Aneurysms distribution

Raghavan, M. L., Vorp, D. A., Federle, M. P., Makaroun, M. S., and Webster, M. W. (2000), Wall stress distribution on three-dimensionally reconstructed models of human abdominal aortic aneurysm, /. Vase. Surg. 31 760-769. 

The extension and stress distributions based on the model by Bogen et al. (1980) are shown in Figure 15 for the infarcted region and border zone. In panel A the systolic extensions are shown. Due to the forces imposed by the bulging aneurysm, circumferential extensions in the border zone adjacent to the infarct, are larger than normal. As a consequence, the circumferential stresses at 80° (edge of infarct) are approximately 3.7 times those at 180° (panel B). Away from the border zone, extensions and stresses are approximately uniform. 

Technique will vary significantly depending on the vascular distribution of the mesenteric aneurysm. Typically, celiac and proximal SMA aneurysms are best treated surgically. 

Typically pseudoaneurysm formation in the renal artery distribution is iatrogenic or traumatic. Other causes of aneurysm formation include fihromuscu-lar dysplasia, polyarteritis nodosa, amphetamine abuse, angiomyolipoma in the presence or absence of tuberous sclerosis, and neurofibromatosis. 

Figure 7. Simulated temperature distribution of the arterial surface during the SMP foam deployment (top). The color contours represent the temperature in °C above body temperature. Measured particle streak-line image of the flow within a model aneurysm dome (bottom).

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