Splanchnic hemodynamic changes after the distal spleno renal shunt

Area of Science:

• Hepatology
• Surgical Gastroenterology
• Vascular Surgery

Background:

• Distal splenorenal shunt (DSS) is a surgical procedure to manage complications of portal hypertension.
• Corrected sinusoidal pressure (CSP) is a hemodynamic parameter that may reflect portal circulation status.
• Understanding hemodynamic changes post-DSS is crucial for patient outcomes.

Purpose of the Study:

• To evaluate the changes in corrected sinusoidal pressures (CSP) before and after distal splenorenal shunt (DSS) surgery.
• To correlate CSP variations with postoperative outcomes like hyperbilirubinemia and portal blood flow.
• To assess the impact of partial portal vein thrombosis on CSP changes.

Main Methods:

• A series of 51 patients undergoing distal splenorenal shunt (DSS) surgery were studied.
• Corrected sinusoidal pressures (CSP) were measured preoperatively and postoperatively.
• Patients were grouped based on the magnitude of CSP change and presence of portal vein thrombosis.

Main Results:

• 51% of patients exhibited significant preoperative to postoperative CSP changes.
• Patients with high partial portal vein thrombosis (Group I) showed minimal CSP alteration.
• Increased CSP (Group II) correlated with hyperbilirubinemia and reduced portal blood flow; decreased CSP correlated with moderate portal blood flow reduction.

Conclusions:

• Distal splenorenal shunt surgery induces notable hemodynamic changes in CSP in a significant portion of patients.
• Specific CSP changes are associated with altered portal blood flow and hyperbilirubinemia.
• The clinical significance of these observed hemodynamic alterations following DSS remains to be determined.