The Association of Perioperative Serum Lactate Levels with Postoperative Delirium in Elderly Trauma Patients

Table 3

Perioperative serum lactate levels according to the severity of ISS in patients with delirium.

	Major trauma (n = 280)	Minor trauma (n = 166)	value
Postoperative delirium	127 (45.3)	43 (25.9)
Serum lactate level on admission (mM/L)	2.48 ± 0.52	2.25 ± 0.55
Serum lactate level 1 hour after surgery (mM/L)	2.64 ± 0.70	2.47 ± 0.92

Values are expressed as mean ± SD or number (%) of patients. ISS: injury severity score. Major trauma is defined as ISS > 15. Minor trauma is defined as ISS ≤ 15).