Nursing care
Empyema nursing care: what to assess and what to do first
Written and reviewed by Dana Whitfield, RN, MSN · 5 min read · Updated September 2026
Short answer
Empyema is pus in the pleural space, usually following untreated or partially treated pneumonia. The nursing priority is early recognition of the patient who spikes a fever again after seeming to improve, followed by chest tube drainage and weeks of IV antibiotics. Monitor drainage character, respiratory status and for signs the infection is walling off into loculations.
The pathophysiology in one pass
Empyema develops in three stages. First, an exudative phase where thin, free-flowing infected fluid collects in the pleural space, usually seeded from a parapneumonic effusion. Second, a fibrinopurulent phase where fibrin strands begin to form septations and the fluid thickens with pus. Third, an organising phase where a thick fibrous peel encases the lung, restricting expansion even after the infection clears.
The clinical clue that separates empyema from simple pneumonia is timing. A patient treated for pneumonia who improves, then spikes a new fever, develops pleuritic chest pain, or becomes short of breath again around day five to seven should raise suspicion. That second fever is not a treatment failure of the antibiotic choice; it usually means fluid has become infected and needs to be drained, not just treated with more of the same drug.
Assessment findings that matter
Expect decreased or absent breath sounds over the affected area, dullness to percussion, and reduced tactile fremitus, all consistent with fluid rather than consolidation alone. Pleuritic chest pain that worsens with inspiration is common because the infected fluid irritates the parietal pleura. Tachypnoea and tachycardia often accompany a persistent low-grade or spiking fever.
Ask about the trajectory of the current illness specifically. A history of pneumonia treated seven to ten days ago that seemed to be resolving, then worsened, is the pattern to listen for. Check recent chest X-ray or CT reports for a loculated effusion, and review any pleural fluid analysis: empyema fluid is typically turbid or frankly purulent, with a pH below 7.2, low glucose, and a positive Gram stain or culture. These lab values distinguish empyema from a simple parapneumonic effusion that might resolve with antibiotics alone.
What the exam asks about this
NCLEX questions on empyema commonly test whether you recognise the fever-after-improvement pattern as a red flag rather than assuming the antibiotic simply needs more time. Expect a question stem describing a patient several days into pneumonia treatment who develops a new fever, and you must select chest tube placement or further diagnostic workup over waiting.
Chest tube drainage system questions are frequent here too. You may be asked to interpret tidaling, bubbling, or a sudden stop in drainage, and to identify that a sudden decrease in output alongside worsening respiratory status suggests a blocked tube rather than resolution. Priority-setting items will ask you to rank pain control, drain patency, and antibiotic timing, with drain patency and respiratory assessment usually outranking comfort measures alone.
Nursing interventions in priority order
Airway and oxygenation come first: position the patient upright or in high Fowler's to maximise lung expansion, apply supplemental oxygen as ordered, and monitor SpO2 continuously if respiratory distress is present. Once the chest tube is placed, verify the drainage system is set up correctly, check for tidaling in the water seal chamber, and record the colour, consistency and volume of output hourly initially, then per unit protocol.
Administer IV antibiotics on schedule; empyema treatment typically runs two to six weeks depending on response and whether surgical decortication was needed, so consistent timing matters for source control. Encourage incentive spirometry and deep breathing every one to two hours while awake to prevent atelectasis in the unaffected lung tissue. Manage pain proactively, since inadequate analgesia leads to shallow breathing and splinting, which worsens the very lung expansion you are trying to protect.
Medications and monitoring
Empiric IV antibiotics typically cover both aerobic and anaerobic organisms, since aspiration-related and anaerobic pathogens are common culprits, then narrow once culture results return. Expect broad coverage to continue until the patient is afebrile and drainage has decreased, followed by a prolonged course, often extending after discharge on oral therapy.
Monitor temperature trends closely; a downward trend over 48 to 72 hours after drainage is the expected response. Track white blood cell count, CRP, and chest tube output daily. Watch for signs the fluid is loculating despite drainage, such as persistent fever with declining tube output, which may signal the need for fibrinolytic instillation or surgical intervention rather than a change in antibiotic.
When to escalate
Escalate immediately for sudden chest pain with acute dyspnoea and absent breath sounds, which can indicate a pneumothorax from the procedure or tube displacement. A sudden cessation of previously active drainage combined with worsening fever or respiratory status suggests a clogged or kinked tube and needs prompt evaluation, not just observation.
Notify the provider if fever persists beyond 72 hours of drainage and antibiotics, since this often means the fluid has organised into a thick peel requiring video-assisted thoracoscopic surgery for decortication. Any new hypotension, tachycardia out of proportion to fever, or mental status change should prompt evaluation for sepsis, which remains a real risk with untreated or undertreated empyema.
The next step on this is the same as on everything else here: answer questions and read the rationales. Our respiratory practice questions are the closest set to what this page covers.
Common questions
How is empyema different from a pleural effusion?
A pleural effusion is fluid in the pleural space that may be sterile, while empyema specifically means that fluid is infected with pus. The distinguishing lab findings are a pH below 7.2, low glucose, and a positive Gram stain or culture on the pleural fluid. Empyema requires drainage, whereas a simple effusion may resolve with treatment of the underlying cause alone.
How long does the chest tube stay in for empyema?
Duration varies with how quickly drainage decreases and imaging shows lung re-expansion, but it commonly stays in place for several days to over a week. Removal criteria typically include output below a set threshold, usually around 100 to 150 mL over 24 hours, no air leak, and improved chest imaging. Institutional protocols vary, so always confirm against your facility's removal criteria.
Why does the fever come back after pneumonia seems to be improving?
This pattern suggests the infection has moved into the pleural space and formed an empyema rather than resolving with antibiotics alone. Infected fluid walled off in the pleural space is not well penetrated by antibiotics circulating in the blood, so drainage becomes necessary alongside continued antibiotic therapy.
What does turbid pleural fluid on thoracentesis mean?
Turbid or cloudy fluid suggests a high white cell count and possible infection, and it should prompt pH, glucose, LDH, and culture testing to confirm empyema. Frankly purulent fluid confirms empyema outright and typically means a chest tube is needed rather than a diagnostic thoracentesis alone.