Characteristics of portosystemic pressure gradient Portosystemic pressure gradient n = 48% < 20 mmHg 9 18.7 20 - 29 mmHg 28 58.3 ≥ 30 mmHg 11 22.9 Average (mmHg) 25.1 ± 6.3 (16 - 41) Comment: Most of the patients undergone TIPS procedure hadthe portosystemic pressure gradientrangedfrom 20 to 29 mmHg, accounting for 58.3%.