IV Cannulation Nursing Procedure | Steps, Types, Indications & Care
Intravenous (IV) Cannulation – Procedure, Types, Indications & Nursing Care
Introduction
Intravenous (IV) cannulation is a common nursing procedure used to access a vein for administration of fluids, medications and blood products. It is an essential clinical skill for GNM and BSc Nursing students. Proper knowledge of the steps and aseptic technique helps prevent complications like infection and thrombophlebitis.
What is IV Cannulation?
IV cannulation is the insertion of a small flexible tube (cannula) into a vein to provide venous access for fluids, drugs or blood sampling.
Types of Cannula
Peripheral IV cannula
Central venous catheter
Butterfly (scalp vein set)
Common Sizes (Color Coding)
Orange – 14G (trauma)
Grey – 16G
Green – 18G
Pink – 20G
Blue – 22G
Yellow – 24G
Indications
Administration of IV fluids
Drug therapy
Blood transfusion
Emergency access
Nutritional support
Contraindications (Relative)
Infection at insertion site
Burn or injury at site
Lymphedema
Thrombosed veins
Equipment Required
IV cannula (appropriate size)
Tourniquet
Gloves (sterile/clean as per protocol)
Antiseptic solution (spirit/chlorhexidine)
Cotton/gauze
Adhesive tape
IV fluid set
Normal saline flush
Procedure Steps
Explain procedure to patient
Perform hand hygiene and wear gloves
Apply tourniquet above insertion site
Select suitable vein
Clean site with antiseptic
Insert cannula at 15–30° angle
Observe flashback of blood
Advance cannula and remove needle
Release tourniquet
Connect IV line and secure cannula
Flush with saline to check patency
Label with date and time
Complications
Infection
Thrombophlebitis
Infiltration
Extravasation
Hematoma
Nursing Responsibilities
Maintain aseptic technique
Choose correct cannula size
Monitor insertion site regularly
Check for redness, swelling or pain
Change site as per protocol
Educate patient to report discomfort
Key Points for Exams
Cannulation provides venous access
Aseptic technique is essential
Color coding indicates size
Monitor for complications
FAQ
1. What is IV cannulation?
Insertion of a cannula into a vein for fluids or medications.
2. What is the most common site?
Veins of the hand and forearm.
3. What is a major complication?
Thrombophlebitis.
4. Why is flushing done?
To check patency of the cannula.
Conclusion
IV cannulation is a basic and essential nursing procedure. Proper technique, correct site selection and continuous monitoring help ensure patient safety and effective treatment. Regular practice improves confidence in clinical settings.
Medical Disclaimer
This content is for educational purposes only and not a substitute for professional medical advice.
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