title: Physiologic variables and fluid resuscitation in the postoperative intensive care unit patient.
abstract: OBJECTIVE
  To examine how critical surgical illness and its management alter some of the biochemical, physiologic, and hematologic parameters commonly used to monitor postoperative, critically ill patients.
  
  
  METHODS
  Prospective survey of 150 patients over 3 months.
  
  
  METHODS
  University hospital surgical intensive care unit.
  
  
  METHODS
  A total of 150 consecutive adult patients admitted to the surgery-anesthesiology intensive care unit.
  
  
  METHODS
  The effects of surgery on serum albumin and total protein concentrations, and lymphocyte counts were investigated. This investigation was done by comparing the values before surgery with those values after surgery and by also comparing what happened after different types of surgery.
  
  
  METHODS
  None.
  
  
  RESULTS
  After surgery, decreases in serum albumin concentrations were significantly related to the estimated blood loss and acute gain in body weight from intravenous fluid resuscitation. The decreases in serum albumin and total protein concentrations were greater after elective abdominal surgery than after elective thoracic surgery. Total lymphocyte counts were significantly (< 1000 cells/mm3) reduced only in patients undergoing abdominal surgery.
  
  
  CONCLUSIONS
  Serum albumin and total protein concentrations and total lymphocyte counts were significantly reduced by surgical injury, with significantly greater decreases seen after abdominal than thoracic surgery. These decreases were caused, in large part, by the volume of intravenous fluid used in resuscitation and blood loss. The changes in these variables are thus dependent on the type of surgical stress and the perioperative fluid therapy.
authors: Department of Anesthesiology, College of Physicians and Surgeons of Columbia University, New York, NY 10032.
authors: X
authors: X
authors: Sun
authors: M
authors: M
authors: Iles
authors: C
authors: C
authors: Weissman
mesh_terms: D000005:Abdomen / Q000601:surgery; D000328:Adult; D000368:Aged; D001798:Blood Proteins / Q000032:analysis*; D003422:Critical Care; D005260:Female; D005440:Fluid Therapy; D006801:Humans; D007958:Leukocyte Count; D008297:Male; D008875:Middle Aged; D011184:Postoperative Period; D011446:Prospective Studies; D012709:Serum Albumin / Q000032:analysis*; D013903:Thoracic Surgery; D014882:Water-Electrolyte Balance; D015430:Weight Gain / Q000502:physiology
chemical_list: D001798:Blood Proteins; D012709:Serum Albumin