How is pericardiocentesis performed?

How to Perform Pericardiocentesis

Pericardiocentesis must be performed under imaging guidance (echocardiography or fluoroscopy) by an experienced operator in a facility equipped for radiographic, echocardiographic, hemodynamic, and ECG monitoring—blind procedures must not be used except in immediately life-threatening situations. 1

Pre-Procedure Requirements

Essential Setup

• Operator: Experienced physician with trained staff
• Location: Facility with full monitoring capabilities (echo, fluoroscopy, hemodynamics, ECG)
• Anesthesia: Local anesthesia 1
• Imaging: Real-time guidance is mandatory to avoid cardiac laceration, pneumothorax, liver injury, and vascular damage 1

Imaging-Guided Approaches

Echo-Guided Technique (Preferred Method)

Entry site selection: Identify the point on the body surface where the effusion is closest to the transducer and fluid collection is maximal 1

Critical anatomical considerations to avoid:

• The liver
• Myocardium
• Lung tissue
• Internal mammary artery (stay 3-5 cm away from parasternal border)
• Vascular bundle at inferior margin of each rib 1

Procedure steps:

1. Mark the intended entry point on skin
2. Carefully note the direction of the ultrasound beam
3. Define needle trajectory by transducer angulation
4. Use either direct echo-guidance or echo-monitoring throughout 1

Recent innovations include an in-plane parasternal medial-to-lateral approach using high-frequency probes, which enables real-time needle visualization and theoretically reduces complications 2. An off-plane anterior approach with linear transducers also offers continuous needle tracking 3.

Fluoroscopic-Guided Technique

Subxiphoid route (most common):

• Advance a Tuohy-17 blunt-tip introducer needle to the left side
• Use a polytef-sheathed needle with saline-filled syringe attached
• Advance under moderate suction until pericardial sac is reached 1

Alternative Approaches

The apical approach offers a safe and effective alternative, particularly in patients with challenging anatomies (obesity, prior surgery, loculated effusions) 4, 5. The most favorable approach is always where pericardial fluid is closest to the body surface with minimal intervening vital structures 5.

Post-Drainage Management

For complete decompression: Consider prolonged pericardial drainage (up to 30 mL/24 hours) to promote adherence of pericardial layers and prevent reaccumulation 1. This is particularly important as recurrence rates can be 40-70% in certain etiologies 1.

Specific Clinical Contexts

Cardiac Tamponade

• Class I indication for immediate pericardiocentesis 1
• Procedure is both diagnostic and life-saving 6

Malignant Effusions

After drainage, consider:

• Extended drainage to prevent recurrence 1
• Intrapericardial instillation of cytostatic/sclerosing agents (cisplatin for lung cancer, thiotepa for breast cancer) 1

When Pericardiocentesis Cannot Be Performed

Surgical pericardiotomy is indicated, though it carries higher complication rates than percutaneous approaches 1

Critical Pitfalls to Avoid

• Never perform blind pericardiocentesis except in extreme emergencies where death is imminent 1
• Avoid the subxiphoid approach if liver is enlarged or anatomy is unfavorable
• In pulmonary hypertension patients, use extra caution as complete decompression may be less tolerated 5
• Ensure continuous imaging throughout—loss of visualization increases risk of cardiac puncture, coronary artery rupture, pneumothorax, and liver injury 1, 6