Key result
Ultrasound-guided radial artery cannulation increased the rate of success at the first attempt by 14% (95% CI 5-22%; p=0.002) compared to Doppler or palpation.
Why the study?
Does ultrasound guidance improve the rate of successful first-attempt radial artery cannulation by anaesthetic trainees compared to Doppler or palpation?
RCT (n=749)
randomly allocated
Does ultrasound guidance improve the rate of successful first-attempt radial artery cannulation by anaesthetic trainees compared to Doppler or palpation?
Absolute Risk Reduction: 14 (95% CI 5–22)
Absolute Event Rate: 53% vs 39%
Absolute Risk Reduction: 14%
p-value: p=0.002
Ultrasound guidance significantly improves first-attempt success for radial artery cannulation by anesthetic trainees compared to traditional palpation or Doppler methods.
Supports routine ultrasound use for radial cannulation by trainees; confirms superiority over palpation or Doppler in RCT.
We randomly allocated 749 participants to radial artery cannulation by anaesthetic trainees, guided by Doppler (244), palpation (256) or ultrasound (249). Ultrasound increased the rate of cannulation at the first attempt by 14% (95% CI 5-22%), from 39% with Doppler or palpation, p = 0.002 for both. There were no differences in the rates of cannulation 5 min after the procedure started: 147/244 (60%) with Doppler; 160/256 (63%) with palpation; and 171/249 (69%) with ultrasound, p = 0.13.
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Ueda et al. (2015) conducted an RCT in radial artery cannulation (n=749). Ultrasound guidance vs. Doppler or palpation was evaluated on rate of cannulation at the first attempt (14% absolute increase, 95% CI 5-22, p=0.002). Ultrasound-guided radial artery cannulation increased the rate of success at the first attempt by 14% (95% CI 5-22%; p=0.002) compared to Doppler or palpation.
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