患者,女,23岁。1年前怀孕,妊娠7个月时因严重心慌、闷气而急诊行剖宫产,产下一女婴。术后出现咳嗽,咳粉红色泡沫痰,端坐呼吸,下肢水肿,声音嘶哑。经强心利尿,对症处理后症状消失,但声音嘶哑持续存在。体检:颈软,气管居中,甲状腺无肿大,浅表淋巴结未触及,颈静脉无怒张;心前区平? Patient, female, 23 years old. A year ago, pregnancy, 7 months of pregnancy due to severe palpitation, sulking and emergency cesarean section, giving birth to a baby girl. Postoperative cough, cough pink foam sputum, sitting breathing, lower extremity edema, hoarseness. After cardiac diuretic, symptoms disappear after symptomatic treatment, but hoarseness persists. Physical examination: neck soft, tracheal center, no swelling of the thyroid, superficial lymph nodes not touched, jugular vein without ankle; precordial flat?