常规负压置换疗法是保守治疗慢性鼻窦炎的一种较有效的办法。置换疗法以引流为基础 ,通过置换达到治疗的目的。由于常规置换疗法对鼻腔窦口粘膜收缩不良 ,置换的药液量少 ,负压不足 ,故置换欠彻底、疗效欠佳。新近 ,我们对常规置换疗法进行了改进 ,经临床应用 ,疗效满意。现介 Conventional negative pressure replacement therapy is a conservative treatment of chronic sinusitis a more effective way. Replacement therapy to drainage based on the purpose of treatment by replacement. As a result of conventional replacement therapy on the nasal sinus mucosa poor contraction, the replacement of the liquid less, less negative pressure, so the lack of thorough replacement, poor efficacy. Recently, we have improved the conventional replacement therapy, the clinical application, the effect is satisfactory. Presently