Using Risk Models to Improve Patient Selection for High-Risk Vascular Surgery

<table>Comparison of observed and expected 30-day stroke/death rate.  Risk factors include emergent procedure, preoperative ipsilateral stroke, age over 70, lack of antiplatelet agent, contralateral ICA occlusion, and congestive heart failure.</table>

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Figure 5

Figure 5: Using Risk Models to Improve Patient Selection for High-Risk Vascular Surgery 