A comparison between R-R and R-T variability signals in normal and pathological subjects

S. Cerutti, G. Baselli, M. G. Signorini, M. L. Finocchiaro, F. Lombardi, N. Montano, A. Malliani

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Power spectrum analysis of the RR variability (RRV) signal is compared with the spectrum obtained from the RT variability (RTV) signal. The analysis is carried out on a population of 16 normal subjects and 24 patients, 15 days after an acute episode of myocardial infarction (MI). While in normal subjects the RTV signal is satisfactorily correlated with RRV, presenting the same trend in a rest/tilt maneuver, in MI patients such a correlation strongly decreases. This finding demonstrates that the pathophysiological link between the two variability signals is complex, and local properties of the ventricular cells may be accounted for by the noticed difference in their behavior. RRV and RTV signal analysis can be used to investigate the relations between the beat-to-beat variability of ventricular depolarization and repolarization durations.

Original languageEnglish
Title of host publicationComputers in Cardiology
PublisherPubl by IEEE
Number of pages4
ISBN (Print)0818622253
Publication statusPublished - May 1991
EventComputers in Cardiology - Proceedings - Chicago, IL, USA
Duration: Sep 23 1990Sep 26 1990


OtherComputers in Cardiology - Proceedings
CityChicago, IL, USA

ASJC Scopus subject areas

  • Software
  • Cardiology and Cardiovascular Medicine

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