[Radial] B‐mode ultrasound guidance may leads to higher first‐attempt success rate compared with palpation and landmarks (low certainty).
The review found no eligible studies for this question.
It is very uncertain whether [Dorsalis pedis] B‐mode ultrasound guidance changes first‐attempt success rate compared with palpation and landmarks (very low certainty).
It is very uncertain whether [Radial] B‐mode ultrasound changes first‐attempt success rate compared with near‐infrared laser guidance (very low certainty).
[Radial] B‐mode ultrasound may leads to lower first‐attempt success rate compared with modified B‐mode ultrasound (low certainty).
It is very uncertain whether [Radial] In‐plane B‐mode ultrasound changes first‐attempt success rate compared with out‐of‐plane B‐mode ultrasound (very low certainty).
It is very uncertain whether [Radial] Dynamic out‐of‐plane B‐mode ultrasound changes first‐attempt success rate compared with static out‐of‐plane B‐mode ultrasound (very low certainty).
It is very uncertain whether [Radial] Oblique‐axis in‐plane B‐mode ultrasound changes first‐attempt success rate compared with long‐axis in‐plane B‐mode ultrasound (very low certainty).
[Radial] B‐mode ultrasound probably leads to higher first‐attempt success rate compared with doppler assistance (moderate certainty).
[Radial] Doppler assistance showed no clear difference in first‐attempt success rate compared with palpation and landmarks (low certainty).