Three of the dissections were iatrogenic, the report indicates, and in two other patients a COPD flare-up, with heavy coughing, preceded the acute onset of chest pain.

• 该报道指出，这些主动脉壁夹层形成的病例中有3例是医源性的，另外有2名患者在急性胸痛发作之前存在COPD突然加重，伴有剧烈咳嗽。