We thank Lyu et al.1  for their interest and their comments on our research.2  The concerns you raised are indeed among the most critical aspects considered during the research design and experiment process. We will address each point individually:

First, we routinely have sufficient time for prepuncture preparation in our institution, especially for pediatric patients. As detailed in the second paragraph of the “Anesthesia and Preparatory Phase” section of the article, “In the single-operator laser-assisted ultrasound-guidance group, before the patient entered the operating room, the assistant prepared the equipment as follows.”2  The preparation of the ultrasound system had been completed before the patient entered the operating room, which, in fact, did not waste the actual time of positioning and cannulation. To complete the challenging radial artery cannulation in young children less than 2 yr old, we believe that every amount of prepuncture preparation is worthwhile. We will...

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