COMPARISON OF CARBOXY-METHYLCELLULOSE, TANNIC ACID AND NO ADDITIVE IN BARIUM EXAMINATIONS OF THE COLON

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Abstract
Laboratory tests were made to evlauate the viscosity, stability, settling properties, and adhesiveness of USP barium sulfate, barium suspensions with 0.2, 0.5 and 1.0 per cent carboxy-methylcellulose, and of barium suspensions with 0.25 per cent tannic acid added. The postevacuation roentgenograms of 1,000 barium enema examinations were compared, 200 examinations being performed with each of these 5 barium mixtures. The results show that 1.0 per cent carboxy-methylcellulose has a comparable stabilizing effect in barium suspensions and enhances mucosal coating equally as well as a 0.25 per cent concentration of tannic acid, without the possible undesirable toxic reactions of high concentrations of the latter, and that both are preferable to lower concentrations of carboxy-methylcellulose. Further investigation is necessary to continue improving the suspension of barium mixtures.

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