Comparison between hypertonic saline and mannitol in the reduction of elevated intracranial pressure in a rodent model of acute cerebral injury.
نویسندگان
چکیده
Clinically both mannitol and hypertonic saline (HTS) have been used successfully to treat elevated intracranial pressure (ICP), although which therapy is superior is yet unclear. Most experimental data have been derived from animal models of brain injury using general anesthesia, which may not be applicable under other conditions. Our laboratory compared the efficacy of single, equi-osmolar bolus doses of HTS and mannitol in reducing elevated ICP in a lightly sedated, unrestrained rodent model of acute brain injury. Sprague-Dawley rats were mask anesthetized for craniectomy and placement of invasive monitors. Following emergence from anesthesia, continuous sedation was provided (0.25% halothane in oxygen). A focal, liquid nitrogen cold lesion was introduced to the right parietal cortex. Animals were continuously monitored and then treated with a single bolus of 0.9% saline (control group) or 11.0 mOsm/kg equivalents of either mannitol or HTS (experimental groups) at time of maximal ICP increase (60 minutes). Both mannitol and HTS reduced ICP, but HTS was more effective-53.9% reduction versus 35.0% (P < .01). The therapeutic action of HTS was also more durable, lasting up to 500 minutes whereas the mannitol treated animals were observed to return to, and overshoot the baseline elevated ICP by 10% to 25% by 120 minutes following dosing (P < .01). Despite these differences, brain water content was similar between groups. We conclude that HTS was more effective in reducing elevated ICP in this awake model of traumatic brain injury.
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Introduction : Various treatments are used to reduce cerebral edema in stroke patients that show signs of RICP. Mannitol is used as the first line of standard therapy in the control of RICP in the acute phase. Presently most of the researches are focused on the use of hypertonic saline in the treatment of cerebral edema and recent studies have shown that it can replace serum mannitol and may ...
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متن کاملMannitol Vs Hypertonic Saline in the Treatment of Increased Intracranial Pressure in Traumatic Brain Injury Patients Authors
1* Associate Professor, Dept of Neurosurgery, Mamata Medical College, Khammam, Telangana 2 Assistant Professor, Dept of Neurosurgery, Sidhartha Medical College, Vijayawada, Andhra Pradesh *Corresponding Author Jagadeesh Babu. K Associate Professor, Department of Neurosurgery, Mamata Medical College, Khammam, Telangana, Email: [email protected], Phone no: 8374590275 Abstract Medical mana...
متن کاملComparison of Equimolar Doses of Mannitol and Hypertonic Saline for the Treatment of Elevated Intracranial Pressure After Traumatic Brain Injury: A Systematic Review and Meta-Analysis: Erratum
متن کامل
Hypertonic saline more efficacious than mannitol in lethal intracranial hypertension model.
BACKGROUND Medical management of brain edema and elevated intracranial pressure (ICP) is a crucial challenge in neurosurgical practice. Depending on the cause, the treatments for brain edema fall into three categories: stabilization of the blood-brain barrier, depletion of brain water and surgical decompression. Although mannitol is the mainstay of hyperosmolar therapy, hypertonic saline (HS) i...
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ورودعنوان ژورنال:
- Journal of neurosurgical anesthesiology
دوره 12 4 شماره
صفحات -
تاریخ انتشار 2000