From
StayCurrentMD
Update Course Rewind 2025: Updates in Central Line Management
With Dr. Nathan Fein · hosted by Dr. Jill Knepprath
Chapter 1 of 4 · Case-Based Learning
Port malfunction case
Case Presentation: Malfunctioning Port with Normal Chest X-ray
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Educational content from recorded physician discussions — not medical advice. Talk to your (or your child's) care team about your situation.
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What the experts said
The patient was a teenager with a left subclavian dual lumen port and a history of subclavian thrombus that was successfully treated with heparin.
The medial lumen of the port would not flush, while the lateral lumen functioned normally.
Fluoroscopic dye study showed contrast welling up around the port and in the pocket itself, not going to the reservoir, when pushing very hard.
The port malfunction was due to improper accessing; re-accessing the port resolved the issue and it flushed normally.
The hematology oncology team wanted the port removed immediately and had scheduled the patient for removal and replacement.
Ultrasound suggested possible narrowing around the port catheter itself.
If you pull the port catheter out in the setting of vessel narrowing, you have not lost any potential access for interventional radiology to work to maintain it.
Vasculopaths are patients who have no upper and lower central access, no normal access.
Interventional radiology can perform sharp recanalization of the SVC for vasculopaths.
Sharp SVC recanalization uses ultrasound to visualize the jugular vein and a combination of fluoroscopy and ultrasound to guide a small needle through the area of stenosis, through the SVC beyond the stenosis, and into the right atrium.
In sharp SVC recanalization, the interventionist can approach from below via the femoral vein to drive a needle through a target to connect the two sides, then perform balloon angioplasty, stent placement, and line placement.
The chest X-ray was normal.
An unnecessary port removal procedure could have sacrificed future vascular access.
Before removing a malfunctioning central line, ensure appropriate access first.
For patients who have lost central venous access, consult interventional radiology to restore access using specialized techniques.
