How long should comatose patients resuscitated from cardiac arrest be cooled?

Patients resuscitated from cardiac arrest (CA) suffer to a greater or lesser degree from post CA syndrome due to ischaemia and reperfusion injuries. In order to minimize the detrimental cerebral effects of this syndrome it is recommended that resuscitated patients be cooled to a temperature within the range 32 to 36 ℃ for at least 24 hours.