A port is placed through a minor surgical procedure that typically takes 45 to 60 minutes, performed under local anesthesia with sedation. A surgeon or interventional radiologist makes a small incision on the upper chest, creates a pocket under the skin, and threads a thin catheter into a large vein near the heart. The entire device sits beneath the skin once the procedure is complete, with no external parts visible.
What a Port Actually Is
A port (sometimes called a port-a-cath or implantable venous access port) is a small device placed under the skin that gives medical teams a reliable way to deliver medications, chemotherapy, IV fluids, or draw blood without repeatedly poking your veins. It has three basic parts: a small reservoir made of stainless steel or hard plastic (roughly the size of a quarter), a self-sealing silicone top called a septum, and a flexible catheter tube that connects the reservoir to a large central vein.
When nurses need to use the port, they press a special non-coring needle through your skin and into the silicone septum. This type of needle is designed to part the silicone fibers rather than cut through them, which is why the septum can handle up to 2,000 punctures before it needs replacing. The reservoir is typically implanted just over the large chest muscle on one side, where it sits flat enough to be barely noticeable under the skin.
Preparing for the Procedure
You’ll generally be asked not to eat or drink for several hours before the procedure. Routine blood clotting tests are not automatically required for every patient. Instead, your medical team will ask about your bleeding history, any family history of clotting disorders, and whether you take blood thinners or antiplatelet medications. If any of those raise concerns, they may order specific lab work. Otherwise, extensive pre-operative testing is typically unnecessary.
Most ports are placed on the right side of the chest. If the veins on the right side have a blood clot or other issue, the left side is used instead. Your team will discuss the plan with you beforehand and mark the site.
Step by Step: How the Port Goes In
The procedure is done in an operating room or interventional radiology suite. You’ll lie on your back, and the team will give you IV sedation to keep you relaxed and drowsy, along with local anesthetic injected into the skin and tissue of the chest and neck area. You’re awake but unlikely to feel pain. General anesthesia is rarely needed, though some patients who are especially anxious may request it.
The first step is accessing a large vein. Using ultrasound to see the vein in real time, the doctor punctures the internal jugular vein in the neck (about a centimeter above the collarbone) with a small needle. A thin guidewire is threaded through that needle and advanced down into the large vein near the heart. The needle is then removed, leaving only the wire in place.
Next, the doctor creates the port pocket. About 8 to 12 centimeters below the puncture site on the upper chest, a small incision is made and a shallow pocket (roughly one centimeter deep) is carved out under the skin using careful dissection. This is where the port reservoir will sit.
A tunneling tool is then passed under the skin from the chest pocket up to the neck puncture site. The catheter portion of the port is pulled through this tunnel, connecting the reservoir in the chest pocket to the vein entry point in the neck. The catheter is attached to the port body, and the whole system is flushed with saline to confirm everything is sealed and working.
The catheter is trimmed to the right length, then threaded through a special introducer sheath that has been placed over the guidewire into the vein. Using fluoroscopy (a live X-ray), the doctor watches the catheter advance until its tip reaches the junction where the large vein meets the heart, or about 2 to 3 centimeters below a bony landmark called the carina. If the exact junction is hard to see, the tip is positioned slightly lower rather than higher to ensure reliable function.
Once the catheter tip is confirmed in the right spot, the introducer sheath is peeled away, leaving only the catheter in the vein. The port reservoir is tucked into the chest pocket, and both incisions are closed with stitches or surgical glue. A final X-ray confirms correct positioning and checks for any immediate complications like air leaking into the chest cavity.
Why Imaging Guidance Matters
Two types of imaging make port placement safer and more precise. Ultrasound is used at the start to check that the target vein is open, measure its size, and rule out blood clots before any needle goes in. It also guides the initial puncture in real time, which brings the technical success rate close to 100% and significantly reduces the risk of accidentally hitting an artery or the lung.
Fluoroscopy takes over once the catheter is inside the body. It lets the doctor see exactly where the catheter travels and confirm that the tip lands in the ideal position. It also allows immediate testing of port function before the incisions are closed. A chest X-ray taken afterward with you sitting upright serves as a final safety check.
Recovery After Placement
After the procedure, you’ll spend about 1 to 2 hours in a recovery area while the sedation wears off. Some soreness, swelling, and bruising around the incision sites is normal for the first few days. You’ll go home the same day in most cases.
For wound care, keep the dressing clean and dry. If surgical glue was used, keep the area dry for the first five days and cover it while bathing. Avoid lifting, pulling, straining, or sports for about a month, or until your care team clears you. This gives the pocket time to heal securely around the port.
The standard recommendation is to wait at least 24 hours before using the port for chemotherapy or other treatments. However, some medical centers have found it safe to use the port on the same day it’s placed when the patient is already admitted to the hospital and treatment is time-sensitive.
Potential Complications
The overall complication rate for port placement ranges from about 7% to 12.5%. Infection is the most common problem, with reported rates between 0.6% and 27%, a wide range that depends heavily on the patient’s immune status and how the port is maintained over time. Signs of port infection include redness, warmth, or swelling around the device, fever, or chills when the port is accessed.
Catheter-related blood clots occur in 5% to 18% of patients. These don’t always require port removal and can often be managed with blood-thinning medication. If the subclavian vein (under the collarbone) is used instead of the jugular, the risk of puncturing the lung membrane rises to between 1.5% and 6%. This complication, called a pneumothorax, is one reason many centers now prefer the jugular vein approach, which carries a lower risk of lung injury.
Less common issues include the catheter migrating out of position, the port flipping inside its pocket, or a fracture in the catheter over months or years of use. These are typically caught during routine imaging or when the port stops functioning properly.