The stress response to induced hypotension for cerebral aneurysm surgery: a comparison of two hypotensive techniques
- 1 March 1988
- journal article
- research article
- Published by Springer Nature in Canadian Journal of Anesthesia/Journal canadien d'anesthésie
- Vol. 35 (2) , 111-115
- https://doi.org/10.1007/bf03010648
Abstract
Plasma epinephrine (PE), plasma norepinephrine (PNEj, plasma renin activity (PRA), mean arterial pressure (MAP) and heart rate (HR) were measured before, during and after induced hypotension in two groups of patients undergoing cerebral aneurysm surgery, in Group I isoflurane was used to maintain anaesthesia and induce hypotension. Mean PE fell significantly during hypotension and remained reduced after hypotension, mean PNE remained unchanged, while mean PRA rose slightly but not significantly during hypotension, falling again after hypotension. In Group II halothane was used to maintain anaesthesia and sodium nitroprusside to induce hypotension, During anaesthesia and surgical stimulation PNE and PRA were significantly greater compared to Group I. Mean PE, PNE and PRA all rose during hypotension and remained elevated after hypotension. The rise in PNE and PRA was statistically significant. After hypotension the MAP in Group II was significantly higher when compared to Group I. There was no significant change in HR during the study in either group, in conclusion, isoflurane-induced hypotension with isoflurane anaesthesia unlike sodium nitroprusside-induced hypotension with halothane anaesthesia attenuated the stress response. On a mesuré avant, pendant et après ľhypotension induite chez les patients divisés en deux groupes devant subir une anévrisectomie cérébrale ľépinéphrine plasmatique (PE), la norépinéphrine (PNE), ľactivité de la rénine (PRA), la pression artérielle moyenne (MAP) et ta fréquence cardiaque (HR). Dans le groupe I V isoflurane a été utilisé afin de maintenir une anesthésie et ďinduire ľhypotension. La PE moyenne diminua significativement pendant V hypotension et demeura diminuée après ľhypotension, la PNE moyenne demeura inchangée, alors que la PRA moyenne s’éleva légèrement et non ďune façon significative durant V hypotension pour diminuer par la suite après ľhypotension. Dans le groupe II ľhalothane a été utilisé afin de maintenir ľanesthésie et le nitroprussiate de soude afin ďinduire ľhypotension. Durant ľanesthésie la stimulation chirurgicale, la PNE et la PRA étaient significativement plus grands comparativement au groupe I. Les valeurs moyennes de PE, PNE et PRA augmentèrent durant ľhypotension et restèrent élevées après ľhypotension. Ľaugmentation du PNE et PRA était statistiquement significative. Après ľhypotension la MAP du groupe II était significativement plus élevée comparativement au groupe I. II n’y avait aucun changement significatif du HR durant ľétude dans les deux groupes. En conclusion ľhypotension induite par ľisoflurane lors ďune anesthésie à ľisoflurane contrairement à celle induite par le nitroprussiate de soude lors ďune anesthésie à ľhalothane atténue la réponse au stress.This publication has 18 references indexed in Scilit:
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