BIOPAC® Systems, Inc. Logo

Pulse Transit Time (PTT), Pulse Wave Velocity (PWV) and Pulse Wave Amplitude (PWA)

AcqKnowledge PPG and ECG data for PTT

Pulse Transit Time (PTT) is the time it takes the Pulse Pressure (PP) waveform to propagate through a length of the arterial tree. The pulse pressure waveform results from the ejection of blood from the left ventricle and moves with a velocity much greater than the forward movement of the blood itself. To measure pulse transit time, record the onset of the R-wave with an ECG100C amplifier and record the pulse waveform at the fingertip using a TSD200 and the PPG100C amplifier or wirelessly with BioNomadix. Use AcqKnowledge to determine the cyclic peak time of both waveforms, then subtract the ECG R-wave peak time from the PPG peak time.

See More...

Details

This is one of many ADVANCED FEATURES for the selected Application. Scroll down for hardware options.

To calculate Pulse Wave Velocity (PWV) , first measure the distance from the heart to the location of the TSD200 sensor, then divide the distance by the PTT. PWV is related to blood pressure delta (Systsolic – Diastolic) in accordance with the following equation (from Bramwell & Hill, 1922):

PWV = K Sqrt [V (Pd/Vd)]

where:
PWV = Pulse Wave Velocity
K = Constant
V = Initial Vessel Volume
Pd = Pressure Delta
Vd = Vessel Volume Delta

AcqKnowledge software can also measure the Pulse Wave Amplitude (PWA) or Pulse Pressure (PP) on a cycle-by-cycle basis by using the Rate function. The Rate function will identify each pulse waveform and measure the amplitude of the signal and report the result as a new channel. The Rate function is available for on-line and off-line analysis of the pulse waveform.

Record pulse data wirelessly with BioNomadix or with standard wired amplifiers and use calculation channels and the find cycle/peak automated analysis routine in AcqKnowledge to easily calculate and extract pulse transit time and pulse wave velocity values. Results can be displayed as graph channels and the PTT and PWV values can be exported to a spreadsheet for further statistical analysis.

Support

Application Notes

Knowledge Base

Hardware Packages   |   Pulse Transit Time (PTT), Pulse Wave Velocity (PWV) and Pulse Wave Amplitude (PWA)

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

Wireless

MRI

Animal

Spotlight On
free BIOPAC webinar

Fundamentals of Physiological Data Recording

Basic principles of physiological data collection covers fundamentals of data collection and equipment configuration equipment to help you refine experiment protocols and avoid costly missteps. Frazer Findlay, CEO of BIOPAC, discusses common mistakes with physiology recording and shares his secrets for collecting great data. Topics include: How to prep a subject and where to place electrodes; Which type of electrodes work for different body signals; Analog to Digital Conversion; Sample rates (correct vs. incorrect); Filtering; and Scaling and calibration.
Watch On Demand Now!

Register Now
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