Long-versus Short-Axis Ultrasound Guidance for Subclavian Vein Cannulation
Study Details
Study Description
Brief 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.
| Condition or Disease | Intervention/Treatment | Phase |
|---|---|---|
|
N/A |
Detailed 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
Arms and Interventions
| Arm | Intervention/Treatment |
|---|---|
| Active Comparator: Long Axis strategy The central venous catheterization will be performed by the long axis approach |
Device: Long Axis strategy
With the long-axis approach the vein appeared in the longitudinal view. With this approach only the vein was visible on the screen. The needle was held at a 30° angle, oriented in-plane with the transducer and the skin punctured at the base of the transducer. The vessel alignment was maintained during the procedure and the entire length of the needle was visible during the progression through the tissues.
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| Active Comparator: Short Axis Strategy The central venous catheterization will be performed by the short axis approach |
Device: Short Axis Strategy
With the short-axis approach the probe was positioned almost perpendicularly to the clavicle. The needle was held at an angle of 45° relative to the skin surface and sagittal to the plane of the probe (out-of-plane). During the progression to the vessel, the visualization of the needle was limited to the deformation of tissue and artefacts produced by needle advancement. When the tip abutted the vein wall, additional pressure produced transient vessel deformation, which disappeared once the wall was penetrated.
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Outcome Measures
Primary Outcome Measures
- Success rate [up to 4 hours]
Secondary Outcome Measures
- Access Time [Hours: 0,1]
- Central line-associated blood stream infection [days 0-21]
- Number of attempts [hours: 0-2]
Overall number of skin penetration and number of withdraws and redirections of the needle
- Complication rate [Hours: 0-6-12-24]
Pneumothorax, Haemothorax, Hydrothorax, Artery puncture, Hematoma, Malpositions
Eligibility Criteria
Criteria
Inclusion Criteria:
-
aged =>18 years
-
patients who needed central venous catheter for clinical reasons
Exclusion Criteria:
- aged <18a years
Contacts and Locations
Locations
| Site | City | State | Country | Postal Code | |
|---|---|---|---|---|---|
| 1 | Cardiac Surgery. Azienda Ospedaliero Universitaria di Parma | Parma | Italy | 43126 |
Sponsors and Collaborators
- Azienda Ospedaliero-Universitaria di Parma
Investigators
- Study Director: Antonella Vezzani, MD, Cardiac Surgery. Azienda Ospedaliero Universitaria di Parma
- Study Chair: Tiziano Gherli, MD, Cardiac Surgery. Azienda Ospedaliero Universitaria di Parma
- Principal Investigator: Tullio Manca, MD, Cardiac Surgery. Azienda Ospedaliero Universitaria di Parma
Study Documents (Full-Text)
None provided.More Information
Publications
- Abboud PA, Kendall JL. Ultrasound guidance for vascular access. Emerg Med Clin North Am. 2004 Aug;22(3):749-73. Review.
- Blaivas M, Adhikari S. An unseen danger: frequency of posterior vessel wall penetration by needles during attempts to place internal jugular vein central catheters using ultrasound guidance. Crit Care Med. 2009 Aug;37(8):2345-9; quiz 2359. doi: 10.1097/CCM.0b013e3181a067d4.
- Blaivas M, Brannam L, Fernandez E. Short-axis versus long-axis approaches for teaching ultrasound-guided vascular access on a new inanimate model. Acad Emerg Med. 2003 Dec;10(12):1307-11.
- Fragou M, Gravvanis A, Dimitriou V, Papalois A, Kouraklis G, Karabinis A, Saranteas T, Poularas J, Papanikolaou J, Davlouros P, Labropoulos N, Karakitsos D. Real-time ultrasound-guided subclavian vein cannulation versus the landmark method in critical care patients: a prospective randomized study. Crit Care Med. 2011 Jul;39(7):1607-12. doi: 10.1097/CCM.0b013e318218a1ae.
- Matalon TA, Silver B. US guidance of interventional procedures. Radiology. 1990 Jan;174(1):43-7.
- Shah A, Smith A, Panchatsharam S. Ultrasound-guided subclavian venous catheterisation - is this the way forward? A narrative review. Int J Clin Pract. 2013 Aug;67(8):726-32. doi: 10.1111/ijcp.12146. Review.
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