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Summary
Ionic contrast media like metrizoate can harm kidney function during renal angiography. Nonionic iohexol offers a safer alternative, preserving renal function and reducing patient discomfort without compromising angiogram quality.
Area of Science:
- Nephrology
- Radiology
- Pharmacology
Background:
- Ionic contrast media, such as metrizoate, have been associated with potential nephrotoxicity.
- Assessing the renal safety of different contrast agents is crucial for patient care during diagnostic imaging procedures.
Purpose of the Study:
- To compare the nephrotoxicity of the ionic contrast medium metrizoate with the nonionic contrast medium iohexol during renal angiography.
- To evaluate the impact of these contrast agents on renal function and patient-reported outcomes.
Main Methods:
- A comparative study involving 30 patients undergoing renal angiography.
- Fifteen patients received metrizoate, and 15 received iohexol.
- Renal function was assessed by measuring serum creatinine levels, Cr-51-EDTA clearance, and urine albumin levels before and after the procedure.
Main Results:
- Metrizoate administration resulted in a transient decrease in glomerular filtration rate and transient albuminuria, indicating adverse effects on renal function.
- Iohexol did not affect renal function in the studied patients.
- Patients reported less subjective discomfort with iohexol compared to metrizoate.
- Angiogram quality was comparable between the two contrast media.
Conclusions:
- Nonionic iohexol is a safer contrast medium for renal angiography compared to ionic metrizoate, as it does not impair renal function.
- Iohexol offers improved patient comfort and comparable diagnostic imaging quality, making it a preferred choice for renal angiography.