Measurement of Iohexol Plasma Clearance in Patients Leaving ICU After Acute Renal Failure

Study Overview
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Brief Summary
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IOXSOR study's purpose to determine the frequency of non resolutive renal failure (estimated by the clearance of iohexol) at end of stay in ICU patients who have had acute renal failure episode.

Official Title
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Measurement of Iohexol Plasma Clearance in Patients Leaving ICU After Acute Renal Failure

Conditions
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Acute Renal Failure

Intervention / Treatment
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* Drug: IOHEXOL


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: ICU stay > 7 days Having presented during the stay renal failure stage 2 or 3 Kidney Disease Improving Global Outcomes (KDIGO) Steady improvement of renal function before the ICU discharge : Creatinine before ICU discharge <110 µmol / L for women, <130 µmol / L for men No recourse to extra renal purification Change in creatinine levels (ΔCréatinine) less than 20% over two measures spaced 24 hours within 48 hours preceding the discharge Expected discharge ICU within 48 hours : Glasgow score > 13 Lack of mechanical ventilation except home Noninvasive Mechanical Ventilation (NiMV) Lack of use of catecholamine No contra-indication for discharge according to physician in charge of the patient Informed consent signed by the patient, where not possible by the person of trust or the family if present. Written consent by the patient will be obtained as soon as deemed possible. Exclusion Criteria: Iohexol administration within 48 hours preceding the potential inclusion (imaging examination with X-ray contrast medium injection) Iohexol administration planned within 24 hours after potential inclusion in the study Known medical history of immediate allergic or delayed skin allergic reaction to injection of iodinated contrast material or any serious doubt on this medical history Patient receiving from extra renal purification during ICU discharge Chronic renal disease known (creatinine> 110 µmol / L for women,> 130 µmol / L for men) or creatinine clearance estimated less than 60 mL / min Pregnancy or breastfeeding women Patient under guardianship or safeguard justice known at the time of inclusion Patient limitation care Person not affiliated or not the beneficiary of a social security scheme

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Diagnostic
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Iohexol plasmatic clearance<br> | Drug: IOHEXOL<br>* Estimate iohexol clearance at the end of stay in intensive care for patients who had an episode of acute renal failure.<br>* Other names: Omnipaque ®;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Frequency of patients with a clearance of iohexol < 60 ml/min/1m273 at the end of ICU hospitalisation. | Iohexol clearance pharmacokinetics | 24 hours | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Correlation between non resolutive renal at the end of ICU (iohexol clearance < 60 ml/min/1m273) and creatinine clearance < 60 ml/min/1m273 at 6 month after ICU. discharge |  | Six month after ICU discharge | 
| Number of risk factors associated with non resolutive among : Age Previous renal function Comorbidities Severity parameters of renal aggression Acute severity of parameters during the ICU hospitalisation |  | 24 hours | 
| Correlation between serum creatinine derived measurements of Glomerular Filtratio Rate and iohexol clearance. |  | 24 hours |