Related Experiment Videos
An experimental hemodynamic study of the pelvic collateral circulation
K Takebe1, H Uchida, S Teramoto
1Second Department of Surgery, Okayama University Medical School, Japan.
Acta Medica Okayama
|February 1, 1994
Summary
Pelvic blood flow is reduced by iliac artery occlusion, especially during exercise. This "steal" phenomenon in pelvic collateral circulation may explain ischemia, potentially negating the need for internal iliac artery reconstruction.
Area of Science:
- Vascular Surgery
- Hemodynamics
- Pelvic Anatomy
Background:
- Aorto-iliac occlusive disease can compromise pelvic blood flow.
- Understanding pelvic hemodynamics is crucial for surgical decision-making.
- Collateral circulation plays a vital role in maintaining blood supply.
Purpose of the Study:
- To investigate pelvic hemodynamics following iliac artery occlusion in a canine model.
- To identify the 'steal' phenomenon in pelvic collateral circulation.
- To inform surgical strategies for aorto-iliac occlusive disease.
Main Methods:
- Unilateral common iliac artery occlusion was performed in adult mongrel dogs.
- Pelvic blood flow was measured under resting and exercise conditions.
- Hemodynamic changes were analyzed to identify the 'steal' phenomenon.
Main Results:
- Iliac artery occlusion significantly reduced pelvic blood flow compared to anatomical hemodynamics.
- Blood flow reduction was more pronounced under exercise loading.
- Evidence of a 'steal' phenomenon was observed in the pelvic collateral circulation.
Conclusions:
- The 'steal' phenomenon, occurring in series-related arterial systems, impacts pelvic hemodynamics.
- Pelvic ischemia in aorto-iliac occlusive disease may result from decreased flow or the 'steal' phenomenon.
- Reconstruction of pelvic blood vessels may not be necessary if ischemia is due to the 'steal' phenomenon.