Baroreflex Sensitivity (BRS) measures the relationship between blood pressure and heart rate. The body regulates blood pressure to ensure proper blood flow to organs underneath different conditions, e.g. supine to standing. Baroreflex sensitivity is a measure of how quickly the blood pressure system can compensate for changes in conditions. Variations in baroreflex sensitivity are useful as a comparative measure between subjects and for assessing various external impacts.
The Baroreflex Sensitivity (BRS) analysis license for AcqKnowledge provides two standard algorithms for deriving BRS from continuous noninvasive blood pressure and ECG. Two options are available, the slope method and the sequence method.
See More...
This is one of many ADVANCED FEATURES for the selected Application. Scroll down for hardware options.Slope method:
This method operates over user selected regions of data or the entire file. The routine identifies each ECG cycle and marks the components within the cycle (P,Q,R,S & T) and also locates and marks the systolic and diastolic points of the blood pressure signal. Systolic blood pressure values are plotted against the heart rate values in an interactive X/Y display that includes a table of values for each cycle. When a particular point is selected in the X/Y plot, the display highlights the data in the time series chart display. Data points can be turned off and on by selecting the X/Y points, or identifying them in the data table, and the slope of the best linear regression fit is updated to reflect the changes. The BRS value and goodness of fit value are also displayed and updated as data points are turned on and off.
Sequence method:
This method operates over the entire file or within focus areas. The routine identifies each ECG cycle and marks the components within the cycle (P, Q, R, S & T) and also locates and marks the systolic and diastolic points of the blood pressure signal. There is an option for displaying the R-R values and systolic blood pressure values as new channels so that you can quickly identify outliers or noise in the raw data. The primary dialog includes settings for the minimum number of consecutive increasing or decreasing cycles and the minimum rate of change for heart rate (msec) and systolic blood pressure (mmHg) before a sequence is initiated. The results of the analysis are displayed in the Journal or spreadsheet file.
References
BIOPAC Research Solutions | ECG
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.
MP36R System
Wired | Baroreflex Sensitivity Analysis
MP36R with AcqKnowledge plus NIBP amp and interface, electrode lead adapter, 8 mm reusable electrodes
MP36R System
Wired | Baroreflex Sensitivity Analysis
MP36R with AcqKnowledge plus NIBP amp and interface, shielded lead set and disposable electrodes
MP36R System
Wired | Baroreflex Sensitivity Analysis
MP36R with AcqKnowledge plus NIBP amp and interface, shielded lead set and disposable foam electrodes
MP160 System
Wired | Baroreflex Sensitivity Analysis
MP160 System with noninvasive BP amp and ECG amp with disposable electrodes
MP160 System
Wired | Baroreflex Sensitivity Analysis
MP160 plus AcqKnowledge with NIBP, interface, ECG amps, module extension cable, shielded and unshielded Ag-AgCl electrodes
MP160 System
Wired | Baroreflex Sensitivity Analysis
MP160 plus AcqKnowledge with NIBP amp, interface and ECG amp
MP36R System
MP36R System
MP36R System
MP160 System
MP160 System
MP160 System
MP160 System
Wireless | Baroreflex Sensitivity Analysis
MP160 System with noninvasive BP amp and ECG transmitter with disposable electrodes
MP160 System
Wireless | Baroreflex Sensitivity Analysis
MP160 plus AcqKnowledge with NIBP amp, interface and wireless ECG amp
MP160 System
MP160 System
MP36R System
Animal | Baroreflex Sensitivity Analysis
MP36R with AcqKnowledge plus pressure transducer, electrode lead adapter, and unipolar needle electrodes
MP160 System
Animal | Baroreflex Sensitivity Analysis
MP160 plus AcqKnowledge with DA and ECG amps, general BP transducer and module extension cable
Stellar
Animal | Baroreflex Sensitivity Analysis
Schedule, Record, and Analyze Stellar Telemetry Data with AcqKnowledge
MP36R System
MP160 System
Stellar
BSL System with MP36 and hardware for 11 guided lessons plus 14 dynamic lessons and student-designed Human Physiology experiments. Use the power of the BSL Human Physiology Teaching System to conduct the most widely studied responses in physiology teaching labs. Lessons target the circulatory system, respiratory system, muscular function, brain function, ANS, exercise physiology and […]
View AllBIOPAC tools are used for studies in a variety of different fields and disciplines. AcqKnowledge software is one of our universally applicable tools, used by thousands of labs around the world and cited in thousands of peer reviewed publications, such as the following studies… The psychophysiology of guilt in healthy adults. Cognitive, Affective, & Behavioral Neuroscience, 1-18. […]
BIOPAC’s comprehensive 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 for extracting, […]
Read All