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Table 5 The secondary outcomes in the ultrasound-assisted group versus conventional puncture group

From: A randomized controlled trial of ultrasound-assisted technique versus conventional puncture method for saphenous venous cannulations in children with congenital heart disease

 

ultrasound-assisted group

conventional puncture group

P-value

The overall proportion of success rate(n), %

65(90.3%)

56(77.8%)

0.080

Rate difference, %(95% CI)

12.5(0.7, 24.3)

 

The overall time to cannulation(s)

45.5(36, 96.25)

94.0(56, 171)

0.00

The time to cannulation at the first attempt(s)

41.0(35, 53.75)

60(45, 83)

0.00

Overall puncture numbers

1(1, 2)

2(1, 3)

0.002

Overall numbers of needle redirections

3(1, 7)

7(3, 13)

0.001

Needle redirections at the first attempt

2(1, 5)

3(2, 6)

0.027

The width of saphenous veins (mm)

1.485 + 0.318

1.543 + 0.396

0.375

The depth of saphenous veins (mm)

3.622 + 1.408

3.605 + 1.421

0.949

Complication (n), %

3(4.27%)

2(2.78%)

0.999