TY - CHAP M1 - Book, Section TI - Pneumonia A1 - Fitzpatrick, Meghan E. A1 - Prendergast, Niall T. A1 - Rivera-Lebron, Belinda A2 - Papadakis, Maxine A. A2 - McPhee, Stephen J. A2 - Rabow, Michael W. A2 - McQuaid, Kenneth R. PY - 2022 T2 - Current Medical Diagnosis & Treatment 2022 AB - KEY CLINICAL UPDATES IN PNEUMONIAProcalcitonin is not recommended as a “rule-out” test for bacterial pneumonia; studies have not found a threshold at which bacterial pneumonia can be reliably distinguished from viral pneumonia based on procalcitonin levels.Empiric antibacterial agents are recommended regardless of procalcitonin level at time of presentation.Based on limited data and because of the potential for complications (eg, hyperglycemia), the IDSA/ATS guidelines recommend against corticosteroids in the treatment CAP of any severity.Corticosteroids are recommended for patients with CAP who may also have severe septic shock, acute exacerbation of asthma or COPD, or adrenal insufficiency. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/16 UR - accessmedicine.mhmedical.com/content.aspx?aid=1186012744 ER -