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To evaluate the pathophysiology of PAVB, clinical and electrophysiological studies were performed in 23 electrocardiographically documented patients (pts). These cases were divided into 3 groups according to the site of the block: supra-His (AH) group, 6 pts; intra-His (HH\u0027) group, 8 pts; and infra-His (HV) group, 9 pts. The 12-lead electrocardiogram (ECG) was normal or slightly abnormal in 12 pts (52.5%). Atrioventricular block (AVB) and intraventricular conduction disturbance were more frequent in the HH\u0027 and HV groups than in the AH group (p\u003c0.05). ECG monitoring also showed transient second degree AVB in 4/6 of the AH, 8/8 of the HH\u0027 and 8/9 of the HV groups. PAVB was initiated by slowing of the atrial rate in 5/6 of the AH group, but by rate increase or a premature atrial contraction in 16/17 of the HH\u0027 and HV groups. The duration of ventricular standstill was longer in the HH\u0027 or HV groups (7.6±3.2sec.) than in the AH (4.7±1.4sec) group. 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発作性房室ブロックの臨床的並びに電気生理学的検討
https://doi.org/10.15114/smj.58.111
https://doi.org/10.15114/smj.58.1113d838be5-480f-4984-816b-a6ba0e6b3a32
名前 / ファイル | ライセンス | アクション |
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n0036472X582111.pdf (841.9 kB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2019-08-16 | |||||
タイトル | ||||||
言語 | ja | |||||
タイトル | 発作性房室ブロックの臨床的並びに電気生理学的検討 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Clinical and Electrophysiological Studies on the Paroxysmal Atrioventricular Block | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Paroxysmal atrio-ventricular block | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Concealed conduction | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Syncope | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Electrophysiological study | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Artificial pacemaker | |||||
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 | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.15114/smj.58.111 | |||||
ID登録タイプ | JaLC | |||||
著者 |
土橋, 和文
× 土橋, 和文× 大江, 透× 下村, 克朗 |
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著者別名 | ||||||
姓名 | Tsuchihashi, Kazufumi | |||||
著者別名 | ||||||
姓名 | Ohe, Tohru | |||||
著者別名 | ||||||
姓名 | Shimomura, Katsuro | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Paroxysmal atrio-ventricular block (PAVB) is known to be one of the most important mechanisms by which Adams-Stokes syndrome is precipitated. To evaluate the pathophysiology of PAVB, clinical and electrophysiological studies were performed in 23 electrocardiographically documented patients (pts). These cases were divided into 3 groups according to the site of the block: supra-His (AH) group, 6 pts; intra-His (HH') group, 8 pts; and infra-His (HV) group, 9 pts. The 12-lead electrocardiogram (ECG) was normal or slightly abnormal in 12 pts (52.5%). Atrioventricular block (AVB) and intraventricular conduction disturbance were more frequent in the HH' and HV groups than in the AH group (p<0.05). ECG monitoring also showed transient second degree AVB in 4/6 of the AH, 8/8 of the HH' and 8/9 of the HV groups. PAVB was initiated by slowing of the atrial rate in 5/6 of the AH group, but by rate increase or a premature atrial contraction in 16/17 of the HH' and HV groups. The duration of ventricular standstill was longer in the HH' or HV groups (7.6±3.2sec.) than in the AH (4.7±1.4sec) group. Ventricular escape terminated PAVB in 5/8 of the HH' and 5/9 of the HV groups. The administration of positive chronotropic agents such as atropine and isoproternol caused PAVB or syncope in 4 pts, 2 pts each from the HH' and HV groups. Implantation of an artificial pacemaker was needed to prevent Adams-Stokes syndrome in all cases. In the electrophysiological studies, rapid atrial pacing was able to reveal PAVB within the critical zone of the pacing rate (PAVB zone) in 7/16 (43.8%) pts, who were mostly those of the HH' or HV groups whose spontaneous attacks were preceded by an increase of the atrial rate. These results suggest that PAVB occurs according to different mechanisms depending on the site of the block. In the HH' and HV groups PAVB was initiated by an increase of the atrial rate not only in ?spontaneous episodes but also in the electrophysiological study. Repetitive concealed conduction might play a role in the initiation of PAVB in HH' and HV groups. | |||||
書誌情報 |
札幌医学雑誌 = The Sapporo medical journal en : The Sapporo medical journal 巻 58, 号 2, p. 111-122, 発行日 1989-04-01 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0036-472X | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
出版者 | ||||||
出版者 | 札幌医科大学医学部 |