Effects of ethanol in traumatic brain injury.

Abstract:

:The effects of ethanol intoxication on brain injury and cerebral blood flow (CBF) were investigated in a porcine fluid-percussion model of traumatic brain injury (TBI). Immature swine, under halothane anesthesia (1%), had a TBI delivered with a fluid-percussion device. The experimental group (n = 10) received ethanol (3.5 gm/kg) via gastric tube followed in 1 h by TBI. Two groups of control animals received normal saline and TBI (n = 10) or ethanol and no TBI (n = 5). Mean arterial blood pressure (MAP), intracranial pressure (ICP), arterial blood gases, and serum lactate were monitored for 3 h after the injury. CBF was measured with radiolabelled 15-micron diameter microspheres. Neuropathologic changes were evaluated and graded after formalin perfusion and brain removal at 3 h postinjury. The ethanol level 60 min post-head injury was 198 +/- 70 (SD) mg/dL in the ethanol+TBI group. At 90 min postinjury and thereafter, ethanol+TBI animals compared with TBI only animals had significantly lower MAP (63 +/- 26 mmHg vs 91 +/- 15 mmHg) and lower cerebral perfusion pressure (50 +/- 25 mmHg vs 78 +/- 15), and at 180 min postinjury, lower CBF (87 +/- 37% vs 62 +/- 79% of preinjury levels). Ethanol+TBI animals had higher blood lactates (28 +/- 11 mg/dL vs 13 +/- 6 mg/dL) than TBI only animals. Ethanol+TBI animals also had significantly longer postinjury apneas (11 +/- 8 min vs 0.6 +/- 0.4 min), with three of ten ethanol-treated animals never recovering spontaneous respiration. Ethanol intoxication produced hemodynamic and respiratory changes, which may have a deleterious effect on outcome and mortality after brain injury.

journal_name

J Neurotrauma

journal_title

Journal of neurotrauma

authors

Zink BJ,Walsh RF,Feustel PJ

doi

10.1089/neu.1993.10.275

subject

Has Abstract

pub_date

1993-10-01 00:00:00

pages

275-86

issue

3

eissn

0897-7151

issn

1557-9042

journal_volume

10

pub_type

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