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Related Experiment Videos

Automatic determination of systolic time intervals

J J Donders, G M van Der Hoeven, B Snoeck

    Bibliotheca Cardiologica
    |January 1, 1976
    PubMed
    Summary

    A new automated system accurately measures systolic time intervals (STI) during exercise, potentially replacing manual analysis for cardiac function assessment.

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    Area of Science:

    • Cardiology
    • Biomedical Engineering
    • Signal Processing

    Background:

    • Systolic time intervals (STI) offer insights into cardiac function.
    • Non-invasive measurement during exercise is valuable but challenging.
    • Manual analysis of STI is time-consuming and prone to variability.

    Purpose of the Study:

    • To develop an automated processing system for determining STI.
    • To enable accurate STI measurement during uninterrupted exercise.
    • To assess the system's potential to replace human observers.

    Main Methods:

    • Developed a modular FORTRAN IV computer program for STI analysis.
    • Implemented a preprocessing unit for automatic recording and signal optimization.
    • Utilized signal processing techniques, including correlation, to identify key points and artefacts.

    Main Results:

    • The system automatically determines STI from short (8-sec) recordings at various exercise loads.
    • It identifies disturbances and artefacts, providing error indicators.
    • Preliminary results suggest the system's efficacy in STI estimation.

    Conclusions:

    • An automated system for STI measurement during exercise is feasible.
    • This system shows promise for objective and efficient cardiac function assessment.
    • The automated approach may enhance the reliability and replace manual STI analysis.

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