Abstract
Background Qiangji Jianli capsule or Qiangji Jianli Tang is a drug consisting of some medicinal herb, which has been used in the treatment of MG for many years. Some research suggests this drug can promote the contraction strength of the diaphragm muscle, which plays an important role for the ventilation of lung. Based on this theory we raised the hypothesis that preoperative medication of Qiangji Jianli method may decrease the incidence of postoperative myasthenic crisis. Neutrophil to lymphocyte ratio (NLR) is used as a marker of subclinical inflammation. Some researchers suggested that increased preoperative NLR is associated with poor prognosis of various cancers. The purpose of this study is to evaluate that if the preoperative use of Qiangji Jianli method has a meaningful value in the prevention of postoperative myasthenic crisis. We also will explore the dynamic change of the NLR during the perioperative period.
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