Heart Rate Variability Analysis of Patients With Idiopathic Left Ventricular Outflow Tract Tachycardia : Role of Triggered Activity
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概要
- 論文の詳細を見る
There have been several reports with respect to idiopathic ventricular tachycardias(VTs)originating from the left ventricular outflow tract(LVOT). A previous report suggested that triggered activity plays a partial role in idiopathic LVOT tachycardia from the electrophysiological as well as the electropharmacological viewpoint. However, the exact role of triggered activity in this type of VT remains unknown. In the present study the relationship of the frequency of premature ventricular contractions(PVCs)and heart rate was examined and heart rate variability(HRV)was analyzed in 2 cases of LVOT tachycardia using 24-h Holter electrocardiographic(ECG)monitoring. The relation between the PVCs frequency and heart rate showed a persistently positive correlation, indicating frequent PVCs as heart rate increased. In HRV analysis, NN_<50>(%), a time-domain variable of parasympathetic activity, showed no change prior to ventricular arrhythmias. In frequency-domain analysis of HRV, the high frequency(HF)component tended to fall prior to repetitive PVCs and VTs. The ratio of the low frequency to high frequency(LF/HF)components increased prior to single PVCs, repetitive PVCs and VTs. Sympathetic predominance predisposes the genesis of these dinds of arrhythmias originating from the LVOT and its suggested that triggered activity plays an important role in LVOT tachycardia, at least in its initiation.
- 社団法人日本循環器学会の論文
- 1999-07-20
著者
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Maruyama Toru
Institute Of Health Science Kyushu University
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Maruyama Toru
九州大学 医学研究院病態修復内科学分野
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Kaji Yoshikazu
Medicine And Biosystemic Science Kyushu University Graduate School Of Medical Sciences
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Kaji Yoshikazu
九州大学 医学研究院病態修復内科学
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Kaji Yoshikazu
Department Of Medicine And Biosystemic Science Kyushu University
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FUJINO Takehiko
Institute of Health Science, Kyushu University
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KANAYA Shozo
Institute of Health Science, Kyushu University
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Kanaya Shozo
Institute Of Health Science Kyushu University
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Maruyama Toru
The First Department of Medicine, Kyushu University
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Kaji Yoshikazu
The First Department of Medicine, Kyushu University
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Niho Yoshiyuki
The First Department of Medicine, Kyushu University
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Simoike Eimei
Department Of Medicine And Biosystemic Science Kyushu University Graduate School Of Medical Sciences
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Kanda Yoshinobu
Department Of Hematology And Oncology Graduate School Of Medicine University Of Tokyo
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Kanda Yoshinobu
Department Of Cell Therapy And Transplantation Medicine University Of Tokyo Hospital
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Ueda Norihiro
Department Of Biosystemic Science And Medicine Kyushu University Graduate School Of Medical Sciences
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Fujino T
Institute Of Rheological Function Of Foods Co Ltd
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Niho Y
Kyushu Univ. Graduate School Of Medical Sci. Fukuoka City Jpn
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Niho Y
First Department Of Internal Medicine Chihaya Hospital
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Kaji Yoshikazu
The First Department Of Internal Medicine Faculty Of Medicine Kyusyu University
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Shimoike Eimei
The First Department of Internal Medicine, Kyushu University School of Medicine
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Ueda Norihiro
The First Department of Internal Medicine, Kyushu University School of Medicine
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Fujino Takehiko
The Institute Of Rheological Functions Of Food Co. Ltd.
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Niho Yoshiyuki
The First Department Of Internal Medicine Faculty Of Medicine Kyushu University
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Maruyama Tohru
Institute Of Health Science Kyushu University
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Kaji Yoshikazu
First Department Of Internal Medicine Faculty Of Medicine Kyushu University
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Ueda Norihiro
Department Of Medicine And Biosystemic Science Kyushu University Graduate School Of Medical Sciences
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Uesaka Nobuhiro
Department Of Biosystemic Science And Medicine Kyushu University Graduate School Of Medical Sciences
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Maruyama Tohru
The Institute Of Rheological Functions Of Food Co. Ltd.
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Fujino Takehiko
Department Of Physiology Nippon Medical School Tokyo
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Maruyama T
Institute Of Health Science Kyushu University
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Niho Yoshiyuki
Medicine And Biosystemic Science Kyushu University Graduate School Of Medical Sciences
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Fujino Takehiko
Institute For The Rhelogical Functions Of Foods
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Kanaya Syozo
Institute Of Health Science Kyushu University
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Kikushige Yoshikane
Medicine And Biosystemic Science Kyushu University Graduate School Of Medical Sciences
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Fujino Takehiko
First Dept Of Internal Medicine Kyushu University
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Kaji Yoshikazu
Division Of Hematology Saitama Medical Center Jichi Medical University
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Yamamoto K
Department Of Hematology And Oncology Graduate School Of Medicine University Of Tokyo
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Kaji Yoshikazu
The First Departrnent Of Internal Medicine Kyushu University Fukuoka
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