›Loculated or complicated collections not draining adequately
›Failure of simple tube thoracostomy at 24 to 48 hours
›Evidence
›MIST2 trial: significant reduction in surgical referral and hospital stay
›Class IIa recommendation for fibrinolytic use in loculated parapneumonic effusions
›Contraindications
›Active hemorrhage
›Recent thrombolysis
›Bronchopleural fistula is a relative contraindication
›Community-acquired empyema regimens
›First-line options
›Ceftriaxone 2 g IV daily plus metronidazole 500 mg IV every 8 hours
›Ampicillin/sulbactam 3 g IV every 6 hours as monotherapy option
›Anaerobic coverage rationale
›Continue even with negative anaerobic cultures
›Anaerobes difficult to culture from pleural fluid
›Aspiration risk factors increase anaerobic likelihood
›Alternative anaerobic coverage
›Clindamycin 600 mg IV every 8 hours as metronidazole alternative
›Renal adjustment not required for clindamycin
›Hospital-acquired empyema regimens
›Empiric broad-spectrum options
›Vancomycin 15 to 20 mg/kg IV every 8 to 12 hours plus cefepime 2 g IV every 8 hours plus metronidazole 500 mg IV every 8 hours
›Vancomycin plus piperacillin/tazobactam 4.5 g IV every 6 hours
›Meropenem 1 g IV every 8 hours plus vancomycin if ESBL-producing organisms suspected
›Aminoglycosides avoid
›Inactivated in acidic empyema fluid
›Poor pleural penetration
›Not recommended regardless of organism
›Intrapleural antibiotics
›No role for intrapleural antibiotic administration
›Systemic IV antibiotics are adequate for pleural penetration
›Duration
›Guided by clinical response
›IV antibiotics until drain removed and clinical improvement
›Total course typically 3 to 6 weeks including IV-to-PO step-down
›IV-to-PO step-down criteria
›Afebrile 24 to 48 hours
›Tolerating oral intake
›Adequate pleural drainage achieved
›Oral options: amoxicillin-clavulanate 875 mg every 12 hours or co-trimoxazole based on sensitivities
›Video-assisted thoracoscopic surgery (VATS)
›Indications
›Failed medical management at 3 to 5 days
›Organized stage III empyema with trapped lung
›Thick pleural peel preventing lung re-expansion
›Advantages
›Direct visualization and decortication
›Debridement of fibrinous material
›Lower morbidity than open thoracotomy
›Open thoracotomy
›Reserved for VATS failure or inaccessible collections
›Higher morbidity but allows full decortication
›Nutritional support
›Albumin optimization
›Albumin < 27 g/L associated with poor outcomes via RAPID score
›Enteral nutrition preferred over parenteral
›Caloric and protein optimization
›Catabolic sepsis state increases requirements
›Dietitian involvement in prolonged hospitalizations