Review of Ultrasound-Guided Radial Artery Catheter Placement

Radial artery catheters are commonly placed for continuous blood pressure monitoring, frequent arterial blood gas analysis, or frequent blood sampling for diagnostic testing. Radial artery cannulation can be challenging and ultrasound guidance has emerged as a valuable adjunct for the placement of radial artery catheters. The advantages of ultrasound guidance include: real-time visualization of landmarks, improved pre-procedure planning, reduction in complications, less time spent at the bedside, and improved first-attempt success rates. Disadvantages of ultrasound guidance include: equipment cost, equipment availability, limited availability of experts to train providers, and the cost of training providers. Ultrasound machines are readily available and widely utilized in many emergency departments, operating rooms, and ICUs. We will summarize the use of ultrasound guidance for the placement of radial artery catheters and describe the techniques used during ultrasound-guided arterial catheter placement. Training on the use of ultrasound should be encouraged for all practitioners who place radial artery catheters.

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