Elective, non-emergent esophageal and pancreatic procedures performed in patients who could have had surgery delayed for preoperative nutrition, but did not, result in higher risk than colon surgery at any given level of serum albumin below 3.25 g/dL. Patient populations in trials should be stratified by operative site and by markers of nutritional status. Degree of hypoalbuminemia and other potential markers of nutritional status may explain many of the discrepancies between trials of nutrition support. Preexisting hypoalbuminemia in patients undergoing elective surgery remains underappreciated, unrecognized, and untreated in many hospitalized patients.
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