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Japanese

THE SAFETY TIME LIMIT OF TEMPORARY CLAMPING OF CEREBRAL ARTERIES IN THE DIRECT SURGICAL TREATMENT OF THE INTRACRANIAL ANEURYSM UNDER MODERATE HYPOTHERMIA Jiro Suzuki 1 , Ryungchan Kwak 1 , Yoshinobu Okudaira 1 1Division of Neurosurgery, Institute of Brain Diseases, Tohoku University School of Medicine pp.407-416
Published Date 1973/4/1
DOI https://doi.org/10.11477/mf.1406203302
  • Abstract
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In our clinic, the direct surgical treatment on intracranial aneurysms was performed in 274 cases out of 316 cases to the end of 1969. Temporary occlusion of the cerebral artery was applyed on 215 cases of them. The safety time limit of tempo-rary clamping was discussed in this experience.

1. The application of temporary clamping on the cerebral artery was performed under moderate hypothermia at 25-29℃ in about 85% of 215 cases.

2. No sequela was noted in 177 cases (82.3%) of 215 cases with temporary occlusion of cerebral artery.

3. The longest safety time in temporary clamp-ing of bilateral Ai portion of the anterior cerebralartery was 48.5 minutes at 26℃, 47min. at 27℃ and 48min. at 28℃, in M1 portion of the middle cerebral artery, 30min. at 26℃, 35min. at 27℃, 36min. at 27.5℃, 40min. at 30℃ and 19min. under normothermia, and on a dominant Al portion of the cases with hypoplasia at contralateral Al portion, 82min. at 26℃, 86min. at 27.5℃ and 63min. at 28℃.

4. Neurological sequelae might be caused by temporary clamping of the cerebral artery in one case, and in 6 case presumably by the hypoxia due to temporary claming as well as brain damage by direct aneurysm operation, and in the other 9 cases presumably by the brain damage due to operation.

5. For effective intermediate release during the temporary clamping 5 to 10 minutes to prolong the safety time limit seemed to be enough.


Copyright © 1973, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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