Introduction

An intravenous (IV) catheter is a small, flexible tube inserted into a vein to provide direct access to the bloodstream. This medical device allows healthcare providers to administer medications, fluids, blood products, and nutrients efficiently. IV catheters are among the most commonly used medical devices in hospitals, with millions inserted each year worldwide.

In pediatric care, IV catheters require special consideration due to smaller vein sizes, different gauge requirements, and the need for gentle handling. This guide provides comprehensive information for parents, caregivers, and healthcare professionals about IV catheters, their use, and safety measures.

Purpose and Medical Uses

IV catheters serve several critical medical purposes:

• Medication Administration: Direct delivery of antibiotics, pain medications, chemotherapy, and other drugs into the bloodstream for immediate effect
• Fluid Replacement: Treatment of dehydration, maintenance of hydration during surgery, and emergency fluid resuscitation
• Blood Transfusions: Safe administration of blood products when needed
• Nutrition Support: Delivery of parenteral nutrition when oral feeding is not possible
• Diagnostic Testing: Collection of blood samples for laboratory analysis
• Contrast Media: Administration of contrast agents for imaging procedures like CT scans and MRI

Common Settings for IV Use

• Hospital emergency departments
• Operating rooms during surgery
• Intensive care units
• General medical and pediatric wards
• Outpatient clinics for chemotherapy or infusion therapy
• Ambulances and pre-hospital emergency care

Types of IV Catheters

Peripheral Intravenous Catheters

Peripheral IV catheters are the most common type, inserted into small veins in the arms, hands, or (in infants) the scalp or feet. These are short-term catheters typically used for several days.

Central Venous Catheters

Central lines are inserted into larger veins (internal jugular, subclavian, or femoral veins) and are used for long-term therapy or when peripheral access is difficult. These require specialized insertion techniques.

Midline Catheters

These are longer than peripheral IVs but shorter than central lines, inserted into the upper arm veins and extending to the level just below the armpit. They can remain in place for several weeks.

How to Use: Step-by-Step Guide

IV catheter insertion should only be performed by trained healthcare professionals. This section is for educational purposes to help patients and caregivers understand the process.

Preparation Phase

1. Perform hand hygiene and gather necessary supplies: IV catheter, tourniquet, antiseptic solution, sterile gloves, transparent dressing, normal saline flush, IV tubing or saline lock
2. Verify patient identity and explain the procedure to reduce anxiety, especially important in pediatric patients
3. Select appropriate catheter size based on patient age, vein size, and therapy requirements
4. Position the patient comfortably with the selected limb supported and accessible

Insertion Procedure

1. Apply tourniquet 10-15 cm above the intended insertion site to make veins more visible. Check for pulse below tourniquet
2. Select the best vein by visual inspection and palpation. Preferred sites include dorsal hand veins, cephalic vein, or basilic vein. In infants, scalp veins may be used
3. Release tourniquet temporarily and clean hands, then apply clean gloves
4. Clean insertion site with antiseptic solution in circular motion from center outward. Allow to dry completely
5. Reapply tourniquet and stabilize the vein by holding skin taut below insertion point
6. Insert catheter at 10-30 degree angle with bevel facing upward. For deeper veins, use 30-45 degree angle; for superficial veins, use 10-25 degree angle
7. Watch for blood flashback in the catheter chamber indicating successful vein entry
8. Once flashback appears, lower the angle and advance the entire unit 2-3mm to ensure catheter tip is in the vein
9. Advance only the plastic catheter forward while holding the needle steady, sliding the catheter completely into the vein
10. Release tourniquet immediately
11. Apply gentle pressure above the catheter tip through the skin to prevent blood spillage
12. Activate safety mechanism to retract the needle and dispose in sharps container

Securing the Catheter

1. Attach the primed IV tubing or saline lock to the catheter hub
2. Flush with 3-5 ml of normal saline to confirm patency and proper placement. Watch for signs of infiltration like swelling or pain
3. Clean the area around insertion site and apply transparent sterile dressing
4. Secure IV tubing with additional tape to prevent accidental dislodgement
5. Label the dressing with date, time, catheter size, and inserter initials
6. In pediatric patients, consider using arm board or splint to immobilize joint above insertion site while keeping insertion site and fingers/toes visible

Precautions and Safety Measures

General Precautions

• Always use aseptic technique during insertion and maintenance to prevent infection
• Select the smallest gauge catheter that meets therapy requirements to minimize vein trauma
• Avoid inserting catheters over joints when possible as movement can cause kinking and discomfort
• Do not insert IV in areas with infection, burns, injury, or previous infiltration
• Avoid lower extremity insertion when possible due to higher risk of complications
• For pediatric patients, preserve veins suitable for long-term access like antecubital veins when possible

Monitoring Requirements

• Assess IV site at least every 4 hours in hospital settings, more frequently with high-risk medications
• Check for signs of complications: redness, swelling, pain, warmth, coolness, or leaking
• Verify blood return and easy flushing before each medication administration
• Monitor infusion rate and ensure IV fluids are flowing properly
• Keep insertion site and surrounding area visible for inspection

Infection Prevention

• Maintain hand hygiene before and after touching IV site or equipment
• Keep dressing clean, dry, and intact at all times
• Do not submerge IV site in water during bathing; use protective covering
• Replace dressing if it becomes wet, soiled, or loose
• Scrub injection ports for 15 seconds with antiseptic before each use
• Use closed IV system whenever possible

Potential Complications

Infiltration

Occurs when IV fluid leaks into surrounding tissue instead of staying in the vein.

Signs: Swelling, coolness to touch, pain or discomfort, slowed IV drip rate, skin appears pale or tight.

Action: Stop infusion immediately, remove catheter, elevate affected limb, apply warm or cool compress as appropriate.

Extravasation

Similar to infiltration but involves vesicant medications that can cause severe tissue damage.

Signs: Severe pain, swelling, redness, blistering, tissue necrosis if untreated.

Action: Stop infusion immediately, do not remove catheter, aspirate remaining medication, notify physician urgently, administer antidote if available per protocol.

Phlebitis

Inflammation of the vein wall caused by mechanical irritation, chemical irritation from medications, or infection.

Signs: Pain along vein, redness, warmth, hardened vein, red streak extending from site.

Action: Remove catheter, elevate extremity, apply warm moist compresses, document and report.

Infection

Can occur at insertion site or progress to bloodstream infection if bacteria enter through catheter.

Signs: Redness, warmth, pus or drainage at site, fever, chills.

Action: Remove catheter, clean site, culture if drainage present, notify physician, monitor for systemic infection.

Hematoma

Blood accumulation under skin, usually from vein puncture during insertion or after removal.

Signs: Bruising, swelling, tenderness at site.

Action: Apply pressure, monitor size, use cold compress initially then warm compress after 24 hours.

Air Embolism

Air enters bloodstream through IV line, rare but potentially serious.

Prevention: Remove all air bubbles from tubing before connecting, ensure connections are secure, never leave IV line open to air.

Device Maintenance and Care

Daily Care

• Inspect IV site visually and by palpation at least every 4 hours or before each medication
• Ensure dressing remains clean, dry, and intact
• Keep IV site elevated when possible to promote drainage and reduce swelling
• Flush saline locks with 3-5 ml normal saline before and after medication administration
• Check that all connections are secure to prevent disconnection or contamination

Dressing Changes

• Transparent dressings should be changed every 7 days or when soiled, loose, or damp
• Use aseptic technique during dressing changes
• Assess site during each dressing change for signs of complications
• Document dressing changes with date and any observations

Catheter Replacement

• Peripheral IV catheters should be removed when clinically indicated rather than on a routine schedule
• Clinical indications for removal include: completed therapy, signs of complications, catheter malfunction, patient discharge
• In immunocompromised patients, consider replacing catheters every 72-96 hours based on clinical judgment
• If inserted under non-sterile emergency conditions, replace within 24-48 hours
• Remove catheter promptly when no longer needed to reduce infection risk

IV Tubing Replacement

• Standard IV tubing: Replace every 72-96 hours
• Blood product tubing: Replace after each unit or every 4 hours during continuous infusion
• Parenteral nutrition tubing: Replace every 24 hours
• Tubing for propofol or lipid emulsions: Replace every 6-12 hours

Frequently Asked Questions

How to Keep the Device Safe

For Patients and Caregivers

• Never touch or adjust the catheter or dressing without healthcare provider instruction
• Report any pain, swelling, redness, or unusual symptoms immediately
• Keep the IV site clean and dry at all times
• Protect the IV during sleep by positioning the arm carefully, consider using soft restraints for young children to prevent pulling
• Avoid wearing tight clothing or jewelry near the IV site
• Do not allow pulling, tugging, or stress on the IV line
• Keep IV bag or pump at appropriate height as instructed
• For children, explain the importance of not touching or playing with the IV in age-appropriate terms

Safe Storage and Handling of Supplies

• Store IV supplies in clean, dry area away from direct sunlight
• Check expiration dates on all supplies before use
• Never use damaged or compromised sterile packaging
• Keep IV solutions at room temperature unless otherwise specified
• Dispose of used catheters and needles in puncture-resistant sharps containers
• Follow local regulations for medical waste disposal

Emergency Preparedness

Additional Important Information

Special Considerations for Different Age Groups

Neonates and Infants: Require smallest gauge catheters, scalp veins often used, extra securing needed, frequent monitoring essential.

Toddlers and Young Children: May require gentle restraint during insertion, distraction techniques helpful, arm boards commonly used, parental presence beneficial.

Adolescents: Can use adult-sized catheters, benefit from clear explanations, privacy considerations important.

Elderly Patients: Fragile veins require smaller gauges, skin tears more easily, extra care during tape removal needed.

Documentation

Healthcare providers should document the following:

• Date and time of insertion
• Catheter size and location
• Number of attempts and inserter identification
• Patient response to procedure
• Assessment findings at each shift
• Date and reason for removal
• Catheter tip integrity upon removal

Patient Education Resources

For additional information, consult the following resources:

• Infusion Nurses Society Standards of Practice
• Centers for Disease Control and Prevention Guidelines for Prevention of Intravascular Catheter-Related Infections
• World Health Organization Guidelines on Hand Hygiene in Healthcare
• Your healthcare facility's patient education materials
• Pediatric nursing textbooks for detailed insertion techniques