IV Site Complications: Infiltration, Extravasation, and Phlebitis for Nursing Students

The three most common IV site complications each have distinct mechanisms: 1. Infiltration: IV fluid leaks from the vein into surrounding tissue. The fluid is typically NOT vesicant (non-irritating). Caused by: catheter displacement, vein wall damage, or failure of the catheter to be properly seated in the vein. 2. Extravasation: IV fluid leaks into surrounding tissue, AND the fluid is a vesicant (causes tissue damage). Extravasation is technically a subtype of infiltration, but with vesicant medications (chemotherapy, vasopressors, hypertonic solutions) the damage is more severe and requires specific treatment protocols. 3. Phlebitis: Inflammation of the vein itself, with or without infection. Caused by: mechanical irritation (catheter movement), chemical irritation (IV solutions pH/osmolarity), or bacterial contamination. Presentation distinguishing features: Infiltration: - Swelling around IV site - Coolness to touch (fluid in subcutaneous tissue reduces warmth) - Pale or blanched appearance - Taut skin - Fluid not flowing freely - Minimal to no pain initially - Usually not erythematous (not red) unless irritating solution Extravasation: - Same signs as infiltration - PLUS: severe pain, burning at site - Tissue damage visible (blistering, necrosis develops) - Skin may discolor (red, purple, or black) - Requires urgent intervention to prevent permanent damage Phlebitis: - Redness (erythema) along the vein line - Warmth and tenderness - Pain at site - Palpable cord (vein feels firm like a cord) - Sometimes pus or discharge (if infected) - Fluid still flowing (vein not blocked) Severity grading: Infiltration (Infusion Nurses Society Grading): - Grade 0: no symptoms - Grade 1: skin blanched, edema <1 inch, cool, with or without pain - Grade 2: skin blanched, edema 1-6 inches, cool, with or without pain - Grade 3: skin blanched, translucent, edema >6 inches, cool, moderate to severe pain, numbness - Grade 4: skin blanched, translucent, gross edema >6 inches, cool, deep pitting edema, circulatory impairment, moderate to severe pain Phlebitis (Visual Infusion Phlebitis Scale): - Score 0: no signs of phlebitis - Score 1: one of: pain, erythema, swelling - Score 2: two of: pain, erythema, swelling - Score 3: pain, erythema, swelling, induration - Score 4: pain, erythema, swelling, induration, palpable venous cord ≥1 inch - Score 5: pain, erythema, swelling, induration, palpable venous cord >1 inch, purulent drainage, fever This content is for educational purposes only and supports nursing student learning.

Infiltration occurs in up to 20-25% of peripheral IVs during their lifetime. Most infiltrations are mild (grade 1), but severe infiltrations can cause tissue damage even with non-vesicant solutions due to pressure effects. Risk factors: - Small or fragile veins (elderly, children, chronically ill) - Catheter tip at or near a joint (movement pulls catheter) - Prolonged catheter dwell time (>72 hours) - High infusion rate - Repeated use of same vein - Multiple venipunctures at same site - Inexperienced IV placement - Patient movement - Older, brittle veins (IV drug use history) - Certain conditions (diabetes with neuropathy, vascular disease) Clinical presentation: Early signs (hour 1-2): - Slight swelling around IV site - Tightness feeling - Mild discomfort - Fluid still flowing but slowing Progressive signs (hours 2-6): - Increasing edema (diameter increases) - Cool to touch (fluid in subcutaneous tissue) - Pale or blanched appearance - Pain with increased pressure - Extremity feeling heavy - Fluid flow stops or becomes very slow Severe signs: - Marked swelling (often 3-6+ inches) - Intense pain - Numbness or tingling (nerve compression) - Compartment syndrome if severe - Skin tight and shiny Assessment technique: - Palpate along the vein path for fullness (sign of extravasated fluid) - Compare to opposite extremity for size - Measure edema diameter - Assess coolness vs warmth - Check fluid flow (may be stopped or reduced) - Evaluate for pain on palpation - Note any distal signs (coolness, decreased pulse, color changes) Immediate management: 1. Stop the infusion immediately 2. Do NOT pull the catheter until you've aspirated any remaining fluid 3. Aspirate any remaining fluid from the catheter before removal 4. Remove the catheter 5. Elevate the extremity 6. Apply appropriate dressing 7. Continue monitoring Elevation improves drainage and reduces edema by gravity. Elevate the limb above heart level for 30-60 minutes. Warm vs cold compresses: - Warm compresses: for non-vesicant infiltrations (accelerates absorption) - Cold compresses: for vesicant extravasations (slows tissue damage by vasoconstriction) Contraindication: never use warm compresses for suspected extravasation of vesicant medications — cold is preferred to limit tissue damage. Monitoring after removal: - Check extremity every 15-30 minutes for 1-2 hours - Check every hour for 4-6 hours - Check every 4 hours for 24 hours - Document findings (size, color, pain level, nursing interventions) When to escalate: - Severe pain (>7/10) - Circulatory compromise (decreased pulse, coolness, color changes) - Signs of compartment syndrome (severe pain disproportionate to exam, paresthesias) - Evidence of tissue necrosis - Large edema size (>6 inches) - Multiple complications Documentation requirements: - Time of infiltration detection - Estimated time of onset - Size and location of affected area - Degree of edema - Color and temperature of skin - Pain level (0-10 scale) - Name of infusing solution/medication - Volume of solution infused - Nursing interventions - Physician notification (if required) - Ongoing monitoring assessments

Extravasation is infiltration of a vesicant (tissue-damaging) solution. Common vesicant medications include: Chemotherapy drugs: - Doxorubicin, daunorubicin (extremely damaging) - Vincristine, vinblastine - Paclitaxel - Carmustine - Many others Vasopressors: - Norepinephrine - Phenylephrine - Epinephrine - Dopamine (high-dose) Hypertonic solutions: - 3% saline - Hypertonic dextrose (25% or higher) - Parenteral nutrition (PN) - Calcium gluconate (10% or higher) Radiocontrast agents: - Some iodinated contrast media Other: - Potassium chloride (some concentrations) - Promethazine (Phenergan) - Certain antibiotics - Digoxin Mechanism of tissue damage: - Direct cytotoxic effects on cells - Vasoconstriction (vasopressors) - Osmotic damage (hypertonic solutions) - Acid or base damage (pH-related) - Cell membrane disruption Clinical presentation (differs from infiltration): - SEVERE PAIN at site (often burning, tearing) - Rapid tissue damage visible (blistering, skin discoloration) - Pain disproportionate to visible signs initially - Patient may describe burning sensation - Skin may turn red, purple, then black as necrosis progresses - Demarcation may take 24-48 hours to become apparent Rapid response protocol: 1. STOP the infusion IMMEDIATELY. 2. Do NOT remove the catheter yet: - Attempt to aspirate any remaining medication - Use 10-20 mL syringe to aspirate through the catheter - This may remove some of the extravasated drug 3. Elevate the affected extremity. 4. Apply COLD compresses (for most vesicants): - Cold slows tissue damage by vasoconstriction - Limits spread of the drug - Apply 20 minutes on, 20 minutes off - EXCEPTIONS (use warm for these): - Vinca alkaloids (vincristine, vinblastine) - Etoposide (VP-16) - Oxaliplatin - These require WARM compresses to enhance drug dispersion 5. Specific antidotes (depending on drug): - Anthracyclines (doxorubicin): Dexrazoxane IV (within 6 hours) - Vinca alkaloids: Hyaluronidase SQ around site - Vasopressors: Phentolamine SQ injections - Calcium: Warm compress, no specific antidote 6. Physician notification: always. Extravasation of vesicants is a documented medical event. 7. Mark the area: outline the extent of extravasation with a marker. This helps track progression. 8. Photography: if allowed by facility policy, photograph the site for documentation. 9. Consider plastic surgery consultation: for severe extravasations, especially chemotherapy. 10. Ongoing monitoring: check every 1-2 hours initially, then every 4-8 hours. Long-term consequences: - Small extravasations: may resolve with local wound care - Moderate extravasations: may require debridement of necrotic tissue - Severe extravasations: may result in skin grafting, scar formation, functional impairment - Catastrophic extravasations: can cause compartment syndrome, amputation (rare but documented) Prevention is key: - Double-check IV patency before administering vesicants - Choose appropriate catheter size and site - Use a fresh IV for vesicants when possible - Monitor frequently during infusion - Administer through a CVC (central venous catheter) for high-risk vesicants - Educate patient about reporting pain immediately - Use infusion pumps with occlusion alarms Documentation (extensive for extravasation): - Time of discovery - Estimated time of onset - Time of last assessment that was normal - Vesicant identification (drug name, concentration, rate) - Volume infused at time of extravasation - Size of affected area - Physical signs (blisters, discoloration) - Pain assessment (severity, quality, location) - All interventions performed - Specific antidotes administered - Physician name contacted - Plastic surgery consultation if obtained - Patient teaching performed - Follow-up plan

Phlebitis is inflammation of the vein, with or without infection. It's categorized by cause: 1. Mechanical phlebitis: caused by catheter movement, large catheter in small vein, poorly secured catheter. 2. Chemical phlebitis: caused by IV fluid pH, osmolarity, or drug irritation. 3. Bacterial phlebitis: caused by catheter contamination or prolonged catheter use. Risk factors: For mechanical phlebitis: - Large-gauge catheter in small vein - Poorly secured catheter - Prolonged dwell time (>72 hours) - Catheter at joint - Patient movement - Multiple catheter passes at same site For chemical phlebitis: - Hypertonic solutions (PN, 3% NaCl) - Very acidic or basic medications - High-dose potassium - Some antibiotics (erythromycin, vancomycin) - Some chemotherapy drugs For bacterial phlebitis: - Poor insertion technique - Prolonged dwell time - Immunocompromised patient - Diabetes - Chronic illness - Repeated manipulation of site Clinical presentation: Early phlebitis: - Erythema (redness) at or around IV site - Mild warmth to touch - Slight tenderness - Slight increase in temperature (if infection) Progressing phlebitis: - Erythema extends along vein - Vein becomes palpable as a firm 'cord' (palpable venous cord) - Warmth and tenderness increase - Induration (hardening) develops - Swelling may appear - Pus or discharge possible (bacterial phlebitis) - Fever possible - Systemic signs (chills, malaise) Severe phlebitis: - Extensive erythema along vein - Palpable cord >1 inch - Severe pain - Purulent drainage - Systemic symptoms - Possible cellulitis VIP (Visual Infusion Phlebitis) scale: - 0: no signs - 1: one of: pain, erythema, swelling (observe, may need to change IV) - 2: two of: pain, erythema, swelling (suspect phlebitis; change IV) - 3: all three + induration (moderate phlebitis; change IV; initiate treatment) - 4: all three + induration + palpable cord ≥1 inch (advanced phlebitis; urgent change) - 5: all three + palpable cord >1 inch + purulent drainage + fever (severe; possible infection) Management: Immediate action (at all severity levels): 1. Remove the IV catheter 2. Apply warm compresses to the affected area (promotes vasodilation, drainage) 3. Elevate the extremity (reduces edema) 4. Document findings For mild-moderate phlebitis (VIP 1-2): - Remove IV - Warm compresses 4 times daily - Apply antibiotic ointment if prescribed - Monitor 24-48 hours for improvement For moderate-severe phlebitis (VIP 3-4): - Remove IV - Warm compresses 4 times daily - Notify physician - Anti-inflammatory medication if prescribed - Monitor every 4-8 hours - Repeat assessment at 24 hours For severe/purulent phlebitis (VIP 5): - Remove IV; send for culture if possible - Apply warm compresses - Notify physician immediately - Blood culture if febrile - IV antibiotics if indicated - Surgical consultation if abscess forms - Monitor vital signs Prevention: - Use smallest appropriate catheter for the vein - Secure catheter with proper technique - Change IV site every 72-96 hours (or per facility policy) - Proper hand hygiene and sterile technique - Use site that minimizes movement - Monitor site every 8 hours during IV therapy - Educate patient about reporting pain or discomfort - Use IV pump to ensure proper flow rate Patient education: - Signs to report: pain, redness, swelling, warmth, drainage, fever - Importance of not removing IV yourself - Not touching IV site excessively - Keeping area clean and dry - When to call for help

Preventing IV site complications is more effective and less traumatic than treating them. Key strategies: 1. Proper catheter selection: - Smallest gauge that meets clinical needs - Fine veins: 22-24G - Average adult: 20-22G for fluids; 18G for blood or rapid infusion - Pediatric: 22-24G - Elderly: 22-24G (fragile veins) 2. Optimal insertion site: - Forearm veins preferred to hand veins (more stable) - Non-dominant side when possible - Avoid areas of flexion (antecubital) unless necessary - Avoid previously used sites until fully healed - Avoid bruised or scarred areas - For vesicants: use forearm if possible (larger veins, slower flow) 3. Insertion technique: - Proper site selection and vein assessment - Good lighting - Patient positioning for comfort - Sterile technique - Tourniquet placement (not too tight, not too loose) - Adequate angle (typically 15-30 degrees) - Observe for flashback - Don't advance catheter once blood returns - Secure catheter before removing needle 4. Fluid and medication appropriateness: - Verify IV fluid compatibility - Check medication reconstitution and concentration - Use central line for high-osmolarity solutions - Use central line for most vasopressors - Follow dilution guidelines - Monitor infusion rates 5. Monitoring: - Initial assessment at insertion - Every 4 hours for stable patients - Every 2 hours for post-op or unstable patients - Every hour for vesicant infusions - Assess at each medication administration - Check patency before medication 6. Site rotation: - Peripheral IV: typically change every 72-96 hours - Some facilities: change only when indicated (TJC guidance) - Immediately for complications - Fresh site for each vesicant administration (if possible) 7. Patient education: - Purpose of IV - Signs/symptoms to report - What NOT to do (don't push on site, don't remove dressing) - Movement restrictions - When to call for help - Expected duration of IV therapy 8. Documentation: - Initial IV insertion: date/time, site, catheter size, flow rate, solution, volume - Routine monitoring: time, assessment findings, interventions, patient response - Complications: detailed as discussed above - Discontinuation: date/time, site assessment, reason for removal, patient response Quality indicators and standards: Infusion Nurses Society (INS) standards recommend: - Site assessment every 4 hours - Phlebitis rate <5% (acceptable benchmark) - Infiltration rate <10% (acceptable benchmark) National Institute for Health and Care Excellence (UK) guidance: - Routine catheter change not recommended for adults - Change only when clinically indicated - Monitor for complications continuously Joint Commission standards: - Document patient education - Follow standardized protocols - Report significant complications - Participate in continuous quality improvement Common nursing errors to avoid: 1. Rushing IV assessments (missing early signs) 2. Not checking for patency before each medication 3. Selecting veins in mobile areas (joints) 4. Not documenting assessment findings 5. Not using appropriate dressings 6. Forgetting to flush between medications 7. Using same IV for multiple incompatible medications 8. Ignoring patient reports of pain or discomfort 9. Not educating patients about signs to report 10. Not escalating when findings change