Cardiac repolarization analysis: Immediate response

Josef Halamek, Pavel Jurak, Eleonora Tobaldini, Nicola Montano, Pavel Leinveber

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


The reproducibility of QT parameters was tested on data recorded in subjects undergoing graded head-up tilt. Two QT detection algorithms were tested: D1 - on a beat to beat basis and D2 - on a 10-beats average basis. Relative irreproducibility, defined as STD/mean, in the case of D1 detection was 0.7, 6.3, 10 [%] for QTc, QT/RR slope and QT restitution respectively. With D2 detection it was 0.7, 6.3, and 59 [%] respectively. Conclusion: QT immediate response, i.e. the QT restitution, is reproducible parameter with D1 detection. D2 detection eliminates any information about QT restitution and does not increase the reproducibility of QT slow properties, as QTc and QT/RR slope.

Original languageEnglish
Title of host publicationComputing in Cardiology
Number of pages4
Publication statusPublished - 2013
Event2013 40th Computing in Cardiology Conference, CinC 2013 - Zaragoza, Spain
Duration: Sep 22 2013Sep 25 2013


Other2013 40th Computing in Cardiology Conference, CinC 2013

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Computer Science(all)


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