Table 2.
Characteristics of patients with hyponatremia in the follow-up.
| All | Hyponatremia NO | Hyponatremia YES | p value | |
|---|---|---|---|---|
| N = 683 | N = 516 | N = 167 | ||
| Male gender, n (%) | 358 (52.4) | 254 (49.2) | 104 (62.3) | 0.01 |
| Age: years, mean (SD) | 61.2 (17.4) | 60.3 (17.0) | 65.6 (18.2) | 0.01 |
| Older than 75 years old, n (%) | 171 (25.0) | 113 (21.9) | 58 (34.7) | 0.01 |
| BMI: kg/m2 mean (SD) | 29.0 (5.7) | 28.8 (5.2) | 29.9 (6.6) | 0.15 |
| Obesity, n (%) | 114 (38.8 ) | 82 (37.4) | 32 (42.7) | 0.42 |
| Diabetes, n (%) | 123 (18.0) | 66 (12.8) | 57 (34.7) | 0.01 |
| Hypertension, n (%) | 294 (43.1) | 191 (37.1) | 103 (61.1) | 0.00 |
| Ischemic cardiopathy, n (%) | 48 (7,0) | 24 (4.4) | 24 (14.0) | 0.01 |
| Heart failure, n (%) | 16 (2.4) | 5 (1.0) | 11 (6.8) | 0.01 |
| Stroke, n (%) | 58 (8.5) | 40 (7.8) | 18 (10.8) | 0.21 |
| Pneumopathy, n (%) | 118 (17.4) | 83 (16.1) | 35 (21.3) | 0.14 |
| Hepatopathy, n (%) | 23 (3.4) | 14 (2.7) | 9 (5.4) | 0.09 |
| Nephropathy, n (%) | 55 (8,1) | 21 (4.1) | 34 (20.5) | 0.01 |
| Cancer, n (%) | 60 (8.8) | 35 (6.8) | 25 (15.0) | 0.01 |
| Length of Stay days, mean (SD) | 12.4 (15.0) | 10.4 (12.0) | 19.4 (19.3) | 0.01 |
| Hyponatremia at admission | 224 (32.8) | 147 (28.5) | 77 (46.1) | 0.01 |
| ICU admission, n (%) | 100 (14.9) | 60 (11.8) | 40 (24.5) | 0.01 |
| Invasive ventilation, n (%) | 98 (14.6) | 59 (11.6) | 39 (23.9) | 0.01 |
| Corticoids, n (%) | 87 (14.7) | 47 (10.4) | 40 (28.0) | 0.01 |
| Death follow-up, n (%) | 45 (6.7) | 31 (6.1) | 14 (8.4) | 0.30 |
| Re-admission, n(%) | 45 (6.8) | 19 (3.8) | 26 (16.2) | 0.01 |
BMI: body mass index, SD: standard deviation.