Bottom line: There is not much published evidence addressing this question.
Summary:
Joanna Briggs: Peripherally Inserted Central Catheters: Occlusion
Reviews evidence associated with risk associated with misplacement or movement of the catheter tip and location of insertion site. I checked the references cited, but did not find any discussion of modifying or trimming the catheter.
PubMed:
peripherally inserted catheter AND thrombosis AND (trimmed OR trimming OR modif* OR cutting)
Evidence that specifically discusses trimming includes
Parvez. Thrombosis Research (2004) 113, 175—177: A comparison of changes in surface of catheter at site of trimming. Authors hypothesize that roughness introduced by trimming line can contribute to thrombosis.
EMBASE:
To view search click on the EMBASE link and then copy this search statement into the search box:
‘peripherally inserted central catheter’ AND thrombosis AND (trimming OR trimmed OR modif*)
Additional evidence that specifically discusses trimming includes:
Trimming of peripherally inserted central catheters: The end result
Pettit J. JAVA – Journal of the Association for Vascular Access 2006 11:4 (209-214)
This paper references a study showing how trimming affects the catheter tip. Possibly this reference is to the Parvez article from the PubMed results above. We do not have access to this Pettit paper, but you can request through interlibrary loan link in the Find It @ Emory menu for this article
Other papers in both the PubMed and EMBASE searches seem to mention trimming or cutting the catheter, but only as part of the procedures and not as a risk factor.
SEARCH METHODS
Resources searched:
Evidence summary resources: Joanna Briggs JBI+Connect
Large literature databases: PubMed, EMBASE
Search included combinations of these terms:
Peripherally inserted central catheter, catheter
trimming, trimmed, modif* (for modify, modified, modification, etc.)
thrombosis