NCT01073345

Portal Venous Hemodynamic Changes After Hepatectomy

Portal Venous Hemodynamic Changes After Hepatectomy and the Incidence of Postoperative Ascites

• Status: Unknown
• Phase: —
• Study type: Observational
• Enrollment: 110 (actual)
• Sponsor: Heidelberg University · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

The aim of this study is to investigate the pathophysiological mechanisms underlying the formation of posthepatectomy ascites with a focus on the significance of changes in portal venous hemodynamics after hepatic resection. By evaluation of other factors that may be involved in the formation of ascites this study may help to show to what extent the increase of portal venous pressure contributes to ascites formation. Detailed knowledge about pathogenetic factors concerning the formation of postoperative ascites might help preventing protracted hospital stay and further inconveniences to the patient.

Detailed description

The mechanisms underlying the development of large-volume ascites after hepatectomy remain poorly understood. While studies on animal models suggest an increase of portal venous pressure after hepatectomy that may in turn favor the transudation of fluid into the peritoneal cavity further factors may be critically involved in the postoperative formation of ascites. These factors may include a drop in serum protein levels (and colloid osmotic pressure), a transient impairment in renal function and a surgery-induced capillary leakage. However, a better knowledge of the pathophysiology represents the prerequisite for efficient treatment. In the present study the impact of changes in hepatic hemodynamics after hepatectomy on development of ascites will be investigated. Enrolled patients will receive measurement of portal venous flow and pressure as well as hepatic artery flow before and after hepatic resection. Associations of changes in these parameters with development of postoperative ascites and further postoperative complications will be evaluated.

Conditions

• Ascites
• Hepatectomy

Interventions

Type	Name	Description
PROCEDURE	Portal venous pressure	Portal venous pressure is measured by invasive means using an arterial canula
PROCEDURE	Portal venous flow	Portal venous flow is measures using a noninvasive method (Doppler flow meter)
PROCEDURE	Hepatic artery flow	Hepatic artery flow will be measured using a noninvasive method (Doppler flow meter)

Timeline

• Start date: 2010-02-01
• Primary completion: 2010-12-01
• Completion: 2010-12-01
• First posted: 2010-02-23
• Last updated: 2010-02-23

Locations

1 site across 1 country: Germany