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How to Inject Drugs Into a Vein

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You may find intravenous injections a difficult procedure, but there are a few tactics that can help you get the injections right. Do not attempt intravenous injection unless you have been trained. If you are a medical professional learning how to inject drugs or if you need to inject yourself, prepare a syringe first. Then, find the vein and inject the medicine slowly. Always use sterile equipment, inject drugs into a blood vessel, and monitor for complications after the injection.

Prepare before injection

Image titled Inject Into a Vein Step 1

Image titled Inject Into a Vein Step 1

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Hand washing. Before touching medication and needles, wash your hands thoroughly with soap and warm water. Rub the soap between your hands for 20 seconds. Then, rinse off all soap and dry your hands completely with a clean cloth or paper towel.

  • To reduce the risk of infection or infection, you should also wear sterile disposable medical gloves. Gloves are not always necessary, but you may have to in a medical setting. [1]
  • If you need to time your hand washing, sing the happy birthday song twice. This time is about 20 seconds. [2]
Image titled Inject Into a Vein Step 2

Image titled Inject Into a Vein Step 2

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Insert the needle into the vial and pull the plunger. Take a clean unused syringe and insert the needle into the vial. Pull the plunger of the syringe to withdraw the required amount of medication. Only inject the medicine in the dose prescribed by your doctor. Do not inject more or less. Follow your doctor’s additional instructions regarding medication preparation. [3]

  • Always check to make sure the medicine is safe to use. The medicine in the vial must be free from dirt or discoloration, the vial must not be cracked and show no signs of damage.
Image titled Inject Into a Vein Step 3

Image titled Inject Into a Vein Step 3

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Hold the syringe with the needle facing up and expel all the air. After withdrawing the required amount of medication into the syringe, rotate the syringe so that the needle is facing up. Then, flick the barrel of the syringe to bring all the air bubbles to the surface. Push the piston just enough to force the excess air out of the tube. [4]

  • Always make sure all the air has been expelled from the tube before injecting medication.
Image titled Inject Into a Vein Step 4

Image titled Inject Into a Vein Step 4

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Place the syringe on a flat and clean surface. After expelling the air, place the protective cap on the tip of the needle and place the syringe on a sterile surface to prepare it for use. Do not let the needle come into contact with any unsterile surface. [5]

  • If you drop the needle or accidentally touch it, you must prepare a new syringe.
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Find veins

Image titled Inject Into a Vein Step 5

Image titled Inject Into a Vein Step 5

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Have the patient drink 2-3 cups of water. When the body is sufficiently hydrated, more blood is pumped through the blood vessels and causes the blood vessels to become larger and more conspicuous. You will have a hard time finding the veins of someone who is dehydrated. If you suspect someone is dehydrated, ask them to drink 2-3 cups of water before the injection. [6]

  • Fruit juices, tea or decaffeinated coffee can hydrate the body.
  • If the person is severely dehydrated, they may need fluids. Continue looking for a vein if they are unable to drink water or other fluids.
Image titled Inject Into a Vein Step 6

Image titled Inject Into a Vein Step 6

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Find the vein on the arm near the elbow. Veins in this area of the arm are safest to inject, and they’re also easier to see. You should ask the patient which arm they would like the injection to be in. Observe that arm to see if a vein can be found. If not found, you need to bring the vein to the surface. [7]

  • When frequent injections are required, alternate arms to prevent varicose veins.
  • Be especially careful if you plan to inject the medicine into your hands or feet. The veins here are often visible, but they are quite fragile and can rupture easily. Injections into these areas also cause a lot of pain. If the patient has diabetes, do not inject into the foot, because this is very dangerous.
  • Never inject medicine into your neck, head, groin or wrists! There are large arteries in the neck and groin, so the patient is susceptible to overdose, amputation of a leg or arm, and even death.
Image titled Inject Into a Vein Step 7

Image titled Inject Into a Vein Step 7

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Wrap the tourniquet around the arm to bring the vein to the surface. The elastic tourniquet is located about 5-10 cm from the injection site. Use a single knot or simply tuck the tourniquets under the cuff to keep them in place. To inject the medicine into the inside of the elbow, make sure to wrap the tourniquet at the top of the biceps muscle block instead of just above it.

  • The tourniquet should be wound so that it is easy to remove. Never use a belt or other stiff fabric as it will deform the vein. [8]
  • If the vein is too hard to see, consider wrapping a tourniquet around your shoulder to force blood down your arm.
Image titled Inject Into a Vein Step 8

Image titled Inject Into a Vein Step 8

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Instruct the patient to hold and open the hand. You can give the medical ball to them and ask them to squeeze and release the ball several times. See if the vein becomes easier to see after about 30-60 seconds. [9]
Image titled Inject Into a Vein Step 9

Image titled Inject Into a Vein Step 9

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Press your finger into the vein. Once the vein is found, you will place a finger on it. Use this finger to gently press up and down for 20-30 seconds. This will make the veins dilate and easier to see. [10]

  • Don’t press too hard! You should only use light force to manipulate the veins.
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Image titled Inject Into a Vein Step 10

Image titled Inject Into a Vein Step 10

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Apply warmth to the area if you still can’t see the vein. Warm compresses will help the veins dilate and become easier to see. If you need to warm the injection site, place a damp washcloth in the microwave for 15-30 seconds, then place the towel over the vein. You can also soak the injection site directly in warm water. [11]

  • Other options to warm up the whole body include drinking hot beverages, like tea or coffee, or taking a warm bath.
  • Never give injections to someone who is in a bath. Depending on the effects of the drug, they can drown. [12]
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Image titled Inject Into a Vein Step 11

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Once the vein is found, clean the injection site with rubbing alcohol. Make sure the area to be injected is clean before injecting the medicine. Once you’ve found a viable vein, you’ll clean the site with rubbing alcohol. [13]

  • If you don’t have an alcohol swab available, dip a sterile cotton ball in isopropyl alcohol to clean the injection site.

Needle piercing and injection

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Image titled Inject Into a Vein Step 12

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Insert the needle into the vein at a 45-degree angle to the arm. Remove the needle cap and carefully insert the needle into the vein at the injection site. Insert the needle so that the medicine will be injected in the same direction as the blood flow. Because veins carry blood to the heart, you’ll inject the medication in the direction it flows back to the heart. Remember to position the bevel of the needle point upwards when inserting the needle. [14]

  • If you are unsure or have questions about how to insert the needle, ask your doctor or nurse before giving an intravenous injection.
  • Only inject the drug when you have clearly identified the vein to be injected. Drugs given intravenously if injected into other parts of the body can be dangerous and even fatal.
Image titled Inject Into a Vein Step 13

Image titled Inject Into a Vein Step 13

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Pull the plunger backward to confirm the needle is in the vein. Carefully pull the plunger back slightly and see if blood is drawn into the syringe. If there is no blood, the needle is not in the vein and you must remove the needle and re-insert it. If there is blood, you have punctured the vein and can proceed to the next step. [15]

  • If the blood comes out with fairly strong pressure, is bright red, and bubbly, you’ve inserted a needle into an artery. Immediately remove the needle and press on the injection site for at least 5 minutes to stop bleeding. Be especially careful if you hit the brachial artery on the inside of the elbow, as too much blood escaping from the vessel can affect hand function. Try again with a new needle when the bleeding has stopped. [16]
Image titled Inject Into a Vein Step 14

Image titled Inject Into a Vein Step 14

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Remove the tourniquet before injecting the drug. If you wound the tourniquet before inserting the needle, the tourniquet should be removed at this time. Injecting medication with your hand still in a tourniquet can cause a vein to burst. [17]

  • If the patient is holding their hand, ask them to relax the hand.
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Image titled Inject Into a Vein Step 15

Image titled Inject Into a Vein Step 15

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Depress the plunger slowly to inject the drug into the vein. It is important to give the injection slowly to avoid overpressure in the vein. Press the plunger at a slow and steady rate until the medicine is completely injected into the body. [18]
Image titled Inject Into a Vein Step 16

Image titled Inject Into a Vein Step 16

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Slowly pull out the needle and press on the injection site. After the injection is complete, pull out the needle slowly and immediately press on the injection site. Place a gauze pad or cotton ball on the injection site for 30-60 seconds to stop bleeding. [19]

  • If the bleeding is heavy and won’t stop, call 911.
Image titled Inject Into a Vein Step 17

Image titled Inject Into a Vein Step 17

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Bandage the injection site. Place a sterile gauze pad over the injection site, then apply medical tape to hold the gauze in place. This step helps maintain pressure on the spot after you remove your finger.

  • After you have finished dressing the injection site, the injection procedure is complete.
  • Image titled Inject Into a Vein Step 18

    Image titled Inject Into a Vein Step 18

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    Seek medical attention for emergencies. There are many complications to watch out for after injection. You may notice a problem right after the injection, or for a few days afterward. Seek immediate medical attention if: [20]

    • You hit an artery and you can’t stop the bleeding.
    • The injection area is hot, red, and swollen.
    • You inject medicine into your leg and the leg is painful, swollen, or unable to move.
    • The injection site has an abscess.
    • The arm or leg turns white and cold after the injection.
    • You accidentally put a needle in someone’s body after using that needle to inject someone else.

    • Warning

    • Seek help if you plan to inject drugs. Talk to a friend or loved one to ask for their help.
    • Do not inject yourself or others unless you have been trained. Intravenous injections are more risky than injecting drugs into a muscle or under the skin.
    • Do not inject any medication unless directed by your doctor.

    Things you need

    • Wet and warm towel (optional)
    • Medical ball (optional)
    • Soap
    • Water
    • Clean paper towels
    • Disposable medical gloves
    • Prescription drugs
    • Sterile syringes and needles
    • Cleaning Alcohol (Isopropyl)
    • Sterile Cotton
    • Garo
    • Sterile gauze
    • Medical tape

    You may find intravenous injections a difficult procedure, but there are a few tactics that can help you get the injections right. Do not attempt intravenous injection unless you have been trained. If you are a medical professional learning how to inject drugs or if you need to inject yourself, prepare a syringe first. Then, find the vein and inject the medicine slowly. Always use sterile equipment, inject drugs into a blood vessel, and monitor for complications after the injection.

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