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Ascites Drain

Image by Annie Spratt

Ascites drain procedures, known as therapeutic paracentesis or abdominal drainages, involve the percutaneous insertion of a catheter or needle into the peritoneal cavity to remove excess fluid, typically resulting from liver dysfunction, malignancy, or other underlying pathologies. This procedure aims to alleviate symptoms associated with abdominal distention, discomfort, and respiratory compromise caused by the accumulation of fluid.

Under sterile conditions, the skin is punctured, and a specialized catheter or needle is advanced into the peritoneal cavity, guided by ultrasound. Once in place, the catheter is connected to a drainage system, which may include a collection bag or vacuum bottle, allowing for the controlled removal of ascitic fluid.

The volume and rate of fluid drainage are carefully monitored to maintain hemodynamic stability and prevent potential complications such as hypovolemia or electrolyte imbalances. The procedure may also involve the infusion of intravenous fluids or albumin to maintain fluid balance and prevent circulatory disturbances.

Therapeutic paracentesis requires the expertise of medical professionals experienced in the management of abdominal fluid collections and the potential complications associated with the procedure. Complications may include bleeding, infection, injury to surrounding organs, or the development of post-paracentesis circulatory dysfunction. Hence, meticulous attention to aseptic technique, proper catheter placement, and close patient monitoring are crucial for optimal outcomes.

Therapeutic paracentesis serves as an important therapeutic intervention to relieve symptoms, improve respiratory function, and potentially aid in the diagnostic evaluation of the underlying cause of ascites. It is often performed in conjunction with medical management, including dietary restrictions, diuretic therapy, and treatment of the underlying condition contributing to ascites formation.

A&I Protocol

Patient is positioned supine on their bed.

  • Ultrasound guidance is used by the interventional radiographer to mark the abdomen (usually lower left or right quadrant, laterally and away from central vasculature) which demonstrates the ascites fluid.

  • Seldinger technique is used to gain access into the marked abdominal cavity using a 6F or 8F Safe-T Centesis-type catheter or similar.

  • With the change in resistance on the catheter, the attached luer-lock syringe is used to aspirate some of the ascites fluid, and then the trocar is removed leaving the pigtail catheter in place.

  • A drainage bag is attached to the catheter and the site is dressed.

  • The patient is positioned comfortably back on their bed to wait for the ascites fluid to completely drain.

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Ultrasound image demonstrating a collection ascites fluid (anechoic) in the abdominal cavity.

References

  1. Cronin CG, Gervais DA, Castillo CFD, Mueller PR, Arellano RS. Interventional radiology in the management of abdominal collections after distal pancreatectomy: a retrospective review. AJR Am J Roentgenol. 2011 Jul;197(1):241–6.

  2. Requarth J. Image-guided palliative care procedures. Surg Clin North Am. 2011 Apr;91(2):367–402, ix. 

  3. Ota KS, Schultz N, Segaline NA. Palliative Paracentesis in the Home Setting: A Case Series. Am J Hosp Palliat Care. 2021 Aug;38(8):1042–5. 

  4. Ha T, Madoff DC, Li D. Symptomatic Fluid Drainage: Tunneled Peritoneal and Pleural Catheters. Semin Intervent Radiol. 2017 Dec;34(4):337–42. 

  5. Barsuk JH, Cohen ER, Feinglass J, McGaghie WC, Wayne DB. Clinical outcomes after bedside and interventional radiology paracentesis procedures. Am J Med. 2013 Apr;126(4):349–56. 
     

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