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Mechatronics pp 599-606 | Cite as

Systolic Time Intervals Detection and Analysis of Polyphysiographic Signals

  • Anna Strasz
  • Wiktor Niewiadomski
  • Małgorzata Skupińska
  • Anna Gąsiorowska
  • Dorota Laskowska
  • Rafał Leonarcik
  • Gerard Cybulski
Conference paper

Abstract

The newly developed computer program allows the continuous measurement of the following systolic time intervals (STI): PEP – preejection period, Q − S2 - time between trough of Q wave and aortic valve closure, Q − D - time between trough of Q wave and dicrotic notch, S2 − D - time between aortic valve closure and dicrotic notch, as well as QQ interval. The program was tested on the recordings obtained in 30 young, healthy subjects remaining in supine position who performed twice two-minute isometric handgrip (HG). First HG was followed by four-minute rest, second HG by two-minute occlusion of the working arm. Since there were distinct oscillation in the time course of Q − S2 intervals and the time course of Q − D intervals was relatively smooth, we suggested that S2 and D might reflect different events which is in contrary to common notation.

Keywords

Characteristic Point Develop Computer Program Systolic Time Interval Common Notation Aortic Valve Closure 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Anna Strasz
    • 1
  • Wiktor Niewiadomski
    • 1
    • 2
  • Małgorzata Skupińska
    • 3
  • Anna Gąsiorowska
    • 1
    • 4
  • Dorota Laskowska
    • 1
  • Rafał Leonarcik
    • 1
  • Gerard Cybulski
    • 1
    • 3
  1. 1.Department of Applied PhysiologyMossakowski Medical Research Centre of PASWarsawPoland
  2. 2.Department of Experimental and Clinical PhysiologyMedical University of WarsawWarsawPoland
  3. 3.Institute of Metrology and Biomedical Engineering Department of MechatronicsWarsaw University of TechnologyWarsawPoland
  4. 4.Laboratory of Preclinical Studies in Neurodegenerative DiseasesNencki Institute of Experimental BiologyWarsawPoland

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