Study Design In this prospective cohort study, eligible patients were non-randomly assigned into two groups (group T: terlipressin and group S: somatostatin). A decision to use vasoactive drugs depended on the favorite of participating attending physicians who were requested to fill out the enclosed questionnaires immediately after the administration of the first dose for further understanding the underlying reason of the chosen medication. Convenient administration, safety profile, random selection and others were the four selections given. The result of selected choice was documented.