Table 3

Biochemical parameters stratified by delirium status
Delirium No delirium p-value
Biochemical parameters, mean (SD)a
 Blood urea at admission, mg/dL 86.11 (67.57) 58.22 (50.97) 0.001
 Blood urea at discharge, mg/dL 84.56 (70.15) 54.54 (45.25) 0.006
 Hemoglobin at admission, g/dL 10.5 (2.7) 11.3 (2.6) 0.038
 Hemoglobin at discharge, g/dL 10.0 (1.7) 10.8 (2.2) 0.030
 Creatinine at admission, mg/dL 1.99 (1.66) 1.55 (1.56) 0.006
Osmolarity, mOsm/L, mean (SD)d 320.55 (23.20) 308.74 (17.37) 0.001

aOnly statistical significant results are presented. Urea admission (Delirium, n = 57; No Delirium, n = 216); urea discharge (Delirium, n = 55; No Delirium, n = 212); hemoglobin admission (Delirium, n = 56; No Delirium, n = 221); hemoglobin discharge (Delirium, n = 56; No Delirium, n = 222); creatinine admission (Delirium, n = 57; No Delirium, n = 218). dPlasma osmolarity measures the body's electrolyte-water balance [osmolarity = (2*sodium) + (glucose/18) + (blood urea nitrogen/3)], normal range 270-310 mOsm/L. Osmolarity calculated only for patients with all variable (sodium, glucose and blood urea) measurements at admission (Delirium, n = 48; No Delirium, n = 175). SD = standard deviation.

Mariz et al.

Mariz et al. BMC Emergency Medicine 2013 13:2   doi:10.1186/1471-227X-13-2

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