Document Classification

Section Type: RESULTS

Text: The ultrasonographic group required less overall time (13 minutes versus 30 minutes, for a difference of 17 [95 % CI 0. 8 to 25. 6]), less time to successful cannulation from first percutaneous puncture (4 minutes versus 15 minutes, for a difference of 11 [95 % CI 8. 2 to 19. 4]), and fewer percutaneous punctures (1. 7 versus 3. 7, for a difference of 2. 0 [95 % CI 1. 27 to 2. 82]) and had greater patient satisfaction (8. 7 versus 5. 7, for a difference of 3. 0 [95 % CI 1. 82 to 4. 29]) than the traditional landmark approach.