Microcirculation in chronic venous insufficiency

Area of Science:

• Vascular Biology
• Dermatology
• Pathophysiology

Background:

• The venous system's anatomy and physiology are fundamental to understanding venous diseases.
• Venous microangiopathy is a complex condition with multifactorial causes.
• Disturbances in microcirculation significantly impact the development and healing of venous ulcers.

Purpose of the Study:

• To review the pathophysiology of the venous system.
• To summarize theories on the causes of venous microangiopathy.
• To outline associated microlymphatic, neurologic, and hemorheologic disturbances.

Main Methods:

• Review of existing literature on venous pathophysiology and microangiopathy.
• Synthesis of theories including red blood cell deoxygenation, arteriovenous shunts, fibrin cuffs, and growth factor/white blood cell trapping.
• Analysis of findings from histology, capillary microscopy, microlymphography, laser Doppler fluxmetry, and transcutaneous oxygen measurements.

Main Results:

• The review details various theories contributing to venous microangiopathy.
• Associated microlymphatic, neurologic, and hemorheologic disturbances are outlined.
• Specific findings from diagnostic methods in venous microangiopathy are presented.
• A novel pattern of microcirculation perfusion in venous ulcers is discussed.

Conclusions:

• Venous microangiopathy arises from a combination of factors affecting the venous system's microcirculation.
• Understanding these disturbances is crucial for managing venous diseases and ulcers.
• Further research into microcirculation patterns may improve therapeutic strategies for venous ulcers.