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Crystalloid vs. hypertonic crystalloid-colloid solutions for induction of mild therapeutic hypothermia after experimental cardiac arrest
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Anaesthesiology and Intensive Care.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Anaesthesiology and Intensive Care.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Anaesthesiology and Intensive Care.
2013 (English)In: Resuscitation, ISSN 0300-9572, E-ISSN 1873-1570, Vol. 84, no 2, 256-262 p.Article in journal (Refereed) Published
Abstract [en]

PURPOSE:

To compare cerebral and hemodynamic consequences of different volumes of cold acetated Ringer's solution or cold hypertonic saline dextran administered in order to achieve mild hypothermia after cardiac arrest (CA) in a pig model of experimental cardiopulmonary resuscitation (CPR).

METHODS:

Using an experimental pig model of 12min CA (followed by 8min CPR or no resuscitation) we compared four groups of piglets: a control group, a normothermic group and two groups with different solutions administered for induction of hypothermia. The control group of 5 piglets underwent 12min CA without subsequent CPR, after which the brain of the animals was removed immediately. After restoration of spontaneous circulation (ROSC) the resuscitated piglets were randomized into a normothermic group (NT group=10), and two hypothermic groups that received cold infusions of either 30mL/kg acetated Ringer's solution (Much fluid group, M, n=10) or 3mL/kg hypertonic saline dextran solution (Less fluid group, L, n=10), respectively, administered during 30min. Additional external cooling with ice packs was used in hypothermic groups. Sixty or 180min after ROSC the experiment was terminated. Immediately after arrest the brain was removed for histological analyses.

RESULTS:

The median time to reach the target core temperature of 34°C after ROSC was 51.5±7.8min in L group and 48.8±8.6min in M group. Less cerebral tissue content of water (p<0.001), sodium (p<0.0001), potassium (p<0.0001) and less central venous pressure (CVP) at 5 and 15min after ROSC were demonstrated in L group. Increased brain damage was demonstrated over time in NT group (p<0.001). Less neurologic damage and BBB disruptions (albumin leakage) was observed at 180min in M group in comparison with both NT and L groups (p<0.001).

CONCLUSION:

No statistical differences were observed between the hypothermic groups in the time to achieve mild hypothermia. Although inclusion of cold hypertonic crystalloid-colloidal solutions in the early resuscitation after ROSC may be more effective than cold crystalloids in reducing brain edema, this study demonstrates that mild hypothermia induced with small volumes of cold hypertonic crystalloid-colloids is less as effective as crystalloid's induced hypothermia in mitigating brain injury after cardiac arrest.

Place, publisher, year, edition, pages
2013. Vol. 84, no 2, 256-262 p.
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-181635DOI: 10.1016/j.resuscitation.2012.06.024ISI: 000317416100038PubMedID: 22771870OAI: oai:DiVA.org:uu-181635DiVA: diva2:557182
Available from: 2012-09-27 Created: 2012-09-27 Last updated: 2017-12-07Bibliographically approved

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Miclescu, AdrianaSharma, Hari ShankerWiklund, Lars

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