Preliminary survey of the electromagnetic interference environment in hospitals

Boisvert, Peter; Segal, B.; Pavlasek, T.; S, Retfalvi; Sebe, A.; Caron, Paul L.

doi:10.1109/isemc.1991.148219

Cited by 22 publications

(5 citation statements)

References 3 publications

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“…O primeiro deles, o Hospital Alfa, é classificado como diagnóstico Tipo IIA, pois mostrou uma situação bastante delicada em relação a fontes eletromagnéticas externas, mesmo quando todos os EEM estavam em repouso. Tal característica vai ao encontro de conclusões alcançadas por outros trabalhos, que destacam a importante influência de fontes externas, como sinais de rádios FM, TV e de te lefonia celular, no ambiente interno ao EAS (Arnofsky et al, 1995;Boisvert et al, 1991;Cabral e Mühlen, 2002;Davis et al, 1997Davis et al, , 1998Phaiboon e Somkuarnpanit, 2000;Vlach et al, 1995;Young et al, 1997).…”

Section: Resultsunclassified

Avaliação do ambiente eletromagnético em estabelecimentos assistenciais de saúde

Valente¹,

Raizer²

2008

RBEB

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IIIÀ nação brasileira, pela minha formação, a provedora de uma universidade pública e de qualidade. Fica aqui, a minha humilde contribuição como forma de inestimável agradecimento.IV À minha família, pois aquilo que nos une é muito maior do que aquilo que nos divide... Em especial, a Wilson Valente e Eleonora Behr Valente, pois ao seguir seus passos descobri a minha inspiração. V AGRADECIMENTOSAo professor e amigo Adroaldo Raizer, pela maestria com que conduziu esta pesquisa e, acima de tudo, pelo apoio incondicional e confiança sempre explicitamente demonstrada em meu trabalho. Fica aqui, o meu mais sincero obrigado! Aos Amigos do GEMCO, praticamente uma família, tio Rangel, tio Vilson, tio Jamil, Milton, Dalla, Vanessa, Fabiano, Nyland, George, Trompowsky, Adriano, Matheus, Cassias, Mário.Aos professores do IEB-UFSC, Fernando, Renato, Jefferson, Raimes, Fernanda, Morgado, Marino, fundamentais na minha formação, por todo conhecimento transmitido dentro e fora de sala.Ao Prof. Renato Garcia e Kleide Ferreira, pois nunca será esquecido que sob sua supervisão, os primeiros rabiscos deste trabalho foram traçados.Aos Amigos do IEB-UFSC, desde os mais antigos, Lucatelli, Wayne, Sylara, Erlon, Kolzer, Joel, Humberto, Panta, Cássio, Euler, Márcio, Renan, Luciano, Luiz Antônio, Patrícia, Sabrina, Gisele, Marisete, Tibola, Mauro, Domingos, Caliari, Hélio, Bruno, Felipe, Flávio, Ana Paula, Luciane, Angélica, Tarso, até os mais recentes, Bacelar, Raul, Igor, Samir, Daiana, Viviane, Daniel, Fabão, Pedrão, Eduardo, Juliano, Rosele, Márcia, Fabrício, Ivana, Douglas, enfim, todos os que me acompanharam nessa longa jornada.Aos amigos da Technocare, Ana Cláudia, Léo, Kleide, que sempre torceram pelo sucesso deste trabalho (da mesma forma que eu torço pelo deles). Um agradecimento especial a todos que auxiliaram na realização dos ensaios:Matheus, Nyland, Rangel, Cassias, Fabiano, (os super-heróis que hoje estão mais fortes de tanto carregarem caixas e equipamentos), e ainda: Rúbia, Alisson, Juliano, Jean, Júlio, Jairo.Às enfermeiras Eliana, Ana e Neide, por disponibilizarem de seu precioso tempo em prol desta pesquisa.À minha querida Fernanda, tia Janete, e todos os incansáveis que realizaram a correção do texto.Aos meus tios Marcos e Dani, sempre dispostos a ajudar.A todos aqueles que contribuíram de maneira direta ou indireta, que acreditaram nos meus propósitos e cofiaram no meu trabalho, o meu muito obrigado.A Deus, pelas oportunidades da vida presente.VI "If I have been able to see further, it was only because I stood on the shoulders of giants."(carta à Robert Hooke, 5 de fevereiro de 1675) Isaac Newton (1642-1727) VIIResumo da Dissertação apresentada à UFSC como parte dos requisitos necessários para a obtenção do grau de Mestre em Engenharia Elétrica. AVALIAÇÃO DO AMBIENTE ELETROMAGNÉTICO EM ESTABELECIMENTOS ASSISTENCIAIS DE SAÚDE WILSON VALENTE JUNIOR Maio de 2006Orientador: Professor Adroaldo Raizer, Dr. A crescente inserção de tecnologia eletroeletrônica em estabelecimentos assistenciais de saúde (EAS), seja como equipa...

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Section: Resultsunclassified

Avaliação do ambiente eletromagnético em estabelecimentos assistenciais de saúde

Valente¹,

Raizer²

2008

RBEB

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“…Last mentioned features of the fiber-optic sensors can be useful to manufacturers, during design and construction of medical equipments, in order to reduce the effects due to EMI (e.g. occurring during magnetic resonance imaging [31], electrosurgery [32], electrocardiography [33], electromyography [34] and other biomedical fields [35]) as well as to improve electrical safety conditions (prescribed by the standard IEC 60601-1 on medical equipment). Moreover, the operating principle of our OFSs (flow and differential pressure sensors) is based on the detection of the illumination pattern of emitting optical fibers, allowing the development of a system not sensitive to optical power fluctuations.…”

Section: Measurement Science and Technologymentioning

confidence: 99%

A novel fiber-optic measurement system for the evaluation of performances of neonatal pulmonary ventilators

Battista¹,

Scorza²,

Botta³

et al. 2016

Meas. Sci. Technol.

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Published standards for the performance evaluation of pulmonary ventilators are mainly directed to manufacturers rather than to end-users and often considered inadequate or not comprehensive. In order to contribute to overcome the problems above, a novel measurement system was proposed and tested with waveforms of mechanical ventilation by means of experimental trials carried out with infant ventilators typically used in neonatal intensive care units: the main quantities of mechanical ventilation in newborns are monitored, i.e. air flow rate, differential pressure and volume from infant ventilator are measured by means of two novel fiber-optic sensors (OFSs) developed and characterized by the authors, while temperature and relative humidity of air mass are obtained by two commercial transducers. The proposed fiber-optic sensors (flow sensor Q-OFS, pressure sensor P-OFS) showed measurement ranges of air flow and pressure typically encountered in neonatal mechanical ventilation, i.e. the air flow rate Q ranged from 3 l min−1 to 18 l min−1 (inspiratory) and from −3 l min−1 to −18 l min−1 (expiratory), the differential pressure ΔP ranged from −15 cmH2O to 15 cmH2O. In each experimental trial carried out with different settings of the ventilator, outputs of the OFSs are compared with data from two reference sensors (reference flow sensor RF, reference pressure sensor RP) and results are found consistent: flow rate Q showed a maximum error between Q-OFS and RF up to 13 percent, with an output ratio QRF/QOFS of not more than 1.06 ± 0.09 (least square estimation, 95 percent confidence level, R2 between 0.9822 and 0.9931). On the other hand the maximum error between P-OFS and RP on differential pressure ΔP was lower than 10 percent, with an output ratio ΔPRP/ΔPOFS between 0.977 ± 0.022 and 1.0 ± 0.8 (least square estimation, 95 percent confidence level, R2 between 0.9864 and 0.9876). Despite the possible improvements, results were encouraging and suggested the proposed measurement system can be considered suitable for performances evaluation of neonatal ventilators and useful for both end-users and manufacturers.

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“…After verification of interferences in medical equipments, the following studies [3], [4] focused on characterizing the electromagnetic environment of hospitals. Most of the studies measured high-frequency electric field levels and identified the influence of sources outside the hospital, especially those related to communication systems such as radio and TV broadcasters, and mobile telephony.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic field environment in a typical hospital

Escobar

Cadavid

2010

2010 Ieee Andescon

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The increase of electromagnetic fields sources in susceptible environments, such as hospitals, has led to researchers around the world to quantify the potential risk of electromagnetic interference on medical equipment. To reduce risks in these equipments, it is important to know the electromagnetic field environment that can be found in the hospitals and clinics. In this paper, the results of electromagnetic field measurements, both low and high frequency, carried out in different departments of a large hospital are presented. The results show that power frequency magnetic field in some rooms was higher than immunity test levels established by international standard for medical devices. However, the high frequency electric field environment in all rooms measured was lower than international standard.

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Preliminary survey of the electromagnetic interference environment in hospitals

Cited by 22 publications

References 3 publications

Avaliação do ambiente eletromagnético em estabelecimentos assistenciais de saúde

Avaliação do ambiente eletromagnético em estabelecimentos assistenciais de saúde

A novel fiber-optic measurement system for the evaluation of performances of neonatal pulmonary ventilators

Electromagnetic field environment in a typical hospital

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