
Exploratory randomized trial of 192 cancer patients demonstrates uniformly low catheter complications under standardized nurse-led port flushing protocols
AI-summarized from the linked source. Educational brief, not medical advice.
Brief summary
An exploratory randomized clinical trial of 192 cancer patients receiving standardized nurse-led care for totally implantable venous access devices found complication rates were uniformly low across 10 mL saline, 20 mL saline, and heparin lock flushing arms.
What NurseJet pulled from the source
Oncology clinicians continue to debate whether regular heparin locking remains necessary to prevent catheter occlusions in totally implantable venous access devices (TIVADs) or whether normal saline flushes provide adequate patency. In this single-center, prospective, exploratory, single-blind randomized trial conducted in Taiwan (NCT05707936), 192 oncology patients with TIVADs were randomized into three flushing groups: 10 mL normal saline, 20 mL normal saline, or heparin lock (100 units/mL), all delivered within a standardized, protocol-driven, nurse-led catheter care framework. Catheter-related complications were rare across the entire cohort. Only one catheter occlusion occurred (in the 10 mL saline group), while zero occlusions developed in either the 20 mL saline or heparin lock groups. Minor bleeding occurred in three participants, and zero catheter-related bloodstream infections (CRBSIs) or severe adverse events were observed. The exceptionally low complication incidence across all groups precluded definitive statistical non-inferiority conclusions, indicating that standardized nursing competency and strict technique, rather than locking solution alone, drive catheter safety.
Why this matters for nurses
Oncology and infusion nurses access and de-access implanted venous ports constantly throughout chemotherapy regimens. Omitting heparin locks would simplify nursing workflow, avoid heparin-induced thrombocytopenia risks, and cut medication costs; however, this trial underscores that protocol adherence, pulsatile flushing technique, and positive pressure de-access by trained nurses maintain high patency and low infection rates regardless of flush volume.
Bedside takeaway
In a 192-patient oncology trial of totally implantable ports managed by trained nurses, complications were rare across 10 mL saline, 20 mL saline, and heparin groups (1 occlusion, 0 CRBSIs, 3 minor bleeds).
Key takeaways
- Prospective 3-arm exploratory RCT randomized 192 adult oncology patients with implantable ports to 10 mL saline, 20 mL saline, or heparin lock.
- Complication rates were uniformly low under a structured, nurse-led catheter management protocol.
- Only one catheter occlusion occurred across all 192 patients (10 mL saline arm), with zero occlusions in the 20 mL saline and heparin groups.
- No catheter-related bloodstream infections (CRBSIs) or severe device adverse events occurred in any study arm.
- Authors emphasized that standardized nursing care protocols and strict adherence are paramount, while larger trials are needed before omitting heparin.
Practice implications
- Adhere strictly to standardized, aseptic catheter access protocols; use vigorous pulsatile flushing and positive-pressure clamp sequences; do not abandon institutional heparin locking protocols until supported by definitive phase 3 non-inferiority data.
Limitations & cautions
- Single-center exploratory design; low event rates precluded statistically powered comparative non-inferiority inferences between saline volumes and heparin locks.
- AI-summarized from the linked source. Review the original article before applying to practice.
Citations
Exact source links
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Nursing open (PubMed)
Nursing open (PubMed). Flushing Strategies for Totally Implantable Venous Access Devices in Nurse-Led Cancer Care: Exploratory Randomized Clinical Trial.
https://pubmed.ncbi.nlm.nih.gov/42888507/
Professional education only


