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Table 2 The baseline characteristics of all patients enrolled in the final skills tests

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 (N = 51) TU-G (N = 50) P value
Age(year) 65.18 ± 9.63 64.28 ± 11.38 0.670
Weight(kg) 66.43 ± 13.73 68.77 ± 9.47 0.319
Height(cm) 168.69 ± 7.92 167.95 ± 8.61 0.636
ASA grade (I/II/III) 0/37/14 0/39/11 0.526
Gender    0.482
  Male 25 28  
  Female 26 22  
Heart rate (beats/min) 69.61 ± 7.61 67.20 ± 8.35 0.133
Noninvasive systolic blood pressure (mmHg) 129.53 ± 20.08 130.26 ± 17.55 0.632
Noninvasive diastolic blood pressure (mmHg) 74.22 ± 13.49 77.24 ± 12.41 0.362
Depth from skin to radial artery center (mm) 3.96 ± 1.25 4.37 ± 0.92 0.065
Transverse diameter (mm) 2.49 ± 0.56 2.65 ± 0.59 0.155
Longitudinal diameter (mm) 2.20 ± 0.47 2.17 ± 0.41 0.788
  1. Values are mean ± SD or number
  2. Heart rate, noninvasive systolic and diastolic blood pressures were measured before radial arterial puncture and cannulation
  3. All radial artery diameters are measured at 1.5 cm-2.5 cm on the transverse stripes of the wrist. The measurement is performed during the systolic period in three different cardiac cycles, and the average value is finally taken