Estimation of the respiratory activity from orthogonal ECG leads

Anna M. Bianchi, G. D. Pinna, M. Croce, M. T. La Rovere, R. Maestri, E. Locati, S. Cerutti

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


In the present work a method is proposed for the estimation of the respiratory signal from the three ECG orthogonal leads. The vectorcardiogram loop was evaluated in correspondence of each QRS complex (in a time window of 120 ms centred around the R wave). The centre of gravity and the inertial axes of each loop were calculated. A set of 12 parameters (3 spatial coordinates of the centre of gravity and 3 directions of the 3 inertial axes) was obtained for each cardiac beat. The first principal component of such a set of data was the estimation of the respiratory activity. The obtained signal was compared with the quantitative respiration recording and the cross-correlation index C was a measure of the goodness of the estimation. The mean value of C was 0.9 ± 0.26, indicating a good matching between the recorded and the estimated signals.

Original languageEnglish
Title of host publicationComputers in Cardiology
EditorsA. Murray
Number of pages4
Publication statusPublished - 2003
EventComputers in Cardiology 2003 - Thessaloniki Chalkidiki, Greece
Duration: Sep 21 2003Sep 24 2003


OtherComputers in Cardiology 2003
CityThessaloniki Chalkidiki

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Software


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