Median (IQR) or % (n) n = 81

Age (yrs)

76 (66 - 87)

Gender (% females)

65 (53)

P-Na at admission (mmol/L)

119 (114 - 122)

Systolic blood pressure

140 (130 - 169)

Diastolic blood pressure

76 (65 - 90)

Morbidities:

Previous P-Na < 125 mmol/L

30 (24)

Alcohol abuse

12 (10)

Hypertension

63 (51)

Heart failure

17 (14)

Kidney failure

5 (4)

Diabetes mellitus

19 (15)

Liver cirrhosis

4 (3)

Malignancy

11 (9)

Drug treatment:

Thiazide diuretics

32 (26)

Loop diuretics

24 (19)

Spironolactone

14 (11)

Potassium sparing diuretics

10 (8)

ARB

20 (16)

ACEi

11 (9)

SSRI

14 (11)

Tricyclic antidepressants

1 (1)

Mirtazapine

6 (5)

Opioids

6 (5)

Antiepileptics

5 (4)

Cortisone

9 (7)

S-osm (mOsm/kg, n = 31)

262 (250 - 272)

U-osm (mOsm/kg, n = 37)

350 (262 - 504)

U-Na (mmol/L, n = 32)

60 (28 - 80)

S-cortisol (nmol/L, n = 45)

543 (438 - 857)

TSH (mU/L, n = 63)

2 (1 - 10)

Krea (µmol/L, n = 80)

71 (55 - 90)

CRP (mg/L, n = 80)

14 (2 - 45)

Glucose (mmol/L, n = 76)

7 (6 - 9)