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Peer-reviewedCC BY-NC 4.0Diagnostic and Interventional Radiology

Pleural and intra-abdominal long-term drainage: comparison of a novel double-loop and a conventional single-loop catheter

  • Su Ho Kim1
  • Jung Suk Oh1
  • Ho Jong Chun1
  1. 1Seoul St. Mary’s Hospital College of Medicine, The Catholic University of Korea, Department of Radiology, Seoul, South Korea
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Abstract

PURPOSE: To evaluate the efficacy and advantages of a novel double-loop drainage catheter (nDLC) compared with a conventional single-loop catheter (cSLC) in overcoming dysfunctional retraction for pleural and intra-abdominal drainage.

METHODS: A retrospective review of 356 patients who underwent drainage procedures between January and October 2023 was conducted. Of these, 221 received cSLC and 135 received nDLC, all using 8-F catheters. Complicated collections (e.g., empyema, pneumothorax, bile, pancreatic secretions, bloody collection, urine, or air) were excluded. The complication-free catheter indwelling time was analyzed using the Kaplan–Meier method. Patient characteristics and complications were compared using paired t-tests and Fisher’s exact tests.

RESULTS: The nDLC group demonstrated a significantly longer mean complication-free catheter indwelling time [70.3 days, 95% confidence interval (CI): 52.8–87.9] than the cSLC group (19.6 days, 95% CI: 17.9–21.2; P < 0.05). Subgroup analysis showed superior indwelling times with nDLC for both intra-abdominal (77.5 vs. 18.7 days) and pleural drainage (35.9 vs. 19.7 days) (P < 0.05). Dysfunctional retraction occurred in 10 cases in the cSLC group but in no cases in the nDLC group (P < 0.001).

CONCLUSION: The nDLC significantly reduces dysfunctional retraction and provides a longer complication-free catheter indwelling time than the cSLC for both pleural and intra-abdominal drainage.

CLINICAL SIGNIFICANCE: The nDLC design effectively prevents catheter retraction and eliminates the need for suture anchoring, potentially reducing suture-related complications and improving long-term catheter performance in patients requiring prolonged pleural or intra-abdominal drainage.

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Cite

BibTeXRIS
BibTeX
@article{kim2026pleural,
  title = {{Pleural and intra-abdominal long-term drainage: comparison of a novel double-loop and a conventional single-loop catheter}},
  author = {Su Ho Kim and Jung Suk Oh and Ho Jong Chun},
  journal = {Diagnostic and Interventional Radiology},
  year = {2026},
  month = nov,
  doi = {10.4274/dir.2026.263808},
  url = {https://doi.org/10.4274/dir.2026.263808},
  note = {CC BY-NC 4.0},
}
RIS
TY  - JOUR
TI  - Pleural and intra-abdominal long-term drainage: comparison of a novel double-loop and a conventional single-loop catheter
AU  - Su Ho Kim
AU  - Jung Suk Oh
AU  - Ho Jong Chun
PY  - 2026
DA  - 2026/11/02
JO  - Diagnostic and Interventional Radiology
DO  - 10.4274/dir.2026.263808
UR  - https://doi.org/10.4274/dir.2026.263808
AB  - PURPOSE: To evaluate the efficacy and advantages of a novel double-loop drainage catheter (nDLC) compared with a conventional single-loop catheter (cSLC) in overcoming dysfunctional retraction for pleural and intra-abdominal drainage.  METHODS: A retrospective review of 356 patients who underwent drainage procedures between January and October 2023 was conducted. Of these, 221 received cSLC and 135 received nDLC, all using 8-F catheters. Complicated collections (e.g., empyema, pneumothorax, bile, pancreatic secretions, bloody collection, urine, or air) were excluded. The complication-free catheter indwelling time was analyzed using the Kaplan–Meier method. Patient characteristics and complications were compared using paired t-tests and Fisher’s exact tests.  RESULTS: The nDLC group demonstrated a significantly longer mean complication-free catheter indwelling time [70.3 days, 95% confidence interval (CI): 52.8–87.9] than the cSLC group (19.6 days, 95% CI: 17.9–21.2; P < 0.05). Subgroup analysis showed superior indwelling times with nDLC for both intra-abdominal (77.5 vs. 18.7 days) and pleural drainage (35.9 vs. 19.7 days) (P < 0.05). Dysfunctional retraction occurred in 10 cases in the cSLC group but in no cases in the nDLC group (P < 0.001).  CONCLUSION: The nDLC significantly reduces dysfunctional retraction and provides a longer complication-free catheter indwelling time than the cSLC for both pleural and intra-abdominal drainage.  CLINICAL SIGNIFICANCE: The nDLC design effectively prevents catheter retraction and eliminates the need for suture anchoring, potentially reducing suture-related complications and improving long-term catheter performance in patients requiring prolonged pleural or intra-abdominal drainage.
SN  - 1305-3825
SN  - 1305-3612
ER  -