A 78-year-old female patient was admitted on July 16, 2007 because of cough, intermitted fever for 1 month and dyspnea for 1 d. The patient had dry cough and fever with body temperature lower than 38℃ after catching cold in early June, 2007. She was treated in several clinics with many kinds of antibiotics. The symptoms were never fully relieved. On July 15, 2007, the patient experienced sudden onset of palpitation and dyspnea after defecation. Palpitation and dyspnea were alleviated after she sat in bed and rested for over 1 h.