Table 2 Characteristics and outcomes by the potassium level on admission
Potassium level on admission (mEq/L) | <3.0 | 3.0–<3.5 | 3.5–<4.0 | 4.0–<4.5 | 4.5–<5.0 | ≥5.0 | p value |
|---|---|---|---|---|---|---|---|
No. of patients (%) | 36 (6.9) | 191 (36.7) | 195 (37.5) | 78 (15) | 13 (2.5) | 7 (1.3) | |
Age, year, median [IQR] | 38 [16, 61.75] | 53 [28.5, 69.5] | 64 [42, 74.5] | 68.5 [60.5, 80] | 75 [56, 86] | 51 [44, 70] | <0.001 |
Sex, male, n (%) | 26 (72.2) | 119 (62.3) | 137 (70.3) | 61 (78.2) | 10 (76.9) | 2 (28.6) | 0.03 |
Transferred from another hospital, n (%) | 6 (16.7) | 30 (15.7) | 49 (25.1) | 20 (25.6) | 4 (30.8) | 2 (28.6) | 0.14 |
Vital signs on admission | |||||||
SBP, median [IQR] | 139 [119.25, 157.5] | 131 [109, 148] | 134 [110.5, 156] | 136 [104.75, 155] | 107 [77, 119] | 122 [92.5, 123.5] | 0.04 |
Heart rate, median [IQR] | 94 [78.5, 111.5] | 90 [75.5, 105] | 86 [73.5, 101] | 89.5 [73.5, 106.5] | 96 [81, 115] | 101 [80, 111] | 0.45 |
RR, median [IQR] | 22 [15.75, 30] | 20 [16, 24] | 20 [15, 25] | 20.5 [16.25, 27.75] | 23 [18, 30] | 14 [14, 19.5] | 0.27 |
GCS, median [IQR] | 8.5 [3, 13] | 15 [11, 15] | 15 [13, 15] | 15 [13, 15] | 14 [7, 15] | 5 [3, 11] | <0.001 |
Temperature, °C, median [IQR] | 36.05 [35.65, 36.52] | 36.20 [35.50, 36.70] | 36.20 [35.50, 36.80] | 36.20 [35.62, 36.60] | 35.60 [35.50, 36.60] | 35.90 [35.25, 36.90] | 0.79 |
Scores | |||||||
ISS, median [IQR] | 26 [21.75, 41.5] | 25 [19, 29] | 25 [19, 30] | 26 [21, 34] | 25 [20, 34] | 25 [21.5, 27.5] | 0.39 |
RTS, median [IQR] | 5.97 [4.09, 7.55] | 7.84 [6.61, 7.84] | 7.84 [6.90, 7.84] | 7.84 [6.69, 7.84] | 7.11 [5.23, 7.55] | 5.03 [3.73, 6.90] | <0.001 |
TRISS Ps, median [IQR] | 0.80 [0.39, 0.94] | 0.91 [0.78, 0.97] | 0.89 [0.78, 0.94] | 0.86 [0.66, 0.93] | 0.86 [0.33, 0.89] | 0.63 [0.42, 0.87] | <0.001 |
Outcomes | |||||||
LSI for bleedinga, n (%) | 7 (19.4) | 33 (17.3) | 47 (24.1) | 21 (26.9) | 5 (38.5) | 4 (57.1) | 0.05 |
Craniotomy, n (%) | 12 (33.3) | 25 (13.1) | 16 (8.2) | 7 (9.0) | 3 (23.1) | 1 (14.3) | <0.01 |
In-hospital mortality, n (%) | 7 (19.4) | 8 (4.2) | 14 (7.2) | 10 (12.8) | 3 (23.1) | 2 (28.6) | <0.01 |