患者,女性,83岁。因“发现外阴肿物5月余,双下肢水肿2周”就诊于急诊。患者5月余前发现外阴恶性肿瘤并多发转移,行外阴肿物病理:高分化鳞状上皮癌,未行任何肿瘤干预治疗。患者2周前出现双下肢水肿,无胸闷痛及呼吸困难,无发热咳嗽等。入院查体:血压124/74 mm Hg,心率84次/分,心律绝对不齐,双肺未闻及明显啰音,双下肢非对称凹陷性水肿,左下肢为主。入院后检查肌钙蛋白阴性,血清钾离子6.8 mmol/L(参考值3.5~5.3 mmol/L),胸腹部CT可见双侧腹股沟区多发结节、肿块,双侧髂骨、左侧耻骨骨质破坏,考虑肿瘤,未见胸腹水。心电图如图1所示。心脏超声示:左室壁节段性运动稍减弱;
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