Artificial extracorporeal liver support

Artificial extracorporeal liver support is a term that is used to describe measures that are used to carry out liver function and are outside of the body. The Molecular Adsorbent Recirculation System (MARS) is an example of artificial extracorporeal liver support. MARS banks on the recycling of albumin solution via an anion exchanger and active charcoal.^[1] The patient's blood is led through the hollow fibre capillaries of a high-flux dialysis filter. Albumin solution, which is circulated in the extracorporeal circuit, passes the membrane counter directionally, allowing albumin-bound toxins in the blood to cross the membrane and bind to the albumin of the MARS circuit. The membrane is, however, impermeable to albumin. When passing the adsorber and filter cartridges, the toxins are cleared by the filter and albumin is regenerated and able to accept new toxins when passing the membrane again. Additionally, the albumin circuit itself is dialysed in the method of continuous veno-venous haemodialysis (CVVHD) or continuous veno-venous heamodiafiltration (CVVHDF), diminishing the load of water-soluble toxins.

Devices that support liver function outside of the body are:

References

^ Pless, G. (2007). "Artificial and bioartificial liver support". Organogenesis 3 (1): 20–24.

Digestive system surgical and other procedures / Digestive system surgery (ICD-9-CM V3 42–54, ICD-10-PCS 0D)

Digestive tract

Upper GI tract

SGs / Esophagus	Esophagectomy Heller myotomy Sialography Impedance–pH monitoring Esophageal pH monitoring Esophageal motility study

Stomach	Bariatric surgery Adjustable gastric band Gastric bypass surgery Sleeve gastrectomy Vertical banded gastroplasty surgery Collis gastroplasty Gastrectomy Billroth I Billroth II Roux-en-Y Gastroenterostomy Gastropexy Gastrostomy Percutaneous endoscopic gastrostomy Hill repair Nissen fundoplication Pyloromyotomy

Medical imaging	Endoscopy: Esophagogastroduodenoscopy Barium swallow Upper gastrointestinal series

Lower GI tract

Small bowel	Bariatric surgery Duodenal switch Jejunoileal bypass Ileostomy Jejunostomy Partial ileal bypass surgery

Large bowel	Appendicectomy Colectomy Colonic polypectomy Colostomy Hartmann's operation

Rectum	Abdominoperineal resection / Miles operation Lower anterior resection Total mesorectal excision

Anal canal	Anal sphincterotomy Anorectal manometry Lateral internal sphincterotomy Rubber band ligation Transanal hemorrhoidal dearterialization

Medical imaging	Endoscopy: Colonoscopy Anoscopy Capsule endoscopy Enteroscopy Proctoscopy Sigmoidoscopy Abdominal ultrasonography Defecography Double-contrast barium enema Endoanal ultrasound Enteroclysis Lower gastrointestinal series Small-bowel follow-through Transrectal ultrasonography Virtual colonoscopy

Stool tests	Fecal fat test Fecal pH test Stool guaiac test

Accessory

Liver	Artificial extracorporeal liver support Bioartificial liver devices Liver dialysis Hepatectomy Liver biopsy Liver transplantation

Gallbladder, bile duct	Cholecystectomy Cholecystostomy ERCP Hepatoportoenterostomy Medical imaging: Cholangiography IV MRCP PTC Cholecystography Cholescintigraphy

Pancreas	Frey's procedure Pancreas transplantation Pancreatectomy Pancreaticoduodenectomy Puestow procedure

Abdominopelvic

Peritoneum	Diagnostic peritoneal lavage Intraperitoneal injection Laparoscopy Omentopexy Paracentesis Peritoneal dialysis

Hernia	Hernia repair: Inguinal hernia surgery Femoral hernia repair

Other

CPRs

: DIG

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Categories

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Artificial extracorporeal liver support