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
BIOPAC Facial EMG

FEMG Smart Amplifier

The fEMG Electromyography Smart Amplifier is designed specifically for recording facial EMG signals and electrical activity from other small muscle groups. Use with AcqKnowledge™ software to analyze facial expressions and startle paradigms. BIOPAC’s new Smart Amplifiers are designed for great data. Smart Amplifiers improve performance by amplifying the physiological signal close to the subject, which allows a high-level […]

View All
Latest News

New Citations | The secret is always exercise!

Recent Exercise Physiology studies feature BIOPAC’s MP Research series of Data Collection recorders and AcqKnowledge software. These studies promote healthy living and observe muscle response to normal physiological motions during exercise! Trampoline Workouts for Seniors? As we get older, our joints ache and muscles stiffen—but scientists are finding new ways to not only help us […]

Electrocardiography Guide Now Available

BIOPAC’s just released Introductory ECG Guide addresses fundamental to advanced concerns to optimize electrocardiography data recording and analysis. Topics include: ECG Complex; Electrical and Mechanical Sequence of a Heartbeat; Systole and Diastole; Configurations for Lead I, Lead II, Lead III, 6-lead ECG, 12-lead ECG, precordial leads; Ventricular Late Potentials (VLPs); ECG Measurement Tools; Automated Analysis Routines […]

Read All
Request a Demonstration
Request a Demonstration