Echo-guided pericardial drainage for tamponade: approach, confirmation, drain management and when to go to surgery.
At the bedside
- 1
Confirm
Echo: effusion with RA/RV diastolic collapse, plethoric IVC, respiratory variation of mitral inflow; clinical hypotension and tachycardia.
- 2
Resuscitate
Fluid bolus may transiently help; avoid positive-pressure ventilation and sedation if possible (may precipitate arrest).
- 3
Approach
Echo-guided at the site with the largest fluid collection closest to the skin (apical, parasternal or subxiphoid); subxiphoid aims at the left shoulder at 30-45°.
- 4
Confirm needle position
Echo with agitated saline in the pericardial space; then pass wire and pigtail catheter (Seldinger).
- 5
Drain
Drain in steps (about < 1 L at once) to reduce pericardial decompression syndrome; leave the pigtail; remove when output < 25-30 mL/day.
- 6
Send fluid
Cell count, protein, LDH, glucose, Gram stain, culture, AFB/GeneXpert, ADA, cytology.
- 7
Surgical drainage
Aortic dissection, trauma, purulent loculated effusion, recurrent or clotted haemopericardium after cardiac surgery.
Local anaesthetic
Lidocaine (lignocaine)
- Dose
- 1-2% lidocaine; stay under 4.5 mg/kg plain
- Worked example
- 70 kg: max ~300 mg plain = 30 mL of 1% (10 mg/mL) or 15 mL of 2%.
Pathophysiology
Tamponade occurs when intrapericardial pressure exceeds cardiac filling pressures; the rate of accumulation matters more than volume (200 mL acutely vs > 1 L chronically). Ventricular interdependence produces pulsus paradoxus.
Evidence
- ESC 2015 pericardial guideline (procedural detail) [Adler 2015].
- ESC 2025 myocarditis and pericarditis guideline update [Schulz-Menger 2025].
Controversies
- Extended drainage to reduce recurrence; timing of drain removal.
🇮🇳 India notes
- Tuberculous pericarditis is a leading cause of large effusions in India; send ADA, GeneXpert and consider anti-tubercular therapy.
- Pigtail pericardial kits may not be available outside cath labs - a CVC set over a wire is a common improvisation (smaller lumen, blocks more easily).
References
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