10.頸動脈圧迫遮断時の眼動脈圧測定:-頸動脈結紮の耐容性に関する新しいチェック法
スポンサーリンク
概要
- 論文の詳細を見る
As a method of preoperative evaluation of the tolerance for carotid ligation, namely, of assessing intracranial collateral circulation, we have measured, using oculocerebrovasculometry(OCVM), the pressure of the ophthalmic artery with and without carotid compression and have calculated the ratio of the pressure of the ophthalmic artery to the systemic blood pressure (OAP/BrBP).<BR>In those who presented no cerebral ischemic signs or EEG abnormalities with carotid compression, the OAP/BrBP ratio was 0.763±0.063 (mean±S.D., N: 18) without carotid compression, declining to 0.373±0.136 with ipsilateral carotid compression. The reduction of rCBF (three-dimensional measurement) with carotid compression in these nine cases remained around 10%. There was a good correlation between the %-reduction of the rCBF and the OAP/BrBP ratio, which were obtained under carotid compression (r: 0.758, N: 16, p<0.001).<BR>One case manifested no cerebral ischemic signs or EEG abnormalities with preoperative carotid compression, but during the carotid endarterectomy procedure, she showed an ipsilateral decrease of alpha wave power without the appearance of slow waves with the carotid clamp. The preoperative rCBF was decreased with carotid compression in about 45% (59ml/100g/min., 81% of the normal value). In this case, the OAP/BrBP ratio with carotid compression was 0.313.<BR>In another case, contralateral cerebral ischemic signs and ipsilateral EEG abnormalities (appearance of 6-7 Hz theta waves) developed with carotid compression. The reduction of rCBF with carotid compression was 51% (33 nit/100g/min., 45% of the normal value). In this case, the preoperative OAP/BrBP ratio was decreased remarkably to 0.114.<BR>It is thought that in those whose OAP/BrBP ratio with carotid compression is above 0.3, the intracranial collateral circulation may have developed well and the ICA ligation may be tolerable. The lower limit of the OAP/BrBP ratio with carotid compression for tolerable ICA ligation is believed to be around 0.3.
- The Japanese Society on Surgery for Cerebral Strokeの論文
著者
関連論文
- 心筋梗塞様心電図変化と心エコー図で広範囲な壁運動異常を呈したクモ膜下出血の1例 : 日本循環器学会第134回関東甲信越地方会
- 重症クモ膜下出血例Hunt&Kosnik grade IV, Vに対するわれわれの治療戦略
- 22.挿管チューブ・カフ漏れ対策一考案 : 第72回日本医科器械学会大会一般演題講演集
- 22.挿管チューブ・カフ漏れ対策一考案 : 第72回日本医科器械学会大会予稿集
- I-C-8 側頭葉てんかん発作の慢性深部電極による記録
- 脳卒中に対する低体温療法
- 74.^Tc標識赤血球による局所脳血液量の簡易的絶対量算出法
- 82. ^Tc 標識血液製剤を用いた脳動脈主幹部閉塞症亜急性期における脳循環血液量分布の精度評価(第 19 回秋季学術大会一般研究発表予稿)
- 4.重症くも膜下出血例(G.IV, V)に対する治療戦略
- 脳ドック
- Long vein graftについて(脳動脈の再建術)
- 自家長静脈片 : 頭蓋外-頭蓋内バイパス術に対する応用
- 54.内頸動脈巨大脳動脈瘤の手術法に関する一考察
- くも膜下出血後の断層局所脳血流量:-CT所見との対比-
- 10.頸動脈圧迫遮断時の眼動脈圧測定:-頸動脈結紮の耐容性に関する新しいチェック法