PMID: 11345094May 10, 2001Paper

The interference threshold of cardiac pacemakers in electric 50 Hz fields

Journal of Medical Engineering & Technology
A Scholten, J Silny

Abstract

The aim of the study was to determine a 'worst-case' and a 'real-case' interference threshold for implanted cardiac pace-makers (CPM) in electric 50 Hz fields as they appear in high-voltage plants, e.g. beneath high voltage overhead lines. For this purpose the resulting electrical potential distribution within the thorax area of volunteers from an external homogeneous electrical 50 Hz field was measured. Different factors such as different body geometries as well as inspiration and expiration of the lung were considered. Measurements showed that 1 per 1 kV m(-1) unimpaired electrical field strength (RMS) an interference voltage of about 180 microVpp as real-case value an 400 microVpp as worst-case value would occur at the input of a unipolar ventricularly controlled, left pectorally implanted cardiac pacemaker. Therefore, it is possible under worst-case conditions but unlikely under practice-relevant conditions that an implanted cardiac pacemaker is disturbed by present electric 50 Hz fields beneath high voltage overhead lines.

References

Nov 1, 1984·Pacing and Clinical Electrophysiology : PACE·W Irnich

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Citations

Jun 15, 2006·Physiological Measurement·A BabouriJ P Andretzko
Nov 12, 2010·International Archives of Occupational and Environmental Health·M SouquesJ Lambrozo
Jan 7, 2009·Journal of Clinical Monitoring and Computing·A BabouriL Guendouz
Feb 9, 2012·Pacing and Clinical Electrophysiology : PACE·Leena KorpinenVesa Virtanen

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