Effect of vibrations with various duration exposure on the P-R interval of ECG

ECG analysis of a human body subjected to vertical vibrations of various durations was carried out. Results obtained from a representative subject show that the exposure period has different effects on the P-R time interval of the ECG waves. Vibration increases the Percent Normalized Difference (PND...

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Bibliographic Details
Published inBio-medical materials and engineering Vol. 11; no. 3; pp. 233 - 240
Main Authors Othman, M O, Al-Nashash, H, Qassem, W
Format Journal Article
LanguageEnglish
Published Netherlands 2001
Subjects
Biomedical Engineering
Electrocardiography - statistics & numerical data
Heart Conduction System - physiology
Humans
Models, Cardiovascular
Signal Processing, Computer-Assisted
Time Factors
Vibration - adverse effects
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Summary:ECG analysis of a human body subjected to vertical vibrations of various durations was carried out. Results obtained from a representative subject show that the exposure period has different effects on the P-R time interval of the ECG waves. Vibration increases the Percent Normalized Difference (PND) of the P-R time interval with time till it reaches a steady state value of 29.5. An increase of the exposure duration increases the time constant, while the steady state value remains constant. The PND behavior can be mathematically modeled as a first order system.
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ISSN:0959-2989