Caitlin was born with a life-threatening heartabnormality.
凯特琳先天患有危及生命的心脏病。
《柯林斯英汉双解大词典》
2
The causes of sudden cardiac death in young people vary. About two-thirds of the time, a coroner discovers during an autopsy that the death was due to a heartabnormality.
造成年轻人心脏骤停的原因有多种，但验尸官在验尸的时候发现，有三分之二的人都是死于先天性心脏病。
3
Record any evidence of heart murmurs, cardiac failure, other heartabnormality, irregularity of rhythm, or abnormality of peripheral pulses.