...管食管静脉曲张的患者，国外guidelines多提倡内镜下套扎治疗（EVL），尤其是对出血高危患者的预防性治疗（prophylactic therapy），相对否定内镜下硬化治疗
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Tests of prophylactic therapy of dental caries and periodontal diseases and oral health knowledge have poor results.
龋齿与牙周疾病的防治知识及口腔保健知识测试结果普遍较差。
The variability in the individual degree of response to these drugs in multi arm trials suggests clinicians and patients work together to identify the most effective prophylactic therapy.
在多重组别试验中，这些药物的不同反应程度表示：临床医师和病患应共同合作，以期找出最为有效的预防性治疗。
Conclusion: Prophylactic antibiotics therapy on patients with severe viral hepatitis is effective in preventing nosocomial infection.
结论：预防性抗生素应用可降低重型病毒性肝炎病人医院感染发生率。
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