摘要该文报道1例尿毒症患者行透析导管置管过程中发现孤立性永存左上腔静脉（persistent left superior vena cava，PLSVC）并发生导丝嵌顿Chiari网现象。患者因终末期肾病、急性左心功能衰竭拟行急诊透析，行带隧道和涤纶套的透析导管（tunnel-cuffed catheter，TCC）置入，造影过程中发现孤立性PLSVC，操作导丝时发现右心房水平嵌顿，在操控导丝过程中导丝松动并带出一条细纤维丝，考虑为Chiari网嵌顿可能。1周后随访，患者透析导管使用良好，透析脱水后心功能改善。

abstractsThe article reports a rare case of isolated persistent left superior vena cava (PLSVC) found during the catheterization of a dialysis catheter in an end-stage renal disease patient and the occurrence of guidewire entrapment in Chiari net. The patient was scheduled to have emergency dialysis due to end-stage renal disease and acute left heart failure. And a tunnel-cuffed catheter (TCC) for dialysis insertion was planned. Isolated PLSVC was found firstly by the imaging process. Then the guidewire was entrapped at the right atrium in the further operation. During the operation of the guidewire, the guidewire loosened and withdrawn with a fine fiber, which was considered a possibility of Chiari net. In the follow-up after one week, the TCC worked well, and the heart function improved after dialysis.