目的  横断面调查连续性肾脏替代治疗(continuous renal replacement therapy，CRRT)后非隧道式导管封管前冲洗液使用现状，为导管功能维护与护理提供参考。 方法  采用问卷星对广东省78家医院进行调查，了解CRRT后非隧道式导管封管前冲洗液使用类型、剂量和使用注射器类型等。 结果  共收集问卷91份，有效问卷78份(排除来自同一医院的问卷13份)，有效率85.7%。参与调查的CRRT护士的平均年龄为(33.78±5.97)岁，其中男性占19.2%，主管护师及以上职称占56.4%。生理盐水是CRRT后冲管的常见药物(97.5%)，2家医院使用灭菌注射用水为冲管液。不同医院生理盐水冲管液剂量：5 ml[12(14.5%)]、10 ml[47(56.6%)]、15 ml[5(6.0%)]和20 ml[19(22.9%)]；冲管使用的注射器容量类型有5 ml[1(1.2%)]、10 ml[29(35.4%)]、20 ml[45(54.9%)]和30 ml[7(8.5%)]。 结论 生理盐水是CRRT后非隧道式导管封管前冲洗液的主要类型，生理盐水冲洗剂量与使用注射器类型有多种形式。

Objective  This was a cross-sectional study to investigate the use of flushing solutions before locking solution for non-tunneled catheters after continuous renal replacement therapy (CRRT), in order to provide a reference for maintenance and care of the catheters.  Methods A questionnaire survey was conducted using the Wenjuanxing online survey to investigate the 78 hospitals in Guangdong province in order to understand the type and dose of flushing solution and the type of syringe used for non-tunneled catheters after CRRT.  Results A total of 91 questionnaires were collected, and 78 were effective after excluding 13 questionnaires from the same hospitals, with an effective rate of 85.7%. The average age of the nurses conducting CRRT was 33.78±5.97 years, with 19.2% of males and 56.4% having the senior professional titles. Normal saline was the most commonly used solution (97.5%) for flushing after CRRT, while sterilized water for injection was used in two hospitals. The volume of normal saline used for flushing was variable in the hospitals: 5ml in 12 hospitals (14.5%), 10ml in 47 hospitals (56.6%), 15ml in 5 hospitals (6.0%), and 20ml in 19 hospitals (22.9%). The volume of syringe used for flushing was 5ml in one hospital (1.2%), 10ml in 29 hospitals (35.4%), 20ml in 45 hospitals (54.9%), and 30ml in 7 hospitals (8.5%).  Conclusion Normal saline is the main flushing solution for non-tunneled catheters after CRRT, but the volume of normal saline and the type of syringe for the injection are variable in these hospitals.