Mastering the Infusion: A Guide to Self-Administration and Port Care

Living with hereditary angioedema (HAE) means you must be ready for a swelling attack at any time. Learning to give yourself your own medicine can change your life. It gives you freedom and control over your health.¹

Staying safe from germs

Safety starts with a clean space. You must use an aseptic technique to prevent germs from entering your body. One of the best ways to do this is the "Clean Table" method. Germs are very small and can cause serious infections if they get into your bloodstream.^2,3

First, choose a hard, flat surface like a kitchen table. Clear the table of all items. Use a disinfectant spray or a bleach wipe to clean the entire surface. Let the table air dry completely. Do not use a towel to dry it. Next, wash your hands with soap and water for at least 20 seconds.^2,3

Lay out your supplies on your clean table. Do not let "key parts" touch the table or your skin. Key parts include the tip of the syringe and the needle. These parts must stay sterile.^2,3

Before you start, you must "scrub the hub." This means you use an alcohol wipe to scrub the top of your medicine vial or your IV port for 15 seconds. Make sure you also scrub the neck and threads of the vial, not just the very top. Germs love to hide in the ridges where the cap was attached. Let it dry for another 15 seconds. This simple step kills germs that hide on the surface.^2,3

Mixing your medicine: Swirl, do not shake

Many HAE medicines are made of delicate proteins. These proteins are very fragile. When you mix the powder with the liquid, you must be very gentle. This process is called reconstitution.⁴

You should always swirl the vial gently. Do not shake it. If you shake the vial, the medicine will start to foam. This foam is a sign that the proteins are breaking apart or "denaturing." If the proteins break, the medicine will not work as well to stop your HAE attack.⁴

Shaking can also create tiny clumps called aggregates. These clumps might cause your body to have a bad reaction to the medicine. Be patient and swirl until the liquid is clear.⁴

Understanding your access: Veins and ports

There are 2 main ways to get medicine into your bloodstream. You might use a regular vein in your arm, which is called peripheral access. Or you might have a port under your skin.^3,5

Peripheral veins

If you use a vein in your arm, you must find a new spot for each infusion. This helps keep your veins healthy. If you use the same spot every time, the vein can become scarred and hard. You should always look for a vein that feels "bouncy" to the touch.^3,5

Indwelling ports

A port is a small device placed under the skin of your chest. It is connected to a large vein. Ports are helpful if you need infusions very often.^3,5

To keep a port working, you must perform "flushing." This means you push a small amount of salt water (saline) through the port after every use. Sometimes, your doctor will ask you to use a medicine called heparin to prevent blood clots. If a port is not flushed correctly, it can become blocked.^3,5

Troubleshooting and red flags

Most of the time, self-infusion goes well. However, you must watch for signs that something is wrong. Small problems can often be fixed at home, but big problems need a doctor:³

• Pain and burning – If you feel sharp pain or burning at the site, stop the infusion immediately. The needle may have slipped out of the vein.
• Hematoma or bruising – A small bruise is normal. A large, hard, painful lump is called a hematoma. This happens when blood leaks under the skin. Apply a cold pack to the area.
• Redness and warmth – If the site becomes red, hot, or leaks fluid, you may have an infection. Call your doctor right away.

When to go to the emergency room (ER)

HAE can be very dangerous if the swelling happens in your throat, which can cause breathing problems. You must go to the ER or call 911 if you have these "red flag" symptoms:^3,6

• You have trouble breathing or swallowing
• Your voice sounds raspy or "tight"
• You feel your tongue or throat swelling
• You feel dizzy or faint after starting the medicine

Managing HAE at home takes practice. Do not be afraid to ask your nurse for help until you feel ready. By following these steps, you can take charge of your health and stay safe.