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The impact of brain temperature and ...

Mcilvoy, Laura H.

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The impact of brain temperature and core temperature on intracranial pressure and cerebral perfusion pressure in acutely injured neurological patients.

Record Type:	Electronic resources : Monograph/item
Title/Author:	The impact of brain temperature and core temperature on intracranial pressure and cerebral perfusion pressure in acutely injured neurological patients./
Author:	Mcilvoy, Laura H.
Description:	80 p.
Notes:	Source: Dissertation Abstracts International, Volume: 66-07, Section: B, page: 3575.
Contained By:	Dissertation Abstracts International66-07B.
Subject:	Biology, Neuroscience. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3183932
ISBN:	0542254719

The impact of brain temperature and core temperature on intracranial pressure and cerebral perfusion pressure in acutely injured neurological patients.
Mcilvoy, Laura H.

The impact of brain temperature and core temperature on intracranial pressure and cerebral perfusion pressure in acutely injured neurological patients. - 80 p.

Source: Dissertation Abstracts International, Volume: 66-07, Section: B, page: 3575.

Thesis (Ph.D.)--Indiana University, 2005.

Hyperthermia has been demonstrated to increase neuronal injury when present during or after an acute brain injury. Core temperature has traditionally been used to diagnose hyperthermia with the assumption that core temperature equals brain temperature in the population of acute brain injury. All published studies have found brain temperature higher than core temperatures. If the temperature of an injured brain is higher than core temperature, episodes of neural hyperthermia may go undetected. The objectives of this study were to (1) determine if differences exist between brain temperature and core temperature in subjects with acute neurological injuries in both normothermic and febrile states and (2) investigate the impact of brain and core temperatures on intracranial pressure (ICP) and cerebral perfusion pressure (CPP). The study was conducted through a retrospective chart audit of patients 18 years of age or older admitted to a Level I Trauma Center with a diagnosis of brain injury whose condition warranted placement of a pulmonary artery catheter and intraventricular catheter. Thirty-one charts contained complete data; nine charts provided partial data (23 trauma and 17 strokes). There were 117 charts inspected that had no brain temperature recorded, even though all ICP monitors displayed the brain temperature and a space to record the number was preprinted on the critical care nursing flowsheet. Mean brain temperature (100.8°F, SD = 0.69) was found to be significantly higher than mean core temperature (100.2°F, SD = 0.74) ((t (30) = -13, p =.00 (two-tailed), d = .80). Brain temperature means were hyperthermic (greater than or equal to 100.9°F) while matching core temperatures were normothermic in almost a third of the subjects. There was no significant difference found between hyperthermic ICP or CPP and normothermic ICP or CPP determined by brain or core temperature now was there any correlation found between core temperature and ICP or CPP or between brain temperature and ICP or CPP. Future research is needed with prospectively collected data of adequate sample size to continue to investigate the impact of core and brain temperature on the intracranial dynamics of ICP and CPP.

ISBN: 0542254719Subjects--Topical Terms:

1017680
Biology, Neuroscience.

The impact of brain temperature and core temperature on intracranial pressure and cerebral perfusion pressure in acutely injured neurological patients.
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100 1 $a Mcilvoy, Laura H. $3 1907978
245 1 4 $a The impact of brain temperature and core temperature on intracranial pressure and cerebral perfusion pressure in acutely injured neurological patients.
300 $a 80 p.
500 $a Source: Dissertation Abstracts International, Volume: 66-07, Section: B, page: 3575.
500 $a Chairman: Juanita F. Keck.
502 $a Thesis (Ph.D.)--Indiana University, 2005.
520 $a Hyperthermia has been demonstrated to increase neuronal injury when present during or after an acute brain injury. Core temperature has traditionally been used to diagnose hyperthermia with the assumption that core temperature equals brain temperature in the population of acute brain injury. All published studies have found brain temperature higher than core temperatures. If the temperature of an injured brain is higher than core temperature, episodes of neural hyperthermia may go undetected. The objectives of this study were to (1) determine if differences exist between brain temperature and core temperature in subjects with acute neurological injuries in both normothermic and febrile states and (2) investigate the impact of brain and core temperatures on intracranial pressure (ICP) and cerebral perfusion pressure (CPP). The study was conducted through a retrospective chart audit of patients 18 years of age or older admitted to a Level I Trauma Center with a diagnosis of brain injury whose condition warranted placement of a pulmonary artery catheter and intraventricular catheter. Thirty-one charts contained complete data; nine charts provided partial data (23 trauma and 17 strokes). There were 117 charts inspected that had no brain temperature recorded, even though all ICP monitors displayed the brain temperature and a space to record the number was preprinted on the critical care nursing flowsheet. Mean brain temperature (100.8°F, SD = 0.69) was found to be significantly higher than mean core temperature (100.2°F, SD = 0.74) ((t (30) = -13, p =.00 (two-tailed), d = .80). Brain temperature means were hyperthermic (greater than or equal to 100.9°F) while matching core temperatures were normothermic in almost a third of the subjects. There was no significant difference found between hyperthermic ICP or CPP and normothermic ICP or CPP determined by brain or core temperature now was there any correlation found between core temperature and ICP or CPP or between brain temperature and ICP or CPP. Future research is needed with prospectively collected data of adequate sample size to continue to investigate the impact of core and brain temperature on the intracranial dynamics of ICP and CPP.
590 $a School code: 0093.
650 4 $a Biology, Neuroscience. $3 1017680
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773 0 $t Dissertation Abstracts International $g 66-07B.
790 1 0 $a Keck, Juanita F., $e advisor
790 $a 0093
791 $a Ph.D.
792 $a 2005
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3183932