Psychology, family and everyday life

Hygiene with a catheter: daily rules

A central line (PICC, port or tunnelled line) makes treatment easier, but it can give germs a direct route into the bloodstream. Daily hygiene lowers the risk of infection and blockage.

Last updated: 14 October 2026~1 min read

A central venous catheter with its tubes and clamps — **Figure 1.**A central line: the outside part must stay clean

01Short answer

Touch the line and dressing only with clean hands and only when needed. Dressings, caps and flushes are changed as your team instructs, usually by a nurse; do not open them yourself. The dressing should be dry, clean and sealed; tell your team if it gets wet or lifts. Do not pull on the tubing, protect the clamps and avoid tight belts and bag straps. Do not use scissors or sharp objects near the line. Check daily, and call at once for redness, swelling, pain, discharge, a temperature, chills (especially after a flush) or swelling of the arm or neck.

02Simple explanation

Clean hands.

Dressing: dry.

Do not open it.

Redness, fever: call.

03Scientific explanation

MedlinePlus: caring for a central venous catheter means hand hygiene, keeping the dressing dry and watching for signs of infection.

NCI: chemotherapy can lower neutrophils, platelets and red cells, which raises the risk of infection, bleeding and fatigue.

04What happens in the body?

Biofilm

Germs can form a layer on the surface of the line.

Thrombosis

A clot around the line can swell the arm or neck.

Neutrophils

The first defence against infection; when they are low, hygiene matters most.

Platelets

Help blood clot; when they are low, protect yourself from injury.

05Daily protection: four steps

Wash, protect, check, report.

1WashHands and personal hygiene.

2ProtectAgainst injury and infection.

3CheckTemperature and skin.

4ReportTell your team about changes.

HygieneClean hands.

TemperatureThe 38 °C threshold.

ProtectionYour team's rules.

06Key points at a glance

Topic	In brief
Biofilm	Germs can form a layer on the surface of the line.
Thrombosis	A clot around the line can swell the arm or neck.
Neutrophils	The first defence against infection; when they are low, hygiene matters most.
Platelets	Help blood clot; when they are low, protect yourself from injury.

07Key terms

PICC: A central line inserted through the arm.
Port: A line with a chamber placed under the skin.
ANC: Absolute neutrophil count.
Thrombocytopenia: A low platelet count.

08Key points

Wash.
Protect.
Check.
Wash your hands.
38 °C: call.

09Frequently asked questions

Do these rules apply to a port?

A port is under the skin; when not in use, care is simpler. Ask your team.

A cap came off.

Cover the end with a clean cloth and call at once.

What should I watch every day?

Temperature, bleeding, tiredness and the catheter site; tell your team about any change.

10Questions for your doctor

Take these questions to your appointment. The ones you save are collected on the “My questions” page and stay on this device only.

Do these rules apply to a port?
A cap came off.
What should I watch every day?

My questions

12Sources

MedlinePlus. Central venous catheters - ports
MedlinePlus. Peripherally inserted central catheter - flushing
National Cancer Institute. Infection and Neutropenia during Cancer Treatment
National Cancer Institute. Bleeding and Bruising (Thrombocytopenia) and Cancer Treatment
National Cancer Institute. Anemia and Cancer Treatment
World Health Organization. World Hand Hygiene Day
ICUsteps. Guide to intensive care: effects on your body
National Cancer Institute (NCI). Support for Caregivers of Cancer Patients
American Cancer Society. Caregivers and Family
U.S. Food and Drug Administration. Antibacterial Soap? You Can Skip It

Medical disclaimerThis information is for educational purposes only and does not replace medical advice.

Last updated: 14 October 2026← Back to the list

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