Sublingual microcirculatory alterations in cirrhotic patients

Area of Science:

• Hepatology
• Microcirculation Research
• Vascular Biology

Background:

• Cirrhosis leads to systemic circulatory dysfunction.
• Microcirculatory abnormalities are increasingly recognized in liver disease.
• Sublingual videomicroscopy offers a non-invasive method to assess microcirculation.

Purpose of the Study:

• To evaluate sublingual microcirculation in cirrhotic patients.
• To investigate the relationship between microcirculatory changes, spider angiomas, and disease severity.
• To explore the association with patient outcomes.

Main Methods:

• Prospective comparison of 31 cirrhotic patients and 31 controls.
• Sublingual microcirculation assessed using orthogonal polarization spectral imaging.
• Quantification of total vessel density, perfused vessel density, and hyperdynamic flow index (HFI).

Main Results:

• Cirrhotic patients displayed significantly reduced total vessel density and perfused vessel density compared to controls.
• Increased hyperdynamic flow index (HFI) and a higher prevalence of hyper-red blood cell velocity (RBCV) were observed in cirrhotic patients.
• Patients with higher MELD scores and spider angiomas showed more pronounced microcirculatory alterations.

Conclusions:

• Cirrhosis is associated with significant sublingual microcirculatory dysfunction, characterized by decreased vascular density and hyperdynamic microvessels.
• Microvascular heterogeneity is a key feature, with spider angiomas indicating more severe alterations.
• Further research is needed to elucidate the prognostic value of these microcirculatory abnormalities.