gǎnmào / hòu / rúguǒ / chūxiàn / xiōngmèn / yào / jǐngtì / xīnjīyán / de / fāshēng感冒后如果出现胸闷,要警惕心肌炎的发生。If you feel chest tightness after a cold, be alert to the possibility of myocarditis.