Abstract
[Purpose] The response of enteral nutrition formulas to different pH solutions was observed and the preventive effect of 1% sodium bicarbonate solution on enteral feeding tube obstruction was examined.
[Methods] Either 0.1N HCl, 1% sodium bicarbonate, or 0.1N NaOH solution was added to each of two enteral nutrition formulas (Ensure Liquid®, or Racol®), and the effect of pH on curdling of these formulas was examined. We also evaluated the efficacy of 1% sodium bicarbonate in patients with recurrent feeding tube obstruction.
[Results] After addition of 0.1N HCl, both of the enteral nutrition formulas became curdled. On the other hand, no changes were observed after adding of 1% sodium bicarbonate or 0.1N NaOH. The curdling induced by 0.1N HCl was dissolved by adding 1% sodium bicarbonate or 0.1N NaOH. In patients with recurrent feeding tube obstruction, flushing the tube periodically with 1% sodium bicarbonate prevented obstruction.
[Conclusion] Flushing with 1% sodium bicarbonate is useful for prevention of feeding tube obstruction.
