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Iohexol and metrizamide for urography in infants and children
Insights
Iohexol, a new non-ionic contrast medium, showed negligible adverse reactions and comparable diagnostic quality to metrizamide in pediatric urography. Both agents caused a slight decrease in hematocrit values.
Area of Science:
- Radiology
- Pediatric Imaging
- Contrast Media
Background:
- Contrast media are essential for diagnostic imaging in children.
- Non-ionic contrast agents are preferred for their safety profile.
- Iohexol is a newer non-ionic agent requiring evaluation.
Purpose of the Study:
- To compare the safety and efficacy of iohexol versus metrizamide in pediatric urography.
- To assess adverse reactions and diagnostic image quality.
Main Methods:
- Double-blind investigation involving 40 children under 6 years of age.
- Administration of iohexol or metrizamide for urography.
- Monitoring for adverse events and evaluating film quality.
Main Results:
- Negligible adverse reactions observed with both contrast media.
- A small, transient decrease in erythrocyte volume fraction (hematocrit) noted in both groups.
- Excellent diagnostic image quality achieved, with no significant difference between iohexol and metrizamide.
Conclusions:
- Iohexol is a safe and effective non-ionic contrast medium for pediatric urography.
- It offers comparable diagnostic performance to metrizamide with minimal side effects.
- Further use of iohexol in pediatric populations is warranted.
Abstract:
The new non-ionic contrast medium iohexol, was compared with metrizamide in a double blind investigation. Urography was performed in 40 children below 6 years of age. Adverse reactions were negligible. A small decrease in erythrocyte volume fraction (hematocrit) values after the injection was found in both groups. Excellent films were obtained in most patients and no difference in diagnostic quality between the two media was observed.
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