have shown the importance of breathing not just in a spiritual sense but also in physiological health benefits. Lung functionality […]

Read All
Request a Demonstration
Request a Demonstration