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AJNR Awards, New Junior Editors, and more. Read the latest AJNR updates

Research ArticleNeurointervention
Open Access

Endovascular Cooling Catheter for Selective Brain Hypothermia: An Animal Feasibility Study of Cooling Performance

G. Cattaneo, M. Schumacher, C. Maurer, J. Wolfertz, T. Jost, M. Büchert, A. Keuler, L. Boos, M.J. Shah, K. Foerster, W.-D. Niesen, G. Ihorst, H. Urbach and S. Meckel
American Journal of Neuroradiology May 2016, 37 (5) 885-891; DOI: https://doi.org/10.3174/ajnr.A4625
G. Cattaneo
aFrom Acandis (G.C., J.W., T.J., M.B.), Pforzheim, Germany
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  • ORCID record for G. Cattaneo
M. Schumacher
bDepartments of Neuroradiology (M.S., C.M., A.K., L.B., H.U., S.M.)
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C. Maurer
bDepartments of Neuroradiology (M.S., C.M., A.K., L.B., H.U., S.M.)
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J. Wolfertz
aFrom Acandis (G.C., J.W., T.J., M.B.), Pforzheim, Germany
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T. Jost
aFrom Acandis (G.C., J.W., T.J., M.B.), Pforzheim, Germany
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M. Büchert
aFrom Acandis (G.C., J.W., T.J., M.B.), Pforzheim, Germany
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A. Keuler
bDepartments of Neuroradiology (M.S., C.M., A.K., L.B., H.U., S.M.)
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L. Boos
bDepartments of Neuroradiology (M.S., C.M., A.K., L.B., H.U., S.M.)
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M.J. Shah
cNeurosurgery (M.J.S.)
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K. Foerster
eUniversity Heart Center (K.F.)
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W.-D. Niesen
dNeurology (W.-D.N.)
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G. Ihorst
fUniversity Study Center (G.I.), University Hospital Freiburg, Freiburg, Germany.
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H. Urbach
bDepartments of Neuroradiology (M.S., C.M., A.K., L.B., H.U., S.M.)
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S. Meckel
bDepartments of Neuroradiology (M.S., C.M., A.K., L.B., H.U., S.M.)
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    Fig 1.

    Temperature recordings from 9 sheep (mean ΔT and 95% CI, plotted at 5-minute intervals) that were measured during (0–180 minutes) and after (180–210 minutes) selective intracarotid blood cooling in the frontal and temporal cortical probes of the cooled-versus-noncooled hemisphere (A) and cooled-versus–central venous temperature (B), respectively.

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    Fig 2.

    Mean temperature gradients (averaged over 8 sheep) among the cooled hemisphere and the central venous temperature, noncooled hemisphere, and nasal temperature, respectively, during 180 minutes of cooling and 30 minutes of rewarming (time-averaged at 5-minute intervals).

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    Fig 3.

    Microprobe temperature measurements performed at 30-minute intervals during the cooling phase at predefined distances to the cooling catheter tip (1, 5, and 10 cm) in comparison with continuously recorded ipsilateral brain cortex and central venous (IVC) temperatures.

Tables

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  • Velocity of selective brain cooling

    Cooled Temporal Cortex (median time) (range) (min)Cooled Frontal Cortex (median time) (range) (min)
    −1°C8.5 (3.8–12.5)11.5 (7.5–14.0)
    −2°C29.4 (11.7–70.3)40.7 (27.0–70.0)
    −3°C85.7 (59.8–137.6)100.5 (84.3–140.3)
    −4°C142.1 (109.3–180.0)a158.3 (148.8–180.0)a
    • ↵a −4°C was not reached in 2/8 sheep in both temporal and frontal cortices.

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American Journal of Neuroradiology: 37 (5)
American Journal of Neuroradiology
Vol. 37, Issue 5
1 May 2016
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G. Cattaneo, M. Schumacher, C. Maurer, J. Wolfertz, T. Jost, M. Büchert, A. Keuler, L. Boos, M.J. Shah, K. Foerster, W.-D. Niesen, G. Ihorst, H. Urbach, S. Meckel
Endovascular Cooling Catheter for Selective Brain Hypothermia: An Animal Feasibility Study of Cooling Performance
American Journal of Neuroradiology May 2016, 37 (5) 885-891; DOI: 10.3174/ajnr.A4625

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Endovascular Cooling Catheter for Selective Brain Hypothermia: An Animal Feasibility Study of Cooling Performance
G. Cattaneo, M. Schumacher, C. Maurer, J. Wolfertz, T. Jost, M. Büchert, A. Keuler, L. Boos, M.J. Shah, K. Foerster, W.-D. Niesen, G. Ihorst, H. Urbach, S. Meckel
American Journal of Neuroradiology May 2016, 37 (5) 885-891; DOI: 10.3174/ajnr.A4625
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