心室頻拍の臨床電気生理学的誘発の機序に関する研究 Mechanisms of ventricular tachycardia induced by electrophysiological methods in humans

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著者

    • 加藤, 法喜 カトウ, ノリヨシ

書誌事項

タイトル

心室頻拍の臨床電気生理学的誘発の機序に関する研究

タイトル別名

Mechanisms of ventricular tachycardia induced by electrophysiological methods in humans

著者名

加藤, 法喜

著者別名

カトウ, ノリヨシ

学位授与大学

北海道大学

取得学位

医学博士

学位授与番号

乙第3878号

学位授与年月日

1991-03-25

注記・抄録

博士論文

To clarify the mechanisms of ventricular tachycardia (VT) in humans, sixty patients (average age, 43.9±15.6 years) with life-threatening VT were examined electrophysiologically. Multielectrode catheters were inserted to the heart and programmed electical stimulation was performed to induce VT. VT was inducible in thirty (50%) of 60 patients. IN twenty-nine (93.6%) of these 30 patients VT was induced by ventricular extrastimuli, suggesting that the most important mechanism for the induction of VT is reentry. Backgroud of VT was idiopathic (IDIO) in 36 patients. The remaining 24 patients had underlying heart disease (HD), and only two of them had old myocardial infarction ; this was considerably different from that in USA and Europe in which more than 70% of patients with VT have ischemic heart disease. lnduction rate VT (IRVT) in IDIO and HD were both 50%. IRVT in 46 sustained VT was 63% and it was significantly higher than that in 14 non-sustained VT (7.1%). The QRS morphology of VT was complete right bundle branch block (RBBB) pattern in 33 patients [with left axis deviation (LAD) ; 14 and without LAD ; 19] and left bundle branch block (LBBB) pattern in 24 patients. IRVT was significantly high in RBBB with LAD (92.9%) compared with RBBB (63.6%), RBBB without LAD (42.1%) and LBBB (37.5%). Both cardiothoracic ratio and ejection fraction had no relationship to IRVT.

26, 4, 4, 5p.

Hokkaido University(北海道大学). 博士(医学)

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各種コード

  • NII論文ID(NAID)
    500000073674
  • NII著者ID(NRID)
    • 8000000073871
  • DOI(NDL)
  • 本文言語コード
    • jpn
  • NDL書誌ID
    • 000000237988
  • データ提供元
    • 機関リポジトリ
    • NDL-OPAC
    • NDLデジタルコレクション
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