British journal of anaesthesia
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Editorial Comment
Perioperative medicine- the second round will need a change of tactics.
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Researchers induced awake paralysis in 10 volunteers using separately both suxamethonium and rocuronium. Both the BIS A2000 (2003) and BIS Vista monitor (2013) were tested.
BIS decreased immediately after paralysis and did not fully recover until muscle recovery. BIS values decreased to as low as 44, despite the subject being awake.
In more than half of the 20 trials the BIS value decreased to below 60 at some point. In one case this lasted for almost 4 minutes, representing 76% of the total paralysis time for that subject.
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Review Meta Analysis
Benefits and risks of epidural analgesia in cardiac surgery†.
Epidural analgesia reduces all-cause mortality after cardiac surgery, at the cost of a 1 in 3,500 risk of epidural hematoma.
pearl