The biochemical profile of five healthy mares treated with polyethylene glycol 3350 (PEG); or polyethylene glycol 3350+Ringer lactate intravenous (PEG+RL); or enteral polionic isotonic solution (EPIS); or enteral polionic isotonic solution associated with Ringer lactate intravenous (EPIS+RL); or chloride sodium solution 0.9% (NaCl 0.9%) was evaluated. The parameters evaluated were: sodium, chloride, potassium, ionized calcium, phosphorus, total magnesium, total protein, albumin, creatinine, urea, and calculated serum osmolality of venous blood. PEG treatment did not alter biochemical parameters. PEG+RL decreased phosphorus. SIPE decreased phosphorus and increased chloride. The EPIS+RL caused an increase of sodium and NaCl 0.9% caused an increase of chloride and a reduction of serum osmolarity. It is concluded that PEG treatment associated with Ringer lactate solution can cause the appearance of hypophosphatemia, EPIS causes hyperchloremia, NaCl 0.9% decreases the serum osmolality and EPIS+RL causes hypernatremia.
equine; biochemistry; polyethylene glycol; solutions
