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SINAPSE experts from around Scotland have developed ten online modules designed to explain medical imaging. They are freely available and are intended for non-specialists.


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Online Short Courses

Do acute phase markers explain body temperature and brain temperature after ischemic stroke?

Author(s): W. N. Whiteley, R. Thomas, G. Lowe, A. Rumley, B. Karaszewski, P. Armitage, I. Marshall, K. Lymer, M. Dennis, J. Wardlaw

Abstract:
Objective: Both brain and body temperature rise after stroke but the cause of each is uncertain. We investigated the relationship between circulating markers of inflammation with brain and body temperature after stroke. Methods: We recruited patients with acute ischemic stroke and measured brain temperature at hospital admission and 5 days after stroke with multivoxel magnetic resonance spectroscopic imaging in normal brain and the acute ischemic lesion (defined by diffusion-weighted imaging [DWI]). We measured body temperature with digital aural thermometers 4-hourly and drew blood daily to measure interleukin-6, C-reactive protein, and fibrinogen, for 5 days after stroke. Results: In 44 stroke patients, the mean temperature in DWI-ischemic brain soon after admission was 38.4 degrees C (95% confidence interval [CI] 38.2-38.6), in DWI-normal brain was 37.7 degrees C (95% CI 37.6-37.7), and mean body temperature was 36.6 degrees C (95% CI 36.3-37.0). Higher mean levels of interleukin-6, C-reactive protein, and fibrinogen were associated with higher temperature in DWI-normal brain at admission and 5 days, and higher overall mean body temperature, but only with higher temperature in DWI-ischemic brain on admission. Conclusions: Systemic inflammation after stroke is associated with elevated temperature in normal brain and the body but not with later ischemic brain temperature. Elevated brain temperature is a potential mechanism for the poorer outcome observed in stroke patients with higher levels of circulating inflammatory markers. Neurology (R) 2012;79:152-158

Full version: Available here

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ISBN: 0028-3878
Publication Year: 2012
Periodical: Neurology
Periodical Number: 2
Volume: 79
Pages: 152-158
Author Address: Wardlaw, J Univ Edinburgh, Div Clin Neurosci, Edinburgh, Midlothian, Scotland Univ Edinburgh, Div Clin Neurosci, Edinburgh, Midlothian, Scotland Univ Edinburgh, SFC Brain Imaging Res Ctr, SINAPSE Collaborat, Edinburgh, Midlothian, Scotland Univ Glasgow, Royal Infirm, Div Cardiovasc & Med Sci, Glasgow, Lanark, Scotland Med Univ Gdansk, Dept Adult Neurol, Gdansk, Poland