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[Thrombosis and obstruction associated with central venous lines. Incidence and risk factors]
A Vivanco Allende1, C Rey Galán, M V Rodríguez de la Rúa
1Sección de Cuidados Intensivos Pediátricos, Área de Gestión Clínica de Pediatría, Hospital Universitario Central de Asturias, Universidad de Oviedo, Oviedo, Asturias, España. anaviall@hotmail.com
Insights
Central venous lines (CVL) in critically ill children frequently cause obstruction and thrombosis. Longer CVL duration is a key risk factor for obstruction, highlighting the need for careful monitoring in pediatric intensive care units.
Area of Science:
- Pediatric critical care medicine
- Vascular access devices
- Clinical epidemiology
Context:
- Central venous lines (CVL) are essential for managing critically ill children.
- Complications like thrombosis and obstruction can impede CVL function and patient care.
- Understanding risk factors is crucial for optimizing CVL use in pediatric intensive care units (PICUs).
Purpose:
- To determine the incidence of thrombosis and obstruction in CVLs placed in critically ill children.
- To identify independent risk factors associated with these central venous line complications.
Summary:
- A prospective observational study analyzed 825 CVLs in 546 pediatric patients.
- Obstruction occurred in 4.96% and thrombosis in 1.18% per 100 CVLs.
- CVL duration was the only independent risk factor for obstruction (OR 1.05). Bivariate analysis suggested thrombosis risk with line number and parenteral nutrition.
Impact:
- Obstruction and thrombosis are common CVL complications in PICUs.
- Prolonged CVL dwell time is a significant risk factor for obstruction.
- Findings inform clinical practice to minimize CVL-related complications in pediatric critical care.
Objective:
To analyse the incidence of thrombosis and obstruction associated with central venous lines (CVL) inserted in critically ill children, and to determine their risk factors.
Design:
Prospective observational study in a Pediatric Intensive Care Unit in a University Hospital.
Material And Method:
An analysis was made of 825 CVL placed in 546 patients. Age, gender, weight, type of catheter (lines, size, and brand), final location of the catheter, mechanical ventilation, type of sedation and analgesia used, initial failure by the doctor to perform CVL catheterization, number of attempts, CVL indication, admission diagnosis, emergency or scheduled procedure, and delayed mechanical complications (DMC). Risk factors for these complications were determined by a multiple regression analysis.
Results:
A total of 52 cases of DMC, 42 cases of obstruction, and 10 of thrombosis were registered. Obstruction and thrombosis rates were 4.96 and 1.18 per 100 CVL, respectively. The only risk factor independently linked to obstruction was the duration of the CVL (OR 1.05; 95% CI; 1.00-1.10). The number of lines with thrombosis (OR 4.88; 95% CI; 1.26-18.0), as well as parenteral nutrition (OR 4.17; 95% CI; 1.06-16.31) was statistically significant according to bivariate analysis. However, no risk factors for thrombosis were found in the multivariate analysis.
Conclusions:
Obstruction and thrombosis of CVL inserted in a Pediatric Intensive Care Unit are relatively common complications. CVL duration is an independent risk factor for any line obstruction.
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