Intraoperative burst suppression is associated with postoperative delirium following cardiac surgery: a prospective, observational study

Table 6 Time spent in a state of burst suppression, i.e. a BSR > 0%

	Patients
Group	With delirium	Without delirium	p-value
Duration of burst suppression as obtained during the entire period of surgery
Left side	131 min [50;183]	48 min [13;127]	0.034
Right side	85 min [46;142]	35 min [7;89]	0.009
Duration of burst suppression from intubation to onset of cardiopulmonary bypass
Left side	59 min [17;77]	20 min [3;58]	0.008
Right side	53 min [18;77]	13 min [2;37]	0.001

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