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Table 1 The Postoperative Morbidity Survey (POMS) showing morbidity types, definitions and source data

From: Measuring outcomes after major abdominal surgery during hospitalization: reliability and validity of the Postoperative Morbidity Survey

Morbidity type Criteria Source data
Pulmonary De novo requirement for supplemental oxygen or other respiratory support (e.g., CPAP or IPPV) Patient observation
Treatment chart
Observation chart
Infectious Currently on antibiotics or temperature >38°C in the last 24 hrs Treatment chart
Observation chart
Renal Presence of oliguria (<500 mL/day), increased serum creatinine (>30% from baseline value), or urinary catheter in place for a non-surgical reasons Patient observation
Fluid balance chart
Biochemistry results
Gastrointestinal Unable to tolerate an enteral diet (either by mouth or feeding tube) for any reason, including nausea, vomiting and abdominal distension Patient questioning
Fluid balance chart
Cardiovascular Diagnostic test or therapy in last 24 hrs for any of the following reasons: de novo myocardial infarction or ischemia, hypotension (requiring drug therapy or fluid >200 mL/hr), atrial or ventricular arrhythmia or pulmonary edema Treatment chart
Fluid chart
Observation chart
Note review
Neurological Presence of a de novo focal deficit, coma or confusion/delirium Patient questioning
Note review
Wound complications Wound dehiscence requiring surgical exploration or drainage or pus from the wound Note review
Pathology results
Hematological Requirement for any of the following within last 24 hrs: blood, platelets, fresh frozen plasma or cryoprecipitate Fluid balance chart
Pain Surgical wound pain significant enough to require parenteral opiates or regional anesthesia Treatment chart
   Patient questioning