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Estimation of microinhomogeneity of conduction impairment by wavelet analysis during early phase of myocardial ischemia in pigs
https://fmu.repo.nii.ac.jp/records/2001725
https://fmu.repo.nii.ac.jp/records/20017256c108213-cf81-4118-a439-64292887f0fd
| 名前 / ファイル | ライセンス | アクション |
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FksmJMedSci_52_p87.pdf (1.0 MB)
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| Item type | デフォルトアイテムタイプ（フル）fmu(1) | |||||||||||||||
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| 公開日 | 2011-05-26 | |||||||||||||||
| タイトル | ||||||||||||||||
| タイトル | Estimation of microinhomogeneity of conduction impairment by wavelet analysis during early phase of myocardial ischemia in pigs | |||||||||||||||
| 言語 | en | |||||||||||||||
| 作成者 |
Furukawa, Tetsuo
× Furukawa, Tetsuo
× Maehara, Kazuhira
× Saito, Shuichi
× Ishibashi, Toshiyuki
× Maruyama, Yukio
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| 権利情報 | ||||||||||||||||
| 権利情報 | © 2006 The Fukushima Society of Medical Science | |||||||||||||||
| 内容記述 | ||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||
| 内容記述 | Ventricular fibrillation (VF) is most frequent in the very early phase in acute coronary occlusion, and is triggered by the re-entrant mechanism in this phase. An inhomogeneous conduction in the ischemic myocardium would be substrates for re-entry. The aim of this study was to examine the relationship between the severity of irregularities of the QRS complex and VF. Eleven pigs were analyzed, and the heart was fixed in the pericardial cradle. Ag-AgCl bipolar electrodes were fixed on the epicardium in ischemic and non-ischemic regions. The proximal portion of the left anterior descending coronary artery was occluded for one hour. Electrocardiograms (ECGs) were continuously recorded on a magnetic tape, and wavelet analysis was performed on signal-averaged ECG (25 beats) every 60 sec after the experiment. The number of local maxima (N) and the duration between the first and the last local maximum (D) were automatically measured. N and D significantly increased in the ischemic area, but not in the non-ischemic area. N and D increased approximately twofold just before the occurrence of VF in 8 fibrillated pigs (p<0.01, each). There were significant positive linear relationships between the rate of increase in N and D to VF and basal heart rate before coronary occlusion (r=0.90, p <0.01 in N, r=0.84, p <0.01 in D at 160 Hz). These results suggest that there would be a threshold inhomogeneous conduction for the occurrence of VF and an increase in heart rate would accelerate the inhomogeneous conduction in acute myocardial ischemia. | |||||||||||||||
| 出版者 | ||||||||||||||||
| 出版者 | The Fukushima Society of Medical Science | |||||||||||||||
| 言語 | ||||||||||||||||
| 言語 | eng | |||||||||||||||
| 書誌情報 |
en : Fukushima Journal of Medical Science 巻 52, 号 2, p. 87-102, 発行日 2006-12 |
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| 関連情報 | ||||||||||||||||
| 関連タイプ | isIdenticalTo | |||||||||||||||
| 識別子タイプ | DOI | |||||||||||||||
| 関連識別子 | https://doi.org/10.5387/fms.52.87 | |||||||||||||||
| 関連情報 | ||||||||||||||||
| 識別子タイプ | PMID | |||||||||||||||
| 関連識別子 | 17427760 | |||||||||||||||
| 関連情報 | ||||||||||||||||
| 識別子タイプ | ICHUSHI | |||||||||||||||
| 関連識別子 | 2007203251 | |||||||||||||||
| 資源タイプ | ||||||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||||
| 資源タイプ | journal article | |||||||||||||||
| 出版タイプ | ||||||||||||||||
| 出版タイプ | VoR | |||||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||||||
| 収録物識別子 | ||||||||||||||||
| 収録物識別子タイプ | PISSN | |||||||||||||||
| 収録物識別子 | 0016-2590 | |||||||||||||||
| 収録物識別子 | ||||||||||||||||
| 収録物識別子タイプ | EISSN | |||||||||||||||
| 収録物識別子 | 2185-4610 | |||||||||||||||
| 収録物識別子 | ||||||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||||||
| 収録物識別子 | AA0065246X | |||||||||||||||
| 主題 | ||||||||||||||||
| 主題Scheme | Other | |||||||||||||||
| 主題 | wavelet analysis | |||||||||||||||
| 主題 | ||||||||||||||||
| 主題Scheme | Other | |||||||||||||||
| 主題 | inhomogeneous conduction | |||||||||||||||
| 主題 | ||||||||||||||||
| 主題Scheme | Other | |||||||||||||||
| 主題 | acute myocardial ischemia | |||||||||||||||
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| 主題Scheme | MeSH | |||||||||||||||
| 主題 | Animals | |||||||||||||||
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| 主題Scheme | MeSH | |||||||||||||||
| 主題 | Electrocardiography | |||||||||||||||
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| 主題Scheme | MeSH | |||||||||||||||
| 主題 | Female | |||||||||||||||
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| 主題Scheme | MeSH | |||||||||||||||
| 主題 | Heart Conduction System | |||||||||||||||
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| 主題Scheme | MeSH | |||||||||||||||
| 主題 | Heart Rate | |||||||||||||||
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| 主題Scheme | MeSH | |||||||||||||||
| 主題 | Male | |||||||||||||||
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| 主題Scheme | MeSH | |||||||||||||||
| 主題 | Myocardial Ischemia | |||||||||||||||
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| 主題Scheme | MeSH | |||||||||||||||
| 主題 | Swine | |||||||||||||||
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| 主題Scheme | MeSH | |||||||||||||||
| 主題 | Ventricular Fibrillation | |||||||||||||||
