| Japanese |
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| Title | 観血的動脈血圧測定システムに対する電磁波の影響について |
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| Subtitle | 原著 |
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| Authors | 桜井淑男*, 米良泰彦**, 仁田坂謙一**, 古幡博***, 谷藤泰正* |
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| Organization | *東京慈恵会医科大学麻酔部, **東京慈恵会医科大学臨床工学部, ***東京慈恵会医科大学医用エンジニアリング研究室 |
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| Journal | 循環制御 |
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| Volume | 23 |
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| Number | 2 |
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| Page | 148-152 |
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| Year/Month | 2002/ |
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| Article | 原著 |
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| Publisher | 日本循環制御医学会 |
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| Abstract | 現有の観血的動脈血圧測定システムに対して*IEC61000-4-3に則り, 放射電磁界イミュニティー試験を行った. 電波暗室内で放射電磁界アンテナ（周波数帯26MHz-1GHz, 強さ3V/m）と観血的動脈血圧測定システム間に3mの距離をとり電磁波の影響を検討した. その結果34-65MHzの周波数帯の電磁波が血圧測定システムのゼロ点を50-100mmHg変動させることを明らかにした. これは他社の観血的動脈血圧測定システムでも同様の結果が示された. 又この電磁波の影響を遮断するためには, シールドチューブまたはPC用フェライトコアをリユースケーブルに装着すれば予防できることを明らかにした. *無線周波電磁エネルギーに対する医用電気機器のイミュニティー試験方法の国際規格 |
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| Practice | 基礎医学・関連科学 |
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| Keywords | Electromagnetic interference, Electromagnetic immunity test, Arterial blood pressure, ICU, Electromagnetic environment |
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| English |
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| Title | Electromagnetic interference with the arterial blood pressure measuring equipment in ICU |
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| Subtitle | |
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| Authors | Yoshio Sakurai, Yasuhiko Mera, Kenichi Nitasaka, Hiroshi Furuhata, Yasumasa Tanifuji |
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| Organization | The Jikei University School of Medicine |
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| Journal | Circulation Control |
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| Volume | 23 |
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| Number | 2 |
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| Page | 148-152 |
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| Year/Month | 2002/ |
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| Article | Original article |
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| Publisher | Japan Society of Circulation Control |
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| Abstract | Our blood pressure measuring equipment showed the abnormal value intermittently in our ICU. EMI （Electromagnetic interference） was suspected to be the cause of the malfunction. Then, based on IEC61000-4-3, the electromagnetic immunity test was performed on our arterial blood pressure measuring equipment. It resulted in the fact that the electromagnetic wave（3V/m, 34-65MHz）increased the zero-point of our equipment up to 50-100 mmHg. It was also demonstrated that the other type of the arterial blood pressure measuring equipment was interfered with by the electromagnetic wave with the similar frequency （3V/m, 45-65MHz）. However, both EMI can be prevented by covering the reusecable of the equipment with the shield tube or PC core. In addition to this result, the Tokyo tower （the center of the broadcast in Tokyo） is located near our hospital so that it is suspected that the electromagnetic environment around our hospital could be very complicated. Therefore, we conclude that EMI is highly considered to be the cause of the equipment malfunction in our ICU. |
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| Practice | Basic medicine |
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| Keywords | Electromagnetic interference, Electromagnetic immunity test, Arterial blood pressure, ICU, Electromagnetic environment |
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