Procalcitonin Protocol Use to Guide Antibiotic Therapy Duration in the Intensive Care Unit

Inclusion Criteria: * ● Patients aged 18 years or older * Patients being monitored on the PCT protocol * ICU location status for at least part of the admission * Received antibiotics in the ICU for a diagnosis of: * Community-acquired pneumonia * Hospital-acquired pneumonia * Ventilator-associated pneumonia * Sepsis and/or septic shock * Uncomplicated bacteremia with known source * Chronic obstructive pulmonary disorder exacerbation * Asthma exacerbation Exclusion Criteria: * Received antibiotics in the ICU for a diagnosis of: * Uncomplicated skin and soft tissue infections * Abscess * Empyema * Bacterial infections that require prolonged antibiotic therapy (e.g., osteomyelitis, endocarditis, tuberculosis, etc.) * Intra-abdominal infection * Urinary tract infection * Bacterial meningitis * Estimated Glomerular Filtration Rate \<15 mL/min * Requiring renal replacement therapy * Status post cardiac arrest/target temperature management