EMF-Portal | Improved technique for monitoring electrocardiograms during exposure to radio-frequency radiation

Improved technique for monitoring electrocardiograms during exposure to radio-frequency radiation tech./dosim.

By: Watkinson WP, Gordon CJ

Published in: Am J Physiol Heart Circ Physiol 1986; 250 (2) Pt 2: H320-H324

Aim of study (acc. to author)

To report the results of a study that employed an improved technique to monitor and analyze the electrocardiogram (ECG) during radiofrequency irradiation. The electrodes used for monitoring the ECG during exposure were fabricated from carbon-loaded Teflon wire, a semiconductor material that does not perturb the electromagnetic radiofrequency field.

Endpoint

Exposure

Exposure	Parameters
Exposure 1: 600 MHz Modulation type: CW Exposure duration: 15 min low power, 15 min high power	SAR: 1 W/kg mean (whole body) (+/- 0.005 W/kg) SAR: 7.4 W/kg mean (whole body) (+/- 0.1 W/kg)

Modulation type	CW

Exposure source	waveguide WR 1500, 60 cm long
Sham exposure	A sham exposure was conducted.
Additional info	experimental protocol consisting of 4 consecutive 15 min segments: 1) control 2) low power 3) high power 4) recovery

Measurand	Value	Type	Method	Mass	Remarks
SAR	1 W/kg	mean	calculated	whole body	+/- 0.005 W/kg
SAR	7.4 W/kg	mean	calculated	whole body	+/- 0.1 W/kg

Methods Endpoint/measurement parameters/methodology

Investigated system:

Investigated organ system:

Time of investigation:

Main outcome of study (acc. to author)

There were no artifacts or arrhythmias in the ECGs of the exposed rats. There was a significant linear correlation between heart rate and body temperature in the exposed group that was not present in the control group. The study has demonstrated an improved technique for monitoring ECG function during exposure to radiofrequency irradiation.

Study character:

Study funded by

not stated/no funding