By Laura, BSN, RN, CRNI | ThisRN
You’re sitting in a hospital bed, or maybe a treatment chair, and a nurse walks over with a small tray and a pair of gloves. Your stomach tightens a little. You’re about to get an IV.
Most people at this point are thinking one of two things: how much is this going to hurt, and please don’t miss.
What almost nobody is thinking about is what an IV actually is, how it works, or what’s really going on during those few minutes. After eleven years as a registered nurse — and as a Certified Registered Nurse Infusion — I’ve placed more IVs than I can count. Here’s what I wish every patient knew before I walked into the room.
But first — a safety note before we go any further. If you don’t see your nurse wash their hands before touching you, please ask them to. Soap and water or hand sanitizer, either is fine. I say this not to be critical of my colleagues but because I understand exactly how it happens — nurses move from patient to patient like honeybees, room to room, all day long, and in the blur of a busy shift hand hygiene can be genuinely forgotten. It is never intentional. But you are allowed to ask. You are never being difficult by asking. It is one of the simplest and most effective things that keeps you safe.
This is the big one. The single most common misconception I encounter, from patients of all ages and backgrounds, is the belief that the needle stays in.
It doesn’t.
There is no needle living in your arm
What we insert is called a peripheral IV catheter. It has two parts: a needle, called a stylet, and a thin flexible tube, called a cannula, that sits over the needle like a sleeve. The needle is used only to pierce the skin and enter the vein. The moment it’s in, the soft flexible catheter slides off the needle and stays behind — the needle comes straight back out and goes directly into a sharps container.
What remains in your arm is nothing more than a small, soft, flexible plastic tube about the width of a coffee stirrer. That’s it. You can bend your arm. You can move. It flexes with you because it’s designed to.
Knowing this tends to change everything for anxious patients. You are not walking around with a needle in your vein. You never were.
Why the bend of your elbow isn’t always the best spot
If you’ve ever had bloodwork or an IV placed in the emergency room, chances are it went into your antecubital fossa — the soft area at the inside of your elbow. It’s a common site because the veins there are often large, visible, and easy to access quickly.
But it’s not always the best choice, and here’s why: every time you bend your elbow, you’re putting stress on that catheter. It can kink. It can trigger the IV pump alarm. It can make you feel uncomfortable every time you reach for something.
There’s also a more serious concern that doesn’t get talked about enough. Repeated flexing of the arm at the antecubital site can cause the insertion hole — the small opening in the skin where the catheter enters — to gradually enlarge over time. That enlarged opening becomes a point of vulnerability. Fluid can leak around the catheter rather than flowing through it, and that same opening can allow bacteria to migrate in. The result can be phlebitis, localized infection, or worse. What started as a convenient placement can become a real problem simply because of where it was placed and how much that joint moves.
Experienced infusion nurses often look further down the arm — the forearm, even the hand — for placements that can stay comfortable and functional for several days. A well-placed IV in a good location, properly secured, can last 72 to 96 hours without problems. That means fewer resticks, fewer interruptions to your care, and a lot less misery overall.
The best IV placement isn’t always the fastest one. It’s the one that works well for as long as you need it.
The pain question — honestly answered
Yes, there is a stick. There’s no getting around that. But the level of discomfort varies enormously depending on the site, the catheter size, the skill of the person placing it, and frankly your individual anatomy and hydration level.
Dehydrated veins are harder to access and more likely to roll or collapse during insertion. If you know you’re heading somewhere that might involve an IV — a scheduled procedure, a planned admission — drinking water beforehand genuinely helps. Your veins will be fuller, more visible, and easier to cannulate cleanly on the first attempt.
Some nurses will also warm the site first, which dilates the vein and makes placement smoother. Don’t be shy about asking for that.
And if a nurse misses on the first try, it is okay to ask for someone else to attempt it. A skilled IV nurse or a vascular access specialist exists for exactly this reason. Your comfort and your veins matter.
Something I need to say about infection risk — and a practice that concerns me
I’m going to be direct here, because this is something patients deserve to know.
IV insertion is a clean procedure. That means we use clean gloves, clean technique, and we prepare the insertion site carefully with an antiseptic before we proceed. The site where the catheter enters your skin is a direct pathway into your bloodstream, and infection at an IV site is a real risk. Phlebitis — inflammation of the vein — can develop from mechanical irritation, the medications being infused, or infection, and in serious cases bacteria can enter the bloodstream directly. Proper technique is the only thing standing between a routine procedure and a serious complication.
Part of that technique is gloves. Nurses wear gloves during IV insertion for two critical reasons — to protect you from bacteria that live on human hands, and to protect themselves. That second part often gets overlooked.
When a nurse cuts the fingertip off one glove to feel the vein more easily with a bare fingertip, they are putting both you and themselves at risk. For the patient, that ungloved fingertip touching the insertion site can introduce bacteria directly at the entry point into your vein. But the risk runs the other way too. If that nurse has even a small break in their skin — a paper cut they forgot about, a hangnail, a tiny crack — that opening becomes an entry point for whatever is in your bloodstream. HIV, hepatitis, and other bloodborne pathogens are real occupational hazards for nurses, and intact gloves are a primary line of defense.
Cutting a glove defeats the purpose entirely for everyone in the room.
If you ever see this happening, you are within your rights to ask the nurse to use a new, intact pair of gloves. You can say it calmly and simply: “Would you mind using a fresh pair of gloves before you start?” No reasonable nurse will take offense at a patient advocating for their own safety.
What to watch for after your IV is placed
Once your IV is in, keep an eye on it. Signs that something isn’t right include:
- Redness, warmth, or swelling at or around the insertion site
- Pain or burning during an infusion
- The site feeling hard or rope-like to the touch
- Fluid leaking under the skin (this is called infiltration)
Any of these is worth flagging to your nurse immediately. A catheter that isn’t working well should come out. There is no prize for tolerating a bad IV.
The bottom line
Getting an IV is one of the most common medical procedures in the world, and it’s also one of the least explained. Most patients go through it without ever understanding what was just placed in their body, why it was placed where it was, or what to do if something feels wrong.
You don’t have to be one of those patients.
Ask questions. Drink water. Know that the needle leaves the moment it enters. And if anything feels off — before, during, or after — speak up. That’s not being difficult. That’s being an informed participant in your own care.
That’s exactly what ThisRN is here for.
Laura is a registered nurse with 11 years of clinical experience, including oncology care, travel nursing, and independent pharmaceutical nursing. She holds certifications as a BSN, RN, and CRNI (Certified Registered Nurse Infusion).
ThisRN 
Leave a comment