Patient handout

Pleural Infection / Empyema

PRODUCTION

1. Your condition

This handout is for pleural infection / empyema. Your care team identified this based on: pneumonia with persistent/recrudescent fever or failure to improve on antibiotics + new/enlarging effusion (bts 2023 roberts pmid 37553157).

Other reasons your team may use this plan: pleural effusion / loculated collection complicating pneumonia on cxr / lung ultrasound / ct (bts 2023); frank pus on aspiration, pleural ph <7.20, or positive pleural gram stain/culture (bts 2023; heffner 1995 pmid 7767510); sepsis / septic shock with a pleural collection — pleural-space source (bts 2023; ssc 2026).

2. Your medications

Take these medications exactly as prescribed. Do not stop or change a dose without talking to your provider.

Medication	Starting dose	How	When	What it does
ampicillin-sulbactam	3 g IV q6h	IV	q6h (treat source pneumonia; reassess effusion 24-48 h)	Treat antecedent pneumonia + obligatory anaerobic cover should the effusion progress (BTS 2023; route to pulm.cap.core.v1)
ceftriaxone	CTX 2 g IV q24h + metronidazole 500 mg IV q8h	IV	CTX q24h + metronidazole q8h	Alternative community regimen; metronidazole supplies the obligatory anaerobic cover (BTS 2023)

Plan: BTS 2023 + MIST2 + ACCP — parapneumonic staging, acquisition-route antibiotics, drainage ladder

4. When to seek emergency care

Call 911 or go to the nearest emergency room right away if you have:

Frank pus on aspirate OR pleural pH <7.20 OR pleural glucose <60 mg/dL OR positive Gram stain/culture OR loculation on US/CT
Pleural infection with septic shock (vasopressor requirement) or organ dysfunction (Sepsis-3)(life-threatening)
Persistent sepsis or undrained collection despite chest tube + intrapleural tPA/DNase at 5-7 days, OR organising visceral rind trapping lung
RAPID score high-risk band (5-7) — 3-month mortality 29.3% (PILOT Corcoran 2020 PMID 32675200)
Continuous air leak with purulent drainage (bronchopleural fistula complicating empyema)(life-threatening)
Hospital-acquired, post-surgical, or post-instrumentation empyema (Staph/MRSA/Gram-negative incl. Pseudomonas)

5. Follow-up

Complete prolonged antibiotic course (2-6 weeks; longer for organising empyema), follow-up imaging to radiographic resolution, nutritional rehabilitation, source-pneumonia / aspiration-risk workup, return-to-work counselling (~4 wk; Meggyesy 2024 PMID 39037060)

6. Sources

Guideline: BTS 2023 Guideline for Pleural Disease (Roberts, Thorax 2023) — pleural infection; with MIST2 (intrapleural tPA+DNase), MIST1 (streptokinase null), RAPID/PILOT (mortality risk), Heffner pH meta-analysis, ACCP parapneumonic guideline