| Japanese |
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| Title | 右室心内膜ペーシング例における左右心室収縮様式の検討 - 位相解析法を用いて - |
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| Subtitle | 原著 |
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| Authors | 田淵博已*, 村田啓*, 外山比南子*, 村木俊雄*, 丹野宗彦*, 千葉一夫*, 山田英夫*, 大川真一郎**, 上田慶二** |
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| Authors(kana) | |
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| Organization | *東京都養育院附属病院核医学放射線部, **診療第一部 |
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| Journal | 核医学 |
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| Volume | 20 |
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| Number | 3 |
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| Page | 267-276 |
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| Year/Month | 1983/4 |
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| Article | 原著 |
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| Publisher | 日本核医学会 |
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| Abstract | 「要旨」 右室心内膜ペーシング例に位相解析を行い, 左右心室収縮様式の特徴について検討した. ペーシング11例, 正常10例および左脚ブロック7例の位相解析上, 正常例では右室流出路の位相の軽度遅延を認めるものの左右心室の位相はほぼ同時であった. これに対し, 左脚ブロック例では左室全体の明らかな位相の遅延を認めた. 一方, ペーシング例では全例において右室心尖部の位相が最も早く, 左右心室基部に向って収縮が波状に伝播する傾向がみられた. ペーシング時の心電図QRS波形による左右心室の位相差について検討したところ, RS型で位相差の少ない症例が多くみられたが, RS型とLBBB型間に有意差は認められなかった. ペーシングレート変換による左右心室の位相は, 9例中6例でペーシングレートが増すにつれて左室の位相が遅延する傾向がみられた. 以上, 位相解析法はペーシング例の心室収縮様式の解明に有用な方法であると考えられた. |
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| Practice | 臨床医学：一般 |
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| Keywords | phase analysis, right ventricular endocardial pacing, left bundle branch block, QRS wave form, pacing rate |
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| English |
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| Title | Analysis of the Left and Right Ventricular Contraction Patterns in the Patients with Right Ventricular Endocardial Pacing |
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| Subtitle | Original Articles |
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| Authors | Hiromi TABUCHI*, Hajime MURATA*, Hinako TOYAMA*, Toshio MURAKI*, Munehiko TANNO*, Kazuo CHIBA*, Hideo YAMADA*, Shinichiroh OHKAWA**, Keiji UEDA** |
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| Authors(kana) | |
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| Organization | *Department of Nuclear Medicine and Radiological Sciences and **Department of Internal Medicine Tokyo Metropolitan Geriatric Hospital |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 20 |
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| Number | 3 |
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| Page | 267-276 |
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| Year/Month | 1983/4 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | [Summary] Contraction patterns between left and right ventricles were evaluated using phase analysis in the patients with right ventricular endocardial pacing (RVEP). Phase images were compared between 11 cases of RVEP, 10 cases of normal control (NC) and 7 cases of left bundle branch block (LBBB). NC group showed nearly simultaneous contraction between both ventricles although contraction of right ventricular outflow tract was slightly delayed. LBBB group showed markedly delayed contraction of the whole LV compared with the contraction of RV. On the other hand, all cases of RVEP group showed initial contraction at apex of RV and then wavelike spread of contraction to the basal portions of both ventricles. Thus, three groups were clearly separated on the phase image. QRS wave forms of the electrocardiogram at pacing were classified into 4 types (RBBB, RS, S and LBBB) and phase difference was compared between each type. Several cases of RS type showed little phase difference between LV and RV, however, there was no significant difference between LBBB and RS type. Phase difference between LV and RV was studied at various pacing rates in 9 cases. In 6 out of 9 cases, phase of the left ventricle was delayed in proportion to increasing the pacing rate. Phase analysis was useful to evaluate the ventricular contraction pattern in the patients with RVEP. |
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| Practice | Clinical medicine |
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| Keywords | phase analysis, right ventricular endocardial pacing, left bundle branch block, QRS wave form, pacing rate |
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