Extravasation risk calculator — mechanical vs hand injection
AI-enhanced · liveInjection parameters
Agent · site · access · delivery conditions
Patient risk factors
AI insight…
Real-time metrics — mechanical injector
Live pressure, flow & risk scoring
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Pressure (psi)
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Flow (mL/s)
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IDR (g I/s)
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Viscosity (mPa·s)
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Duration (s)
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Total iodine (g)
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Bolus consistency
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Extravasation risk
0 · Low2.55 · Moderate7.510 · Severe
Risk score–
Pressure margin–
Status–
Injection profile — mechanical vs hand
Flow, pressure and IDR over the injection · hand curve includes physiologic variability & fatigue
Flow rate profile (mL/s)
Injection pressure profile (psi) — safe zone vs pressure limit
Iodine delivery rate (g I/s)
Mechanical injector
Hand injection
Injector limit
Head-to-head: mechanical vs hand injection
Evidence-based comparison
| Parameter | Mechanical injector | Hand injection | Impact |
|---|---|---|---|
| Flow consistency | Uniform (±2–5%) | Variable (±25–40%) | Mechanical wins — reproducible bolus timing |
| Sustained rate range | 0.5–10 mL/s | ≈1–4 mL/s, declines with fatigue | Hand limited for CTA / cardiac |
| Peak pressure | Steady at limit | Transient spikes & pauses | Hand can dislodge cannula intermittently |
| Dose accuracy | To-the-drop (±1 mL) | Often over-delivers 5–15 mL | Hand ↑ iodine load & waste |
| Extravasation detection | Pressure alarms stop pump | Immediate tactile feedback | Hand wins for early recognition |
| Detection during scan | Not visible until retrieval | N/A (staff present) | Observe first 30–60 s either way |
| Staff exposure | Remote / outside room | Hands-on at cannula | Mechanical ↓ time at the gantry |
| Best suited for | ≥3 mL/s, CTA, cardiac, perfusion | Slow / low-volume, fragile access | Match technique to access & protocol |
Clinical recommendations
Auto-generated from your parameters
If extravasation occurs: stop injection immediately, aspirate residual contrast via the cannula before removal, elevate the limb, apply cold compress for iodinated agents (warm compress for large-volume / osmolar injury per local policy), and document volume & agent. Plastic surgery consult for progressive swelling, blistering, altered perfusion or pain out of proportion. Reference: ACR Manual on Contrast Media (current edition) · ESUR v10 · institutional extravasation protocol.
Estimates only — not a medical device. Viscosity–temperature model is an approximation; use manufacturer data where available. Clinical decisions remain with the treating team.
© SATMED Health · Extravasation module
