title: The Effect of Routine Maintenance Intravenous Therapy on Hemoglobin Concentration and Hematocrit during Anesthesia in Adults.
abstract: OBJECTIVE
  To investigate the decrease in hemoglobin concentration and hematocrit during elective surgery.
  
  
  METHODS
  This was a prospective study being performed in Nemazee Hospital of Shiraz University of Medical Sciences. We included a total of 50 American Society of Anesthesiology (ASA) I and II patients undergoing elective minor surgeries. Perioperative fluid administration was performed for all the patients and hemoglobin and hematocrit levels were measured three times: Once before the operation, once one hour after start of operation and once in the recovery room. Values were compared using paired sample t-test.
  
  
  RESULTS
  The mean age of the patients and controls was 39.66 ± 8.27 years. Hemoglobin level decreases significantly after one hour (p<0.001) and after the end of operation (p<0.001). In the same way hematocrit level was decreased significantly after one hour (p<0.001) and after the end of operation (p<0.001).
  
  
  CONCLUSIONS
  In this patient population undergoing elective minor operations, there was significant decrease in the hemoglobin and hematocrit levels in response to the IV fluids administration.
authors.affiliation: Department of Anesthesiology, Shiraz University of Medical Sciences, Shiraz, Iran.
authors.forename: Seyed Masoud
authors.initials: SM
authors.lastname: Lahsaee
authors.affiliation: Department of Anesthesiology, Shiraz University of Medical Sciences, Shiraz, Iran.
authors.forename: Sina
authors.initials: S
authors.lastname: Ghaffaripour
authors.affiliation: Department of Anesthesiology, Shiraz University of Medical Sciences, Shiraz, Iran.
authors.forename: Hossein
authors.initials: H
authors.lastname: Hejr
keywords: Hematocrit; Hemodilution; Hemoglobin; Perioperative fluid administration.