Stefan Riedel

Summary

Affiliation: Johns Hopkins University
Country: USA

Publications

  1. pmc Evaluation of Bio-Rad MRSASelect agar for detection of methicillin-resistant Staphylococcus aureus directly from blood cultures
    Stefan Riedel
    The Johns Hopkins University, School of Medicine, Department of Pathology Division of Microbiology, Baltimore, MD 21224, USA
    J Clin Microbiol 48:2285-8. 2010
  2. doi request reprint Determination of Disk Diffusion and MIC Quality Control Guidelines for Solithromycin, a Novel Fluoroketolide Antibacterial, against Neisseria gonorrhoeae
    Stefan Riedel
    The Johns Hopkins University, Baltimore, Maryland, USA
    J Clin Microbiol 53:3888-90. 2015
  3. pmc Comparison of commercial antimicrobial susceptibility test methods for testing of Staphylococcus aureus and Enterococci against vancomycin, daptomycin, and linezolid
    Stefan Riedel
    The Johns Hopkins University, School of Medicine, Department of Pathology, Division of Microbiology, Baltimore, Maryland, USA Johns Hopkins Bayview Medical Center, Baltimore, Maryland, USA
    J Clin Microbiol 52:2216-22. 2014
  4. doi request reprint Laboratory detection of sepsis: biomarkers and molecular approaches
    Stefan Riedel
    Division of Microbiology, Department of Pathology, School of Medicine, The Johns Hopkins University, and Johns Hopkins Bayview Medical Center, 4940 Eastern Avenue, A Building, Room 102 B, Baltimore, MD 21224, USA
    Clin Lab Med 33:413-37. 2013
  5. doi request reprint Procalcitonin and the role of biomarkers in the diagnosis and management of sepsis
    Stefan Riedel
    Division of Microbiology, Department of Pathology, School of Medicine, The Johns Hopkins University, Baltimore, MD 21224, USA
    Diagn Microbiol Infect Dis 73:221-7. 2012
  6. pmc Comparison of BD Bactec Plus Aerobic/F medium to VersaTREK Redox 1 blood culture medium for detection of Candida spp. in seeded blood culture specimens containing therapeutic levels of antifungal agents
    Stefan Riedel
    The Johns Hopkins University, School of Medicine, Department of Pathology Division of Microbiology, Johns Hopkins Bayview Medical Center, 4940 Eastern Avenue, Baltimore, MD 21224, USA
    J Clin Microbiol 49:1524-9. 2011
  7. doi request reprint Blood cultures: key elements for best practices and future directions
    Stefan Riedel
    Division of Microbiology, Department of Pathology, Johns Hopkins Bayview Medical Center, 4940 Eastern Avenue, Baltimore, MD 21224, USA
    J Infect Chemother 16:301-16. 2010
  8. pmc Comparison of the Bactec 9240 and BacT/Alert blood culture systems for evaluation of placental cord blood for transfusion in neonates
    Stefan Riedel
    The Johns Hopkins University, School of Medicine, Department of Pathology, Division of Microbiology, Johns Hopkins Bayview Medical Center, 4940 Eastern Avenue, A Building, Room 102 B, Baltimore, MD 21224, USA
    J Clin Microbiol 47:1645-9. 2009
  9. pmc Timing of specimen collection for blood cultures from febrile patients with bacteremia
    Stefan Riedel
    University of Iowa Hospitals and Clinics, Department of Pathology Division of Microbiology, 200 Hawkins Drive, C 606 GH, Iowa City, IA 52242 1009, USA
    J Clin Microbiol 46:1381-5. 2008
  10. doi request reprint Procalcitonin as a marker for the detection of bacteremia and sepsis in the emergency department
    Stefan Riedel
    Dept of Pathology, The Johns Hopkins University, Baltimore, MD 21224, USA
    Am J Clin Pathol 135:182-9. 2011

Detail Information

Publications17

  1. pmc Evaluation of Bio-Rad MRSASelect agar for detection of methicillin-resistant Staphylococcus aureus directly from blood cultures
    Stefan Riedel
    The Johns Hopkins University, School of Medicine, Department of Pathology Division of Microbiology, Baltimore, MD 21224, USA
    J Clin Microbiol 48:2285-8. 2010
    ..Results were compared to organism identification by using standard laboratory methods. Confirming coagulase on pink isolates, the sensitivity and specificity were both 99%...
  2. doi request reprint Determination of Disk Diffusion and MIC Quality Control Guidelines for Solithromycin, a Novel Fluoroketolide Antibacterial, against Neisseria gonorrhoeae
    Stefan Riedel
    The Johns Hopkins University, Baltimore, Maryland, USA
    J Clin Microbiol 53:3888-90. 2015
    ..25 μg/ml, and DD, 33 to 43 mm. In January 2015, the CLSI Subcommittee on Antimicrobial Susceptibility Testing approved these ranges, which will be important when evaluating solithromycin against clinical isolates of N. gonorrhoeae. ..
  3. pmc Comparison of commercial antimicrobial susceptibility test methods for testing of Staphylococcus aureus and Enterococci against vancomycin, daptomycin, and linezolid
    Stefan Riedel
    The Johns Hopkins University, School of Medicine, Department of Pathology, Division of Microbiology, Baltimore, Maryland, USA Johns Hopkins Bayview Medical Center, Baltimore, Maryland, USA
    J Clin Microbiol 52:2216-22. 2014
    ..Daptomycin MICs were 1 to 2 log2 concentrations higher by all AST methods, except Etest, potentially impacting definitive antimicrobial therapy for bloodstream infections due to these organisms. ..
  4. doi request reprint Laboratory detection of sepsis: biomarkers and molecular approaches
    Stefan Riedel
    Division of Microbiology, Department of Pathology, School of Medicine, The Johns Hopkins University, and Johns Hopkins Bayview Medical Center, 4940 Eastern Avenue, A Building, Room 102 B, Baltimore, MD 21224, USA
    Clin Lab Med 33:413-37. 2013
    ..Because new technologies are quickly emerging, physicians and laboratories must appreciate the key factors and characteristics that affect the clinical usefulness and diagnostic accuracy of these test methodologies. ..
  5. doi request reprint Procalcitonin and the role of biomarkers in the diagnosis and management of sepsis
    Stefan Riedel
    Division of Microbiology, Department of Pathology, School of Medicine, The Johns Hopkins University, Baltimore, MD 21224, USA
    Diagn Microbiol Infect Dis 73:221-7. 2012
    ..This review is intended to provide additional information for clinicians and microbiologists to better understand the physiology and diagnostic utility of procalcitonin for sepsis and other infectious disease conditions...
  6. pmc Comparison of BD Bactec Plus Aerobic/F medium to VersaTREK Redox 1 blood culture medium for detection of Candida spp. in seeded blood culture specimens containing therapeutic levels of antifungal agents
    Stefan Riedel
    The Johns Hopkins University, School of Medicine, Department of Pathology Division of Microbiology, Johns Hopkins Bayview Medical Center, 4940 Eastern Avenue, Baltimore, MD 21224, USA
    J Clin Microbiol 49:1524-9. 2011
    ..In the presence of therapeutic levels of commonly used antifungal agents, the Bactec FX system demonstrated a significantly greater recovery of various Candida spp., as well as a shorter LTD...
  7. doi request reprint Blood cultures: key elements for best practices and future directions
    Stefan Riedel
    Division of Microbiology, Department of Pathology, Johns Hopkins Bayview Medical Center, 4940 Eastern Avenue, Baltimore, MD 21224, USA
    J Infect Chemother 16:301-16. 2010
    ....
  8. pmc Comparison of the Bactec 9240 and BacT/Alert blood culture systems for evaluation of placental cord blood for transfusion in neonates
    Stefan Riedel
    The Johns Hopkins University, School of Medicine, Department of Pathology, Division of Microbiology, Johns Hopkins Bayview Medical Center, 4940 Eastern Avenue, A Building, Room 102 B, Baltimore, MD 21224, USA
    J Clin Microbiol 47:1645-9. 2009
    ..In our laboratory, the Bactec system compared to the BacT/Alert system was the superior method for rapid detection of bacterial contaminants in cord blood...
  9. pmc Timing of specimen collection for blood cultures from febrile patients with bacteremia
    Stefan Riedel
    University of Iowa Hospitals and Clinics, Department of Pathology Division of Microbiology, 200 Hawkins Drive, C 606 GH, Iowa City, IA 52242 1009, USA
    J Clin Microbiol 46:1381-5. 2008
    ..A subset analysis based on patient age, gender, white blood cell count and specific cause of bacteremia generally also failed to reveal any associations...
  10. doi request reprint Procalcitonin as a marker for the detection of bacteremia and sepsis in the emergency department
    Stefan Riedel
    Dept of Pathology, The Johns Hopkins University, Baltimore, MD 21224, USA
    Am J Clin Pathol 135:182-9. 2011
    ..The positive predictive value was 17% and the negative predictive value 98% compared with blood cultures. Procalcitonin is a useful marker to rule out sepsis and systemic inflammation in the ED...
  11. pmc Comparison of the BACTEC 9240 and BacT/Alert blood culture systems for detection of bacterial contamination in platelet concentrates
    Stefan Riedel
    Division of Clinical Microbiology and Transfusion Medicine, Department of Pathology, University of Iowa College of Medicine, Iowa City, IA 52242, USA
    J Clin Microbiol 44:2262-4. 2006
    ..Among all comparisons, growth was detected, on average, 1.7 h sooner with the BACTEC system. The differences in length of time to detection were statistically significant...
  12. doi request reprint Ochroconis gallopava infection in a patient with chronic granulomatous disease: case report and review of the literature
    Zina Meriden
    Department of Pathology, Division of Infectious Disease, The Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
    Med Mycol 50:883-9. 2012
    ..We also review the literature of human infections with Ochroconis to date, and discuss its microbiology to apprise both clinicians and laboratory personnel of this infrequently encountered but potentially aggressive pathogen...
  13. doi request reprint Large-scale clinical validation of a lateral flow immunoassay for detection of cryptococcal antigen in serum and cerebrospinal fluid specimens
    Nuntra Suwantarat
    Division of Medical Microbiology, Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD
    Diagn Microbiol Infect Dis 82:54-6. 2015
    ..Overall, the LFA had sensitivity of 100% and specificity of 99.6% for the diagnosis of cryptococcosis. The LFA is rapid, accurate, and easy to perform, and it is suitable for routine patient care testing. ..
  14. doi request reprint Evaluation of the BD Vacutainer Plus Urine C&S Preservative Tubes compared with nonpreservative urine samples stored at 4°C and room temperature
    Stephen W Eisinger
    Division of Microbiology, Department of Pathology, School of Medicine, Johns Hopkins University, Baltimore, MD 21224, USA
    Am J Clin Pathol 140:306-13. 2013
    ..We evaluated the usefulness of BD Vacutainer Plus Urine C&S Preservative Tube in ensuring specimen stability...
  15. pmc Antimicrobial resistance among Gram-negative bacilli causing infections in intensive care unit patients in the United States between 1993 and 2004
    Shawn R Lockhart
    Department of Pathology, University of Iowa Hospitals and Clinics, 200 Hawkins Drive, Iowa City, IA 52242 1009, USA
    J Clin Microbiol 45:3352-9. 2007
    ..P. aeruginosa, K. pneumoniae, and E. cloacae...
  16. pmc Intravenous immunoglobulin contains a broad repertoire of anticarbohydrate antibodies that is not restricted to the IgG2 subclass
    Stephan von Gunten
    Department of Medicine, Division of Allergy and Clinical Immunology, Johns Hopkins University School of Medicine, Baltimore, MD 21224 6821, USA
    J Allergy Clin Immunol 123:1268-76.e15. 2009
    ..Specificities for carbohydrate IgG antibodies, thought to be predominantly of the IgG2 subclass, have never been broadly examined in healthy human subjects...
  17. pmc Case of Mycobacterium marinum infection with unusual patterns of susceptibility to commonly used antibiotics
    Nicole Parrish
    Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
    J Clin Microbiol 49:2056-8. 2011
    ..Susceptibility testing is not routinely performed, and single-drug therapy is used for the treatment of most infections. Here, we report an infection caused by a drug-resistant M. marinum strain in an otherwise healthy patient...