病史摘要女性,29岁,于1981年2月10日入院(住院号156424)。主诉为发现心脏杂音2月余。2月余之前,病人因发热被诊为上呼吸道感染。不久觉左肩、左膝关节痛,3日后左膝关节红肿,被疑为化脓性关节炎。翌日因发现胸骨左缘第3、4肋间有Ⅲ级来往性心脏杂音,并感胸闷、心慌,又被诊 Summary of medical history Female, 29 years old, admitted to hospital on February 10, 1981 (hospital number 156424). Chief complaint was found more than 2 months of heart murmur. More than two months ago, the patient was diagnosed with upper respiratory tract infection due to fever. Feeling left shoulder, left knee pain, swelling of the left knee after 3 days, was suspected of suppurative arthritis. The following day due to the discovery of the 3rd and 4th intercostal space on the left margin of the sternum, there was grade 3 heart murmur, chest tightness, palpitation and consultation