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Cardiopulmonary bypass temperature and brain function
Author(s) -
Shaaban Ali M.,
Harmer M.,
Kirkham F.
Publication year - 2005
Publication title -
anaesthesia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.839
H-Index - 117
eISSN - 1365-2044
pISSN - 0003-2409
DOI - 10.1111/j.1365-2044.2005.04112.x
Subject(s) - cardiopulmonary bypass , medicine , hypothermia , brain function , anesthesia , oxygenation , cardiology , cardiac surgery , neuroscience , biology
Summary A debate has emerged in recently published studies about the optimum cardiopulmonary bypass temperature for good neurological outcome – warm vs. cold, i.e. normothermic vs. hypothermic. Although many comparative studies have been performed, the results of these studies are inconclusive and are difficult to interpret. Brain function has been studied in terms of neurological and neuropsychological outcome, protein S100β levels as a marker of brain damage, and cerebral oxygenation using jugular bulb oximetry and near‐infrared spectroscopy. The studies produce no conclusive proof of the superiority of warm or cold cardiopulmonary bypass. However, it appears that any degree of bypass hypothermia (< 35 °C) may protect the brain. On the other hand, even a slight increase in bypass temperature to > 37 °C may cause marked brain injury.