1. Interactive IV Site Diagnostic Calculator
Select the options below that match what you or your patient is experiencing at the IV or catheter insertion site:
Interactive Decision Aid
Infiltration vs. Extravasation Bedside Differential Diagnostic Tool
INS 2024 Algorithm
2. Clinical Comparison: Infiltration vs. Extravasation vs. Phlebitis
Understanding the clinical differential diagnosis helps patients and providers identify complications early:
| Clinical Feature | Infiltration (Non-Vesicant) | Extravasation (Vesicant) | Phlebitis (Inflammation) | Catheter-Site Infection |
|---|---|---|---|---|
| Skin Temperature | Cool / Cold to touch | Cool or normal; may progress to burning heat | Warm / Hot to touch | Warm / Hot to touch |
| Skin Color | Blanched / Pale / Translucent | Pale initially; progresses to redness, blistering | Red streak along vein path | Erythematous halo (>1 cm around site) |
| Pain Sensation | Discomfort, tightness, feeling of fullness | Severe burning, stinging, intense ache | Tenderness, aching along vein course | Localized tenderness, throbbing |
| Swelling Morphology | Diffuse edema extending from insertion | Edema, hardening, blistering, sloughing | Slight edema; vein feels cord-like | Purulent drainage, fluctuance |
| Immediate Action | Stop infusion; elevate limb; warm/cold compress | STOP INFUSION IMMEDIATELY; aspirate; notify doctor for antidote | Discontinue IV; apply warm moist compress | Culture exudate; remove catheter; notify MD |