Table 2 Outcome measurements by the use of ultrasound as compared to the landmark technique
Ultrasound (n = 60) | Landmark (n=60) | p | |
|---|---|---|---|
Dangerous underlying structure | 1/60 (1.7%) | 9/60 (15%) | 0.008 |
Time to completion, s | |||
Mean (SD) | 19.9 (10.6) | 10.7 (7.1) | < 0.001 |
Median (range) | 17 (7.8–50) | 9.21 (3.35–45) | |
Correct placement* | 51/60 (85%) | 40/60 (66.7%) | 0.019 |