Standard technique in Japan for measuring hepatic venous pressure gradient

Area of Science:

• Hepatology
• Gastroenterology
• Medical Diagnostics

Background:

• Direct measurement of portal venous pressure (PVP) is invasive.
• Hepatic venous pressure gradient (HVPG) is the gold standard for evaluating portal hypertension (PH).
• Standardized measurement techniques for PVP are not widely reported.

Purpose of the Study:

• To validate standardized techniques for PVP measurement.
• To explore alternative and non-invasive methods for PH assessment.
• To discuss the role of HVPG and emerging biomarkers in PH management.

Main Methods:

• Validation of standardized PVP measurement techniques.
• Review of current methods including electronic transducers and water column methods.
• Exploration of novel techniques like endoscopic ultrasound and non-invasive elastography.

Main Results:

• Different techniques are used globally for PVP measurement (e.g., electronic transducers in the West, water column in Japan).
• Simpler reference points for PVP measurement, like the anterior axillary point, were identified.
• Non-invasive methods (elastography, biomarkers) and Baveno VII criteria show promise in correlating with HVPG and risk stratification.

Conclusions:

• Non-invasive tests are essential for advancing portal hypertension management.
• Continued development of these tests will lead to safer and more convenient patient care.
• HVPG remains the gold standard, but non-invasive alternatives are critical for monitoring and treatment efficacy.