الفهرس 
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Abstract
Optimum perioperative fluid therapy is important to improve the outcome of the surgical patients, so assessment of a patient’s volume status accurately is an important goal for the anesthesiologist to achieve hemodynamic stability and adequate tissue oxygenation. Objective : This study compared intraoperative goal directed fluid therapy (GDFT) versus conventional fluid therapy (CVFT) using noninvasive electrical cardiometry with measuring serum lactate, serum creatinine levels, stroke volume optimization and postoperative complication. Methods : One hundred patients ASA I -II, either gender, aged 21-65 years scheduled for elective colorectal surgery were randomized into 2 groups (50 subjects each). GDFT group using Stroke volume optimization, and CVFT used conventional method of fluid administration. Hemodynamic variables, amount of fluid given, serum lactate, serum creatinine, and postoperative complication were noted. Results. serum lactate levels were insignificant intra& postoperative except at 6 hrs. postoperative was higher in GDFT 1,79±0.21 than CVFT 1.68±0.23with p value=0.02 but still within normal limits. CVFT received significantly more crystalloids 2750(1500-4000) than GDFT 2250 (1000-3350) with p value=0.002, whereas GDFT received more colloids 350(200-1000) than CVFT 250(0-1000) with p value=0.024. Total fluid received were higher in CVFT 3550(2000-5600) than GDFT 2750(1500-5000) with p value=0.005. Conclusions : GDFT results in decrease total volume of crystalloids and fluid given to patients. However, both groups didn’t alter organ perfusion inspite of serum lactate was higher in GDFT and with no differences in postoperative complications in both groups.