Interferência eletromagnética (EMI) em equipamentos eletromédicos (EEMs) proveniente da telefonia celular.

Abstract

The electromagnetic interference (EMI) is the occurrence of functional alterations in electronic equipment when these are immersed in electromagnetic fields. In this work possible alterations in the electrical medical equipment (EEMs) functioning had been studied when submitted to electromagnetic fields in the frequency band 850MHz, as well as verifying the levels of electromagnetic radiation emitted by the proper medical equipment. Moreover a survey of the intensity of the hospital environment electromagnetic fields in the absence of cellular telephones and medical equipment was made. For this they had been used EEMs disponibilizados in the UTI of the Antonio Targino Hospital for the directors of this hospital and generating equipment of electromagnetic radiation, to know: two cellular telephones of system AMPS, being analogical and a digital one, operating in maximum power, 600mW, adjusted for the canal of test in the frequency of 835MHz; and an analogical transmitter used in radio base stations of system AMPS operating in the band of 850MHz. With the found results, the research previously carried through that they prove the existence of functional alterations in the medical equipment when they are submitted to the electromagnetic radiation emitted by the cellular ones is ratified. Moreover, it is shown still that the cellular telephones are not only generating of electromagnetic radiation. Some EEMs can generate so intense electromagnetic fields how many the servant for the cellular telephones.