id author title date pages extension mime words sentences flesch summary cache txt cord-346411-d2re00r9 Boonyaratanakornkit, Jim Predictive Value of Respiratory Viral Detection in the Upper Respiratory Tract for Infection of the Lower Respiratory Tract With Hematopoietic Stem Cell Transplantation 2020-02-01 .txt text/plain 4416 200 43 In a small study of adults, the majority of which were HCT recipients or had a hematologic malignancy, with matched NP and BAL specimens, PCR-based NP testing for respiratory viruses in patients with clinical evidence of LRT disease had a high negative predictive value (NPV) and a lower positive predictive value (PPV) [5] . A larger study that included mostly immunocompromised patients concluded that if a pathogen (a respiratory virus or 1 of 3 bacterial pathogens detected by a multiplex PCR panel) was already identified from an NP sample, BAL testing is unlikely to provide additional information; however, a significant number (20%) of subjects had a pathogen detected in the BAL without a positive NP sample [6] . In the present study, we characterized the rates of discordance in respiratory viral detection between matched URT and LRT samples in a large cohort of HCT candidates/recipients who underwent BAL for suspected LRTI and had concomitant URT testing. ./cache/cord-346411-d2re00r9.txt ./txt/cord-346411-d2re00r9.txt