<prompt> Normal poal vein pressure is:3 mm Hg3-5 mm Hg5-10 mm Hg10-12 mm Hg  <response>: Poal Pressure Normal Poal vein pressure: 5-10 mm Hg Variceal formation occurs when poal pressure is 10 mm Hg Variceal bleeding occurs when poal pressure is 12 mm Hg. 