What is a Cannula Used For?
A cannula is a thin, flexible tube that is inserted into a vein or other part of the body to deliver fluids. The most common type is the intravenous (IV) cannula, which delivers fluids, medicine, or nutrients directly into the bloodstream. It’s also used to take blood samples without needing to stick someone with a needle multiple times. Doctors use cannulas for many reasons:
- Giving fluids to treat dehydration
- Administering medications
- Delivering blood or blood products
- Helping with oxygen delivery (in nasal cannulas)
What is a Cannula Made Of?
Cannulas are made from flexible plastic materials like Teflon or polyurethane. Flexible enough to move with the body but strong enough to stay in place. Some parts, like the needle inside the cannula, are made from stainless steel and removed after the tube is inserted.
How Does a Cannula Work?
Once inserted into a vein (usually on the hand or arm), the cannula allows fluids or medications to flow directly into the bloodstream through an IV line. This direct access helps the medicine work faster and more effectively. For oxygen cannulas (used in the nose), the device helps deliver oxygen into the lungs to help people breathe more easily.
Cannula Usage Instructions
A cannula doesn’t have a “dosage” like medicine, but the fluids or drugs given through it do. Doctors or nurses calculate the correct amount based on the patient’s age, weight, and condition. Once inserted, the cannula can stay in place for a few hours or up to a few days, depending on the situation. Medical staff regularly check the site to make sure there are no signs of infection or blockage.
How Fast Does It Work?
A cannula works quickly and allows the medicine to go straight into your bloodstream, it often starts working within minutes. This is especially helpful in emergencies, when quick treatment is crucial.
Side Effects of a Cannula
Cannulas are generally safe, but like any medical device, they can have side effects:
- Redness or swelling at the insertion site,
- Pain or discomfort
- Risk of infection if not cleaned properly
- Vein irritation (called phlebitis)
- Very rarely, air bubbles or blockages
Medical staff are trained to monitor and reduce these risks.
Is a cannula painful?
You might feel a small pinch when it’s inserted, but most people say it’s not too painful. After it’s in, you might forget it’s even there.
Can I move my arm if I have a cannula?
Yes, but try not to move it too much or bend it too often. It can make the cannula shift or become uncomfortable.
How long can I keep a cannula in?
Usually 2 to 3 days, but doctors might change it sooner to prevent infection.
Do I need a cannula for all hospital treatments?
Not always. It depends on what kind of treatment you need. It’s mostly used for IV therapies.
Where can you buy a Cannula in Nigeria?
You can purchase a Cannula online at Drugstore.ng, Nigeria’s largest online pharmacy store.
