Table 1 Baseline characteristics in categories of mean potassium range, n = 53,248 patients
Characteristics | 3.0–3.5 mmol/l | > 3.5–4.0 mmol/l | > 4.0–4.5 mmol/l | > 4.5–5.0 mmol/l | > 5.0–5.5 mmol/l | >5.5 mmol/l |
|---|---|---|---|---|---|---|
Number of patients | 3333 | 20,790 | 20,599 | 7312 | 950 | 264 |
Age | 64 [51/74] | 63 [50/74] | 67 [56/75] | 69 [60/76] | 65 [54/75] | 60 [48/71] |
Gender (%) | ||||||
Female/male | 2249 (67.5)/1084 (32.5) | 10,904 (52.4)/9886 (47.6) | 7739 (37.6)/12,860 (62.4) | 2303 (31.5)/5009 (68.5) | 313 (32.9)/637 (67.1) | 85 (32.2)/179 (67.8) |
APACHE II score | 11.00 [5.00/17.00] | 11.00 [5.00/16.00] | 12.00 [6.00/19.00] | 15.00 [8.00/22.00] | 14.00 [5.00/21.00] | 15.00 [4.00/23.00] |
SOFA score (mean) | 1.40 [0.40/3.00] | 1.50 [0.33/2.89] | 2.00 [0.50/3.75] | 2.90 [1.33/4.63] | 2.50 [0.50/4.51] | 2.50 [0.00/5.29] |
SAPS II | 26.00 [14.00/37.00] | 25.00 [13.00/36.00] | 29.00 [17.00/41.00] | 34.00 [22.00/50.00] | 31.00 [14.00/44.00] | 29.00 [13.00/48.00] |
Length of ICU stay (h) | 23.95 [15.25/69.45] | 25.90 [16.60/75.90] | 45.90 [19.30/138.60] | 85.20 [23.50/167.90] | 27.90 [14.80/85.25] | 22.45 [10.40/74.15] |
Mean glucose level (mg/dl) n = 43,694 | 116.00 [100.50/138.50] | 117.67 [102.50/138.02] | 126.00 [108.07/148.70] | 135.86 [117.41/158.00] | 125.36 [105.00/156.00] | 116.50 [92.77/150.50] |
Mean glucose SD (mg/dl) n = 33,031 | 17.79 [9.19/29.70] | 19.09 [11.02/30.37] | 23.50 [14.00/35.70] | 29.02[20.23/42.33] | 26.06 [16.28/40.88] | 19.05 [7.82/39.92] |
Glucose min (mg/dl) n = 43,694 | 103.00 [88.00/123.00] | 99.00 [87.00/118.00] | 97.00 [84.00/118.00] | 91.00 [77.00/109.00] | 91.50 [77.00/122.00] | 93.00 [74.50/127.00] |
Glucose max (mg/dl) n = 43,694 | 129.00 [107.00/159.00] | 137.00 [112.00/172.00] | 157.00 [121.00/210.00] | 193.00 [144.00/252.00] | 164.00 [125.00/216.00] | 138.00 [106.50/187.50] |
Sodium mean (mmol/l) | 139.20 [137.00/141.00] | 139.00 [137.20/140.82] | 138.75 [136.92/140.50] | 138.50 [136.68/140.16] | 137.77 [135.98/139.63] | 137.48 [135.71/139.10] |
ph value mean n = 30,558 | 7.41 [7.38/7.45] | 7.40 [7.37/7.43] | 7.40 [7.37/7.43] | 7.39 [7.36/7.41] | 7.35 [7.31/7.39] | 7.33 [7.24/7.37] |
Patients with mechanical ventilation (%) | 603/3319 (18.2) | 4026/20,721 (19.4) | 7111/20,515 (34.7) | 3450/7275 (47.4) | 284/948 (30.0) | 80/263 (30.4) |
Patients receiving renal replacement therapy (%) | 93/3319 (2.8) | 798/20,721 (3.9) | 1995/20,515 (9.7) | 1457/7275 (20.0) | 394/948 (41.6) | 126/263 (47.9) |
ICD-10 diagnoses number of patients with positive diagnosis/absolute numbers (in %) | ||||||
Diabetes mellitus | 1133/3333 (34.0) | 6591/20,790 (31.7) | 8234/20,599 (40.0) | 3597/7315 (49.2) | 424/950 (44.6) | 98/264 (37.1) |
AKI | 275/3333 (8.3) | 1632/20,784 (7.9) | 3333/20,592 (16.2) | 1774/7309 (24.3) | 242/950 (25.5) | 76/264 (28.8) |
CKD | 336/3333 (10.1) | 2848/20,784 (13.7) | 5151/20,592 (25.0) | 2951/7309 (40.4) | 674/950 (70.9) | 151/264 (57.2) |
Atrial fibrillation | 497/3333 (14.9) | 3557/20,784 (17.1) | 5521/20,592 (26.8) | 2751/7309 (37.6) | 262/950 (27.6) | 59/264 (22.3) |
Hypertension | 1692/3333 (50.8) | 10,027/20,784 (48.2) | 12,043/20,592 (58.5) | 5031/7309 (68.8) | 631/950 (66.4) | 141/264 (53.4) |
Hypokalaemia | 2217/3333 (66.5) | 9313/20,784 (44.8) | 8075/20,592 (39.2) | 2412/7309 (33.0) | 148/950 (15.6) | 37/264 (14.0) |
Hyperkalaemia | 39/33,333 (1.2) | 279/20,784 (1.3) | 934/20,592 (4.5) | 930/7309 (12.7) | 330/950 (34.7) | 115/264 (43.6) |