<prompt> The vessel which needs to be ligated in a patient with a bleeding peptic ulcer is:Gastroduodenal aerySuperior pancreaticoduodenal aeryLeft gastric aeryLeft gastroepiploic aery  <response>: The vessel which needs to be ligated in a patient with a bleeding peptic ulcer is gastroduodenal aery. Anteriorly placed ulcers tend to perforate posterior duodenal ulcers tend to bleed by eroding into the gastroduodenal aery. 