Which is NOT a criterion for considering stent placement in mesenteric ischemia?

In the context of mesenteric ischemia, stent placement is primarily influenced by anatomical and physiological factors that directly affect blood flow and the severity of the condition. The criteria for considering stent placement typically include the presence of significant stenosis, as indicated by a residual diameter of greater than 30%, or a pressure gradient exceeding 15 mm Hg across the lesion. These measurements help determine whether the blood flow is adequately impaired by the stenosis.

The presence of an ostial lesion is also a critical consideration because lesions at the origin of mesenteric arteries can lead to substantial ischemia due to their impact on blood flow. Thus, these anatomical details are vital for making decisions about the necessity of stenting.

In contrast, the patient's age does not directly affect the criteria for stent placement. While age may impact overall health and the risk of surgical complications, it is not a specific anatomical or physiological criterion that can determine the urgency or need for intervention in cases of mesenteric ischemia. Therefore, it does not fit within the established guidelines for making judgments about stent placement, making it the correct choice as the factor that is NOT a criterion in this context.