Medical/biological study (experimental study)

The cardiac effects of a mobile phone positioned closest to the heart. med./bio.

By: Tamer A, Gunduz H, Ozyildirim S

Published in: Anadolu Kardiyol Derg 2009; 9 (5): 380-384

Aim of study (acc. to author)

To study the effect of mobile phone on human cardiac electrical activity while the mobile phone is located on the precordium.

Background/further details

A total of 24 healthy volunteers were included. In a first step, electrocardiogram (ECG) and blood pressure recordings of the subjects were performed without mobile phone (baseline). Then, the mobile phone was located on the chest and the ECG and blood pressure were recorded while the mobile phone was off, on, and ringing (silent mode). In a second step, heart rhythm and blood pressure were recorded for 30 minutes without mobile phone, and when the mobile phone was "on" at the precordial location.

Endpoint

effects on the cardiovascular system: hemodynamic (heart rate, blood pressure) and cardiac electrical activity (P wave and QT interval dispersion)

Exposure

- 900–1,800 MHz
- mobile communications
- mobile phone

Exposure	Parameters
Exposure 1: 900–1,800 MHz	SAR: 2 W/kg

Exposure 1

Main characteristics

Frequency	900–1,800 MHz
Type	electromagnetic field

Exposure setup

Exposure source	cellular phone Nokia 2600
Setup	phone placed in a pocket suspended from the neck, placed in the left parasternal area; phone set in silent mode

Parameters

Measurand	Value	Type	Method	Mass	Remarks
SAR	2 W/kg	-	-	-	-

Exposed system:

human
partial body: chest (heart reagion)

Methods Endpoint/measurement parameters/methodology

effects on the cardiovascular system: ECG: heart rate variability, QT interval, P wave dispersion and blood pressure

Investigated system:

investigation on living organism

Investigated organ system:

cardiovascular system

Time of investigation:

before exposure
during exposure

Main outcome of study (acc. to author)

The mobile phone had no effect on hemodynamic and cardiac electrical activity parameters when it was positioned on the chest in immediate proximity to the heart, and it did not cause cardiac autonomic dysfunction (i.e. heart rate variability) in healthy adult subjects.

Study character:

medical/biological study
experimental study
full/main study

Study funded by

not stated/no funding

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