- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04603261
Time to Excretion of Contrast, a Maastricht Prospective Observational Study (TEMPOS)
Study Overview
Status
Intervention / Treatment
Detailed Description
Study Type
Contacts and Locations
Study Locations
-
-
-
Maastricht, Netherlands
- Maastricht UMC
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Sampling Method
Study Population
Description
Inclusion Criteria:
- eGFR <30 mL/min/1.73m2 in absence of dialysis referred for an elective procedure with intravascular administration of iodinated contrast material at Maastricht UMC+
For each included patient with eGFR <30 mL/min/1.73m2, two matched patients will be included:
- 1. eGFR 30-59 mL/min/1.73m2 referred for an elective procedure with intravascular administration of iodinated contrast material at Maastricht UMC+ with age, sex and contrast procedure type matching the age, sex and contrast procedure type of an eGFR <30 mL/min/1.73m2 participant.
- 2. eGFR >=60 mL/min/1.73m2 referred for an elective procedure with intravascular administration of iodinated contrast material at Maastricht UMC+ with age, sex and contrast procedure type matching the age, sex and contrast procedure type of an eGFR <30 mL/min/1.73m2 participant.
Exclusion Criteria:
- age <18 years
- dialysis or pre-dialysis
- intravascular contrast administration having occurred <30 days before the first baseline sample
- emergency or intensive care status.
Study Plan
How is the study designed?
Design Details
- Observational Models: Cohort
- Time Perspectives: Prospective
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
eGFR <30 mL/min/1.73m2
Patients with eGFR <30 mL/min/1.73m2 in absence of dialysis referred for an elective procedure with intravascular administration of iodinated contrast material at Maastricht UMC+.
|
Iodinated contrast content of urine samples, collected post-contrast over a period of 5 days at all times of natural excretion within that period, will be assayed. Serum creatinine will be measured daily before (day 0) and during 5 days post-contrast, and again at 1 month post-contrast. |
eGFR 30-59 mL/min/1.73m2
For each included patient with eGFR <30 mL/min/1.73m2,
two patients matched for age, sex and contrast procedure type will be included: one with eGFR 30-59 mL/min/1.73m2
and one with eGFR >=60 mL/min/1.73m2.
|
Iodinated contrast content of urine samples, collected post-contrast over a period of 5 days at all times of natural excretion within that period, will be assayed. Serum creatinine will be measured daily before (day 0) and during 5 days post-contrast, and again at 1 month post-contrast. |
eGFR >=60 mL/min/1.73m2
For each included patient with eGFR <30 mL/min/1.73m2,
two patients matched for age, sex and contrast procedure type will be included: one with eGFR 30-59 mL/min/1.73m2
and one with eGFR >=60 mL/min/1.73m2.
|
Iodinated contrast content of urine samples, collected post-contrast over a period of 5 days at all times of natural excretion within that period, will be assayed. Serum creatinine will be measured daily before (day 0) and during 5 days post-contrast, and again at 1 month post-contrast. |
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
time to contrast-free urine.
Time Frame: 5 days
|
time to the first contrast-free urine sample from the time of intravascular iodinated contrast administration.
Time to contrast-free urine will be compared between three groups of patients (with eGFR <30 mL/min/1.73m2,
eGFR 30-59 mL/min/1.73m2,
and eGFR >=60 mL/min/1.73m2).
|
5 days
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
% contrast elimination.
Time Frame: 5 days
|
percentage of total contrast administered excreted in urine within 5 days.
Percentage contrast elimination will be compared between three groups of patients (with eGFR <30 mL/min/1.73m2,
eGFR 30-59 mL/min/1.73m2,
and eGFR >=60 mL/min/1.73m2).
|
5 days
|
contrast elimination versus adverse post-contrast outcomes.
Time Frame: 1 month
|
The underlying hypothesis is that delayed elimination increases contrast toxicity which increases adverse event risk. This will be explored by comparing percentages with post-contrast adverse events (acute kidney injury; changes in eGFR; eGFR decline ≥5mL/min/1.73m2; dialysis; mortality; up to 1-month) in groups with and without delayed elimination, stratified by eGFR (<30, 30-59, ≥60). Relevant patient and procedural characteristics will also be compared to identify potential predictors of delayed elimination. Contrast elimination times are unknown, therefore 'delayed' is defined as time to contrast-free urine exceeding patient group median value. In clinical practice, normal contrast elimination is assumed to be ≥24h. Therefore, 1. Normal (≤24h); 2. Delayed (24-48h); 3. Severely delayed (>48h) elimination subgroups will also be compared. Subgroup cut-off values may be added at a later stage (e.g., in the event of many or no patients with elimination >48h). |
1 month
|
Collaborators and Investigators
Study record dates
Study Major Dates
Study Start (Estimated)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- NL.MUMC.AMACINGrp.2
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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