Table 28.

High-Risk Features in Uncomplicated Acute Type B Aortic Dissection⁹

High-Risk Imaging Findings

Maximal aortic diameter >40 mm

False-lumen diameter >20–22 mm

Entry tear >10 mm

Entry tear on lesser curvature

Increase in total aortic diameter of >5 mm between serial imaging studies

Bloody pleural effusion

Imaging-only evidence of malperfusion

High-Risk Clinical Findings

Refractory hypertension despite >3 different classes of antihypertensive medications at maximal recommended or tolerated doses

Refractory pain persisting >12 h despite maximal recommended or tolerated doses

Need for readmission