During withdrawal a coil became stuck, stretched and finally detached inside the guidingcatheter.
撤军期间成为坚持一个线圈，延伸，并最终脱离的指导导管内。
2
Objective to evaluate the guiding value of electrocardiogram to bedside urgent cardiac pacing by invading mapping electrode catheter.
目的探讨体表心电图对标测电极导管进行床边紧急心脏起搏的指导价值。
3
Conclusion: Interventional therapy of guiding method of coaxial catheter is a simple, effective and practical method for treating obstruction of fallopian tube.