Results: (i) Serum concentration of ADH 42.21 ± 47.80 pg / ml. (ii) There is a negative correlation between serum levels of ADH with: (1) Glasgow point r = - 0.323, p <0.01; (2) Plasma sodium concentration r = - 0.211, p > 0.05; (3) Plasma osmotic pressure r = - 0.218, p> 0.05.