BIOPAC® Systems, Inc. Logo

Regional Blood Flow

To analyze regional blood flow, occlude the venous return with the blood pressure cuff (TSD120) and measure the swelling of the distal portion of the limb with a mercury strain gauge, otherwise known as a strain gauge plethysmograph (SPG). This Pneumo Plethysmography (PnuPG) test allows users to monitor changes from a baseline reading and compare responses from one subject to the next. Typically, the initial slope of the response is determined, and a series of measurements are taken, including:

See More...

Details

BIOPAC applications and life science data analysis
This is an Application overview...for details and suggested hardware, click through to an Advanced Feature.
  • Venous capacitance—The inflow curve plateaus because eventually the venous pressure rises sufficiently to force blood past the occluding cuff; the increased volume at this point thus represents the capacity of the venous system to store blood and is termed the venous capacitance.
  • Venous outflow—Use venous outflow to determine deep venous thrombosis (DVT). Rapidly release the cuff pressure from the point of maximum swelling and record the time taken for the signal to return to the normal (pre-inflation) level. The level of flow resistance determines the time it takes the flow signal to return to normal.
  • Venous compliance—To measure venous capacitance as a function of pressure, follow the procedure for measuring venous capacitance but use different occluding cuff pressures. The slope of this relationship measures the venous compliance.

The mercury strain gauge interfaces with the DA100C amplifier and a TCI111A/112.

Support

Application Notes

Knowledge Base

Hardware Packages   |   Regional Blood Flow

Hardware Bundles are complete solutions for the specified application. Choose your preferred platform and bundle, then click "Request Pricing" to request an estimate, add/remove items, or complete purchase. If you have questions about specific items, click through to the product web page for details and specifications, or contact your Local Sales contact.

Wired

Spotlight On

Noninvasive Blood Pressure System for MRI

The NIBP-A-MRI CareTaker4 system measures relative central arterial pressure to provide continuous, noninvasive “Beat-by-Beat” Blood Pressure from at rest humans (≥ 15 kg) in the MRI; measures include Diastolic, Systolic, Mean Arterial Pressure.; heart rate (HR) data is available. The system uses the scientific method of Pulse Decomposition Analysis (“PDA”). Key features Continuous, noninvasive monitoring […]

View All
Latest News

Neuromarketing Interview | How VR Can Improve Marketing Research

Alex Dimov, BIOPAC Sales Executive, was interviewed at the Neuromarketing World Forum by Inside Marketing to discuss how virtual reality can improve marketing research. Alex explains how VR can be used to present virtual iterations of a product to save time and money, and notes that measuring physiological responses adds lots of information for product and messaging […]

BIOPAC Launches New “Smart Amplifiers”

February 14, 2019 BIOPAC Systems, Inc. Goleta, CA USA New “Smart Amplifiers” make it easier than ever for life science researchers to get great data Fast Setup & High Performance Smart Amplifiers improve performance by amplifying the physiological signal close to the subject, which allows a high-level voltage connection to the data acquisition system and reduces noise artifact. […]

Read All
Request a Demonstration
Request a Demonstration