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Pulsatile Flushing Technique in Reducing Blockage of T-CVAD for Haemodialysis Patients
Sponsor: Queen Elizabeth Hospital, Hong Kong
Summary
This study investigates the effectiveness of pulsatile flushing techniques in reducing blockage in Tunnelled Central Venous Access Device (T-CVAD) among patients undergoing haemodialysis (HD) treatment at multiple renal centres within the Hospital Authority (HA) in Hong Kong. With limitation in single service protocol for each cluster of renal units, it is designed as a prospective, parallel, cluster non-randomised controlled trial involving 591 patients from 14 renal units. In order to identify the most effective flushing technique for T-CVAD maintenance, survival analysis on clinical effectiveness, in terms time-to-event blockage of the T-CVAD, among three trial arms: 1) Intervention Group A (IG-A) using pulsatile flushing technique with 0.4 second pause time interval; 2) Intervention Group B (IG-B) using pulsatile flushing technique with 1 second pause time interval; 3) Control Group (Con) using standard bolus flushing technique. The findings facilitate development of best practice for T-CVAD maintenance, optimise T-CVAD maintenance protocols, and ultimately improve patient outcomes. This groundbreaking study is expected to signify substantial progression in the nursing management of HD and T-CVAD.
Official title: Exploring the Effectiveness of Pulsatile Flushing Technique in Reducing Blockage of the Tunnelled Central Venous Access Device Among Haemodialysis Patients in Multiple Renal Centres in Hong Kong: A Cluster Non-Randomised Controlled Trial Study
Key Details
Gender
All
Age Range
18 Years - Any
Study Type
INTERVENTIONAL
Enrollment
591
Start Date
2026-02-02
Completion Date
2027-12
Last Updated
2026-05-11
Healthy Volunteers
No
Conditions
Interventions
Pulsatile Flushing Technique (0.4s pause interval)
Pulsatile flushing technique consists of multiple small boluses injected intermittently with 0.4-second pauses between each bolus resulting in unsteady turbulent flow, performed by a renal nurse who passed a formal train-the-trainer program on "pulsatile flushing technique" taught and assessed by designated nurse consultant (renal care).
Pulsatile Flushing Technique (1s pause interval)
Pulsatile flushing technique consists of multiple small boluses injected intermittently with 1-second pauses between each bolus resulting in unsteady turbulent flow, performed by a renal nurse who passed a formal train-the-trainer program on "pulsatile flushing technique" taught and assessed by designated nurse consultant (renal care).
Bolus Flushing Technique
Bolus flushing technique involves the continuous administration of a single, concentrated volume of flush solution resulting in consistent laminar flow
Locations (1)
Queen Elizabeth Hospital
Kowloon, Hong Kong