The blood acid-base status was studied in equines when induced large colon impaction was followed by applying an isotonic polionic enteral solution, or sene associated with intravenous fluid therapy, or fluid therapy alone. The blood samples were collected in twenty animals, four groups (E8, RL, SE, and C) of five animals each. Animals of the treated groups had experimentally induced colon impactions. Equines in group E8 received isotonic polionic enteral solution (8 mL kg-1 h-1 48 h-1); in group SE, sene was applied at 20mg kg-1, two doses per animal, at 24-hour intervals, along with the Ringer lactate IV, 10mL kg-1 h-1, 12 h-1, both during two days; and in the RL animals received Ringer lactate IV only (16mL kg-1 h-1 12h-1), applied during two days. Group C was the non-treated control. Among the tested treatments, the intravenous fluid therapy with Ringer solution (RL) alone was the most efficient to correct the blood gas parameters in horses with large colon impaction. The isotonic polionic enteral solution (E8) and sene associated with intravenous fluid therapy (SE) were also efficient, although less so than Ringer solution alone.
equine; blood gas analysis; fluid therapy; impaction; large colon
