Retrospective Study
Copyright ©The Author(s) 2025.
World J Clin Cases. Mar 6, 2025; 13(7): 95430
Published online Mar 6, 2025. doi: 10.12998/wjcc.v13.i7.95430
Table 1 Baseline clinical characteristics, n (%)/mean ± SD/median (25th-75th percentiles)
Variable
IAH
Non-IAH
Normonatremia
P value
(n = 62)
(n = 41)
(n = 54)
Age, years66.20 ± 15.4066.10 ± 16.9065.30 ± 15.100.956
Sex (Female)22 (35.48)10 (24.39)18 (33.33)0.476
Comorbidities
Hypertension31 (50.00)23 (56.10)24 (44.44)0.530
Diabetes mellitus16 (25.81)9 (21.95)10 (18.52)0.611
CHD4 (6.45)1(2.44)4 (7.41)0.626
Cerebral infarction10 (16.13)6 (14.63)3 (5.56)0.186
SAE20 (32.23)24 (58.54)13 (24.07)0.002
Laboratory parameters
K+, mmol/L3.89 ± 0.623.92 ± 0.834.17 ± 0.740.078
Ca2+, mmol/L1.08 (1.04, 1.17) 1.08 (1.02, 1.20)1.09 (1.06, 1.12)0.895
Cl-, mmol/L102.85 (98.03, 106.03)103.20 (98.50, 112.05)100.30 (96.63, 104.03)0.019
SCr, µmol/L148.50 (91.30, 214.73)116.80 (73.85, 190.10)113.55 (72.00, 297.38)0.524
BUN/SCr216.23 (149.83, 264.87)267.56 (194.18, 371.69)185.06 (133.73, 250.25)0.001
BUN, mmol/L18.90 (11.15, 25.88)20.81 (13.20, 29.55)15.00 (11.43, 24.14)0.185
ALB, g/L26.23 ± 5.5527.55 ± 3.7127.52 ± 5.400.290
Serum prealbumin, mg/L68.35 (50.55, 100.45)63.40 (38.45, 86.55)81.20 (63.68, 118.38)0.042
PCT, ng/mL11.29 (3.40, 50.00)9.87 (3.18, 31.61)14.58 (2.40, 34.00)0.964
WBC, 109/L19.12 ± 11.1218.47 ± 9.4121.31 ± 11.340.387
CRP, mg/L191.49 ± 92.02206.49 ± 86.19166.42 ± 84.560.083
Lym, 109/L0.34 (0.20, 0.53)0.35 (0.20, 0.62)0.40 (0.21, 0.63)0.765
NT-proBNP, ng/L2673 (806, 8020)4221 (635, 14221)3220 (912, 10625)0.720
Myo, ng/mL329 (146, 575)706 (316, 1952)259 (120, 630)0.008
Body temperature max, °C38.15 (37.40, 38.60)37.80 (37.50, 38.40)37.50 (37.20, 38.10)0.017
Delirium12 (19.35)9 (21.95)8 (14.81)0.657
Interventions
MV45 (72.58)34 (82.93)27 (50.00)0.002
CRRT24 (38.71)18 (43.90)18 (33.33)0.573
Clinical scores
GCS score6.00 (5.00, 10.00)5.00 (3.00, 6.00)6.50 (3.00, 9.75)0.109
APACHE II score17.49 ± 5.5221.72 ± 6.4016.38 ± 8.300.001
qSOFA score1 (1, 2)2 (1, 2)2 (1, 2)0.239
SOFA score10.31 ± 3.9810.64 ± 4.089.48 ± 5.410.444
SIRS56 (90.32)36 (87.80)50 (92.59)0.498
Pathogenic
G+ bacteria7 (11.29)2 (4.88)10 (18.52)0.126
G- bacteria31 (50.00)29 (70.73)19 (35.19)0.003
Fungi5 (8.06)3 (7.32)8 (14.81)0.380
G+ and G- bacteria, n (%)4 (6.45)1 (2.44)2 (3.70)0.594
G+ bacteria and fungi, n (%)1 (1.61)0 (0.00)1 (1.85)0.695
G- bacteria and fungi3 (4.84)1 (2.44)2 (3.70)0.823
Time
ICU LOS, days16.50 (8.75, 26.75)12.00 (5.00, 25.50)5.00 (2.00, 12.00)< 0.001
LOS outside the ICU, days0.00 (0.00, 9.00)0.00 (0.00, 7.00)2.00 (0.00, 11.25)0.155
Died within 14 days22 (35.48)22 (53.66)20 (37.04)0.146
Table 2 Univariate analysis for risk factors of intensive care unit-acquired hypernatremia in septic shock patients, n (%)/mean ± SD

IAH
Normonatremia
Univariate
P value
(n = 62)
(n = 54)
OR (95%CI)
Diabetes mellitus17 (27.42)10 (18.52)1.66 (0.69-4.03)0.26
Kidney insufficiency3 (4.84)10 (18.52)0.22 (0.06-0.86)0.029
Body temperature max, °C38.15 (37.40-38.60)37.50 (37.20-38.10)1.17 (0.85-1.60)0.348
Urine volume, ml
1st + 2nd + 3rd5775.00 (2908.75-7512.50)3730.00 (257.50, 5732.50)1.10 (1.04-1.17)0.002
The sodium content of EN
315 mg13 (20.97)7 (12.96)1.78 (0.65-4.85)0.259
500 mg26 (41.94)10 (18.52)3.18 (1.36-7.45)0.008
670 mg19 (30.65)4 (7.41)5.52 (1.74-17.49)0.004
Diuretic43 (69.35)26 (48.15)2.44 (1.14-5.21)0.021
Mannitol8 (12.90)4 (7.41)1.85 (0.53-6.53)0.338
Glucocorticoids37 (59.68)27 (50.00)1.48 (0.71-3.09)0.296
Blood glucose max, mmol/L10.86 ± 3.629.73 ± 3.511.09 (0.98-1.22)0.095
CRP, mg/L191.49 ± 92.02166.42 ± 84.561.00 (1.00-1.01)0.135
Lym, 109/L0.34 (0.20, 0.53)0.39 (0.21, 0.62)0.71 (0.31-1.62)0.419
Serum prealbumin, mg/L68.35 (50.55, 100.45)81.20 (63.68, 118.38)0.99 (0.98-1.00)0.073
ALB, g/L26.23 ± 5.5527.52 ± 5.400.96 (0.89-1.03)0.209
BUN, mmol/L18.90 (11.15, 25.88)15.00 (11.43, 24.14)1.00 (0.98-1.03)0.833
BUN/SCr227.44 ± 117.94198.05 ± 90.721.00 (1.00-1.01)0.144
APACHE II score17.49 ± 5.5216.38 ± 8.301.02 (0.97-1.08)0.402
SOFA score10.31 ± 3.989.48 ± 5.411.04 (0.96-1.13)0.356
SIRS, n (%)58 (93.55)52 (96.30)0.56 (0.10-3.17)0.51
Table 3 Multivariate analysis for independent risk factors of intensive care unit-acquired hypernatremia in septic shock patients, n (%)

IAH
Normonatremia
Multivariate
P value
(n = 62)
(n = 54)
OR (95%CI)
Kidney insufficiency3 (4.84)10 (18.52)0.37 (0.08-1.67)0.197
Urine volume, ml
1st + 2nd + 3rd5775 (2908.75, 7512.5)3730 (257.5, 5732.5)1.09 (1.02-1.17)0.014
The sodium content of EN
500 mg26 (41.94)10 (18.52)2.93 (1.13-7.60)0.027
670 mg19 (30.65)4 (7.41)6.19 (1.75-21.98)0.005
Diuretics-43 (69.35)26 (48.15)1.87 (0.78-4.47)0.159
Table 4 Areas under the receiver operator curves presented of predicting intensive care unit-acquired hypernatremia
Variable
AUC
95%CI
P value
Urine volume 1st + 2nd + 3rd0.80 0.68-0.920.001
Urine volume 1st0.75 0.60-0.900.008
Urine volume 2nd0.77 0.63-0.910.004
Urine volume 3rd0.78 0.65-0.910.003
The sodium content of EN0.60 0.43-0.780.274