What are the types of IV fluids?
There are different kinds of IV fluids. Your healthcare provider will decide which type is right for you, depending on why you need them.
Crystalloid solutions: These are the most common types of IV fluid. They contain small, dissolved molecules that pass easily from the bloodstream into tissues and cells. Examples include normal saline, which is salt in water, and D5W, which is dextrose (sugar) in water. Another example is lactated Ringer’s, which contains sodium, chloride, potassium, calcium and lactate. It’s used for aggressive fluid replacement.
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Colloids: These are large molecules that can’t easily pass through cell membranes and are more likely to stay in the blood vessels. Examples include albumin and hetastarch.
What happens during rehydration with IV fluids?
If you need IV fluids, a healthcare provider will:
- Decide the type of IV fluid you need.
- Determine the amount of fluid you need and how quickly. This is based on many factors, including your weight, age and medical conditions.
- Disinfect (clean) the skin where the IV will go, usually on the inside of the elbow or on top of the hand.
- Tie an elastic band (tourniquet) around your arm to make blood fill the veins.
- Examine the veins to find the exact insertion site.
- Slide a sterile needle into the vein, which may pinch. The needle will have a small plastic tube at the other end.
- Remove the tourniquet.
- Place a small plastic attachment onto the tube.
- Test the tube to make sure a little bit of fluid can go in.
- Tape the IV needle to your arm so that it stays in place.
- Attach the small tube to a longer tube, and then attach it to a bag of fluids.
- Hang the bag from a hook on a tall stand (called an IV stand).
- Turn on a machine that’ll pump the fluid into the IV line.
- Check your IV line regularly and monitor the amount of fluid entering your body.
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The IV also may be used to deliver medications or nutrition.
What happens after IV fluids?
IV fluids can make you feel better very quickly. But your healthcare providers will determine when you can stop receiving intravenous fluids.
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