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[Riolan's arcade: hemodynamic importance--therapeutic deductions]
Schweizerische Medizinische Wochenschrift
|March 13, 1976
Summary
The arcade of Riolan, an important arterial anastomosis, can cause hemodynamic issues if obstructed or during surgical procedures. Recognizing its significance prevents lethal colonic ischemia and surgical complications.
Area of Science:
- Vascular anatomy
- Surgical anatomy
- Gastrointestinal circulation
Context:
- The arcade of Riolan is an arterial anastomosis connecting the superior and inferior mesenteric arteries.
- Its visibility on arteriography is typically limited unless an obstruction is present or during lower limb revascularization.
- Dilatation or hypertonicity of this arcade presents unique challenges in surgical and interventional settings.
Purpose:
- To analyze the hemodynamic significance of the arcade of Riolan.
- To highlight the clinical implications of its anatomical variations and presentation during surgical interventions.
- To emphasize the necessity of preoperative arteriography in specific patient populations.
Summary:
- The arcade of Riolan, an anastomosis between the superior and inferior mesenteric arteries, is hemodynamically significant.
- A dilated or hypertonic arcade of Riolan can lead to complications, including lethal colonic ischemia if ligated improperly.
- Preoperative identification via arteriography is crucial for patients undergoing rectosigmoid surgery, especially those with arteritis.
Impact:
- Informs surgical planning by identifying potential risks associated with the arcade of Riolan.
- Aids in preventing iatrogenic complications such as left colon necrosis postoperatively.
- Enhances the understanding of splanchnic circulation assessment through arteriographic examination.