Looking After Your Port — Between Cycles

No. Flushing a port requires a Huber needle, sterile saline, heparin solution, and trained technique to avoid introducing infection directly into your bloodstream. These cannot be done safely outside a clinical setting. If travelling to a clinic is genuinely difficult for you, ask your team whether a home-nursing service can visit you to perform the flush. That option is available in some areas.

A missed flush increases the risk of the catheter clotting. A clotted port may be unusable, which can delay your next treatment while the team assesses it. If you cannot attend a scheduled flush, call ahead and rebook rather than simply not going. Your team can usually find an alternative slot quickly, and reaching them before the port blocks is much simpler than managing a block after it has happened.

You will not usually be able to tell at home, because you cannot access the port yourself. The nurse will notice during the next access — the flush may not go in smoothly, or blood cannot be drawn back easily. At home, what you watch for is any change around the site: pain, new swelling, or redness. Those are your signals, not a sensation of blockage. Always report anything unusual at the site to your care team.

Yes, when the port is not accessed — that is, when there is no needle in place. Normal showering is fine. Ask your care team specifically about swimming or submerging the site, as their advice may vary depending on your port type and the condition of your skin. When a needle is in place during or just after a treatment visit, the dressing must stay dry and intact, and you should avoid activities that could dislodge it.

Most people feel a sharp sting for a moment when the needle goes through the skin, similar in sensation to a blood test. It typically eases immediately once the needle is in place. After the first few accesses, most people find it very manageable. If you are anxious about it, ask your nurse whether a numbing cream applied to the skin beforehand is suitable for you — your team can advise on how far in advance to apply it.

Call your team first, unless you also have a fever or feel generally unwell, in which case go to the emergency department directly without waiting. When you call, describe what you see — how large the redness is, whether there is any swelling or discharge, and how long it has been there. Your team will tell you whether to come in to clinic or go to emergency. Do not wait to see whether it settles — port infections can escalate quickly because of where the catheter sits.