Retrospective Tube Feeding Tolerance in Adults With Intolerance After Switch to a Peptide-Based Formula

Inclusion Criteria: * \> 18 years of age on admission to facility * Prescribed enteral nutrition with the goal to provide at least 90% of estimated daily calorie and protein requirements for ≥ 2 weeks prior to switch * Received enteral nutrition with an intact protein formula for a minimum of three days prior to a switch to a peptide-based formula * Have documentation of intolerance to an intact protein formula, followed by a switch in formula received to a peptide-based formula * Receiving a peptide-based formula formula for ≥ 2 weeks * Have documentation of an assessment of feeding tolerance following the switch * Formulas received must be indicated for use in adults. Exclusion Criteria: * Abdominal surgery (within past 30 days prior to switch) * Having any infection, including upper respiratory, viral, gastroenteritis,wound infections, c difficile, at time of switch * Having documented cow's milk protein allergy at time of switch * Medical records lacking information on rationale for switch to a peptide-based formula and/or response to change (positive, neutral or negative).