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Invasive Blood Pressure Monitoring Using Ultrasound-guided Artery Cannulation Through the Distal Radial Artery
Weijuan Zhu1, Ruoxing Chen1, Xiaoxiao Cheng2
1Department of Anesthesiology, the First Affiliated Hospital, Wenzhou Medical University, Zhejiang, China.
Journal of Cardiothoracic and Vascular Anesthesia
|April 24, 2026
Summary
Ultrasound-guided radial artery cannulation in the anatomical snuffbox is a viable alternative for invasive blood pressure monitoring, showing comparable success rates to traditional methods. This distal transradial access offers a promising approach for critically ill patients.
Area of Science:
- Vascular Access
- Critical Care Medicine
- Ultrasound Guidance
Background:
- Invasive blood pressure monitoring is crucial for managing critically ill patients.
- Conventional radial and dorsalis pedis artery access sites have limitations.
- Distal transradial access is emerging as a less complicated and more comfortable alternative.
Purpose of the Study:
- To assess the feasibility of ultrasound-guided radial artery cannulation in the anatomical snuffbox.
- To compare this novel approach with conventional radial and dorsalis pedis artery cannulation.
Main Methods:
- A randomized controlled study involving 120 patients.
- Patients were randomized into three groups: anatomical snuffbox (Group A), radial artery (Group B), and dorsalis pedis artery (Group C).
- Coprimary outcomes included first-attempt success rate and puncture duration.
Main Results:
- First-attempt success rates were comparable across all groups (Group A: 75%, Group B: 72.5%, Group C: 52.5%).
- Puncture duration was significantly shorter in the conventional radial artery group (Group B) compared to both the anatomical snuffbox (Group A) and dorsalis pedis artery (Group C) groups.
- The anatomical snuffbox approach demonstrated comparable success rates to conventional methods.
Conclusions:
- Ultrasound-guided radial artery cannulation in the anatomical snuffbox is a clinically feasible option.
- This technique offers a viable alternative for invasive hemodynamic monitoring.
- It presents comparable success rates to traditional radial and dorsalis pedis artery cannulation.
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