Pleural Aspiration (Thoracentesis)

Breathing · Medicine · 10–20 min

Diagnostic or therapeutic drainage of pleural fluid.

Indications

  • New pleural effusion (diagnostic)
  • Symptomatic effusion (therapeutic)

Contraindications

  • Coagulopathy (INR > 1.5)
  • Platelets < 50
  • Skin infection at site

Equipment

  • USG (recommended)
  • Sterile kit
  • Local anesthetic
  • 50 mL syringe + 3-way tap
  • 18-G needle or pigtail
  • Collection bottles for biochem/micro/cyto

Positioning

  • Sitting, leaning forward on bedside table.

Consent

  • Explain indication, benefits, alternatives
  • Explain risks & complications
  • Obtain written/verbal consent as per SOP
  • Document consent

Universal precautions

  • Hand hygiene
  • PPE — gloves, mask, eye protection
  • Aseptic technique
  • Sharps safety
  • Verify patient identity & site

Step-by-step (0/6)

Tap to complete

1. Mark site

USG-guided; typically posterior axillary line 1–2 ICS below upper level of effusion, above 8th rib.

2. Sterile prep & local

3. Advance needle

4. Sample & drain

5. Withdraw & dressing

6. Post-CXR

Immediate complications

  • Pneumothorax
  • Bleeding
  • Re-expansion pulmonary edema
  • Vasovagal

Delayed complications

  • Infection

Recognition

  • Cough, dyspnea, hypoxia

Initial management

  • Stop; CXR; O2

Prevention

  • USG guidance
  • Limit volume

Post-procedure observation

  • Vitals q15min × 1h then hourly

Monitoring

  • Site inspection
  • Symptom review

Documentation

  • Procedure note
  • Consent
  • Findings

Patient instructions

  • Report pain, bleeding, fever, worsening symptoms

Educational bedside guide. Perform only under supervision until competent. Follow local SOPs and consent policy.

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