Inclusion Criteria:  Adult patients (>18 years) who survived at the time of ICU discharge  Exclusion Criteria:  ICU stay <96 hours At the time of ICU discharge GCS <15 Presence of open abdomen (post surgery) Presence of feeding tube at the time of ICU discharge Presence of abdominal drain or PEG tube at the time of ICU discharge Presence of tracheostomy tube at the time of ICU discharge Patient who do not provide written consent Pregnancy