Bennett-Guerrero et al reported the Postoperative Morbidity Survey (PMS) for evaluating patients following surgery. These be used to monitor a patient for complications after surgery. The authors are from Mount Sinai Medical Center, Duke University and University College London.

Patient selection: routine elective surgery of moderate risk


Organ System



de novo respiratory support (supplemental oxygen, CPAP, mechanical ventilation)


antibiotic therapy or temperature > 38°C in the last 24 hours


oliguria (< 500 mL per day); serum creatinine > 1.3 times preoperative concentration; urinary catheter in place for nonsurgical reason

gastrointestinal tract

unable to tolerate an enteral diet for any reason


diagnostic testing or therapy within the past 24 hours for: de novo myocardial infarction or ischemia, hypotension, atrial or ventricular arrhythmia, or cardiogenic pulmonary edema


de novo focal deficit, coma, confusion or delirium

wound complication

wound dehiscence requiring surgical exploration; drainage of pus from the operative wound


required transfusion of blood products (red blood cells, platelets, fresh-frozen plasma, cryoprecipitate) within the last 24 hours


severe wound pain requiring parenteral opioids or regional anesethesia


number of postoperative morbidities =

= SUM(number of organ systems affected)



minimum number: 0

maximum number: 9

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