The therapy group was treated with external direct current cardioversion.
治疗组20例，给予体外同步直流电复律治疗；
For this issue, the method, which is the quality controlling of spot welding in the external direct current magnetic field, will be discussed by this article.
针对这个问题，本文探讨了外加直流磁场改善点焊质量的方法。
Conclusions External direct current cardioversion is of high reliability and can reduce the ratio of untoward reaction in pregnancy women with paroxysmal supraventricular tachycardia.
结论体外直流电复律治疗阵发性室上性心动过速的妊娠患者，安全有效，且不良反应发生率低。
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