[studies on Carotid and Vertebro-basilar Artery Insufficiency].

نویسنده

  • S TSUTSUI
چکیده

概要 1959年 より1963年 の5年 間 に,東 邦大学阿都 内科 で観察 した内頚 お よび椎 骨脳 底 動脈循環不 金 症45例 にっ き,臨 床症状の特 徴を統 計的 に観察す るとともに,そ の発生頻 度を検討 した.ま た,本 症 と本 態性 高血圧症,低 血圧症,正 常血圧 者お よび若年性起 立性 低血圧 の 患者群につ いて比較 し,本 症 の発生機序 につ い て検討 を加 えた.そ の結果,本 症 の大多数は既 往に高血圧 を有 し,発 作時 に血 圧 低 下をし たが,約70%は 起立性低 血圧 を伴なつ た高血圧症 であつ た.Mecholyl試 験 で は 変感神 経 緊 張低下 を示 す点で他群 と異なつ てお り,体 位変換 に よつて血 中norepinephrineが 増加 せず,安 静時 の 血中norepinephrineは 本態性高血圧症 と同 じく高値 を示 した.ま た, uorepinephrineの 分泌異 常 と 頚 動脈洞反 射異常に よる血 圧下降 とが平 行す ることを実験的 に確 かめた.し たがつて,頚 動脈洞 の反 射 異常 も,本 症の発生 に関 係深い もの と考 え られる.以 上,本 症 では血圧下 降 と全身血圧 の調節に関 与 してい る 自律神経 中橿,頚 動脈 洞,catecholamine分 泌異常の あるこ とを 明 らかに した.さ らに, 頭 蓋内末梢 血圧の指標 として,眼 底 血圧 を安静 時お よび体 位変 換時に測定 した結果,本 症 は高血圧症 よ りも眼底 血圧 が高 く,体 位変換 に よる変動 が著 しい ことを確かめ,本 症 では全身血圧 の調節異常 と 同時 に,頭 蓋 内末 梢血圧の調 節異常 のあ るこ とを明 らかに した.

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عنوان ژورنال:
  • Nihon Naika Gakkai zasshi. The Journal of the Japanese Society of Internal Medicine

دوره 53  شماره 

صفحات  -

تاریخ انتشار 1965