Emergency services personnel, family members, or patients often carry and use digital cellular phones on sites of emergencies. As there are reported effects on implanted pacemakers and cardioverter defibrillators, the influence of mobile phones on automated external defibrillators was examined.
Automated external defibrillator models were bench tested for their correct decision to or not to advise a shock, while being exposed to electromagnetic interference from a mobile phone with 2 W or a portable cellular phone with 8 W transmitting power. The sensitivity and specificity of electrocardiogram analysis systems were studied, with shockable and non-shockable rhythms provided by an electrocardiogram simulator and on two human subjects with normal sinus rhythm.
| Frequency | 906.2 MHz |
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| Exposure source | |
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| Setup | The mobile phones were placed in three different positions, on the AED, between patient electrodes and at 1 m distance from AED. |
| Additional info | The testing rhythms were generated by an electrocardiogram (EEG) simulator which was contained in a grounded box made out of 2 mm sheet iron to create a Faraday cage. A 5 mm PVC sheet was mounted on top of the box with electrodes separated at 30 cm distance. Inside the cage a 50 Ohm manikin load box was connected between the simulator and the outer electrodes. The automated external defibrillators (AEDs) were connected to the stimulator with their original diaposable defibrillation electrodes. |
| Frequency | 906.2 MHz |
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| Exposure source |
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Shock advisory systems of automated external defibrillators are not susceptible to electromagnetic interference of 900 MHz mobile phones. Voice prompts, however, could be distorted by the operation of nearby digital cellular phones. This issue needs to be addressed during automated external defibrillator training.
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