Ultrasound-guided radial artery catheterisation increases the success rate among anaesthesiology residents: a randomised study.

Introduction: The palpation technique is generally used for radial artery catheterisation, but is associated with a high rate of failure and complications. Dynamic needle tip positioning (DNTP) is a new ultrasound-guided technique. We aimed to compare the traditional palpation technique with DNTP performed by four anaesthesiology residents.

Guidance markers increase the accuracy of simulated ultrasound-guided vascular access: an observational cohort study in a phantom.

Introduction: Peripheral ultrasound (US)-guided vascular access is gaining popularity. Though studies have demonstrated that US-guided vascular access has several advantages, the procedure is challenging to even the most experienced operator. The aim of this observational cohort study was to investigate whether adding guidance markers on a US system would increase the accuracy of US-guided needle tip placement compared to no guidance markers.

A technique for ultrasound-guided blood sampling from a dry and gel-free puncture area.

Purpose: Vein punctures are performed daily to sample blood. Ultrasound (US) offers an alternative to the blind landmark technique for difficult vascular access. A challenge for this procedure is the presence of US gel in the puncture area.