id author title date pages extension mime words sentences flesch summary cache txt cord-284702-reu77suz Lau, Suet-Ting Tachycardia amongst subjects recovering from severe acute respiratory syndrome (SARS) 2005-04-08 .txt text/plain 734 51 46 This study to identify the possible causes for the tachycardia excluded active disease, thyroid dysfunction, haematological, cardiac, autonomic and significant pulmonary defect at 2 months from onset of disease. Possible causes are deconditioning [2] , impaired pulmonary function, impaired cardiac function, cardiac arrhythmia, thyroid dysfunction, anaemia, autonomic dysfunction [3] and anxiety state. Chest radiography findings, haemoglobin level, length of hospital stay, time elapsed after discharge, presence of complications, WHO Quality of Life (QOL) score and Monitored Functional Task Evaluation (MFTE) score [4] are shown in Table 2 . Mild residual CXR changes, minor lung function impairment and normal blood gas makes pulmonary defect unlikely to be a significant cause of sinus tachycardia during normal activity. Deconditioning and anxiety state causes tachycardia in the daytime but not at night, and is compatible with the pattern observed in this cohort. In the absence of significant cardiac, pulmonary, thyroid and haematological dysfunction, we believe that sinus tachycardia is attributable to physical deconditioning and contributed by impaired psychological well-being. ./cache/cord-284702-reu77suz.txt ./txt/cord-284702-reu77suz.txt