Ultrasound‑guided puncture is now recommended as the default approach when escalating from peripheral to central vascular access, because it improves first‑pass success and reduces complications such as arterial puncture, pneumothorax, and hematoma.
Why ultrasound before central access
- Anatomical landmarks are unreliable: individual variation and pathology (obesity, prior lines, thrombosis) make “classic” surface landmarks poor predictors of vessel position.
- Evidence shows fewer complications: real‑time ultrasound guidance reduces arterial puncture, hematoma, and failed attempts compared with landmark techniques for internal jugular, femoral, and subclavian access.
- Professional guidance: national and specialty societies recommend routine ultrasound guidance for central venous catheterization whenever feasible.
Practical sequence before escalating
When peripheral IVs are failing and you are considering a central line:
- Reassess the indication and confirm that central access is truly needed, in some cases, well‑placed ultrasound‑guided peripheral or midline access may be sufficient.
- Perform ultrasound survey at potential sites (IJ, subclavian/axillary, femoral):
- Identify vein vs artery, check compressibility, patency, and presence of thrombus or stenosis.
- Choose the site with the safest course (vein lateral rather than directly anterior to artery, adequate size, superficial depth).
- Mark or use real‑time guidance:
- Indirect: pre‑scan, mark skin and estimate depth/angle, then puncture using landmarks informed by ultrasound (less preferred).
- Direct: visualize the needle in real time (short‑axis out‑of‑plane or long‑axis in‑plane) and advance under continuous view until venous entry.
An example is ultrasound‑guided right internal jugular cannulation: pre‑scan with a linear probe, confirm the vein is compressible and lateral to the carotid, then cannulate in a sterile fashion with the needle tip kept visible as it enters the vein, followed by wire confirmation and catheter placement.
Technical tips to optimize puncture
- Use a high‑frequency linear probe for IJ, subclavian/axillary, and femoral veins; ensure adequate gel and optimize depth and gain to clearly see vessel walls and needle.
- For short‑axis (out‑of‑plane) puncture, repeatedly “walk” the probe to keep the needle tip in view, avoiding mistaking the shaft for the tip.
- Long‑axis (in‑plane) puncture improves continuous visualization of the needle but can be technically harder; some operators prefer it to minimize posterior wall puncture.
- Micropuncture kits and shallow needle angles can further decrease bleeding and arterial injury.
Site selection considerations before escalation
- Internal jugular vein: often first choice; ultrasound guidance significantly reduces carotid puncture and pneumothorax risk.
- Femoral vein: useful in emergencies, but the artery often overlies the vein below the inguinal ligament; ultrasound ensures puncture of the common femoral vein at the optimal level, avoiding bifurcation and diseased segments.
- Subclavian/axillary vein: traditionally landmark‑based, but ultrasound‑guided supraclavicular or infraclavicular approaches are safe and effective and can avoid pneumothorax and arterial injury.
When to reconsider central access
Even with good ultrasound technique, step back if:
- Peripheral or midline ultrasound‑guided access will meet resuscitation/infusion needs.
- Severe coagulopathy, distorted anatomy, or extensive thrombosis makes central access unusually high risk; consider alternative sites, correction of coagulopathy, or specialist input.
In summary, before escalating to central access, an ultrasound guided puncture strategy using pre scan mapping plus real time needle visualization at the safest site should be standard practice to maximize success and minimize complications.
Explore our range of vascular access solutions. Our portfolio allows clinicians to choose the appropriate device for the level of care required. Please contact us today for more information about our products and for a custom quotation.
Health Line International Corp. is not responsible for any errors, omissions, injury, loss, or damage arising from or relating to the use (or misuse) of any information, statements, or conclusions contained in or implied by the contents of this document or any of the source materials. This content is not intended to replace professional medical advice.
Nickel, B. et al., (2024, January/ February) Infusion Therapy Standards of Practice 9th edition. Journal of Infusion Nursing. https://www.ins1.org/publications/infusion-therapy-standards-of-practice/
Dietrich, C. et al., (2016, September 8) Ultrasound-guided central vascular interventions, comments on the European Federation of Societies for Ultrasound in Medicine and Biology guidelines on interventional ultrasound. National Library of Medicine. https://pmc.ncbi.nlm.nih.gov/articles/PMC5059325/
Miller, A. et al., (2019, April 9) Ultrasound-Guided Subclavian Vein Cannulation: The Vessel to Remember. EM Resident.https://www.emra.org/emresident/article/us-guided-subclavian-access
Joye, J. et al., (2015, January) How I Do It: Ultrasound-Guided Access. Endovascular Today. https://evtoday.com/articles/2015-jan/how-i-do-it-ultrasound-guided-access