Evaluation of Functional Reversibility of Ischemic Brain-To select appropriate patients with completed stroke for STA-MCA bypass surgery

スポンサーリンク

概要

• 論文の詳細を見る

• The purpose of this paper is to present a new method by which the functional reversibility of the ischemic brain can be evaluated by changes of somatosensory evoked potentials (SEP) in induced-hypertension. The method (called functional SEP test) was useful in selecting appropriate candidates of completed stroke for superficial temporal artery (STA) -middle cerebral artery (MCA) anastomosis. To evaluate the grade of reversible hypofunction of ischemic brain, cerebral blood flow (CBF) dynamics and SEPs during induced-hypertension were measured before, during and after operation in 19 completed stroke patients with main trunk occlusion of MCA. As control studies, cerebral angiographies and CBF studies were performed in 29 conservatively treated cases. Furthermore, preoperative angiographical findings, STA-MCA shunt flow and blood pressure of STA and MCA were examined respectively in surgically treated cases. From these studies, our present criteria for bypass operation evolved as follows: l) Mean CBF value is in 25 to 32 ml/100g/min without global loss of autoregulation and CO_2 -reactivity; 2) Amplitude of initial component of SEP is augmented 2 times or more during induced-hypertension than at rest state; 3) The N_1 -amplitude ratio of the normal side to the affected side is above 0.5 at rest state and increased approximately to normal value, i.e., 1.0 by induced-hypertension; and 4) The STA-MCA shunt flow through STA is in 40 to 90 ml/min and the MCA blood pressure is in 40 to 60 mmHg.

• 社団法人日本脳神経外科学会の論文

著者

• Uemura Kazuo

  Divisions Of Radiology Research Institute Of Brain And Blood Vessels

• Uemura Kazuo

  Division Of Radiology Research Institute Of Brain And Blood Vessels

• Uemura Kazuo

  Division Of Surgical Neurology And Radiology

• Suzuki Akifumi

  Research Institute Of Brain And Blood Vessels

• ITO Zentaro

  Research Institute of Brain and Blood Vessels

• HEN Rhyshu

  Research Institute of Brain and Blood Vessels

• NAKAJIMA Kenji

  Research Institute of Brain and Blood Vessels

• MORIYAMA Takashi

  Research Institute of Brain and Blood Vessels

関連論文

• -P172- QUANTITATIVE MEASUREMENT OF REGIONAL MYOCARDIAL BLOOD FLOW USING DYNAMIC POSITRON EMISSION TO TOMOGRAPHY
• A CLINICAL STUDY FOR MYOCARDIAL GLUCOSE METABOLISM AND MYOCARDIAL BLOOD FLOW USING POSITRON EMISSION TOMOGRAPHY : Radioisotope : PROCEEDINGS OF THE 50th ANNUAL SCIENTIFIC MEETING OF THE JAPANESE CIRCULATION SOCIETY
• Evaluation of Functional Reversibility of Ischemic Brain-To select appropriate patients with completed stroke for STA-MCA bypass surgery
• B-3. Cerebral Angiotomography : Technical Problems and Clinical
• REGIONAL CEREBRAL BLOOD FLOW ESTIMATED BY ^133 CLEARANCE METHOD (SIXTH REPORT)
• REGIONAL CEREBRAL BLOOD FLOW ESTIMATED BY ^Xe CLEARANCE METHOD (FIFTH REPORT) : PROCEEDINGS OF THE 38TH ANNUAL MEETING OF THE JAPANESE CIRCULATION SOCIETY
• REGIONAL CEREBRAL BLOOD FLOW ESTIMATED BY ^Xe CLEARANCE METHOD (4th REPORT) : (Part II)
• REGIONAL CEREBRAL BLOOD FLOW ESTIMATED BY ^Xe CLEARANCE METHOD
• MEASUREMENT OF REGIONAL CEREBRAL BLOOD FLOW BY ^XE-CLEARANCE METHOD (SECOND REPORT) : PROCEEDINGS OF THE 35TH ANNUAL MEETlNG OF THE JAPANESE CIRCULATION SOCIETY (Part III)
• REGIONAL CEREBRAL BLOOD FLOW ESTIMATED BY ^Xe CLEARANCE METHOD IN PATIENTS WITH CEREBROVASCULAR DISEASE

スポンサーリンク