The doctor said there were some issues with his coronaries that required further tests.

coronaries 是 coronary 的复数形式，coronary 来自拉丁语 corona（意为"王冠、花冠"），因为冠状动脉在心脏表面呈冠状分布而得名。 coronaries 在这里特指"冠状动脉"，即向心脏供血的动脉血管。