Ultrasound-guided arterial catheterization with acoustic shadowing technique: A randomized controlled trial

Area of Science:

• Medical Imaging and Interventional Procedures
• Vascular Access Techniques
• Anesthesiology

Background:

• Ultrasound-guided dynamic needle tip positioning (DNTP) and acoustic shadowing enhance radial artery catheterization success.
• Palpation is less effective than ultrasound-based methods for radial artery access.
• Combining DNTP with acoustic shadowing may further improve outcomes.

Purpose of the Study:

• To evaluate the efficacy of combining DNTP with acoustic shadowing technology (AS-DNTP) for radial artery catheterization.
• To compare AS-DNTP with DNTP alone in terms of procedural efficiency and success rates.
• To assess the impact of AS-DNTP on needle manipulations and localization time.

Main Methods:

• A randomized controlled study involving 152 patients undergoing radial artery catheterization.
• Patients were assigned to either the AS-DNTP group or the DNTP group.
• Primary outcome: needle tip retractions/corrections; Secondary outcomes: first-pass success, attempts, localization time, complications.

Main Results:

• The AS-DNTP group showed significantly fewer needle retractions/corrections (2.22 vs 2.84, p=0.001).
• First-pass success rate was higher in the AS-DNTP group (96.10% vs 86.67%, p=0.038).
• AS-DNTP resulted in fewer attempts (1.04 vs 1.13, p=0.038) and shorter localization time (6.78s vs 7.57s, p=0.045).

Conclusions:

• AS-DNTP technology reduces needle manipulations during radial artery catheterization.
• This combined technique increases first-pass success rates.
• AS-DNTP shortens ultrasound localization time, improving procedural efficiency.