Arterial Line Placement: What It Is and What to Expect
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor provides Arterial Line Placement?
Arterial line placement is usually done by a critical care doctor, an anesthesiologist, or another hospital doctor trained in the procedure. It is most often performed in an intensive care unit or during major surgery. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What it is
An arterial line is a thin, flexible tube placed inside an artery, usually at the wrist. It connects to equipment that constantly measures blood pressure and allows blood samples without repeated needle sticks.
Why a doctor might recommend it
Doctors use arterial lines when a patient needs very close watching, most often in the intensive care unit or during major operations. The line gives a more exact, moment-to-moment blood pressure reading than a standard cuff and allows frequent blood tests.
How to prepare
Most people who need an arterial line are already in the hospital. Tell your care team about all medicines you take, especially blood thinners, and about any bleeding problems or allergies.
What happens during it
The skin over the artery is cleaned and numbed with a local anesthetic. The doctor slides the thin tube into the artery, secures it, and connects it to a monitor showing the blood pressure. You may feel pressure, but sharp pain should be minimal.
Recovery
The line stays in place as long as needed, often a few days. When it comes out, staff press on the spot to stop bleeding and apply a bandage. Mild soreness or bruising usually fades within days.
Risks and side effects
Serious problems are uncommon but can happen. Possible risks include bleeding, bruising, infection, and clotting that blocks the artery. Rarely, blood flow to the hand can be reduced. Care teams check the site often and remove the line when it is no longer needed.
Who performs it
The procedure is usually performed by an intensivist, a doctor who specializes in intensive care, or by an anesthesiologist. Nurses and trained staff often help set up equipment and watch the line.
How a direct primary care or concierge doctor fits in
Direct primary care means you pay a doctor a flat monthly fee instead of using insurance for visits; concierge medicine is similar but usually costs more. An arterial line is a hospital procedure, so these doctors would not place one. They can be helpful before and after a hospital stay by explaining why the line was used and referring you to a specialist if needed.
Common questions
Does getting an arterial line hurt?
The area is numbed first, so most people feel pressure rather than sharp pain. Some soreness at the wrist is common afterward. Pain levels differ from person to person.
How long does the line stay in?
It stays in only as long as close monitoring is needed, often a few days. The care team removes it once frequent readings or blood samples are no longer necessary.
Can I go home with an arterial line?
No, arterial lines are used in hospitals where staff can watch them closely. The line is removed before you leave.
Will I need an arterial line for a regular surgery?
Most routine surgeries do not need one. Doctors use arterial lines for major operations or for patients who need close blood pressure monitoring.
Sources
- MedlinePlus - Central venous line - infants: MedlinePlus Medical Encyclopedia
- MedlinePlus - Peripheral Arterial Disease
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
