• Thrombosis research · Aug 2014

    Risk factors for hospital-sssociated venous thromboembolism in the neonatal intensive care unit.

    • Ernest K Amankwah, Christie M Atchison, Shilpa Arlikar, Irmel Ayala, Laurie Barrett, Brian R Branchford, Michael Streiff, Clifford Takemoto, and Neil A Goldenberg.
    • Clinical and Translational Research Organization, All Children's Research Institute, All Children's Hospital Johns Hopkins Medicine, St. Petersburg, FL, USA.
    • Thromb. Res. 2014 Aug 1; 134 (2): 305-9.

    ObjectiveTo determine hospital-associated venous thromboembolism (HA-VTE) risk factors in critically ill neonates.MethodsWe conducted a case-control study in the neonatal intensive care unit (NICU) of All Children's Hospital Johns Hopkins Medicine (St. Petersburg, FL), from January 1, 2006 - April 10, 2013. We identified HA-VTE cases using electronic health record. Four NICU controls were randomly selected for each HA-VTE case. Associations between putative risk factors and HA-VTE were estimated using odds ratios (ORs) and ninety-five percent confidence intervals (95%CIs) from univariate and multivariate regression analyses.ResultsTwenty-three HA-VTE cases and 92 controls were included. The annual HA-VTE incidence was approximately 1.4 HA-VTE cases per 1,000 NICU admissions. In univariate analyses, mechanical ventilation (OR=7.27, 95%CI=2.02-26.17, P=0.002), central venous catheter (CVC; OR=52.95, 95%CI=6.80-412.71, P<0.001), infection (OR=7.24, 95%CI=2.66-19.72, P<0.001), major surgery (OR=5.60, 95%CI=1.82-17.22, P=0.003) and length of stay ≥15days (OR=6.67, 95%CI=1.85-23.99, P=0.004) were associated with HA-VTE. Only CVC (OR=29.04, 95%CI=3.18-265.26, P=0.003) remained an independent risk factor in the multivariate analysis. Based on this result, the estimated risk of HA-VTE in NICU patients with a CVC was 0.9%.ConclusionThis study identifies CVC as an independent risk factor for HA-VTE in critically ill neonates. However, the level of risk associated with CVC is below the conventional threshold for primary anticoagulation thromboprophylaxis. Larger studies are needed to substantiate these findings and identify novel putative risk factors to further distinguish NICU patients at highest HA-VTE risk.Copyright © 2014 Elsevier Ltd. All rights reserved.

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