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논문 기본 정보

자료유형
학술저널
저자정보
Cho, Jae-Man (Department of Neurosurgery Kyungpook National University Hospital) Kim, Yeon-Hee (Department of Neurosurgery Kyungpook National University Hospital) Han, Hyung-Soo (Department of Physiology, Kyungpook National University Hospital) Park, Jae-Chan (Department of Neurosurgery Kyungpook National University Hospital)
저널정보
대한신경외과학회 대한신경외과학회지 대한신경외과학회지 제42권 제4호
발행연도
2007.1
수록면
337 - 341 (5page)

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Objective : Repeated administration of mannitol in the setting of large hemispheric infarction is a controversial and poorly defined therapeutic intervention. This study was performed to examine the effects of multiple-dose mannitol on a brain edema after large hemispheric infarction. Methods : A middle cerebral artery was occluded with the rat suture model for 6 hours and reperfused in 22 rats. The rats were randomly assigned to either control (n=10) or the mannitol-treated group (n=12) in which intravenous mannitol infusions (0.8 g/kg) were performed six times every four hours. After staining a brain slice with 2,3,5-triphenyltetrazolium chloride, the weight of hemispheres, infarcted (IH) and contralateral (CH), and the IH/CH weight ratio were examined, and then hemispheric accumulation of mannitol was photometrically evaluated based on formation of NADH catalyzed by mannitol dehydrogenase. Results : Mannitol administration produced changes in body weight of $-7.6{\pm}1.1%$, increased plasma osmolality to $312{\pm}8\;mOsm/L$. It remarkably increased weight of IH ($0.77{\pm}0.06\;gm$ versus $0.68{\pm}0.03\;gm$ : p<0.01) and the IH/CH weight ratio ($1.23{\pm}0.07$ versus $1.12{\pm}0.05$ : p<0.01). The photometric absorption at 340 nm of the cerebral tissue in the mannitol-treated group was increased to $0.375{\pm}0.071$ and $0.239{\pm}0.051$ in the IH and CH, respectively from $0.167{\pm}0.082$ and $0.162{\pm}0.091$ in the IH and CH of the control group (p<0.01). Conclusion : Multiple-dose mannitol is likely to aggravate cerebral edema due to parenchymal accumulation of mannitol in the infarcted brain tissue.

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