Carbon dioxide (CO2) angiography in children

Area of Science:

• Medical Imaging
• Vascular Interventions
• Pediatric Nephrology

Background:

• Iodinated contrast material poses risks like nephrotoxicity and allergic reactions.
• Carbon dioxide (CO2) gas angiography offers an alternative for digital subtraction angiography when contrast is contraindicated.
• Previous reports on CO2 angiography have focused on adults, with limited data in pediatric populations.

Purpose of the Study:

• To report the first use of CO2 angiography in children.
• To evaluate the efficacy of CO2 angiography in pediatric renal transplant patients.
• To assess CO2 angiography for visualizing renal artery anastomosis and detecting stenosis.

Main Methods:

• Three pediatric patients with renal transplants underwent CO2 angiography due to elevated creatinine levels.
• CO2 gas was injected intravascularly to perform digital subtraction angiography.
• The primary focus was to evaluate the renal artery anastomosis for potential stenosis.

Main Results:

• CO2 angiography successfully visualized the renal artery anastomosis in all three pediatric patients.
• No evidence of renal artery stenosis was detected in any of the cases.
• The technique provided high-quality digital subtraction angiograms.

Conclusions:

• Digital CO2 angiography is an effective and safe imaging modality for pediatric renal angiography.
• The technique is adaptable to standard angiographic laboratories.
• CO2 angiography eliminates the risks associated with iodinated contrast media in pediatric patients.