The 2007 Infectious Disease Society of America/American Thoracic Society (IDSA/ATS) guidelines for community-acquired pneumonia (CAP) recommended new criteria to guide admission to the intensive care unit (ICU) for patients with this condition. Although the major criteria (requirement for mechanical ventilation or septic shock requiring vasopressor support) are well established, the value of the minor criteria alone have not been fully validated.
Chalmers, J. D., Taylor, J. K., Mandal, P., Choudhury, G., Singanayagam, A., Akram, A. R., & Hill, A. T. (2011). Validation of the Infectious Diseases Society of America/American Thoratic Society minor criteria for intensive care unit admission in community-acquired pneumonia patients without major criteria or contraindications to intensive care unit care. Clinical Infectious Diseases, 53(6), 503-11. https://doi.org/10.1093/cid/cir463