Long-versus Short-Axis Ultrasound Guidance for Subclavian Vein Cannulation

Status Completed

Clinical Trial Summary

Central venous catheterization is commonly applied in patients undergoing cardiac surgery. The subclavian vein has lower risk of infection and provides more patients comfort. However central venous catheterization may results in complications such as pneumothorax, hemothorax or arterial puncture. It has been suggested that ultrasound (US) guidance could improve the success rate, reduce the number of needle passes and decrease complications. Two different real-time 2-dimensional US techniques can be employed in the insertion of central venous catheters. The first technique involves real-time US-guided cannulation of subclavian vein using a long axis/in-plane approach. The second one involves real-time US-guided using a short axis/out-off-plane approach. However to date no studies have compared their efficacy and safety. The purpose of this study was to compare the US-guided long-axis versus short-axis approach for the SCV catheterization in adult critical care patients.

Clinical Trial Description

The two techniques used for vessel visualization are far different:

The Short-Axis (SA) approach attempts to view the vessel in cross-section while venous access is obtained. The strength of the SA approach is that the vein is centered under the transducer and that the midpoint of the transducer becomes a reference point for the insertion of the needle, and that at the same time is possible to visualize SC artery and the pleural line. SA approach is easy to learn by novice sonologists.

The Long-Axis (LA) approach employs a technique that views the length of the vessel during cannulation.For this reason, with LA approach is possible to visualize the needle advance during the entire procedure from the soft tissues until the lumen of the vein, but SC artery and pleural line are not visualized in the same scan. For LA approach, practice is required to keep the needle precisely within the image and care must be taken to avoid the probe inadvertently moving away from the target structure. ;

Study Design

Related Conditions & MeSH terms

Perioperative/Postoperative Complications
Postoperative Complications
Vascular Access Complication

Clinical Trial Details

NCT number	NCT01927185
Study type	Interventional
Source	Azienda Ospedaliero-Universitaria di Parma
Contact
Status	Completed
Phase	N/A
Start date	June 2013
Completion date	March 2016

View Details

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.