Intravenous Injection Procedure with Rationale

Intravenous (IV) injection is a commonly used medical procedure for the administration of fluids, medications, or blood products directly into the bloodstream. It is crucial for healthcare professionals to follow a standardized procedure to ensure the safe and effective delivery of IV therapy. This blog post outlines the step-by-step procedure for performing an IV injection and provides the rationale behind each step.


Before initiating the IV injection procedure, it is essential to gather all the necessary supplies and equipment. These include:

  • Sterile IV catheter or cannula
  • Sterile IV tubing
  • Sterile saline or catheter lock solution
  • Antiseptic solution (e.g., chlorhexidine or iodine)
  • Gloves and personal protective equipment
  • Transparent dressing or securement device
  • Tourniquet
  • Alcohol swabs
  • Medication or fluid to be administered

The Procedure

1. Perform hand hygiene and don personal protective equipment (gloves).

2. Explain the procedure to the patient, ensuring their understanding and consent.

3. Identify a suitable vein for cannulation, considering factors such as size, accessibility, and condition of the vein.

4. Apply a tourniquet approximately 4-6 inches above the selected insertion site, ensuring it is tight enough to restrict blood flow without causing discomfort to the patient.

5. Cleanse the insertion site using an antiseptic solution, starting from the center and moving outward in a circular motion to a 2-inch diameter area.

6. Allow the antiseptic solution to air dry completely or use sterile gauze to blot the site gently.

7. Put on sterile gloves to maintain aseptic technique during the actual cannulation.

8. Stabilize the vein by gently pulling the skin taut below the selected insertion site.

9. Using a bevel-up technique, insert the sterile IV catheter into the vein at a 20-30 degree angle. Advance the catheter slightly further after observing a flashback of blood to ensure proper placement.

10. Remove the tourniquet and release the patient’s hand to restore blood flow.

11. While stabilizing the catheter, connect the sterile IV tubing to the hub securely.

12. Prime the IV tubing with the sterile saline solution, removing all air bubbles and ensuring proper flow.

13. Begin administering the prescribed medication or fluid, monitoring the patient for any adverse reactions.

14. Secure the IV catheter in place using a transparent dressing or securement device, ensuring the site is visible for monitoring and assessment.

15. Document the procedure, including the date, time, insertion site, size of the catheter, and patient’s tolerance or any complications.

16. Dispose of all used supplies in appropriate waste containers and remove personal protective equipment.


The above procedure follows evidence-based guidelines and best practices to ensure patient safety and successful IV therapy. The rationale behind each step is as follows:

  1. The use of gloves and hand hygiene reduces the risk of infection.
  2. Explaining the procedure to the patient promotes communication and informed consent.
  3. Selecting a suitable vein ensures successful cannulation and minimizes potential complications.
  4. The tourniquet helps visualize and access veins more easily.
  5. Cleansing the insertion site with an antiseptic solution reduces the risk of infection.
  6. Allowing the antiseptic solution to dry minimizes the risk of contamination.
  7. Sterile gloves maintain aseptic technique and reduce the risk of infection.
  8. Stabilizing the vein eases catheter insertion.
  9. A proper insertion angle ensures successful cannulation.
  10. Removing the tourniquet restores proper blood flow and reduces discomfort.
  11. Connecting the IV tubing securely avoids dislodgement and infiltration.
  12. Priming the tubing prevents air embolisms and ensures proper fluid flow.
  13. Monitoring for adverse reactions guarantees patient safety during administration.
  14. A securement device prevents accidental dislodgement or infection.
  15. Documentation allows for accurate tracking and continuity of care.
  16. Proper waste disposal and PPE removal maintain a safe environment.


The above-described intravenous injection procedure outlines the necessary steps to ensure the efficient and safe administration of IV therapy. Strict adherence to a standardized process minimizes risks and maximizes positive patient outcomes. Remember to always stay updated with current guidelines and practices to provide the best care possible.

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