# AI fails to flag contrast-induced nephropathy risk for a patient with eGFR <30 mL/min/1.73m² scheduled for CT with IV iodinated contrast

- **ID:** `medical/contrast-induced-nephropathy-missed`
- **Domain:** medical
- **Category:** data_error
- **Error Code:** `CIN-RISK-01`
- **Verification:** ai_generated
- **Fix Rate:** 82%

## Root Cause

The AI model omitted a mandatory renal function check before contrast administration, ignoring the KDIGO guideline that requires eGFR assessment within 7 days and alternative imaging or prophylaxis for patients with eGFR <30.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| Radiology Information System v5.2.1 | active | — | — |
| Epic Radiant 2024 | active | — | — |
| DICOM Conformance Statement 3.0 | active | — | — |

## Workarounds

1. **Check eGFR within 7 days prior to contrast; if eGFR <30, order non-contrast MRI or ultrasound instead of CT. Document in EHR: 'CIN risk - alternative imaging selected.'** (95% success)
   ```
   Check eGFR within 7 days prior to contrast; if eGFR <30, order non-contrast MRI or ultrasound instead of CT. Document in EHR: 'CIN risk - alternative imaging selected.'
   ```
2. **If contrast is unavoidable (e.g., for acute pulmonary embolism), pre-administer 0.9% saline 1 mL/kg/h for 12 hours, use iso-osmolar contrast (iodixanol), and schedule post-procedure hemodialysis if eGFR <15. Implement in order set: 'CONTRAST-CIN-PROTOCOL'.** (80% success)
   ```
   If contrast is unavoidable (e.g., for acute pulmonary embolism), pre-administer 0.9% saline 1 mL/kg/h for 12 hours, use iso-osmolar contrast (iodixanol), and schedule post-procedure hemodialysis if eGFR <15. Implement in order set: 'CONTRAST-CIN-PROTOCOL'.
   ```
3. **Integrate a CDS (Clinical Decision Support) rule into the CPOE system: if contrast order AND eGFR <30, block order and display: 'eGFR <30: CIN risk. Alternative imaging required. Contact radiology.'** (90% success)
   ```
   Integrate a CDS (Clinical Decision Support) rule into the CPOE system: if contrast order AND eGFR <30, block order and display: 'eGFR <30: CIN risk. Alternative imaging required. Contact radiology.'
   ```

## Dead Ends

- **** — In patients with severe renal impairment (eGFR <30), standard saline hydration is insufficient to prevent CIN without withholding contrast entirely or using iso-osmolar contrast agents. (65% fail)
- **** — Multiple large RCTs (e.g., ACT trial) have shown N-acetylcysteine provides no benefit over placebo for preventing CIN in high-risk patients. (90% fail)
- **** — Even low-volume contrast can cause nephropathy in eGFR <30 patients; the only safe approach is alternative imaging (MRI, ultrasound) or hemodialysis planning. (70% fail)