Table 2

Classification of cases according to documented aetiology of hyponatraemia

AetiologyOverall
(N=42), n (%)
Hypovolaemic23 (54.7)
 Gastrointestinal Na losses9 (21.4)
 Poor oral intake7 (16.6)
 Diuretics6 (14.3)
 Adrenal insufficiency1 (2.4)
Euvolaemic11 (26.2)
 SIADH due to pneumonia4 (9.5)
 Drug-induced SIADH3 (7.1)
 Malignant SIADH2 (4.8)
 Miscellaneous causes2 (4.8)
Hypervolaemic8 (19.1)
 Decompensated cirrhosis4 (9.5)
 Heart failure4 (9.5)
  • SIADH, Syndrome of inappropriate antidiuretic hormone secretion.