An attempt to create spleno-systemic anastomosis in the rat

Area of Science:

• Surgical innovation
• Vascular research
• Animal models

Background:

• The spleen plays a crucial role in the circulatory system.
• Understanding splenic venous flow is important for various medical conditions.
• Limited experimental models exist for studying splenic vascular dynamics.

Purpose of the Study:

• To develop and evaluate a novel surgical technique for selective splenic venous flow diversion into the systemic circulation in a rat model.
• To investigate the development of collateral circulation following splenic transposition and ligation.
• To establish an experimental model for exploring the spleno-hepatic axis.

Main Methods:

• A two-stage surgical procedure was performed on 15 rats.
• The procedure involved subcutaneous splenic transposition and splenic vein ligation.
• Angiography was utilized to assess blood flow diversion and collateral development.

Main Results:

• A robust collateral system rapidly formed between the transposed spleen and the systemic circulation.
• Angiography confirmed significant diversion of splenic venous flow into systemic circulation via newly developed collaterals.
• The surgical model demonstrated successful redirection of blood flow.

Conclusions:

• The described surgical method provides an effective experimental model for selective splenic venous flow diversion.
• The rapid development of collateral circulation highlights the adaptability of the vascular system.
• This model may facilitate further research into the spleno-hepatic axis and related physiological processes.