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产气剂用于胃低张双对比法钡歺造影。一般常用的产气剂大都是碳酸氢钠和枸橼酸或酒石酸组成.性质不稳定,使产气量下降,难以长期保存。产气剂不稳定的主要原因是由于水份的存在,促使了酸碱之间的中和反应。针对上述原因,为了增加产气剂的稳定性,我们在原处方中加入少量吸水剂,取得了较为满意的结果。一、实验方法1.吸水剂用量的选择:称取枸橼酸1.42g和碳酸氢钠1.70g,共若干份,分为三组,分别加入碳酸镁(A)、二氧化硅、
Gas-generating agent for gastric low contrast double contrast barium 歺 angiography. Commonly used gas generating agents are mostly composed of sodium bicarbonate and citric acid or tartaric acid composition instability, so that gas production decreased, difficult to long-term preservation. The main reason for the gas-generating agent instability is due to the presence of water, prompting the neutralization reaction between acid and alkali. For the above reasons, in order to increase the stability of the gas-generating agent, we add a small amount of water-absorbing agent in the original prescription, and achieved satisfactory results. First, the experimental methods 1. Absorbent dosage options: Weigh citric acid 1.42g and sodium bicarbonate 1.70g, a total of several copies, divided into three groups were added magnesium carbonate (A), silica,