The efficacy of oral and rectal administration of sodium phosphate monobasic and dibasic solution (NaP) combined with bisacodil per oral, as drugs to prepare the colon for rigid colonoscopy in dogs was compa1ed. Clinical parameters; colonic cleaning, plasma concentration of calcium, potassium (K+), sodium (Na+), magnesium (Mg+), creatinine, and albumin, and complete blood count were evaluated. In both groups, all electrolytes presented alterations, with significant reduction of the levels of K+ and Mg+, but there were no electrocardiographic alterations. No difference in the reduction of bacterial population was observed between the two groups. The results were similar regarding the incidence of side effects; however, the rectal route presented less fecal retention in colon and could get patients ready for the procedure faster. The preparation of bowel with bisacodil and NaP solution by rectal route was more effective and could be recommended for colonoscopy in dogs.
dog; oral phosphosoda; rectal phosphosoda; bowel cleasing; low endoscopy
