Abstract
The sequence technique is commonly employed to estimate the baroreflex sensitivity from the analysis of systolic blood pressure (SBP) and RR Interval (RRI) recordings. Traditionally, the RRI+/SBP- and RRI-/SBP+ sequences are excluded from this analysis. In this paper we present a new interpretative model that, through the introduction of the concept of baroreflex SBP set point, proposes a sub-classification of the excluded sequences in " converging" and "diverging" types, depending on whether they point at, or, depart from the SBP set point, respectively. According to the model, also the RRI+/SBP- and RRI-/SBP+ "converging" sequences might be associated with the baroreflex control of circulation. As a first test of the model, we estimated the distribution of the "converging" and "diverging" RRI+/SBP- and RRI-/SBP+ sequences in a group of 10 healthy subjects at rest in a quiet context, where an enhancement of the baroreflex function could be assumed and a predominance of the "converging" sequences could be expected according to the model. Actually the results confirmed a significant prevalence of "converging" type over the "diverging" type sequences (10.6±6.7 vs. 3.3±2.8, mean±sd) in these recordings. Although future studies are needed to experimentally validate this new classification of the RRI+/SBP- and RRI-/SBP+ sequences, our results provide a first positive support to the model.
Original language | English |
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Title of host publication | 2010 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC'10 |
Pages | 1703-1705 |
Number of pages | 3 |
DOIs | |
Publication status | Published - 2010 |
Event | 2010 32nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC'10 - Buenos Aires, Argentina Duration: Aug 31 2010 → Sep 4 2010 |
Other
Other | 2010 32nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC'10 |
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Country/Territory | Argentina |
City | Buenos Aires |
Period | 8/31/10 → 9/4/10 |
ASJC Scopus subject areas
- Biomedical Engineering