A total of 4 visits will be performed.~At the screening visit,subject's written informed consent, assessing the inclusion/exclusion criteria and assigning enrollment numbers to eligible subjects, demographic information taking, medical history/medication history taking, vital signs measuring, physical examination, height and body weight measuring, instructing how to install/use the investigational device, and administering quality of life questionnaires.~During the treatment period, a total of 3 visits will be performed. To evaluate feasibility and efficacy, the following procedures will be carried out: vital signs measuring, physical examination, nutrition assessment/consultation, evaluation of feasibility for 'subjects', evaluation of feasibility for 'investigators', and adverse events (AEs)/concomitant medications checking and collecting.~During the treatment period, telephone monitoring is conducted depending on the compliance of subjects.
The objective of this pilot study is to evaluate the feasibility and efficacy of Rhexium Onco Nutrition, HDT-202 for post-operative care in patients who have undergone gastrectomy.