Important history includes palpitation , duration of prodrome and recovery , and presence of postural or exertional symptoms 重要病史包括：心悸、前驱症状及恢复时间、以及体位性或劳力性症状。
2.
Echocardiogram and stress tests are used only to evaluate exertional symptoms ( echo first in this case ) or suspected organic heart disease 心脏超声和运动负荷试验仅用于检查劳力性症状（首选超声）或可疑性器质性心脏病。
3.
Herein , we report the case of a 17 - year - old girl who presented with exertional dyspnea and chest pain and who was studied at our emergency department with the final diagnosis of lcx atresia detected by 64 - slice ct 我们报告一位17岁年轻女性病人，因运动时反覆胸痛及气促于急诊就医，成功以64切电脑断层诊断为左侧冠状动脉?旋枝先天性闭锁。
4.
The disease occurs when cholesterol layers deposit on the inner wall of coronary arteries and narrow the lumens of the arteries . the process reduces blood supply to cardiac muscle and causes exertional chest pain known as angina 这种心脏病的成因是胆固醇层在冠状动脉内壁积聚，令动脉管腔收窄，以致心肌的血液供应减少，导致运动时出现心绞痛。
