Arterial Mechanical Impedance is a Sensitive Stress Response Monitor During General Anesthesia
Hiroshima Journal of Medical Sciences 58 巻 4 号
75-82 頁
2009-12 発行
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全文
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タイトル ( eng ) |
Arterial Mechanical Impedance is a Sensitive Stress Response Monitor During General Anesthesia
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作成者 |
Nakamura Ryuji
Kutluk Abdugheni
Shiba Kenji
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収録物名 |
Hiroshima Journal of Medical Sciences
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巻 | 58 |
号 | 4 |
開始ページ | 75 |
終了ページ | 82 |
収録物識別子 |
[PISSN] 0018-2052
[EISSN] 2433-7668
[NCID] AA00664312
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抄録 |
Arterial mechanical impedance is a characteristic of arterial dynamics that is determined by photoplethysmographic amplitude and direct arterial pressure, while mechanical impedance is indicated by stiffness, viscosity, and inertia. We compared the parameters of mechanical impedance and photoplethysmographic amplitude to estimate the magnitude of stress response in patients undergoing general anesthesia by measuring direct arterial pressure. After sedating each patient with propofol, photoplethysmographic amplitude and mechanical impedance were measured as baseline control values, then 3 min after fentanyl administration (2 μg kg-1 ), the parameters were measured again as post-fentanyl values. Thereafter, a direct laryngoscopy procedure was performed and post-laryngoscopy values for the parameters were determined. The magnitudes of response to each event were compared by using the ratio of the measurements from the preceding event. Then, comparisons of the magnitudes were performed after coordinating each response in the same direction. Our results showed that both stiffness and viscosity of mechanical impedance had greater variations than photoplethysmographic amplitude. In conclusion, we propose stiffness and viscosity derived from arterial mechanical impedance as sensitive parameters to monitor stress responses during general anesthesia.
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著者キーワード |
Plethysmography
Autonomic response
Depth of anesthesia
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NDC分類 |
医学 [ 490 ]
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言語 |
英語
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資源タイプ | 紀要論文 |
出版者 |
Hiroshima University Medical Press
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発行日 | 2009-12 |
権利情報 |
(c) Hiroshima University Medical Press.
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出版タイプ | Version of Record(出版社版。早期公開を含む) |
アクセス権 | オープンアクセス |
収録物識別子 |
[ISSN] 0018-2052
[NCID] AA00664312
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