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09 Jun 2026 07:18
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Intravenous Cannulation Checklist
Intravenous (IV) cannulation is a fundamental medical procedure used to administer fluids, medications, or blood products directly into a patient's bloodstream. This comprehensive checklist serves as a guide for healthcare professionals to ensure safe, effective, and sterile insertion of an IV cannula.
Note: IV cannulation should only be performed by trained healthcare professionals who have received appropriate education and training. This checklist is intended for use as a reference guide and should be adapted to local protocols and guidelines.
1. Preparation and Equipment
Equipment Check:
- Appropriate size IV cannula (usually 18G-24G depending on patient and purpose)
- Sterile gloves
- Alcohol swab (70% isopropyl alcohol) or chlorhexidine solution
- Non-sterile gloves
- Tourniquet
- Sterile saline or heparinized solution for flushing
- Extension set or infusion tubing
- Transparent dressing
- Sharps container
- Waterproof apron and eye protection if risk of splashing
Pre-procedure Steps:
- Wash hands thoroughly with soap and water or use alcohol-based hand rub
- Explain the procedure to the patient, including what to expect
- Verify patient identity using two identifiers (e.g., name and date of birth)
- Check for allergies, particularly to materials or latex
- Review the patient's medical history: bleeding disorders, anticoagulant therapy
- Select the most appropriate cannula size based on patient factors and intended therapy
- Assess and select the most suitable vein for cannulation
2. Vein Assessment and Selection
Site Selection Criteria:
- Preferably start with the non-dominant arm when possible
- Choose a straight, elastic vein that will accommodate the cannula
- Avoid areas with compromised skin integrity (injury, infection, burns)
- Avoid veins in compromised limbs (e.g., post-mastectomy, stroke, dialysis fistula)
- Consider patient-specific factors: age, medical condition, planned duration of IV therapy
- Good sites include the dorsal hand, forearm, and antecubital fossa
Vein Assessment Techniques:
- Visual inspection: look for visible veins
- Palpation: feel for vein direction, size, and elasticity
- Application of warmth: warm packs can help vasodilation
- Use of tourniquet: apply appropriately to enhance vein prominence
- Patient may be asked to hang their hand below heart level or clench and unclench fist
3. Procedure
Preparation of the Site:
- Apply tourniquet appropriately (typically 5-10 cm above insertion site)
- Tight enough to impede venous flow but not arterial circulation
- Apply solution (alcohol or chlorhexidine) to the insertion site
- Allow adequate time for the solution to dry completely (30 seconds for alcohol, 2 minutes for chlorhexidine)
- Do not touch the cleaned site after preparation
Cannulation Technique:
- Don non-sterile gloves
- Check the cannula packaging for integrity before opening
- Anchor the vein with the non-dominant hand, pulling the skin taut
- Insert the cannula with the bevel up, at an angle of 10-30 degrees
- Advance through the skin and into the vein (watch for flashback of blood)
- Once flashback is observed, decrease the angle slightly and advance further
- While holding the needle stylet stationary, advance the plastic cannula slightly into the vein
- Release the tourniquet
- Apply gentle pressure above the insertion site
- Remove the needle stylet and activate safety mechanism if available
- Dispose of the stylet immediately in the sharps container
Securing the Cannula:
- Connect the extension set or infusion tubing
- Flush with normal saline to confirm patency
- Assess for signs of infiltration (check for swelling, patient discomfort)
- Apply the transparent dressing, ensuring the insertion site is visible
- Label the dressing with date, time, cannula size, and initials of the person who inserted it
- Document the procedure in the patient's medical record
4. Post-procedure Care
Monitoring:
- Regularly assess the IV site for signs of complications
- Check for proper flow and patency of the IV
- Monitor for patient comfort and any signs of pain or discomfort
- Change the dressing as required if it becomes loose, damp, or contaminated
- Replace the cannula according to local policy (usually every 72-96 hours)
5. Complications and Management
Common Complications:
- Infiltration/extravasation: fluid leaking into surrounding tissue
- Phlebitis: vein inflammation
- Thrombophlebitis: inflammation due to blood clot formation
- Infection: local or systemic
- Hematoma: collection of blood outside the vessel
- Nerve injury: numbness, tingling, or shooting pain along nerve pathway
- Catheter embolism: breakage of cannula fragment entering circulation
Signs of Complications:
- Redness, warmth, or swelling at insertion site
- Tenderness or pain along the vein path
- Palpable cord-like vein
- Leakage at the site or from the cannula
- Sluggish flow or inability to flush
- Erythema (red streaks) extending from the site
- Systemic signs: fever, chills
Management of Complications:
- Stop infusion immediately if infiltration/extravasation suspected
- Remove cannula and apply appropriate first aid
- Document the incident thoroughly
- Elevate extremity if appropriate for the specific complication
- Apply warm or cold compresses according to the type of complication
- Notify healthcare provider if signs of systemic infection develop
- Consider alternative sites for reinsertion
6. Special Considerations
Pediatric Patients:
- Use smaller gauge cannulas (typically 22G-24G)
- Consider use of topical anesthetic cream to reduce discomfort
- Distraction techniques can be helpful
- More challenging due to smaller veins and patient anxiety
Elderly Patients:
- Veins may be more fragile and less elastic
- Increased risk of bruising and hematoma formation
- May require smaller gauge cannulas
- Use of ultrasound-guided techniques may be beneficial for difficult access
Obese Patients:
- Veins may not be easily palpable
- Deep veins may require longer cannulas
- Ultrasound guidance can improve success rates
- Consider alternative sites such as the forearm or antecubital fossa
Dehydrated Patients:
- Veins may be less prominent due to reduced blood volume
- Application of warm packs may help with vasodilation
- Patient may need fluid rehydration before another attempt at cannulation
- Consider slower, more fluid movements when inserting the cannula
7. Documentation
Essential Documentation Elements:
- Date and time of procedure
- Size and type of cannula inserted
- Location of insertion site (specific anatomical description)
- Number of attempts (if applicable)
- Reason for procedure (type of therapy planned)
- Any difficulties or complications encountered
- Verification of patency after insertion
- Patient tolerance of the procedure
- Signature and credentials of the procedure performer
Important Safety Reminders:
- Always follow proper hand hygiene protocols
- Never reuse equipment (no re-capping of needles)
- Dispose of all sharps in designated containers
- Follow universal precautions for blood/body fluids
- Monitor regularly for complications and remove unnecessary cannulas
- Adhere to institutional policies and local guidelines
- Seek assistance from more experienced colleagues when encountering difficulties
This checklist provides a comprehensive framework for safe IV cannulation but should be adapted to specific patient needs and institutional protocols. Regular training and competency updates are essential for healthcare professionals performing IV cannulation.
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Reference Files For Intravenous Cannulation Checklist
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Peripheral Intravenous Cannulation And Blood Sampling and Reference File Download Link
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