制酸药，全称为胃酸分泌抑制药，通过中和胃酸、抑制胃酸分泌所需的H2受体或H+-K+-ATP酶，从而降低胃酸浓度，起到护胃作用。
结果：VAP的发生率为35.2%，其发生可能与气管插管的方式、插鼻胃管、使用肌松镇静药、制酸药和广谱抗生素等有关。
Results: the morbidity of VAP was 35.2%. The agent may relate to the mode of tracheal intubation? Gastric tube interpolation?
结果表明，制得的酒石酸美托洛尔缓释片具有明显的缓释作用，体外释放符合一级释药动力学规律。
The results indicated that the sustained-release tablets had an expected sustained-release quality, and drug release pattern was in accorded with the first order kinetics.
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