In contrast, dissections confined to the descending aorta are treated medically unless progression of dissection, intractable pain, organ malperfusion, or extra-aortic blood is demonstrated.

• 相反，降主动脉夹层除非存在夹层持续进展、剧烈疼痛、脏器缺血、夹层破裂出血，否则主张药物保守治疗。