Impact of Tubing Colonization on the Incidence of Central Venous Catheter Infection

Plain-language summary

The objective of this study is to assess the relationship between infusion system colonization (ramps or multi-lumen devices) and the occurrence of CVC infection/colonization. This study is a prospective observational research that does not modify usual patient care. Its objective is to evaluate the relationship between infusion tubing colonization and the occurrence of central venous catheter colonization. The only additional intervention is swabbing the taps at each IV line ramp at systematic ramp changes (done every 4 days) and at catheter removal. For the multi-lumen device, swabbing is only performed upon catheter removal at the level of the one-way valves. After catheter removal, a flush (1 mL of 0.9% NaCl) of the midline is performed and cultured to assess for endoluminal colonization. The distal end of the CVC is sent for culture, following the usual practice of the department to monitor catheter colonization and infections. The primary outcome measure is the proportion of colonized infusion systems based on the culture of the CVC. The secondary objectives are to describe factors associated with CVC infections, to determine the incidence of colonization and infections in different locations of central venous catheters, to analyze the bacterial ecology based on the type of infusion system used, and to evaluate the ecological and economic impact of different devices (ramps vs. multi-lumen devices). The secondary outcome measures are as follows: Proportion of colonized infusion systems based on the colonization status of the CVC and the type of infusion system (ramps vs. multi-lumen devices) Proportion of colonized infusion systems based on the infection status of the CVC and the type of infusion system (ramps vs. multi-lumen devices) Duration of antibiotic treatment Weight of compounds used with each infusion system over the duration of CVC placement (ramps vs. multi-lumen devices) Calculation of material costs based on the infusion system used over the duration of CVC placement (ramps vs. multi-lumen devices)

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