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Table 3 Comparison of success rate of cannula insertion at first attempt, failure rate, localization time, and puncture time between the two groups

From: The application of the acoustic shadowing facilitates guidance in radial artery puncture and cannulation teaching in standardized training for residents: a randomized controlled trial

Parameter ASFU-G TU-G Odds Ratio(95%CI) P value
First-attempt puncture success rate 40 (78.43%) 29 (58.00%) 0.380 (0.159–0.908) 0.027
First-attempt catheterization success rate 38 (74.51%) 26 (52.00%) 0.371 (0.160–0.858) 0.019
Ultrasound localization time (s) 14.36 ± 3.31 18.02 ± 4.95 Not applicable  < 0.001
Catheterization time time(s) 10.43 ± 2.38 14.78 ± 8.02 Not applicable 0.012
The incidence of local hematoma 8 (15.69%) 12 (24.00%) 0.589 (0.218–1.594) 0.295
  1. CI Confidence interval
  2. Values are mean ± SD or number (proportion)