Q:

Which of the following statements about the peritoneovenous shunt (PVS) is/are correct?

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Which of the following statements about the peritoneovenous shunt (PVS) is/are correct? 


  1. For cirrhotic patients with intractable ascites, the LeVeen shunt is an effective “bridge” to liver transplantation.
  2. Replacement of ascites with saline or lactated Ringer\\\'s solution reduces the coagulopathy following PVS.
  3. For patients with cirrhotic ascites, the survival using repeated paracentesis with 5% albumin infusion is equivalent to that with the PVS.
  4. Oliguria (less than 25 ml. per hour) in the immediate postoperative period following PVS should be treated with a 5% albumin infusion.
  5. The transjugular intrahepatic portacaval shunt with stent (TIPSS) works on the same principle as the PVS.

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B. Replacement of ascites with saline or lactated Ringer's solution reduces the coagulopathy following PVS.

C. For patients with cirrhotic ascites, the survival using repeated paracentesis with 5% albumin infusion is equivalent to that with the PVS.

DISCUSSION: The PVS is a palliative procedure that does not prolong life. In comparing the early risks of the procedure with those of repeated paracentesis, the shunt cannot be justified as a temporizing procedure to facilitate ascites control in the patient awaiting liver transplantation. Oliguria is common in the first 24 hours after shunt insertion. A correctly placed PVS (patency confirmed using an intraoperative “shuntogram”) expands the intravascular volume with a continuous reinfusion of ascites. Inspection should identify elevation of the jugular venous pressure, and a diuretic (usually furosemide) is needed. The mechanisms of action of the two shunts are very different. TIPSS reduces portal pressure and controls ascites by reducing the rate of ascites formation. PVS reinfuses the ascites fluid, thereby reducing the prerenal stimulus to sodium retention and making the patient more responsive to diuretic therapy. 

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