World journal of surgery · 2016
Clinical Outcomes of Thymectomy in Myasthenia Gravis Patients with a History of Crisis.
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Liu Zhenguo, Lai Yingrong, Yao Shiyuan, Feng Huiyu, Zou Jianyong, Liu Weibin, Lei Yiyan, Zhu Hua, Cheng Chao
Аннотация
BACKGROUND: The use of thymectomy in myasthenia gravis (MG) patients with a history of myasthenic crisis (MC) has not been well established. Here, we determined the efficacy of thymectomy by assessing the long-term clinical outcomes and reviewed thymectomy reports on MC patients.
METHODS: Subjects included 31 patients who suffered at least one crisis before surgery, with a cumulative total 73 episodes of MC in Southern China between May 2000 and December 2010. Long-term follow-up was performed and clinical outcomes were evaluated. We used complete stable remission (CSR), termed an asymptomatic status without medication for at least 12 months; general complete remission (GCR), termed an asymptomatic status with or without some form of therapy excluding cholinesterase inhibitors, to assess patient outcomes.
RESULTS: All patients underwent thymectomy with an overall complication rate of 16.1 % and a perioperative mortality rate of 3.2 %. Long-term follow-up occurred between 12.6 and 177 months, at which point 18 (58.1 %) patients experienced improved status, including one patient who achieved CSR; 13 (41.9 %) patients achieved GCR; 6 (19.4 %) showed unchanged status and one worse (3.2 %) status. The remaining 6 patients died, with 3 due to MG-related causes. Using a multivariate Cox regression analysis of GCR by characteristics, patients with better response to medical treatments before thymectomy were positively associated with GCR rates (p = 0.028).
CONCLUSIONS: Extended transsternal thymectomy is a feasible and effective therapy for MG patients with crisis history, especially for those patients who have shown positive signs of remission after exhausting conventional medical treatments.
METHODS: Subjects included 31 patients who suffered at least one crisis before surgery, with a cumulative total 73 episodes of MC in Southern China between May 2000 and December 2010. Long-term follow-up was performed and clinical outcomes were evaluated. We used complete stable remission (CSR), termed an asymptomatic status without medication for at least 12 months; general complete remission (GCR), termed an asymptomatic status with or without some form of therapy excluding cholinesterase inhibitors, to assess patient outcomes.
RESULTS: All patients underwent thymectomy with an overall complication rate of 16.1 % and a perioperative mortality rate of 3.2 %. Long-term follow-up occurred between 12.6 and 177 months, at which point 18 (58.1 %) patients experienced improved status, including one patient who achieved CSR; 13 (41.9 %) patients achieved GCR; 6 (19.4 %) showed unchanged status and one worse (3.2 %) status. The remaining 6 patients died, with 3 due to MG-related causes. Using a multivariate Cox regression analysis of GCR by characteristics, patients with better response to medical treatments before thymectomy were positively associated with GCR rates (p = 0.028).
CONCLUSIONS: Extended transsternal thymectomy is a feasible and effective therapy for MG patients with crisis history, especially for those patients who have shown positive signs of remission after exhausting conventional medical treatments.