Risk factors for deep vein thrombosis during peripherally inserted central catheter-related infections: A retrospective study

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BACKGROUND: Peripherally inserted central catheters (PICCs) are associated with complications including deep vein thrombosis (DVT) and infections. However, the risk factors for developing DVT specifically during PICC-related infections remain poorly understood. METHODS: We conducted a retrospective observational study in a tertiary-care hospital in Reunion Island, examining adult patients with PICC-related infections between January 2021 and March 2022. Venous Doppler ultrasound results, microbiological data, and clinical variables were analyzed. Univariate analysis was performed to identify factors associated with PICC-related DVT. RESULTS: Among 63 patients with PICC-related infections, 40 underwent Doppler ultrasound examinations, with 12 (19 %) diagnosed with PICC-DVT. Infections with Staphylococcus aureus (P = 0.05) and local signs (P = 0.04) were significantly associated with PICC-DVT. Enterobacterales were the predominant pathogens (42.5 %). The incidence rate of PICC-DVT was 5.0/1000 catheter-days in patients with PICC-related infections. CONCLUSIONS: Staphylococcus aureus infection and local signs are associated with PICC-DVT. Our findings suggest that these factors should be considered when managing patients with PICC-related infections. Prospective studies are needed to develop clinical prediction tools to identify which patients would benefit most from Doppler ultrasound.

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