• Pediatr Crit Care Me · Jun 2013

    Randomized Controlled Trial Comparative Study

    Ultrasound-guided radial artery catheterization in infants and small children.

    • Masayuki Shibasaki, Teiji Sawa, and Sachiyo Ishii.
    • Department of Anesthesiology and Intensive Care Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan.
    • Pediatr Crit Care Me. 2013 Jun 1;14(5):471-3.

    ObjectiveTo determine whether ultrasound guidance increases the success rates, decreases the complication rates, and shortens the time to successful radial artery catheterization in infants and small children.DesignRandomized study.SettingSingle university-affiliated hospital.PatientsInfants and children weighing 3-20 kg, undergoing cardiac surgery for congenital heart disease.InterventionWe randomly assigned the right and left radial arteries of patients undergoing arterial catheterization to ultrasound-guided technique versus the usual palpation technique.MeasurementsThe primary study endpoints were the rates of successful cannulation at first and within three attempts. The secondary endpoints were time to radial artery identification, number of attempts for successful cannulation, and rate of complications.Main ResultsCompared with palpation, ultrasound-guided radial artery catheterization was successful in 76.3% versus 35.6% of first attempts and in 94.9% versus 50.8% of arteries after three attempts (both comparisons, p < 0.01). The median time [interquartile range] to identification of the arteries (18.5 seconds [11.25-27.25] vs 30 seconds [17.75-39.5]) was significantly shorter (p < 0.01), the number of attempts [interquartile range] at successful cannulation (1 [1-1] vs 2 [1-2]) was significantly fewer (p < 0.01), and the proportion of hematomas (5.1% vs 25.4%) was significantly lower (p < 0.01) in the ultrasound group than those in the palpation group.ConclusionsIn infants and small children, ultrasound-guided radial artery catheterization was more successful and expeditious than the usual palpation technique.

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