Experimental renal infarcts: angiographic and histologic studies

Area of Science:

• Interventional Radiology
• Nephrology
• Vascular Surgery

Background:

• Renal artery embolization is a common procedure.
• Understanding the effects of different embolic agents is crucial for clinical practice.

Purpose of the Study:

• To compare the efficacy of Gelfoam, Gelfoam/steel coil, and barium suspension in inducing renal infarcts.
• To evaluate the impact of these agents on renal renin output and arteriographic appearance.

Main Methods:

• Renal arteries in three groups of four dogs were occluded using Gelfoam, Gelfoam/steel coil, or barium suspension.
• Renal renin output, arteriographic appearance, and infarct extent were assessed.

Main Results:

• Gelfoam embolization resulted in incomplete infarcts and compensatory hypertrophy.
• Gelfoam/coil combination led to more extensive infarcts than Gelfoam alone.
• Barium suspension produced the most diffuse and extensive renal infarcts.
• Renal vein plasma renin levels were significantly elevated in Gelfoam/coil group.

Conclusions:

• Different embolic agents have varying effects on renal infarct size and renin production.
• Barium suspension is most effective for inducing extensive renal infarction.
• Gelfoam/coil embolization can significantly increase renal renin levels.