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"There is clear guidance for indications and maintenance of central venous catheters, but there is no clear guidance on how long a central venous catheter should remain in situ" Morzaria and Carle (2021).

Routine CVC replacement

Abstract:

Central venous catheters are sited for a variety of reasons in the adult critically ill patient. There is clear guidance for indications and maintenance of central venous catheters, but there is no clear guidance on how long a central venous catheter should remain in situ. This article looks at evidence to answer this question.

Reference:

Morzaria P, Carle C. Should central venous catheters be routinely replaced in adults? Br J Hosp Med (Lond). 2021 Jul 2;82(7):1-2. doi: 10.12968/hmed.2020.0711. Epub 2021 Jul 20. PMID: 34338017.