Document Classification

Section Type: RESULTS

Text: Significant differences were shown in the USG versus no-USG groups in number of needle advances until successful cannulation of the vein : mean with USG = 1. 5 advances (95 % CI, 1. 0-1. 9), mean without USG = 10. 4 advances (95 % CI, 7. 8-13), P < 0. 001 ; time to successful cannulation : mean with USG = 58 seconds (95 % CI, 48-72 seconds), mean without USG = 338 seconds (95 % CI, 286-390 seconds), P < 0. 001 ; and success rates : 100 % with USG and 42. 8 % without USG (95 % CI, 24. 5 % -61. 1 %).