Abstract
A new procedure has been developed to 1) investigate the coupling between arterial blood pressure and heart rate variability in daily life and 2) identify the baroreflex contribution to such a coupling. The algorithm is based on the estimation of the Cross-Mutual Information (CMI) between systolic blood pressure (SBP) and RR-Interval (RRI) beat-to-beat values. CMI has been selected because of its capability to quantify both linear and nonlinear components of the coupling between variables. This procedure has been used to analyze data recorded in spontaneously behaving cats before and seven days after the surgical opening of the baroreflex loop as obtained by a sino-aortic denervation. Use of CMI indicates that over a time scale in the order of minutes the arterial baroreflex is the major determinant of the SBI-RRI link, accounting for about 2/3 of the total (linear and nonlinear) coupling measured between these variables.
| Original language | English |
|---|---|
| Title of host publication | Computers in Cardiology |
| Editors | A. Murray |
| Pages | 57-60 |
| Number of pages | 4 |
| Volume | 29 |
| Publication status | Published - 2002 |
| Event | Computers in Cardiology 2002 - Memphis, TN, United States Duration: Sep 22 2002 → Sep 25 2002 |
Other
| Other | Computers in Cardiology 2002 |
|---|---|
| Country/Territory | United States |
| City | Memphis, TN |
| Period | 9/22/02 → 9/25/02 |
ASJC Scopus subject areas
- Software
- Cardiology and Cardiovascular Medicine