Rethinking Central Venous Access

Central venous access is often slower and less emergent than it seems. In critically ill patients who need rapid IV access, intraosseous lines, ultrasound-guided large-bore peripheral IVs, single-lumen internal jugular lines, and midline catheters can often do the job with fewer steps and fewer complications.

Alternatives to Central Lines

• Time to usable access: A standard central line can take 10 to 15 minutes from insertion through confirmation before it is actually usable, which matters when the immediate problem is rapid access rather than multi-lumen monitoring.
• Intraosseous first-line bridge: IO access is fast, works for fluids, antibiotics, pressors, and intubation medications, and is generally a solid 24-hour bridge for the crashing patient.
• Large-bore peripheral strategy: An ultrasound-guided 18-gauge or larger peripheral IV in the antecubital vein or more proximal arm handles most ED resuscitation needs without committing to central access.
• Single-lumen IJ option: A simple IJ uses a large-bore 18-gauge, 2.5-inch catheter for rapid neck access when there is time to cannulate a vein but not place a full central line. We get into the wire-exchange workflow in the episode.
• Midline practical niche: Midline catheters are essentially short PICCs placed into the basilic vein, useful for several days of antibiotics, fluids, blood products, or contrast without central-line confirmation steps.
• When central lines matter: True central-line indications still include vasopressor therapy, emergency access, and high-volume resuscitation, but the decision is narrower than many clinicians assume.

Risks, Flow, and Site Tradeoffs

• Mechanical complication burden: Central lines carry real procedural risk, especially pneumothorax and arterial cannulation, plus patient discomfort and the downstream burden of confirmation before first use.
• Infection site hierarchy: For line-related infection risk, subclavian generally outperforms internal jugular and femoral sites, though that advantage comes with a higher pneumothorax tradeoff.
• ED evidence limitations: Much of the infection literature comes from inpatient settings, and robust ED-specific data on central-line outcomes remain limited, an important caveat for bedside decision-making.
• IO flow rate reality: Tibial and humeral IO access can match the flow of the distal port on a triple-lumen catheter, which reframes IO as more than a last-ditch temporizer.
• IO complication pearls: Major IO complications are uncommon, but compartment syndrome, cortical overpenetration from the wrong needle length, and nearby vascular injury still need active attention. We cover the practical selection nuances on the show.

References

1. Horattas MC, et al. Changing concepts in long-term central venous access: catheter selection and cost savings. Am J Infect Control. 2001;29(1):32-40. PMID: 11172316
2. Flow Rates in IV/IO Access. Rebelem.com. Accessed October 17, 2022. https://rebelem.com/wp-content/uploads/2019/03/Flow-Rates-in-IVIO-Access.png (PMID: 20581377, PMID: 20157465)
3. Adams DZ, et al. The Midline Catheter: A Clinical Review. J Emerg Med. 2016;51(3):252-258. PMID: 27397766
4. Zitek T, et al. Ultrasound-guided Placement of Single-lumen Peripheral Intravenous Catheters in the Internal Jugular Vein. West J Emerg Med. 2018;19(5):808-812. PMID: 30202491
5. Hourmozdi JJ, et al. Routine Chest Radiography Is Not Necessary After Ultrasound-Guided Right Internal Jugular Vein Catheterization. Crit Care Med. 2016;44(9):e804-e808. PMID: 27035241
6. Gottlieb M, Russell FM. How Safe Is the Ultrasonographically Guided Peripheral Internal Jugular Line?. Ann Emerg Med. 2018;71(1):132-137. PMID: 28969927
7. Pitiriga V, et al. Central venous catheter-related bloodstream infection and colonization: the impact of insertion site and distribution of multidrug-resistant pathogens. Antimicrob Resist Infect Control. 2020;9(1):189. Published 2020 Dec 1. PMID: 33261661
8. Parienti JJ, et al. Intravascular Complications of Central Venous Catheterization by Insertion Site. N Engl J Med. 2015;373(13):1220-1229. PMID: 26398070