Clinical presentation and diagnosis

Several scoring systems are available for assessing the severity of the pneumonia: the Pneumonia Severity Index (PSI); Confusion, Uremia, Respiratory rate, Blood pressure (CURB); and CURB-65 (those 65 years and older).10,25 Some of the characteristics evaluated with these models include but are not limited to age, comorbidities, blood pressure, mental status, respiratory rate, and organ function. These models are used by physicians to help determine the severity of illness, prognosis (mortality risk), the need for hospitalization, and then to help guide in the selection of antimicrobial therapy along with the use of published guidelines.10,14,25

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