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The Effects of Selective Brain Hypothermia and Decompressive Craniectomy on Brain Edema After Closed Head Injury in Mice

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Brain Edema XIV

Part of the book series: Acta Neurochirurgica Supplementum ((NEUROCHIRURGICA,volume 106))

Abstract

Intractable brain edema remains one of the main causes of death after traumatic brain injury (TBI). Brain hypothermia and decompressive craniectomy have been considered as potential therapies. The goal of our experimental study was to determine if selective hypothermia in combination with craniectomy could modify the development of posttraumatic brain edema. Male CD-1 mice were anesthetized with halothane and randomly assigned into the following groups: sham-operated (n = 5), closed head injury (CHI) alone (n = 5), CHI followed by craniectomy at 1 h post-TBI (n = 5) and CHI + craniectomy and selective hypothermia (focal brain cooling using cryosurgery device) maintained for 5 h (n = 5). Animals were sacrificed at 7 h posttrauma and brains were removed, sagittally dissected and dried. The brain water content of separate hemispheres was calculated from the weight difference before and after drying. In the CHI alone group there was no significant increase in brain water content in both the ipsi- and contralateral hemispheres (80.59 ± 1% and 78.74 ± 0.9% in the CHI group vs. 79.31 ± 0.7% and 79.01 ± 0.3% in the sham group, respectively). Brain edema was significantly increased ipsilaterally in the trauma + craniectomy group (82.11 ± 0.6%, p < 0.05), but not in the trauma + craniectomy + hypothermia group (81.52 ± 1.1%, p > 0.05) as compared to the sham group (79.31 ± 0.7%). These data suggest that decompressive craniectomy leads to an increase in brain water content after CHI. Additional focal hypothermia may be an effective approach in the treatment of posttraumatic brain edema.

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Correspondence to Jacek Szczygielski .

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Szczygielski, J., Mautes, A.E., Schwerdtfeger, K., Steudel, WI. (2010). The Effects of Selective Brain Hypothermia and Decompressive Craniectomy on Brain Edema After Closed Head Injury in Mice. In: Czernicki, Z., Baethmann, A., Ito, U., Katayama, Y., Kuroiwa, T., Mendelow, D. (eds) Brain Edema XIV. Acta Neurochirurgica Supplementum, vol 106. Springer, Vienna. https://doi.org/10.1007/978-3-211-98811-4_42

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  • DOI: https://doi.org/10.1007/978-3-211-98811-4_42

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